./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/stack-2.i --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 5e519f3a
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_f18c6a1a-a932-47bd-9320-90473ee53b97/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18c6a1a-a932-47bd-9320-90473ee53b97/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18c6a1a-a932-47bd-9320-90473ee53b97/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18c6a1a-a932-47bd-9320-90473ee53b97/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18c6a1a-a932-47bd-9320-90473ee53b97/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18c6a1a-a932-47bd-9320-90473ee53b97/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --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 1c5d098180a5596f0a60d3177354c69a5ee6da68b8191dc75b6c33b291ef0421
--- Real Ultimate output ---
[0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset.
This is Ultimate 0.2.2-dev-5e519f3
[2022-11-02 21:07:00,192 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2022-11-02 21:07:00,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2022-11-02 21:07:00,245 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-11-02 21:07:00,246 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-11-02 21:07:00,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-11-02 21:07:00,255 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-11-02 21:07:00,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2022-11-02 21:07:00,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-11-02 21:07:00,268 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-11-02 21:07:00,269 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2022-11-02 21:07:00,271 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-11-02 21:07:00,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-11-02 21:07:00,273 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-11-02 21:07:00,275 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-11-02 21:07:00,276 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-11-02 21:07:00,277 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-11-02 21:07:00,278 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-11-02 21:07:00,281 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-11-02 21:07:00,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2022-11-02 21:07:00,285 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-11-02 21:07:00,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-11-02 21:07:00,287 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2022-11-02 21:07:00,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-11-02 21:07:00,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-11-02 21:07:00,293 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-11-02 21:07:00,293 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-11-02 21:07:00,294 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-11-02 21:07:00,295 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-11-02 21:07:00,296 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-11-02 21:07:00,297 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-11-02 21:07:00,298 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-11-02 21:07:00,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-11-02 21:07:00,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2022-11-02 21:07:00,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-11-02 21:07:00,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2022-11-02 21:07:00,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-11-02 21:07:00,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-11-02 21:07:00,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2022-11-02 21:07:00,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2022-11-02 21:07:00,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2022-11-02 21:07:00,307 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18c6a1a-a932-47bd-9320-90473ee53b97/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf
[2022-11-02 21:07:00,328 INFO L113 SettingsManager]: Loading preferences was successful
[2022-11-02 21:07:00,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2022-11-02 21:07:00,329 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-11-02 21:07:00,329 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-11-02 21:07:00,330 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-11-02 21:07:00,331 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-11-02 21:07:00,331 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-11-02 21:07:00,332 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2022-11-02 21:07:00,332 INFO L138 SettingsManager]: * Use SBE=true
[2022-11-02 21:07:00,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-11-02 21:07:00,333 INFO L138 SettingsManager]: * sizeof long=4
[2022-11-02 21:07:00,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2022-11-02 21:07:00,334 INFO L138 SettingsManager]: * sizeof POINTER=4
[2022-11-02 21:07:00,334 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2022-11-02 21:07:00,334 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2022-11-02 21:07:00,334 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-11-02 21:07:00,335 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2022-11-02 21:07:00,335 INFO L138 SettingsManager]: * sizeof long double=12
[2022-11-02 21:07:00,335 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2022-11-02 21:07:00,336 INFO L138 SettingsManager]: * Use constant arrays=true
[2022-11-02 21:07:00,336 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2022-11-02 21:07:00,336 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-11-02 21:07:00,337 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2022-11-02 21:07:00,337 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2022-11-02 21:07:00,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-02 21:07:00,338 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-11-02 21:07:00,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2022-11-02 21:07:00,338 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-11-02 21:07:00,339 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2022-11-02 21:07:00,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-11-02 21:07:00,339 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2022-11-02 21:07:00,340 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2022-11-02 21:07:00,340 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-11-02 21:07:00,340 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
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_f18c6a1a-a932-47bd-9320-90473ee53b97/bin/uautomizer-Dbtcem3rbc/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18c6a1a-a932-47bd-9320-90473ee53b97/bin/uautomizer-Dbtcem3rbc
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c5d098180a5596f0a60d3177354c69a5ee6da68b8191dc75b6c33b291ef0421
[2022-11-02 21:07:00,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2022-11-02 21:07:00,669 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-11-02 21:07:00,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-11-02 21:07:00,673 INFO L271 PluginConnector]: Initializing CDTParser...
[2022-11-02 21:07:00,674 INFO L275 PluginConnector]: CDTParser initialized
[2022-11-02 21:07:00,675 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18c6a1a-a932-47bd-9320-90473ee53b97/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread/stack-2.i
[2022-11-02 21:07:00,765 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18c6a1a-a932-47bd-9320-90473ee53b97/bin/uautomizer-Dbtcem3rbc/data/5797554ea/65d50c3ea6204bffae1087e02fe651dc/FLAG569c66786
[2022-11-02 21:07:01,321 INFO L306 CDTParser]: Found 1 translation units.
[2022-11-02 21:07:01,327 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18c6a1a-a932-47bd-9320-90473ee53b97/sv-benchmarks/c/pthread/stack-2.i
[2022-11-02 21:07:01,348 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18c6a1a-a932-47bd-9320-90473ee53b97/bin/uautomizer-Dbtcem3rbc/data/5797554ea/65d50c3ea6204bffae1087e02fe651dc/FLAG569c66786
[2022-11-02 21:07:01,759 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18c6a1a-a932-47bd-9320-90473ee53b97/bin/uautomizer-Dbtcem3rbc/data/5797554ea/65d50c3ea6204bffae1087e02fe651dc
[2022-11-02 21:07:01,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-11-02 21:07:01,762 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2022-11-02 21:07:01,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-11-02 21:07:01,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-11-02 21:07:01,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2022-11-02 21:07:01,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:07:01" (1/1) ...
[2022-11-02 21:07:01,770 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13f93c9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:01, skipping insertion in model container
[2022-11-02 21:07:01,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:07:01" (1/1) ...
