./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/stack-1.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_64b20a2a-6540-4ad2-b073-2ac4065169b3/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b20a2a-6540-4ad2-b073-2ac4065169b3/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_64b20a2a-6540-4ad2-b073-2ac4065169b3/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b20a2a-6540-4ad2-b073-2ac4065169b3/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b20a2a-6540-4ad2-b073-2ac4065169b3/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_64b20a2a-6540-4ad2-b073-2ac4065169b3/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 a5e93db72222dd521789305cbf7823ac91f269c62c97020d54f95f5ba14d3fd2
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-9bd2c7f
[2023-11-19 07:57:30,317 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2023-11-19 07:57:30,436 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b20a2a-6540-4ad2-b073-2ac4065169b3/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf
[2023-11-19 07:57:30,441 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2023-11-19 07:57:30,441 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-19 07:57:30,490 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-19 07:57:30,490 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-19 07:57:30,495 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-19 07:57:30,496 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-19 07:57:30,503 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-19 07:57:30,504 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-19 07:57:30,504 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2023-11-19 07:57:30,505 INFO L153 SettingsManager]: * Use SBE=true
[2023-11-19 07:57:30,507 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-19 07:57:30,507 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2023-11-19 07:57:30,508 INFO L153 SettingsManager]: * sizeof long=4
[2023-11-19 07:57:30,509 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2023-11-19 07:57:30,509 INFO L153 SettingsManager]: * sizeof POINTER=4
[2023-11-19 07:57:30,510 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2023-11-19 07:57:30,510 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2023-11-19 07:57:30,511 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-19 07:57:30,511 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2023-11-19 07:57:30,514 INFO L153 SettingsManager]: * sizeof long double=12
[2023-11-19 07:57:30,514 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2023-11-19 07:57:30,514 INFO L153 SettingsManager]: * Use constant arrays=true
[2023-11-19 07:57:30,515 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-19 07:57:30,516 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2023-11-19 07:57:30,516 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2023-11-19 07:57:30,517 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 07:57:30,517 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-19 07:57:30,519 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2023-11-19 07:57:30,519 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-19 07:57:30,519 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2023-11-19 07:57:30,519 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-19 07:57:30,520 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-19 07:57:30,520 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-19 07:57:30,520 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2023-11-19 07:57:30,521 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-19 07:57:30,521 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-19 07:57:30,521 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_64b20a2a-6540-4ad2-b073-2ac4065169b3/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b20a2a-6540-4ad2-b073-2ac4065169b3/bin/uautomizer-verify-uCwYo4JHxu
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5e93db72222dd521789305cbf7823ac91f269c62c97020d54f95f5ba14d3fd2
[2023-11-19 07:57:30,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-19 07:57:30,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-19 07:57:30,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-19 07:57:30,825 INFO L270 PluginConnector]: Initializing CDTParser...
[2023-11-19 07:57:30,825 INFO L274 PluginConnector]: CDTParser initialized
[2023-11-19 07:57:30,827 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b20a2a-6540-4ad2-b073-2ac4065169b3/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread/stack-1.i
[2023-11-19 07:57:34,007 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2023-11-19 07:57:34,335 INFO L384 CDTParser]: Found 1 translation units.
[2023-11-19 07:57:34,336 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b20a2a-6540-4ad2-b073-2ac4065169b3/sv-benchmarks/c/pthread/stack-1.i
[2023-11-19 07:57:34,355 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b20a2a-6540-4ad2-b073-2ac4065169b3/bin/uautomizer-verify-uCwYo4JHxu/data/7e4c8e9a0/56e6feb43a9b4a2b9adc4309505a32c5/FLAG4dd6d67ce
[2023-11-19 07:57:34,376 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b20a2a-6540-4ad2-b073-2ac4065169b3/bin/uautomizer-verify-uCwYo4JHxu/data/7e4c8e9a0/56e6feb43a9b4a2b9adc4309505a32c5
[2023-11-19 07:57:34,383 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-19 07:57:34,386 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-19 07:57:34,388 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-19 07:57:34,388 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-19 07:57:34,394 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-19 07:57:34,395 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:34" (1/1) ...
[2023-11-19 07:57:34,399 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f1c2e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:34, skipping insertion in model container
[2023-11-19 07:57:34,400 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:34" (1/1) ...
[2023-11-19 07:57:34,475 INFO L177 MainTranslator]: Built tables and reachable declarations
[2023-11-19 07:57:35,048 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_64b20a2a-6540-4ad2-b073-2ac4065169b3/sv-benchmarks/c/pthread/stack-1.i[41520,41533]
[2023-11-19 07:57:35,092 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 07:57:35,108 INFO L202 MainTranslator]: Completed pre-run
[2023-11-19 07:57:35,153 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_64b20a2a-6540-4ad2-b073-2ac4065169b3/sv-benchmarks/c/pthread/stack-1.i[41520,41533]
[2023-11-19 07:57:35,164 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 07:57:35,239 INFO L206 MainTranslator]: Completed translation
[2023-11-19 07:57:35,240 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:35 WrapperNode
[2023-11-19 07:57:35,240 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-19 07:57:35,241 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-19 07:57:35,241 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-19 07:57:35,242 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-19 07:57:35,250 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:35" (1/1) ...
[2023-11-19 07:57:35,269 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:35" (1/1) ...
[2023-11-19 07:57:35,301 INFO L138 Inliner]: procedures = 277, calls = 43, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 152
[2023-11-19 07:57:35,301 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-19 07:57:35,302 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-19 07:57:35,302 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-19 07:57:35,303 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2023-11-19 07:57:35,313 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:35" (1/1) ...
[2023-11-19 07:57:35,313 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:35" (1/1) ...
[2023-11-19 07:57:35,318 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:35" (1/1) ...
[2023-11-19 07:57:35,318 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:35" (1/1) ...
[2023-11-19 07:57:35,326 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:35" (1/1) ...
[2023-11-19 07:57:35,330 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:35" (1/1) ...
[2023-11-19 07:57:35,332 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:35" (1/1) ...
[2023-11-19 07:57:35,334 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:35" (1/1) ...
[2023-11-19 07:57:35,338 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-19 07:57:35,339 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-19 07:57:35,340 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2023-11-19 07:57:35,340 INFO L274 PluginConnector]: RCFGBuilder initialized
[2023-11-19 07:57:35,341 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:35" (1/1) ...
[2023-11-19 07:57:35,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 07:57:35,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b20a2a-6540-4ad2-b073-2ac4065169b3/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:57:35,390 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b20a2a-6540-4ad2-b073-2ac4065169b3/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-19 07:57:35,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b20a2a-6540-4ad2-b073-2ac4065169b3/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-19 07:57:35,435 INFO L130 BoogieDeclarations]: Found specification of procedure t1
[2023-11-19 07:57:35,436 INFO L138 BoogieDeclarations]: Found implementation of procedure t1
[2023-11-19 07:57:35,436 INFO L130 BoogieDeclarations]: Found specification of procedure t2
[2023-11-19 07:57:35,437 INFO L138 BoogieDeclarations]: Found implementation of procedure t2
[2023-11-19 07:57:35,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-11-19 07:57:35,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-11-19 07:57:35,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2023-11-19 07:57:35,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2023-11-19 07:57:35,438 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock
[2023-11-19 07:57:35,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-19 07:57:35,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-19 07:57:35,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-19 07:57:35,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-19 07:57:35,442 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement
[2023-11-19 07:57:35,683 INFO L236 CfgBuilder]: Building ICFG
[2023-11-19 07:57:35,687 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-19 07:57:35,969 INFO L277 CfgBuilder]: Performing block encoding
[2023-11-19 07:57:35,980 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-19 07:57:35,981 INFO L302 CfgBuilder]: Removed 2 assume(true) statements.
[2023-11-19 07:57:35,985 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:35 BoogieIcfgContainer
[2023-11-19 07:57:35,986 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-19 07:57:35,989 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-19 07:57:35,989 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2023-11-19 07:57:35,992 INFO L274 PluginConnector]: TraceAbstraction initialized
[2023-11-19 07:57:35,993 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:57:34" (1/3) ...
[2023-11-19 07:57:35,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae95dac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:57:35, skipping insertion in model container
[2023-11-19 07:57:35,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:35" (2/3) ...
[2023-11-19 07:57:35,996 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae95dac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:57:35, skipping insertion in model container
[2023-11-19 07:57:35,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:35" (3/3) ...
[2023-11-19 07:57:35,999 INFO L112 eAbstractionObserver]: Analyzing ICFG stack-1.i
[2023-11-19 07:57:36,009 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2023-11-19 07:57:36,022 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-19 07:57:36,022 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations.
[2023-11-19 07:57:36,023 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2023-11-19 07:57:36,183 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions.
[2023-11-19 07:57:36,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 163 transitions, 340 flow
[2023-11-19 07:57:36,330 INFO L124 PetriNetUnfolderBase]: 10/161 cut-off events.
[2023-11-19 07:57:36,330 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2023-11-19 07:57:36,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 161 events. 10/161 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 386 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 119. Up to 3 conditions per place.
[2023-11-19 07:57:36,337 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 163 transitions, 340 flow
[2023-11-19 07:57:36,344 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 151 transitions, 311 flow
[2023-11-19 07:57:36,348 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation.
[2023-11-19 07:57:36,358 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 148 places, 151 transitions, 311 flow
[2023-11-19 07:57:36,361 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 148 places, 151 transitions, 311 flow
[2023-11-19 07:57:36,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 151 transitions, 311 flow
[2023-11-19 07:57:36,413 INFO L124 PetriNetUnfolderBase]: 10/151 cut-off events.
[2023-11-19 07:57:36,414 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES.
[2023-11-19 07:57:36,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 151 events. 10/151 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 313 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 119. Up to 3 conditions per place.
[2023-11-19 07:57:36,422 INFO L119 LiptonReduction]: Number of co-enabled transitions 7432
[2023-11-19 07:57:41,330 INFO L134 LiptonReduction]: Checked pairs total: 10223
[2023-11-19 07:57:41,330 INFO L136 LiptonReduction]: Total number of compositions: 146
[2023-11-19 07:57:41,347 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-19 07:57:41,354 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;@1bde0b04, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-19 07:57:41,354 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations.
[2023-11-19 07:57:41,360 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2023-11-19 07:57:41,360 INFO L124 PetriNetUnfolderBase]: 1/13 cut-off events.
[2023-11-19 07:57:41,360 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES.
[2023-11-19 07:57:41,360 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:57:41,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1]
[2023-11-19 07:57:41,362 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2023-11-19 07:57:41,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:57:41,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1999417261, now seen corresponding path program 1 times
[2023-11-19 07:57:41,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:57:41,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993275520]
[2023-11-19 07:57:41,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:57:41,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:57:41,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:57:41,745 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 07:57:41,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:57:41,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993275520]
[2023-11-19 07:57:41,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993275520] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:57:41,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:57:41,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-19 07:57:41,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815893759]
[2023-11-19 07:57:41,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:57:41,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:57:41,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:57:41,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:57:41,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:57:41,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 309
[2023-11-19 07:57:41,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 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 07:57:41,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:57:41,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 309
[2023-11-19 07:57:41,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:57:42,090 INFO L124 PetriNetUnfolderBase]: 598/991 cut-off events.
[2023-11-19 07:57:42,091 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES.
[2023-11-19 07:57:42,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2025 conditions, 991 events. 598/991 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3603 event pairs, 257 based on Foata normal form. 22/813 useless extension candidates. Maximal degree in co-relation 1854. Up to 634 conditions per place.
[2023-11-19 07:57:42,106 INFO L140 encePairwiseOnDemand]: 304/309 looper letters, 48 selfloop transitions, 3 changer transitions 0/52 dead transitions.
[2023-11-19 07:57:42,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 52 transitions, 221 flow
[2023-11-19 07:57:42,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:57:42,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:57:42,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 488 transitions.
[2023-11-19 07:57:42,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5264293419633226
[2023-11-19 07:57:42,135 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 488 transitions.
[2023-11-19 07:57:42,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 488 transitions.
[2023-11-19 07:57:42,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:57:42,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 488 transitions.
[2023-11-19 07:57:42,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 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 07:57:42,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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 07:57:42,159 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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 07:57:42,161 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 73 flow. Second operand 3 states and 488 transitions.