[2022-11-02 21:07:01,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2022-11-02 21:07:01,817 INFO L178 MainTranslator]: Built tables and reachable declarations
[2022-11-02 21:07:02,360 WARN L230 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_f18c6a1a-a932-47bd-9320-90473ee53b97/sv-benchmarks/c/pthread/stack-2.i[41520,41533]
[2022-11-02 21:07:02,401 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-11-02 21:07:02,414 INFO L203 MainTranslator]: Completed pre-run
[2022-11-02 21:07:02,455 WARN L230 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_f18c6a1a-a932-47bd-9320-90473ee53b97/sv-benchmarks/c/pthread/stack-2.i[41520,41533]
[2022-11-02 21:07:02,465 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-11-02 21:07:02,536 INFO L208 MainTranslator]: Completed translation
[2022-11-02 21:07:02,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:02 WrapperNode
[2022-11-02 21:07:02,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-11-02 21:07:02,538 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-11-02 21:07:02,538 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-11-02 21:07:02,538 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2022-11-02 21:07:02,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:02" (1/1) ...
[2022-11-02 21:07:02,568 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:02" (1/1) ...
[2022-11-02 21:07:02,604 INFO L138 Inliner]: procedures = 277, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 161
[2022-11-02 21:07:02,605 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-11-02 21:07:02,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-11-02 21:07:02,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2022-11-02 21:07:02,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2022-11-02 21:07:02,619 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:02" (1/1) ...
[2022-11-02 21:07:02,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:02" (1/1) ...
[2022-11-02 21:07:02,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:02" (1/1) ...
[2022-11-02 21:07:02,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:02" (1/1) ...
[2022-11-02 21:07:02,632 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:02" (1/1) ...
[2022-11-02 21:07:02,644 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:02" (1/1) ...
[2022-11-02 21:07:02,647 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:02" (1/1) ...
[2022-11-02 21:07:02,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:02" (1/1) ...
[2022-11-02 21:07:02,651 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-11-02 21:07:02,652 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-11-02 21:07:02,652 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2022-11-02 21:07:02,653 INFO L275 PluginConnector]: RCFGBuilder initialized
[2022-11-02 21:07:02,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:02" (1/1) ...
[2022-11-02 21:07:02,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-02 21:07:02,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18c6a1a-a932-47bd-9320-90473ee53b97/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 21:07:02,703 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18c6a1a-a932-47bd-9320-90473ee53b97/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-11-02 21:07:02,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18c6a1a-a932-47bd-9320-90473ee53b97/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-11-02 21:07:02,743 INFO L130 BoogieDeclarations]: Found specification of procedure t1
[2022-11-02 21:07:02,744 INFO L138 BoogieDeclarations]: Found implementation of procedure t1
[2022-11-02 21:07:02,744 INFO L130 BoogieDeclarations]: Found specification of procedure t2
[2022-11-02 21:07:02,744 INFO L138 BoogieDeclarations]: Found implementation of procedure t2
[2022-11-02 21:07:02,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2022-11-02 21:07:02,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-11-02 21:07:02,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2022-11-02 21:07:02,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2022-11-02 21:07:02,745 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock
[2022-11-02 21:07:02,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-11-02 21:07:02,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2022-11-02 21:07:02,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-11-02 21:07:02,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-11-02 21:07:02,747 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement
[2022-11-02 21:07:02,884 INFO L235 CfgBuilder]: Building ICFG
[2022-11-02 21:07:02,891 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation
[2022-11-02 21:07:03,262 INFO L276 CfgBuilder]: Performing block encoding
[2022-11-02 21:07:03,272 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-11-02 21:07:03,275 INFO L300 CfgBuilder]: Removed 2 assume(true) statements.
[2022-11-02 21:07:03,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:07:03 BoogieIcfgContainer
[2022-11-02 21:07:03,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-11-02 21:07:03,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-11-02 21:07:03,284 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2022-11-02 21:07:03,287 INFO L275 PluginConnector]: TraceAbstraction initialized
[2022-11-02 21:07:03,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:07:01" (1/3) ...
[2022-11-02 21:07:03,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e21209 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:07:03, skipping insertion in model container
[2022-11-02 21:07:03,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:02" (2/3) ...
[2022-11-02 21:07:03,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e21209 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:07:03, skipping insertion in model container
[2022-11-02 21:07:03,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:07:03" (3/3) ...
[2022-11-02 21:07:03,291 INFO L112 eAbstractionObserver]: Analyzing ICFG stack-2.i
[2022-11-02 21:07:03,301 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2022-11-02 21:07:03,342 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-11-02 21:07:03,342 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations.
[2022-11-02 21:07:03,342 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2022-11-02 21:07:03,496 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions.
[2022-11-02 21:07:03,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 185 transitions, 386 flow
[2022-11-02 21:07:03,648 INFO L130 PetriNetUnfolder]: 10/183 cut-off events.
[2022-11-02 21:07:03,648 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES.
[2022-11-02 21:07:03,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 183 events. 10/183 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 436 event pairs, 0 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 135. Up to 3 conditions per place.
[2022-11-02 21:07:03,663 INFO L82 GeneralOperation]: Start removeDead. Operand has 182 places, 185 transitions, 386 flow
[2022-11-02 21:07:03,674 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 173 transitions, 355 flow
[2022-11-02 21:07:03,683 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-11-02 21:07:03,690 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=LoopsAndPotentialCycles, 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;@7771f09, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-11-02 21:07:03,690 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations.
[2022-11-02 21:07:03,731 INFO L130 PetriNetUnfolder]: 4/140 cut-off events.
[2022-11-02 21:07:03,732 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES.