[2023-11-19 07:57:42,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 52 transitions, 221 flow
[2023-11-19 07:57:42,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 52 transitions, 213 flow, removed 0 selfloop flow, removed 3 redundant places.
[2023-11-19 07:57:42,167 INFO L231 Difference]: Finished difference. Result has 34 places, 33 transitions, 85 flow
[2023-11-19 07:57:42,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=34, PETRI_TRANSITIONS=33}
[2023-11-19 07:57:42,173 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places.
[2023-11-19 07:57:42,174 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 33 transitions, 85 flow
[2023-11-19 07:57:42,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 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 07:57:42,174 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:57:42,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:57:42,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-19 07:57:42,175 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2023-11-19 07:57:42,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:57:42,176 INFO L85 PathProgramCache]: Analyzing trace with hash 270291622, now seen corresponding path program 1 times
[2023-11-19 07:57:42,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:57:42,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210427412]
[2023-11-19 07:57:42,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:57:42,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:57:42,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:57:42,318 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 07:57:42,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:57:42,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210427412]
[2023-11-19 07:57:42,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210427412] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:57:42,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:57:42,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-11-19 07:57:42,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297164451]
[2023-11-19 07:57:42,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:57:42,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:57:42,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:57:42,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:57:42,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:57:42,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 309
[2023-11-19 07:57:42,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 33 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:57:42,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:57:42,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 309
[2023-11-19 07:57:42,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:57:42,570 INFO L124 PetriNetUnfolderBase]: 652/1081 cut-off events.
[2023-11-19 07:57:42,570 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES.
[2023-11-19 07:57:42,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2308 conditions, 1081 events. 652/1081 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 4581 event pairs, 304 based on Foata normal form. 0/917 useless extension candidates. Maximal degree in co-relation 2064. Up to 974 conditions per place.
[2023-11-19 07:57:42,579 INFO L140 encePairwiseOnDemand]: 306/309 looper letters, 46 selfloop transitions, 3 changer transitions 0/50 dead transitions.
[2023-11-19 07:57:42,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 50 transitions, 224 flow
[2023-11-19 07:57:42,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:57:42,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:57:42,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 493 transitions.
[2023-11-19 07:57:42,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5318230852211435
[2023-11-19 07:57:42,585 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 493 transitions.
[2023-11-19 07:57:42,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 493 transitions.
[2023-11-19 07:57:42,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:57:42,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 493 transitions.
[2023-11-19 07:57:42,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 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 07:57:42,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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 07:57:42,593 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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 07:57:42,594 INFO L175 Difference]: Start difference. First operand has 34 places, 33 transitions, 85 flow. Second operand 3 states and 493 transitions.
[2023-11-19 07:57:42,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 50 transitions, 224 flow
[2023-11-19 07:57:42,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 50 transitions, 220 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-11-19 07:57:42,600 INFO L231 Difference]: Finished difference. Result has 36 places, 34 transitions, 97 flow
[2023-11-19 07:57:42,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=36, PETRI_TRANSITIONS=34}
[2023-11-19 07:57:42,602 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places.
[2023-11-19 07:57:42,602 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 34 transitions, 97 flow
[2023-11-19 07:57:42,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:57:42,604 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:57:42,604 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:57:42,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-19 07:57:42,613 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2023-11-19 07:57:42,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:57:42,617 INFO L85 PathProgramCache]: Analyzing trace with hash -804777524, now seen corresponding path program 1 times
[2023-11-19 07:57:42,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:57:42,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532508431]
[2023-11-19 07:57:42,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:57:42,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:57:42,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:57:42,762 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:57:42,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:57:42,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532508431]
[2023-11-19 07:57:42,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532508431] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 07:57:42,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637568624]
[2023-11-19 07:57:42,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:57:42,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:57:42,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b20a2a-6540-4ad2-b073-2ac4065169b3/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:57:42,766 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b20a2a-6540-4ad2-b073-2ac4065169b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:57:42,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b20a2a-6540-4ad2-b073-2ac4065169b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-19 07:57:42,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:57:42,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-11-19 07:57:42,899 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:57:42,962 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:57:42,963 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 07:57:43,007 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:57:43,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637568624] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-19 07:57:43,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-11-19 07:57:43,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9
[2023-11-19 07:57:43,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767092866]
[2023-11-19 07:57:43,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-11-19 07:57:43,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2023-11-19 07:57:43,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:57:43,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2023-11-19 07:57:43,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90
[2023-11-19 07:57:43,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 309
[2023-11-19 07:57:43,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 97 flow. Second operand has 10 states, 10 states have (on average 143.4) internal successors, (1434), 10 states have internal predecessors, (1434), 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 07:57:43,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:57:43,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 309
[2023-11-19 07:57:43,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:57:43,775 INFO L124 PetriNetUnfolderBase]: 1619/2654 cut-off events.
[2023-11-19 07:57:43,776 INFO L125 PetriNetUnfolderBase]: For 840/840 co-relation queries the response was YES.
[2023-11-19 07:57:43,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6125 conditions, 2654 events. 1619/2654 cut-off events. For 840/840 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 12087 event pairs, 246 based on Foata normal form. 82/2392 useless extension candidates. Maximal degree in co-relation 5686. Up to 795 conditions per place.
[2023-11-19 07:57:43,799 INFO L140 encePairwiseOnDemand]: 301/309 looper letters, 155 selfloop transitions, 26 changer transitions 3/184 dead transitions.
[2023-11-19 07:57:43,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 184 transitions, 855 flow
[2023-11-19 07:57:43,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2023-11-19 07:57:43,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states.
[2023-11-19 07:57:43,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1867 transitions.
[2023-11-19 07:57:43,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035059331175836
[2023-11-19 07:57:43,807 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1867 transitions.
[2023-11-19 07:57:43,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1867 transitions.
[2023-11-19 07:57:43,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:57:43,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1867 transitions.
[2023-11-19 07:57:43,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 155.58333333333334) internal successors, (1867), 12 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:57:43,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 309.0) internal successors, (4017), 13 states have internal predecessors, (4017), 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 07:57:43,828 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 309.0) internal successors, (4017), 13 states have internal predecessors, (4017), 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 07:57:43,828 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 97 flow. Second operand 12 states and 1867 transitions.
[2023-11-19 07:57:43,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 184 transitions, 855 flow
[2023-11-19 07:57:43,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 184 transitions, 840 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-11-19 07:57:43,838 INFO L231 Difference]: Finished difference. Result has 54 places, 59 transitions, 309 flow
[2023-11-19 07:57:43,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=309, PETRI_PLACES=54, PETRI_TRANSITIONS=59}
[2023-11-19 07:57:43,839 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 20 predicate places.
[2023-11-19 07:57:43,839 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 59 transitions, 309 flow
[2023-11-19 07:57:43,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 143.4) internal successors, (1434), 10 states have internal predecessors, (1434), 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 07:57:43,841 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:57:43,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:57:43,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b20a2a-6540-4ad2-b073-2ac4065169b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-11-19 07:57:44,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b20a2a-6540-4ad2-b073-2ac4065169b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:57:44,061 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2023-11-19 07:57:44,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:57:44,062 INFO L85 PathProgramCache]: Analyzing trace with hash -34368970, now seen corresponding path program 1 times
[2023-11-19 07:57:44,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:57:44,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112533794]
[2023-11-19 07:57:44,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:57:44,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:57:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:57:44,287 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 07:57:44,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:57:44,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112533794]
[2023-11-19 07:57:44,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112533794] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:57:44,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:57:44,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-19 07:57:44,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393651702]
[2023-11-19 07:57:44,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:57:44,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:57:44,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:57:44,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:57:44,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:57:44,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 309
[2023-11-19 07:57:44,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 59 transitions, 309 flow. Second operand has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:57:44,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:57:44,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 309
[2023-11-19 07:57:44,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:57:44,499 INFO L124 PetriNetUnfolderBase]: 552/1017 cut-off events.
[2023-11-19 07:57:44,499 INFO L125 PetriNetUnfolderBase]: For 460/460 co-relation queries the response was YES.
[2023-11-19 07:57:44,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2596 conditions, 1017 events. 552/1017 cut-off events. For 460/460 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4181 event pairs, 98 based on Foata normal form. 0/929 useless extension candidates. Maximal degree in co-relation 2484. Up to 746 conditions per place.
[2023-11-19 07:57:44,509 INFO L140 encePairwiseOnDemand]: 304/309 looper letters, 47 selfloop transitions, 6 changer transitions 0/57 dead transitions.
[2023-11-19 07:57:44,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 57 transitions, 352 flow
[2023-11-19 07:57:44,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:57:44,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:57:44,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 480 transitions.
[2023-11-19 07:57:44,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.517799352750809
[2023-11-19 07:57:44,512 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 480 transitions.
[2023-11-19 07:57:44,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 480 transitions.
[2023-11-19 07:57:44,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:57:44,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 480 transitions.
[2023-11-19 07:57:44,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 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 07:57:44,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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 07:57:44,519 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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 07:57:44,520 INFO L175 Difference]: Start difference. First operand has 54 places, 59 transitions, 309 flow. Second operand 3 states and 480 transitions.
[2023-11-19 07:57:44,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 57 transitions, 352 flow
[2023-11-19 07:57:44,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 57 transitions, 331 flow, removed 6 selfloop flow, removed 5 redundant places.
[2023-11-19 07:57:44,530 INFO L231 Difference]: Finished difference. Result has 48 places, 48 transitions, 216 flow
[2023-11-19 07:57:44,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=48, PETRI_TRANSITIONS=48}
[2023-11-19 07:57:44,532 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places.
[2023-11-19 07:57:44,532 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 48 transitions, 216 flow
[2023-11-19 07:57:44,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:57:44,533 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:57:44,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:57:44,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-11-19 07:57:44,538 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2023-11-19 07:57:44,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:57:44,540 INFO L85 PathProgramCache]: Analyzing trace with hash 282316310, now seen corresponding path program 1 times
[2023-11-19 07:57:44,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:57:44,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086658539]
[2023-11-19 07:57:44,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:57:44,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:57:44,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:57:44,606 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 07:57:44,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:57:44,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086658539]
[2023-11-19 07:57:44,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086658539] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:57:44,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:57:44,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-11-19 07:57:44,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27238768]
[2023-11-19 07:57:44,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:57:44,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:57:44,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:57:44,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:57:44,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:57:44,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 309
[2023-11-19 07:57:44,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 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 07:57:44,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:57:44,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 309
[2023-11-19 07:57:44,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:57:44,859 INFO L124 PetriNetUnfolderBase]: 624/1145 cut-off events.
[2023-11-19 07:57:44,860 INFO L125 PetriNetUnfolderBase]: For 349/349 co-relation queries the response was YES.
[2023-11-19 07:57:44,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2962 conditions, 1145 events. 624/1145 cut-off events. For 349/349 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 4688 event pairs, 391 based on Foata normal form. 24/1169 useless extension candidates. Maximal degree in co-relation 2382. Up to 849 conditions per place.
[2023-11-19 07:57:44,870 INFO L140 encePairwiseOnDemand]: 303/309 looper letters, 56 selfloop transitions, 6 changer transitions 0/62 dead transitions.
[2023-11-19 07:57:44,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 62 transitions, 383 flow
[2023-11-19 07:57:44,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:57:44,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:57:44,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 486 transitions.
[2023-11-19 07:57:44,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5242718446601942
[2023-11-19 07:57:44,873 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 486 transitions.
[2023-11-19 07:57:44,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 486 transitions.
[2023-11-19 07:57:44,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:57:44,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 486 transitions.
[2023-11-19 07:57:44,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 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 07:57:44,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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 07:57:44,879 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 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 07:57:44,880 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 216 flow. Second operand 3 states and 486 transitions.
[2023-11-19 07:57:44,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 62 transitions, 383 flow
[2023-11-19 07:57:44,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 62 transitions, 375 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-11-19 07:57:44,887 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 248 flow
[2023-11-19 07:57:44,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=51, PETRI_TRANSITIONS=48}
[2023-11-19 07:57:44,890 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 17 predicate places.