[2022-11-02 21:07:03,732 INFO L200 CegarLoopForPetriNet]: Found error trace
[2022-11-02 21:07:03,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 21:07:03,733 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2022-11-02 21:07:03,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:07:03,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1631243722, now seen corresponding path program 1 times
[2022-11-02 21:07:03,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:07:03,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637816313]
[2022-11-02 21:07:03,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:07:03,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:07:03,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:07:04,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 21:07:04,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 21:07:04,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637816313]
[2022-11-02 21:07:04,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637816313] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:07:04,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:07:04,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-02 21:07:04,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22602896]
[2022-11-02 21:07:04,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:07:04,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-02 21:07:04,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 21:07:04,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-02 21:07:04,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-02 21:07:04,316 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 185
[2022-11-02 21:07:04,326 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 173 transitions, 355 flow. Second operand has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 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)
[2022-11-02 21:07:04,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-02 21:07:04,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 185
[2022-11-02 21:07:04,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2022-11-02 21:07:04,625 INFO L130 PetriNetUnfolder]: 91/896 cut-off events.
[2022-11-02 21:07:04,625 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES.
[2022-11-02 21:07:04,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1058 conditions, 896 events. 91/896 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5328 event pairs, 15 based on Foata normal form. 61/885 useless extension candidates. Maximal degree in co-relation 903. Up to 96 conditions per place.
[2022-11-02 21:07:04,639 INFO L137 encePairwiseOnDemand]: 176/185 looper letters, 19 selfloop transitions, 3 changer transitions 0/173 dead transitions.
[2022-11-02 21:07:04,640 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 173 transitions, 405 flow
[2022-11-02 21:07:04,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2022-11-02 21:07:04,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2022-11-02 21:07:04,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 524 transitions.
[2022-11-02 21:07:04,666 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9441441441441442
[2022-11-02 21:07:04,667 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 524 transitions.
[2022-11-02 21:07:04,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 524 transitions.
[2022-11-02 21:07:04,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2022-11-02 21:07:04,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 524 transitions.
[2022-11-02 21:07:04,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 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)
[2022-11-02 21:07:04,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 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)
[2022-11-02 21:07:04,689 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 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)
[2022-11-02 21:07:04,691 INFO L175 Difference]: Start difference. First operand has 170 places, 173 transitions, 355 flow. Second operand 3 states and 524 transitions.
[2022-11-02 21:07:04,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 173 transitions, 405 flow
[2022-11-02 21:07:04,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 173 transitions, 397 flow, removed 0 selfloop flow, removed 3 redundant places.
[2022-11-02 21:07:04,700 INFO L231 Difference]: Finished difference. Result has 166 places, 166 transitions, 351 flow
[2022-11-02 21:07:04,703 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=351, PETRI_PLACES=166, PETRI_TRANSITIONS=166}
[2022-11-02 21:07:04,714 INFO L287 CegarLoopForPetriNet]: 170 programPoint places, -4 predicate places.
[2022-11-02 21:07:04,714 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 166 transitions, 351 flow
[2022-11-02 21:07:04,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 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)
[2022-11-02 21:07:04,715 INFO L200 CegarLoopForPetriNet]: Found error trace
[2022-11-02 21:07:04,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 21:07:04,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-11-02 21:07:04,717 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2022-11-02 21:07:04,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:07:04,719 INFO L85 PathProgramCache]: Analyzing trace with hash -959432383, now seen corresponding path program 1 times
[2022-11-02 21:07:04,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:07:04,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732529864]
[2022-11-02 21:07:04,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:07:04,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:07:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:07:05,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 21:07:05,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 21:07:05,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732529864]
[2022-11-02 21:07:05,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732529864] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:07:05,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:07:05,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-02 21:07:05,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129960769]
[2022-11-02 21:07:05,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:07:05,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-02 21:07:05,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 21:07:05,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-02 21:07:05,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-02 21:07:05,023 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 185
[2022-11-02 21:07:05,024 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 166 transitions, 351 flow. Second operand has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 21:07:05,024 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-02 21:07:05,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 185
[2022-11-02 21:07:05,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2022-11-02 21:07:05,109 INFO L130 PetriNetUnfolder]: 21/425 cut-off events.
[2022-11-02 21:07:05,109 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES.
[2022-11-02 21:07:05,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 471 conditions, 425 events. 21/425 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1371 event pairs, 4 based on Foata normal form. 0/399 useless extension candidates. Maximal degree in co-relation 376. Up to 16 conditions per place.
[2022-11-02 21:07:05,113 INFO L137 encePairwiseOnDemand]: 182/185 looper letters, 9 selfloop transitions, 2 changer transitions 0/169 dead transitions.
[2022-11-02 21:07:05,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 169 transitions, 379 flow
[2022-11-02 21:07:05,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2022-11-02 21:07:05,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2022-11-02 21:07:05,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 522 transitions.
[2022-11-02 21:07:05,116 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9405405405405406
[2022-11-02 21:07:05,116 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 522 transitions.
[2022-11-02 21:07:05,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 522 transitions.
[2022-11-02 21:07:05,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2022-11-02 21:07:05,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 522 transitions.
[2022-11-02 21:07:05,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 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)
[2022-11-02 21:07:05,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 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)
[2022-11-02 21:07:05,122 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 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)
[2022-11-02 21:07:05,122 INFO L175 Difference]: Start difference. First operand has 166 places, 166 transitions, 351 flow. Second operand 3 states and 522 transitions.
[2022-11-02 21:07:05,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 169 transitions, 379 flow
[2022-11-02 21:07:05,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 169 transitions, 377 flow, removed 0 selfloop flow, removed 1 redundant places.
[2022-11-02 21:07:05,127 INFO L231 Difference]: Finished difference. Result has 168 places, 166 transitions, 356 flow
[2022-11-02 21:07:05,128 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=356, PETRI_PLACES=168, PETRI_TRANSITIONS=166}
[2022-11-02 21:07:05,129 INFO L287 CegarLoopForPetriNet]: 170 programPoint places, -2 predicate places.