[2023-11-19 07:57:44,890 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 248 flow
[2023-11-19 07:57:44,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 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 07:57:44,891 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:57:44,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:57:44,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-11-19 07:57:44,892 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2023-11-19 07:57:44,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:57:44,892 INFO L85 PathProgramCache]: Analyzing trace with hash -2048689788, now seen corresponding path program 1 times
[2023-11-19 07:57:44,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:57:44,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531727890]
[2023-11-19 07:57:44,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:57:44,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:57:44,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:57:46,221 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 07:57:46,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:57:46,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531727890]
[2023-11-19 07:57:46,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531727890] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:57:46,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:57:46,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14
[2023-11-19 07:57:46,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326164855]
[2023-11-19 07:57:46,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:57:46,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2023-11-19 07:57:46,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:57:46,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2023-11-19 07:57:46,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240
[2023-11-19 07:57:48,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 309
[2023-11-19 07:57:48,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 248 flow. Second operand has 16 states, 16 states have (on average 109.3125) internal successors, (1749), 16 states have internal predecessors, (1749), 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 07:57:48,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:57:48,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 309
[2023-11-19 07:57:48,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:57:49,192 INFO L124 PetriNetUnfolderBase]: 814/1505 cut-off events.
[2023-11-19 07:57:49,193 INFO L125 PetriNetUnfolderBase]: For 998/998 co-relation queries the response was YES.
[2023-11-19 07:57:49,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3888 conditions, 1505 events. 814/1505 cut-off events. For 998/998 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6786 event pairs, 242 based on Foata normal form. 16/1507 useless extension candidates. Maximal degree in co-relation 2349. Up to 998 conditions per place.
[2023-11-19 07:57:49,205 INFO L140 encePairwiseOnDemand]: 292/309 looper letters, 97 selfloop transitions, 18 changer transitions 26/141 dead transitions.
[2023-11-19 07:57:49,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 141 transitions, 791 flow
[2023-11-19 07:57:49,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2023-11-19 07:57:49,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states.
[2023-11-19 07:57:49,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1639 transitions.
[2023-11-19 07:57:49,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3788719371243643
[2023-11-19 07:57:49,213 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1639 transitions.
[2023-11-19 07:57:49,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1639 transitions.
[2023-11-19 07:57:49,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:57:49,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1639 transitions.
[2023-11-19 07:57:49,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 117.07142857142857) internal successors, (1639), 14 states have internal predecessors, (1639), 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 07:57:49,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 309.0) internal successors, (4635), 15 states have internal predecessors, (4635), 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 07:57:49,231 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 309.0) internal successors, (4635), 15 states have internal predecessors, (4635), 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 07:57:49,231 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 248 flow. Second operand 14 states and 1639 transitions.
[2023-11-19 07:57:49,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 141 transitions, 791 flow
[2023-11-19 07:57:49,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 141 transitions, 765 flow, removed 5 selfloop flow, removed 2 redundant places.
[2023-11-19 07:57:49,239 INFO L231 Difference]: Finished difference. Result has 73 places, 65 transitions, 384 flow
[2023-11-19 07:57:49,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=384, PETRI_PLACES=73, PETRI_TRANSITIONS=65}
[2023-11-19 07:57:49,240 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 39 predicate places.
[2023-11-19 07:57:49,241 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 65 transitions, 384 flow
[2023-11-19 07:57:49,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 109.3125) internal successors, (1749), 16 states have internal predecessors, (1749), 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 07:57:49,242 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:57:49,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:57:49,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2023-11-19 07:57:49,243 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2023-11-19 07:57:49,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:57:49,243 INFO L85 PathProgramCache]: Analyzing trace with hash -699342, now seen corresponding path program 2 times
[2023-11-19 07:57:49,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:57:49,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381874672]
[2023-11-19 07:57:49,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:57:49,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:57:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:57:50,422 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 07:57:50,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:57:50,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381874672]
[2023-11-19 07:57:50,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381874672] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:57:50,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:57:50,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14
[2023-11-19 07:57:50,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731412833]
[2023-11-19 07:57:50,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:57:50,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2023-11-19 07:57:50,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:57:50,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2023-11-19 07:57:50,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240
[2023-11-19 07:57:52,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 309
[2023-11-19 07:57:52,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 65 transitions, 384 flow. Second operand has 16 states, 16 states have (on average 109.3125) internal successors, (1749), 16 states have internal predecessors, (1749), 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 07:57:52,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:57:52,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 309
[2023-11-19 07:57:52,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:57:53,785 INFO L124 PetriNetUnfolderBase]: 962/1789 cut-off events.
[2023-11-19 07:57:53,785 INFO L125 PetriNetUnfolderBase]: For 1556/1556 co-relation queries the response was YES.
[2023-11-19 07:57:53,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5114 conditions, 1789 events. 962/1789 cut-off events. For 1556/1556 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 8234 event pairs, 275 based on Foata normal form. 16/1791 useless extension candidates. Maximal degree in co-relation 4196. Up to 929 conditions per place.
[2023-11-19 07:57:53,803 INFO L140 encePairwiseOnDemand]: 293/309 looper letters, 97 selfloop transitions, 26 changer transitions 27/150 dead transitions.
[2023-11-19 07:57:53,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 150 transitions, 962 flow
[2023-11-19 07:57:53,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2023-11-19 07:57:53,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states.
[2023-11-19 07:57:53,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1639 transitions.
[2023-11-19 07:57:53,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3788719371243643
[2023-11-19 07:57:53,812 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1639 transitions.
[2023-11-19 07:57:53,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1639 transitions.
[2023-11-19 07:57:53,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:57:53,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1639 transitions.
[2023-11-19 07:57:53,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 117.07142857142857) internal successors, (1639), 14 states have internal predecessors, (1639), 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 07:57:53,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 309.0) internal successors, (4635), 15 states have internal predecessors, (4635), 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 07:57:53,836 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 309.0) internal successors, (4635), 15 states have internal predecessors, (4635), 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 07:57:53,836 INFO L175 Difference]: Start difference. First operand has 73 places, 65 transitions, 384 flow. Second operand 14 states and 1639 transitions.
[2023-11-19 07:57:53,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 150 transitions, 962 flow
[2023-11-19 07:57:53,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 150 transitions, 958 flow, removed 2 selfloop flow, removed 0 redundant places.
[2023-11-19 07:57:53,851 INFO L231 Difference]: Finished difference. Result has 94 places, 74 transitions, 544 flow
[2023-11-19 07:57:53,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=544, PETRI_PLACES=94, PETRI_TRANSITIONS=74}
[2023-11-19 07:57:53,852 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 60 predicate places.
[2023-11-19 07:57:53,853 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 74 transitions, 544 flow
[2023-11-19 07:57:53,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 109.3125) internal successors, (1749), 16 states have internal predecessors, (1749), 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 07:57:53,854 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:57:53,854 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1]
[2023-11-19 07:57:53,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2023-11-19 07:57:53,855 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2023-11-19 07:57:53,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:57:53,855 INFO L85 PathProgramCache]: Analyzing trace with hash 580558828, now seen corresponding path program 2 times
[2023-11-19 07:57:53,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:57:53,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625514672]
[2023-11-19 07:57:53,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:57:53,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:57:53,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:57:54,095 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:57:54,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:57:54,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625514672]
[2023-11-19 07:57:54,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625514672] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 07:57:54,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303069136]
[2023-11-19 07:57:54,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2023-11-19 07:57:54,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:57:54,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b20a2a-6540-4ad2-b073-2ac4065169b3/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:57:54,102 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b20a2a-6540-4ad2-b073-2ac4065169b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:57:54,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b20a2a-6540-4ad2-b073-2ac4065169b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-19 07:57:54,248 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2023-11-19 07:57:54,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-11-19 07:57:54,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-11-19 07:57:54,253 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:57:54,322 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:57:54,322 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 07:57:54,414 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:57:54,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303069136] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-19 07:57:54,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-11-19 07:57:54,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12
[2023-11-19 07:57:54,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974468704]
[2023-11-19 07:57:54,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-11-19 07:57:54,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2023-11-19 07:57:54,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:57:54,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2023-11-19 07:57:54,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156
[2023-11-19 07:57:54,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 309
[2023-11-19 07:57:54,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 74 transitions, 544 flow. Second operand has 13 states, 13 states have (on average 143.6153846153846) internal successors, (1867), 13 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:57:54,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:57:54,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 309
[2023-11-19 07:57:54,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:57:55,253 INFO L124 PetriNetUnfolderBase]: 1186/2201 cut-off events.
[2023-11-19 07:57:55,253 INFO L125 PetriNetUnfolderBase]: For 2961/2961 co-relation queries the response was YES.
[2023-11-19 07:57:55,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6831 conditions, 2201 events. 1186/2201 cut-off events. For 2961/2961 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 9871 event pairs, 278 based on Foata normal form. 16/2203 useless extension candidates. Maximal degree in co-relation 5518. Up to 678 conditions per place.
[2023-11-19 07:57:55,279 INFO L140 encePairwiseOnDemand]: 303/309 looper letters, 164 selfloop transitions, 25 changer transitions 6/195 dead transitions.
[2023-11-19 07:57:55,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 195 transitions, 1457 flow
[2023-11-19 07:57:55,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2023-11-19 07:57:55,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states.
[2023-11-19 07:57:55,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1989 transitions.
[2023-11-19 07:57:55,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49514563106796117
[2023-11-19 07:57:55,289 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1989 transitions.
[2023-11-19 07:57:55,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1989 transitions.
[2023-11-19 07:57:55,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:57:55,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1989 transitions.
[2023-11-19 07:57:55,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 153.0) internal successors, (1989), 13 states have internal predecessors, (1989), 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 07:57:55,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 309.0) internal successors, (4326), 14 states have internal predecessors, (4326), 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 07:57:55,308 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 309.0) internal successors, (4326), 14 states have internal predecessors, (4326), 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 07:57:55,309 INFO L175 Difference]: Start difference. First operand has 94 places, 74 transitions, 544 flow. Second operand 13 states and 1989 transitions.
[2023-11-19 07:57:55,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 195 transitions, 1457 flow
[2023-11-19 07:57:55,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 195 transitions, 1399 flow, removed 24 selfloop flow, removed 4 redundant places.
[2023-11-19 07:57:55,337 INFO L231 Difference]: Finished difference. Result has 104 places, 81 transitions, 632 flow
[2023-11-19 07:57:55,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=632, PETRI_PLACES=104, PETRI_TRANSITIONS=81}
[2023-11-19 07:57:55,340 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 70 predicate places.
[2023-11-19 07:57:55,340 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 81 transitions, 632 flow
[2023-11-19 07:57:55,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 143.6153846153846) internal successors, (1867), 13 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:57:55,342 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:57:55,342 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:57:55,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b20a2a-6540-4ad2-b073-2ac4065169b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-11-19 07:57:55,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b20a2a-6540-4ad2-b073-2ac4065169b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:57:55,555 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2023-11-19 07:57:55,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:57:55,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1098782439, now seen corresponding path program 3 times
[2023-11-19 07:57:55,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:57:55,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039335270]
[2023-11-19 07:57:55,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:57:55,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:57:55,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:57:56,692 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:57:56,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:57:56,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039335270]
[2023-11-19 07:57:56,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039335270] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 07:57:56,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918333542]
[2023-11-19 07:57:56,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2023-11-19 07:57:56,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:57:56,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b20a2a-6540-4ad2-b073-2ac4065169b3/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:57:56,694 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b20a2a-6540-4ad2-b073-2ac4065169b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:57:56,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b20a2a-6540-4ad2-b073-2ac4065169b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-19 07:57:56,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s)
[2023-11-19 07:57:56,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-11-19 07:57:56,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 47 conjunts are in the unsatisfiable core
[2023-11-19 07:57:56,830 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:57:57,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1
[2023-11-19 07:57:57,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 32
[2023-11-19 07:57:57,573 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-11-19 07:57:57,573 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-19 07:57:57,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918333542] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:57:57,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-19 07:57:57,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15] total 28
[2023-11-19 07:57:57,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682443574]
[2023-11-19 07:57:57,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:57:57,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2023-11-19 07:57:57,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:57:57,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2023-11-19 07:57:57,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=800, Unknown=0, NotChecked=0, Total=870
[2023-11-19 07:57:59,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 309
[2023-11-19 07:57:59,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 81 transitions, 632 flow. Second operand has 15 states, 15 states have (on average 119.86666666666666) internal successors, (1798), 15 states have internal predecessors, (1798), 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 07:57:59,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:57:59,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 309
[2023-11-19 07:57:59,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:58:02,125 INFO L124 PetriNetUnfolderBase]: 1829/3415 cut-off events.