[2022-11-02 21:07:05,129 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 166 transitions, 356 flow
[2022-11-02 21:07:05,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 21:07:05,130 INFO L200 CegarLoopForPetriNet]: Found error trace
[2022-11-02 21:07:05,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 21:07:05,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-11-02 21:07:05,131 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2022-11-02 21:07:05,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:07:05,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1579701380, now seen corresponding path program 1 times
[2022-11-02 21:07:05,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:07:05,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925515582]
[2022-11-02 21:07:05,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:07:05,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:07:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:07:05,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 21:07:05,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 21:07:05,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925515582]
[2022-11-02 21:07:05,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925515582] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:07:05,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:07:05,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-11-02 21:07:05,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832644835]
[2022-11-02 21:07:05,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:07:05,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-02 21:07:05,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 21:07:05,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-02 21:07:05,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-11-02 21:07:05,266 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 185
[2022-11-02 21:07:05,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 166 transitions, 356 flow. Second operand has 4 states, 4 states have (on average 166.75) internal successors, (667), 4 states have internal predecessors, (667), 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)
[2022-11-02 21:07:05,268 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-02 21:07:05,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 185
[2022-11-02 21:07:05,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2022-11-02 21:07:05,450 INFO L130 PetriNetUnfolder]: 41/522 cut-off events.
[2022-11-02 21:07:05,451 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES.
[2022-11-02 21:07:05,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 668 conditions, 522 events. 41/522 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2012 event pairs, 13 based on Foata normal form. 0/491 useless extension candidates. Maximal degree in co-relation 403. Up to 37 conditions per place.
[2022-11-02 21:07:05,456 INFO L137 encePairwiseOnDemand]: 180/185 looper letters, 16 selfloop transitions, 4 changer transitions 0/174 dead transitions.
[2022-11-02 21:07:05,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 174 transitions, 417 flow
[2022-11-02 21:07:05,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-11-02 21:07:05,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states.
[2022-11-02 21:07:05,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 681 transitions.
[2022-11-02 21:07:05,460 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9202702702702703
[2022-11-02 21:07:05,460 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 681 transitions.
[2022-11-02 21:07:05,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 681 transitions.
[2022-11-02 21:07:05,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2022-11-02 21:07:05,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 681 transitions.
[2022-11-02 21:07:05,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 170.25) internal successors, (681), 4 states have internal predecessors, (681), 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)
[2022-11-02 21:07:05,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 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)
[2022-11-02 21:07:05,469 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 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)
[2022-11-02 21:07:05,469 INFO L175 Difference]: Start difference. First operand has 168 places, 166 transitions, 356 flow. Second operand 4 states and 681 transitions.
[2022-11-02 21:07:05,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 174 transitions, 417 flow
[2022-11-02 21:07:05,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 174 transitions, 415 flow, removed 0 selfloop flow, removed 1 redundant places.
[2022-11-02 21:07:05,476 INFO L231 Difference]: Finished difference. Result has 172 places, 169 transitions, 382 flow
[2022-11-02 21:07:05,476 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=382, PETRI_PLACES=172, PETRI_TRANSITIONS=169}
[2022-11-02 21:07:05,479 INFO L287 CegarLoopForPetriNet]: 170 programPoint places, 2 predicate places.
[2022-11-02 21:07:05,479 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 169 transitions, 382 flow
[2022-11-02 21:07:05,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 166.75) internal successors, (667), 4 states have internal predecessors, (667), 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)
[2022-11-02 21:07:05,480 INFO L200 CegarLoopForPetriNet]: Found error trace
[2022-11-02 21:07:05,481 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 21:07:05,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-11-02 21:07:05,482 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2022-11-02 21:07:05,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:07:05,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1819207550, now seen corresponding path program 1 times
[2022-11-02 21:07:05,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:07:05,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879507809]
[2022-11-02 21:07:05,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:07:05,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:07:05,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:07:05,856 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 21:07:05,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 21:07:05,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879507809]
[2022-11-02 21:07:05,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879507809] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-02 21:07:05,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872311088]
[2022-11-02 21:07:05,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:07:05,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 21:07:05,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18c6a1a-a932-47bd-9320-90473ee53b97/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 21:07:05,874 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18c6a1a-a932-47bd-9320-90473ee53b97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-02 21:07:05,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18c6a1a-a932-47bd-9320-90473ee53b97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-11-02 21:07:06,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:07:06,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 4 conjunts are in the unsatisfiable core
[2022-11-02 21:07:06,092 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 21:07:06,360 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 21:07:06,360 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 21:07:06,540 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 21:07:06,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872311088] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 21:07:06,542 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-11-02 21:07:06,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10
[2022-11-02 21:07:06,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400734296]
[2022-11-02 21:07:06,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-11-02 21:07:06,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2022-11-02 21:07:06,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 21:07:06,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2022-11-02 21:07:06,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90
[2022-11-02 21:07:06,549 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 185
[2022-11-02 21:07:06,552 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 169 transitions, 382 flow. Second operand has 10 states, 10 states have (on average 164.5) internal successors, (1645), 10 states have internal predecessors, (1645), 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)
[2022-11-02 21:07:06,552 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-02 21:07:06,552 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 185
[2022-11-02 21:07:06,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2022-11-02 21:07:07,075 INFO L130 PetriNetUnfolder]: 187/1846 cut-off events.
[2022-11-02 21:07:07,076 INFO L131 PetriNetUnfolder]: For 81/81 co-relation queries the response was YES.
[2022-11-02 21:07:07,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2409 conditions, 1846 events. 187/1846 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 12140 event pairs, 33 based on Foata normal form. 8/1747 useless extension candidates. Maximal degree in co-relation 1925. Up to 135 conditions per place.
[2022-11-02 21:07:07,097 INFO L137 encePairwiseOnDemand]: 179/185 looper letters, 48 selfloop transitions, 14 changer transitions 0/215 dead transitions.
[2022-11-02 21:07:07,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 215 transitions, 631 flow
[2022-11-02 21:07:07,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2022-11-02 21:07:07,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states.
[2022-11-02 21:07:07,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1684 transitions.
[2022-11-02 21:07:07,103 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9102702702702703
[2022-11-02 21:07:07,103 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1684 transitions.