[2023-11-19 07:58:02,126 INFO L125 PetriNetUnfolderBase]: For 4552/4552 co-relation queries the response was YES.
[2023-11-19 07:58:02,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10609 conditions, 3415 events. 1829/3415 cut-off events. For 4552/4552 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 17565 event pairs, 483 based on Foata normal form. 0/3391 useless extension candidates. Maximal degree in co-relation 9017. Up to 1013 conditions per place.
[2023-11-19 07:58:02,179 INFO L140 encePairwiseOnDemand]: 292/309 looper letters, 115 selfloop transitions, 92 changer transitions 1/214 dead transitions.
[2023-11-19 07:58:02,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 214 transitions, 1675 flow
[2023-11-19 07:58:02,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states.
[2023-11-19 07:58:02,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states.
[2023-11-19 07:58:02,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2852 transitions.
[2023-11-19 07:58:02,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40129449838187703
[2023-11-19 07:58:02,192 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2852 transitions.
[2023-11-19 07:58:02,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2852 transitions.
[2023-11-19 07:58:02,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:58:02,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2852 transitions.
[2023-11-19 07:58:02,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:58:02,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 309.0) internal successors, (7416), 24 states have internal predecessors, (7416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:58:02,231 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 309.0) internal successors, (7416), 24 states have internal predecessors, (7416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:58:02,240 INFO L175 Difference]: Start difference. First operand has 104 places, 81 transitions, 632 flow. Second operand 23 states and 2852 transitions.
[2023-11-19 07:58:02,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 214 transitions, 1675 flow
[2023-11-19 07:58:02,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 214 transitions, 1591 flow, removed 20 selfloop flow, removed 7 redundant places.
[2023-11-19 07:58:02,274 INFO L231 Difference]: Finished difference. Result has 126 places, 136 transitions, 1252 flow
[2023-11-19 07:58:02,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1252, PETRI_PLACES=126, PETRI_TRANSITIONS=136}
[2023-11-19 07:58:02,277 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 92 predicate places.
[2023-11-19 07:58:02,277 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 136 transitions, 1252 flow
[2023-11-19 07:58:02,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 119.86666666666666) internal successors, (1798), 15 states have internal predecessors, (1798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:58:02,279 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:58:02,279 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:58:02,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b20a2a-6540-4ad2-b073-2ac4065169b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-11-19 07:58:02,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b20a2a-6540-4ad2-b073-2ac4065169b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8
[2023-11-19 07:58:02,503 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2023-11-19 07:58:02,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:58:02,504 INFO L85 PathProgramCache]: Analyzing trace with hash -2139598439, now seen corresponding path program 4 times
[2023-11-19 07:58:02,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:58:02,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618016984]
[2023-11-19 07:58:02,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:58:02,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:58:02,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:58:03,662 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:58:03,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:58:03,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618016984]
[2023-11-19 07:58:03,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618016984] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 07:58:03,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166923414]
[2023-11-19 07:58:03,663 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2023-11-19 07:58:03,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:58:03,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b20a2a-6540-4ad2-b073-2ac4065169b3/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:58:03,667 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b20a2a-6540-4ad2-b073-2ac4065169b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:58:03,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b20a2a-6540-4ad2-b073-2ac4065169b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-19 07:58:03,806 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2023-11-19 07:58:03,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-11-19 07:58:03,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 54 conjunts are in the unsatisfiable core
[2023-11-19 07:58:03,814 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:58:03,833 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size
[2023-11-19 07:58:03,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15
[2023-11-19 07:58:04,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1
[2023-11-19 07:58:04,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 26
[2023-11-19 07:58:04,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 32
[2023-11-19 07:58:04,630 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2023-11-19 07:58:04,630 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-11-19 07:58:04,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166923414] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:58:04,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-11-19 07:58:04,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [16] total 30
[2023-11-19 07:58:04,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159782004]
[2023-11-19 07:58:04,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:58:04,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2023-11-19 07:58:04,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:58:04,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2023-11-19 07:58:04,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=915, Unknown=0, NotChecked=0, Total=992
[2023-11-19 07:58:06,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 309
[2023-11-19 07:58:06,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 136 transitions, 1252 flow. Second operand has 16 states, 16 states have (on average 115.75) internal successors, (1852), 16 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:58:06,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:58:06,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 309
[2023-11-19 07:58:06,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:58:09,437 INFO L124 PetriNetUnfolderBase]: 2015/3767 cut-off events.
[2023-11-19 07:58:09,437 INFO L125 PetriNetUnfolderBase]: For 6490/6490 co-relation queries the response was YES.
[2023-11-19 07:58:09,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12936 conditions, 3767 events. 2015/3767 cut-off events. For 6490/6490 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 19655 event pairs, 284 based on Foata normal form. 0/3740 useless extension candidates. Maximal degree in co-relation 11058. Up to 1089 conditions per place.
[2023-11-19 07:58:09,497 INFO L140 encePairwiseOnDemand]: 293/309 looper letters, 120 selfloop transitions, 111 changer transitions 3/240 dead transitions.
[2023-11-19 07:58:09,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 240 transitions, 2100 flow
[2023-11-19 07:58:09,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states.
[2023-11-19 07:58:09,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states.
[2023-11-19 07:58:09,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2765 transitions.
[2023-11-19 07:58:09,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3890530462923878
[2023-11-19 07:58:09,513 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2765 transitions.
[2023-11-19 07:58:09,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2765 transitions.
[2023-11-19 07:58:09,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:58:09,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2765 transitions.
[2023-11-19 07:58:09,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 120.21739130434783) internal successors, (2765), 23 states have internal predecessors, (2765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:58:09,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 309.0) internal successors, (7416), 24 states have internal predecessors, (7416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:58:09,540 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 309.0) internal successors, (7416), 24 states have internal predecessors, (7416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:58:09,540 INFO L175 Difference]: Start difference. First operand has 126 places, 136 transitions, 1252 flow. Second operand 23 states and 2765 transitions.
[2023-11-19 07:58:09,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 240 transitions, 2100 flow
[2023-11-19 07:58:09,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 240 transitions, 1994 flow, removed 36 selfloop flow, removed 4 redundant places.
[2023-11-19 07:58:09,610 INFO L231 Difference]: Finished difference. Result has 151 places, 156 transitions, 1662 flow
[2023-11-19 07:58:09,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=1153, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1662, PETRI_PLACES=151, PETRI_TRANSITIONS=156}
[2023-11-19 07:58:09,612 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 117 predicate places.
[2023-11-19 07:58:09,612 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 156 transitions, 1662 flow
[2023-11-19 07:58:09,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 115.75) internal successors, (1852), 16 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:58:09,613 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:58:09,613 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:58:09,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b20a2a-6540-4ad2-b073-2ac4065169b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2023-11-19 07:58:09,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b20a2a-6540-4ad2-b073-2ac4065169b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2023-11-19 07:58:09,827 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2023-11-19 07:58:09,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:58:09,828 INFO L85 PathProgramCache]: Analyzing trace with hash 395955761, now seen corresponding path program 1 times
[2023-11-19 07:58:09,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:58:09,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864467040]
[2023-11-19 07:58:09,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:58:09,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:58:09,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:58:09,981 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2023-11-19 07:58:09,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:58:09,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864467040]
[2023-11-19 07:58:09,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864467040] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 07:58:09,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377262930]
[2023-11-19 07:58:09,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:58:09,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:58:09,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b20a2a-6540-4ad2-b073-2ac4065169b3/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:58:09,984 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b20a2a-6540-4ad2-b073-2ac4065169b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:58:09,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b20a2a-6540-4ad2-b073-2ac4065169b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-11-19 07:58:10,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:58:10,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-11-19 07:58:10,150 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:58:10,211 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2023-11-19 07:58:10,211 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 07:58:10,324 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2023-11-19 07:58:10,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377262930] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-19 07:58:10,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-11-19 07:58:10,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15
[2023-11-19 07:58:10,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258192467]
[2023-11-19 07:58:10,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-11-19 07:58:10,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2023-11-19 07:58:10,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:58:10,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2023-11-19 07:58:10,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240
[2023-11-19 07:58:10,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 309
[2023-11-19 07:58:10,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 156 transitions, 1662 flow. Second operand has 16 states, 16 states have (on average 139.4375) internal successors, (2231), 16 states have internal predecessors, (2231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:58:10,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:58:10,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 309
[2023-11-19 07:58:10,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:58:11,528 INFO L124 PetriNetUnfolderBase]: 2264/4196 cut-off events.
[2023-11-19 07:58:11,529 INFO L125 PetriNetUnfolderBase]: For 9850/9850 co-relation queries the response was YES.
[2023-11-19 07:58:11,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15844 conditions, 4196 events. 2264/4196 cut-off events. For 9850/9850 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 21944 event pairs, 552 based on Foata normal form. 16/4185 useless extension candidates. Maximal degree in co-relation 13618. Up to 975 conditions per place.
[2023-11-19 07:58:11,569 INFO L140 encePairwiseOnDemand]: 301/309 looper letters, 225 selfloop transitions, 83 changer transitions 6/314 dead transitions.
[2023-11-19 07:58:11,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 314 transitions, 3213 flow
[2023-11-19 07:58:11,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2023-11-19 07:58:11,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states.
[2023-11-19 07:58:11,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2460 transitions.
[2023-11-19 07:58:11,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4683038263849229
[2023-11-19 07:58:11,576 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2460 transitions.
[2023-11-19 07:58:11,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2460 transitions.
[2023-11-19 07:58:11,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:58:11,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2460 transitions.
[2023-11-19 07:58:11,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 144.7058823529412) internal successors, (2460), 17 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:58:11,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 309.0) internal successors, (5562), 18 states have internal predecessors, (5562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:58:11,593 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 309.0) internal successors, (5562), 18 states have internal predecessors, (5562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:58:11,593 INFO L175 Difference]: Start difference. First operand has 151 places, 156 transitions, 1662 flow. Second operand 17 states and 2460 transitions.
[2023-11-19 07:58:11,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 314 transitions, 3213 flow
[2023-11-19 07:58:11,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 314 transitions, 3020 flow, removed 64 selfloop flow, removed 7 redundant places.
[2023-11-19 07:58:11,706 INFO L231 Difference]: Finished difference. Result has 163 places, 170 transitions, 1901 flow
[2023-11-19 07:58:11,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=1485, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1901, PETRI_PLACES=163, PETRI_TRANSITIONS=170}
[2023-11-19 07:58:11,707 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 129 predicate places.
[2023-11-19 07:58:11,707 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 170 transitions, 1901 flow
[2023-11-19 07:58:11,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 139.4375) internal successors, (2231), 16 states have internal predecessors, (2231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:58:11,708 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:58:11,708 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:58:11,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b20a2a-6540-4ad2-b073-2ac4065169b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2023-11-19 07:58:11,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b20a2a-6540-4ad2-b073-2ac4065169b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10
[2023-11-19 07:58:11,930 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2023-11-19 07:58:11,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:58:11,930 INFO L85 PathProgramCache]: Analyzing trace with hash -401437983, now seen corresponding path program 1 times
[2023-11-19 07:58:11,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:58:11,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326119682]
[2023-11-19 07:58:11,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:58:11,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:58:11,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:58:13,661 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:58:13,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:58:13,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326119682]
[2023-11-19 07:58:13,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326119682] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 07:58:13,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364708921]
[2023-11-19 07:58:13,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:58:13,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:58:13,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b20a2a-6540-4ad2-b073-2ac4065169b3/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:58:13,663 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b20a2a-6540-4ad2-b073-2ac4065169b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:58:13,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64b20a2a-6540-4ad2-b073-2ac4065169b3/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-11-19 07:58:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:58:13,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 65 conjunts are in the unsatisfiable core
[2023-11-19 07:58:13,824 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:58:14,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1
[2023-11-19 07:58:14,364 INFO L190 IndexEqualityManager]: detected not equals via solver
[2023-11-19 07:58:14,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 19
[2023-11-19 07:58:14,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 32
[2023-11-19 07:58:14,998 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:58:14,998 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 07:58:16,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46