[2022-11-02 21:07:07,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1684 transitions.
[2022-11-02 21:07:07,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2022-11-02 21:07:07,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1684 transitions.
[2022-11-02 21:07:07,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 168.4) internal successors, (1684), 10 states have internal predecessors, (1684), 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)
[2022-11-02 21:07:07,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 185.0) internal successors, (2035), 11 states have internal predecessors, (2035), 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)
[2022-11-02 21:07:07,121 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 185.0) internal successors, (2035), 11 states have internal predecessors, (2035), 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)
[2022-11-02 21:07:07,121 INFO L175 Difference]: Start difference. First operand has 172 places, 169 transitions, 382 flow. Second operand 10 states and 1684 transitions.
[2022-11-02 21:07:07,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 215 transitions, 631 flow
[2022-11-02 21:07:07,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 215 transitions, 629 flow, removed 0 selfloop flow, removed 1 redundant places.
[2022-11-02 21:07:07,130 INFO L231 Difference]: Finished difference. Result has 183 places, 182 transitions, 474 flow
[2022-11-02 21:07:07,130 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=474, PETRI_PLACES=183, PETRI_TRANSITIONS=182}
[2022-11-02 21:07:07,132 INFO L287 CegarLoopForPetriNet]: 170 programPoint places, 13 predicate places.
[2022-11-02 21:07:07,132 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 182 transitions, 474 flow
[2022-11-02 21:07:07,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 164.5) internal successors, (1645), 10 states have internal predecessors, (1645), 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)
[2022-11-02 21:07:07,134 INFO L200 CegarLoopForPetriNet]: Found error trace
[2022-11-02 21:07:07,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 21:07:07,174 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18c6a1a-a932-47bd-9320-90473ee53b97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2022-11-02 21:07:07,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18c6a1a-a932-47bd-9320-90473ee53b97/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3
[2022-11-02 21:07:07,359 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2022-11-02 21:07:07,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:07:07,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1427019792, now seen corresponding path program 1 times
[2022-11-02 21:07:07,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:07:07,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039581169]
[2022-11-02 21:07:07,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:07:07,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:07:07,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:07:07,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 21:07:07,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 21:07:07,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039581169]
[2022-11-02 21:07:07,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039581169] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:07:07,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:07:07,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-02 21:07:07,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994326063]
[2022-11-02 21:07:07,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:07:07,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-02 21:07:07,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 21:07:07,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-02 21:07:07,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-02 21:07:07,557 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 185
[2022-11-02 21:07:07,558 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 182 transitions, 474 flow. Second operand has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 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)
[2022-11-02 21:07:07,558 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-02 21:07:07,558 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 185
[2022-11-02 21:07:07,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2022-11-02 21:07:07,750 INFO L130 PetriNetUnfolder]: 53/1081 cut-off events.
[2022-11-02 21:07:07,750 INFO L131 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES.
[2022-11-02 21:07:07,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1377 conditions, 1081 events. 53/1081 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 4730 event pairs, 10 based on Foata normal form. 11/1047 useless extension candidates. Maximal degree in co-relation 843. Up to 46 conditions per place.
[2022-11-02 21:07:07,758 INFO L137 encePairwiseOnDemand]: 181/185 looper letters, 12 selfloop transitions, 4 changer transitions 0/179 dead transitions.
[2022-11-02 21:07:07,758 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 179 transitions, 485 flow
[2022-11-02 21:07:07,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2022-11-02 21:07:07,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2022-11-02 21:07:07,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 507 transitions.
[2022-11-02 21:07:07,760 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9135135135135135
[2022-11-02 21:07:07,761 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 507 transitions.
[2022-11-02 21:07:07,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 507 transitions.
[2022-11-02 21:07:07,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2022-11-02 21:07:07,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 507 transitions.
[2022-11-02 21:07:07,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 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)
[2022-11-02 21:07:07,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 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)
[2022-11-02 21:07:07,765 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 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)
[2022-11-02 21:07:07,765 INFO L175 Difference]: Start difference. First operand has 183 places, 182 transitions, 474 flow. Second operand 3 states and 507 transitions.
[2022-11-02 21:07:07,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 179 transitions, 485 flow
[2022-11-02 21:07:07,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 179 transitions, 473 flow, removed 5 selfloop flow, removed 1 redundant places.
[2022-11-02 21:07:07,787 INFO L231 Difference]: Finished difference. Result has 183 places, 177 transitions, 442 flow
[2022-11-02 21:07:07,788 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=442, PETRI_PLACES=183, PETRI_TRANSITIONS=177}
[2022-11-02 21:07:07,789 INFO L287 CegarLoopForPetriNet]: 170 programPoint places, 13 predicate places.
[2022-11-02 21:07:07,789 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 177 transitions, 442 flow
[2022-11-02 21:07:07,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 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)
[2022-11-02 21:07:07,790 INFO L200 CegarLoopForPetriNet]: Found error trace
[2022-11-02 21:07:07,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 21:07:07,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-11-02 21:07:07,791 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2022-11-02 21:07:07,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:07:07,792 INFO L85 PathProgramCache]: Analyzing trace with hash 569749527, now seen corresponding path program 1 times
[2022-11-02 21:07:07,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:07:07,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199071216]
[2022-11-02 21:07:07,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:07:07,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:07:07,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:07:08,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 21:07:08,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 21:07:08,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199071216]
[2022-11-02 21:07:08,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199071216] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:07:08,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:07:08,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2022-11-02 21:07:08,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059050762]
[2022-11-02 21:07:08,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:07:08,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-11-02 21:07:08,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 21:07:08,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-11-02 21:07:08,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2022-11-02 21:07:08,013 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 185
[2022-11-02 21:07:08,014 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 177 transitions, 442 flow. Second operand has 7 states, 7 states have (on average 154.28571428571428) internal successors, (1080), 7 states have internal predecessors, (1080), 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)
[2022-11-02 21:07:08,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-02 21:07:08,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 185
[2022-11-02 21:07:08,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2022-11-02 21:07:08,400 INFO L130 PetriNetUnfolder]: 119/1236 cut-off events.
[2022-11-02 21:07:08,401 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES.
[2022-11-02 21:07:08,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1843 conditions, 1236 events. 119/1236 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 6115 event pairs, 19 based on Foata normal form. 0/1183 useless extension candidates. Maximal degree in co-relation 1239. Up to 178 conditions per place.
[2022-11-02 21:07:08,408 INFO L137 encePairwiseOnDemand]: 174/185 looper letters, 49 selfloop transitions, 13 changer transitions 0/205 dead transitions.
[2022-11-02 21:07:08,408 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 205 transitions, 651 flow
[2022-11-02 21:07:08,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2022-11-02 21:07:08,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states.
[2022-11-02 21:07:08,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1425 transitions.
[2022-11-02 21:07:08,412 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8558558558558559
[2022-11-02 21:07:08,413 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1425 transitions.
[2022-11-02 21:07:08,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1425 transitions.
[2022-11-02 21:07:08,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2022-11-02 21:07:08,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1425 transitions.
[2022-11-02 21:07:08,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 158.33333333333334) internal successors, (1425), 9 states have internal predecessors, (1425), 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)
[2022-11-02 21:07:08,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 185.0) internal successors, (1850), 10 states have internal predecessors, (1850), 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)
[2022-11-02 21:07:08,422 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 185.0) internal successors, (1850), 10 states have internal predecessors, (1850), 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)
[2022-11-02 21:07:08,422 INFO L175 Difference]: Start difference. First operand has 183 places, 177 transitions, 442 flow. Second operand 9 states and 1425 transitions.
[2022-11-02 21:07:08,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 205 transitions, 651 flow
[2022-11-02 21:07:08,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 205 transitions, 647 flow, removed 0 selfloop flow, removed 1 redundant places.
[2022-11-02 21:07:08,428 INFO L231 Difference]: Finished difference. Result has 195 places, 184 transitions, 526 flow
[2022-11-02 21:07:08,429 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=526, PETRI_PLACES=195, PETRI_TRANSITIONS=184}
[2022-11-02 21:07:08,429 INFO L287 CegarLoopForPetriNet]: 170 programPoint places, 25 predicate places.
[2022-11-02 21:07:08,430 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 184 transitions, 526 flow
[2022-11-02 21:07:08,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 154.28571428571428) internal successors, (1080), 7 states have internal predecessors, (1080), 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)
[2022-11-02 21:07:08,430 INFO L200 CegarLoopForPetriNet]: Found error trace
[2022-11-02 21:07:08,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 21:07:08,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-11-02 21:07:08,431 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2022-11-02 21:07:08,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:07:08,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1194335221, now seen corresponding path program 1 times
[2022-11-02 21:07:08,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:07:08,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297257746]
[2022-11-02 21:07:08,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:07:08,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:07:08,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:07:11,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 21:07:11,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 21:07:11,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297257746]
[2022-11-02 21:07:11,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297257746] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:07:11,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:07:11,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28
[2022-11-02 21:07:11,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210688609]
[2022-11-02 21:07:11,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:07:11,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states
[2022-11-02 21:07:11,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 21:07:11,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2022-11-02 21:07:11,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=675, Unknown=0, NotChecked=0, Total=756
[2022-11-02 21:07:11,393 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 185
[2022-11-02 21:07:11,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 184 transitions, 526 flow. Second operand has 28 states, 28 states have (on average 95.57142857142857) internal successors, (2676), 28 states have internal predecessors, (2676), 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)
[2022-11-02 21:07:11,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-02 21:07:11,397 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 185
[2022-11-02 21:07:11,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2022-11-02 21:07:15,938 INFO L130 PetriNetUnfolder]: 1048/4073 cut-off events.
[2022-11-02 21:07:15,939 INFO L131 PetriNetUnfolder]: For 605/608 co-relation queries the response was YES.
[2022-11-02 21:07:15,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7610 conditions, 4073 events. 1048/4073 cut-off events. For 605/608 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 29780 event pairs, 351 based on Foata normal form. 5/3948 useless extension candidates. Maximal degree in co-relation 4256. Up to 1516 conditions per place.
[2022-11-02 21:07:15,973 INFO L137 encePairwiseOnDemand]: 148/185 looper letters, 281 selfloop transitions, 43 changer transitions 5/418 dead transitions.
[2022-11-02 21:07:15,973 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 418 transitions, 1787 flow
[2022-11-02 21:07:15,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states.
[2022-11-02 21:07:15,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states.
[2022-11-02 21:07:15,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3665 transitions.
[2022-11-02 21:07:15,983 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5503003003003003
[2022-11-02 21:07:15,984 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 3665 transitions.
[2022-11-02 21:07:15,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 3665 transitions.
[2022-11-02 21:07:15,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2022-11-02 21:07:15,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 3665 transitions.
[2022-11-02 21:07:15,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 101.80555555555556) internal successors, (3665), 36 states have internal predecessors, (3665), 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)
[2022-11-02 21:07:16,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 185.0) internal successors, (6845), 37 states have internal predecessors, (6845), 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)
[2022-11-02 21:07:16,014 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 185.0) internal successors, (6845), 37 states have internal predecessors, (6845), 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)
[2022-11-02 21:07:16,014 INFO L175 Difference]: Start difference. First operand has 195 places, 184 transitions, 526 flow. Second operand 36 states and 3665 transitions.
[2022-11-02 21:07:16,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 418 transitions, 1787 flow
[2022-11-02 21:07:16,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 418 transitions, 1776 flow, removed 2 selfloop flow, removed 3 redundant places.
[2022-11-02 21:07:16,028 INFO L231 Difference]: Finished difference. Result has 254 places, 220 transitions, 841 flow
[2022-11-02 21:07:16,029 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=841, PETRI_PLACES=254, PETRI_TRANSITIONS=220}
[2022-11-02 21:07:16,029 INFO L287 CegarLoopForPetriNet]: 170 programPoint places, 84 predicate places.
[2022-11-02 21:07:16,030 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 220 transitions, 841 flow
[2022-11-02 21:07:16,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 95.57142857142857) internal successors, (2676), 28 states have internal predecessors, (2676), 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)
[2022-11-02 21:07:16,031 INFO L200 CegarLoopForPetriNet]: Found error trace
[2022-11-02 21:07:16,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 21:07:16,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2022-11-02 21:07:16,032 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2022-11-02 21:07:16,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:07:16,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1145094813, now seen corresponding path program 2 times
[2022-11-02 21:07:16,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:07:16,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998358149]
[2022-11-02 21:07:16,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:07:16,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:07:16,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 21:07:18,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 21:07:18,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 21:07:18,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998358149]
[2022-11-02 21:07:18,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998358149] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 21:07:18,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 21:07:18,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27
[2022-11-02 21:07:18,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663437973]
[2022-11-02 21:07:18,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 21:07:18,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states
[2022-11-02 21:07:18,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 21:07:18,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants.
[2022-11-02 21:07:18,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=616, Unknown=0, NotChecked=0, Total=702
[2022-11-02 21:07:18,303 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 185
[2022-11-02 21:07:18,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 220 transitions, 841 flow. Second operand has 27 states, 27 states have (on average 96.66666666666667) internal successors, (2610), 27 states have internal predecessors, (2610), 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)
[2022-11-02 21:07:18,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-02 21:07:18,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 185
[2022-11-02 21:07:18,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2022-11-02 21:07:26,138 INFO L130 PetriNetUnfolder]: 1419/5642 cut-off events.
[2022-11-02 21:07:26,138 INFO L131 PetriNetUnfolder]: For 1865/1865 co-relation queries the response was YES.
[2022-11-02 21:07:26,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11906 conditions, 5642 events. 1419/5642 cut-off events. For 1865/1865 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 43128 event pairs, 122 based on Foata normal form. 16/5566 useless extension candidates. Maximal degree in co-relation 10056. Up to 1303 conditions per place.
[2022-11-02 21:07:26,207 INFO L137 encePairwiseOnDemand]: 151/185 looper letters, 334 selfloop transitions, 89 changer transitions 7/519 dead transitions.
[2022-11-02 21:07:26,207 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 519 transitions, 2707 flow
[2022-11-02 21:07:26,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states.
[2022-11-02 21:07:26,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states.
[2022-11-02 21:07:26,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 5562 transitions.
[2022-11-02 21:07:26,221 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5466339066339067
[2022-11-02 21:07:26,221 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 5562 transitions.
[2022-11-02 21:07:26,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 5562 transitions.
[2022-11-02 21:07:26,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2022-11-02 21:07:26,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 5562 transitions.
[2022-11-02 21:07:26,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 101.12727272727273) internal successors, (5562), 55 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)
[2022-11-02 21:07:26,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 185.0) internal successors, (10360), 56 states have internal predecessors, (10360), 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)
[2022-11-02 21:07:26,271 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 185.0) internal successors, (10360), 56 states have internal predecessors, (10360), 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)
[2022-11-02 21:07:26,279 INFO L175 Difference]: Start difference. First operand has 254 places, 220 transitions, 841 flow. Second operand 55 states and 5562 transitions.
[2022-11-02 21:07:26,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 519 transitions, 2707 flow
[2022-11-02 21:07:26,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 519 transitions, 2685 flow, removed 5 selfloop flow, removed 6 redundant places.
[2022-11-02 21:07:26,304 INFO L231 Difference]: Finished difference. Result has 339 places, 270 transitions, 1475 flow
[2022-11-02 21:07:26,305 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=819, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=1475, PETRI_PLACES=339, PETRI_TRANSITIONS=270}
[2022-11-02 21:07:26,307 INFO L287 CegarLoopForPetriNet]: 170 programPoint places, 169 predicate places.
[2022-11-02 21:07:26,307 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 270 transitions, 1475 flow
[2022-11-02 21:07:26,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 96.66666666666667) internal successors, (2610), 27 states have internal predecessors, (2610), 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)
[2022-11-02 21:07:26,309 INFO L200 CegarLoopForPetriNet]: Found error trace
[2022-11-02 21:07:26,309 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 21:07:26,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2022-11-02 21:07:26,310 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2022-11-02 21:07:26,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 21:07:26,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1405303785, now seen corresponding path program 1 times
[2022-11-02 21:07:26,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 21:07:26,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154498518]
[2022-11-02 21:07:26,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 21:07:26,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 21:07:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-11-02 21:07:26,379 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2022-11-02 21:07:26,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-11-02 21:07:26,484 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2022-11-02 21:07:26,485 INFO L359 BasicCegarLoop]: Counterexample is feasible
[2022-11-02 21:07:26,486 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining)
[2022-11-02 21:07:26,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 6 remaining)
[2022-11-02 21:07:26,488 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining)
[2022-11-02 21:07:26,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining)
[2022-11-02 21:07:26,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining)
[2022-11-02 21:07:26,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining)
[2022-11-02 21:07:26,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2022-11-02 21:07:26,490 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 21:07:26,498 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances
[2022-11-02 21:07:26,498 INFO L178 ceAbstractionStarter]: Computing trace abstraction results
[2022-11-02 21:07:26,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 09:07:26 BasicIcfg
[2022-11-02 21:07:26,747 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2022-11-02 21:07:26,747 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2022-11-02 21:07:26,748 INFO L271 PluginConnector]: Initializing Witness Printer...
[2022-11-02 21:07:26,748 INFO L275 PluginConnector]: Witness Printer initialized
[2022-11-02 21:07:26,748 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:07:03" (3/4) ...
[2022-11-02 21:07:26,750 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample
[2022-11-02 21:07:26,863 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18c6a1a-a932-47bd-9320-90473ee53b97/bin/uautomizer-Dbtcem3rbc/witness.graphml
[2022-11-02 21:07:26,863 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2022-11-02 21:07:26,864 INFO L158 Benchmark]: Toolchain (without parser) took 25101.41ms. Allocated memory was 94.4MB in the beginning and 375.4MB in the end (delta: 281.0MB). Free memory was 57.7MB in the beginning and 199.1MB in the end (delta: -141.4MB). Peak memory consumption was 140.5MB. Max. memory is 16.1GB.
[2022-11-02 21:07:26,864 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 94.4MB. Free memory was 51.9MB in the beginning and 51.8MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB.
[2022-11-02 21:07:26,865 INFO L158 Benchmark]: CACSL2BoogieTranslator took 772.95ms. Allocated memory was 94.4MB in the beginning and 125.8MB in the end (delta: 31.5MB). Free memory was 57.4MB in the beginning and 80.0MB in the end (delta: -22.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2022-11-02 21:07:26,865 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.12ms. Allocated memory is still 125.8MB. Free memory was 80.0MB in the beginning and 77.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2022-11-02 21:07:26,865 INFO L158 Benchmark]: Boogie Preprocessor took 45.95ms. Allocated memory is still 125.8MB. Free memory was 77.4MB in the beginning and 75.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2022-11-02 21:07:26,866 INFO L158 Benchmark]: RCFGBuilder took 626.97ms. Allocated memory is still 125.8MB. Free memory was 75.3MB in the beginning and 58.1MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
[2022-11-02 21:07:26,866 INFO L158 Benchmark]: TraceAbstraction took 23463.51ms. Allocated memory was 125.8MB in the beginning and 375.4MB in the end (delta: 249.6MB). Free memory was 57.5MB in the beginning and 237.9MB in the end (delta: -180.4MB). Peak memory consumption was 254.2MB. Max. memory is 16.1GB.
[2022-11-02 21:07:26,866 INFO L158 Benchmark]: Witness Printer took 115.90ms. Allocated memory is still 375.4MB. Free memory was 237.9MB in the beginning and 199.1MB in the end (delta: 38.8MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB.
[2022-11-02 21:07:26,868 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.33ms. Allocated memory is still 94.4MB. Free memory was 51.9MB in the beginning and 51.8MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 772.95ms. Allocated memory was 94.4MB in the beginning and 125.8MB in the end (delta: 31.5MB). Free memory was 57.4MB in the beginning and 80.0MB in the end (delta: -22.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 67.12ms. Allocated memory is still 125.8MB. Free memory was 80.0MB in the beginning and 77.4MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 45.95ms. Allocated memory is still 125.8MB. Free memory was 77.4MB in the beginning and 75.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 626.97ms. Allocated memory is still 125.8MB. Free memory was 75.3MB in the beginning and 58.1MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
* TraceAbstraction took 23463.51ms. Allocated memory was 125.8MB in the beginning and 375.4MB in the end (delta: 249.6MB). Free memory was 57.5MB in the beginning and 237.9MB in the end (delta: -180.4MB). Peak memory consumption was 254.2MB. Max. memory is 16.1GB.
* Witness Printer took 115.90ms. Allocated memory is still 375.4MB. Free memory was 237.9MB in the beginning and 199.1MB in the end (delta: 38.8MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- CounterExampleResult [Line: 941]: a call to reach_error is reachable
a call to reach_error is reachable
We found a FailurePath:
[L935] 0 static int top=0;
VAL [top=0]
[L936] 0 static unsigned int arr[(5)];
VAL [arr={5:0}, top=0]
[L937] 0 pthread_mutex_t m;
VAL [arr={5:0}, m={6:0}, top=0]
[L938] 0 _Bool flag=(0);
VAL [arr={5:0}, flag=0, m={6:0}, top=0]
[L1021] 0 pthread_t id1, id2;
VAL [arr={5:0}, flag=0, id1={9:0}, id2={7:0}, m={6:0}, top=0]
[L1023] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0))
VAL [arr={5:0}, flag=0, id1={9:0}, id2={7:0}, m={6:0}, pthread_create(&id1, ((void *)0), t1, ((void *)0))=13, top=0]
[L990] 1 int i;
VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=0, m={6:0}, top=0]
[L991] 1 unsigned int tmp;
VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=0, m={6:0}, top=0]
[L992] 1 i=0
VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=0, i=0, m={6:0}, top=0]
[L992] COND TRUE 1 i<(5)
VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=0, i=0, m={6:0}, top=0]
[L995] 1 tmp = __VERIFIER_nondet_uint()
VAL [__VERIFIER_nondet_uint()=4294967300, arg={0:0}, arg={0:0}, arr={5:0}, flag=0, i=0, m={6:0}, tmp=4, top=0]
[L996] CALL 1 assume_abort_if_not(tmp < (5))
[L1024] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0))
VAL [arr={5:0}, flag=0, id1={9:0}, id2={7:0}, m={6:0}, pthread_create(&id2, ((void *)0), t2, ((void *)0))=14, top=0]
[L23] COND FALSE 1 !(!cond)
VAL [\old(cond)=1, arr={5:0}, cond=1, flag=0, m={6:0}, top=0]
[L996] RET 1 assume_abort_if_not(tmp < (5))
[L997] CALL, EXPR 1 push(arr,tmp)
[L962] COND FALSE 1 !(top==(5))
VAL [\old(x)=4, arr={5:0}, flag=0, m={6:0}, stack={5:0}, stack={5:0}, top=0, x=4]
[L969] CALL, EXPR 1 get_top()
[L954] 1 return top;
VAL [\result=0, arr={5:0}, flag=0, m={6:0}, top=0]
[L969] RET, EXPR 1 get_top()
[L969] 1 stack[get_top()] = x
VAL [\old(x)=4, arr={5:0}, flag=0, get_top()=0, m={6:0}, stack={5:0}, stack={5:0}, top=0, x=4]
[L970] CALL 1 inc_top()
[L946] 1 top++
VAL [arr={5:0}, flag=0, m={6:0}, top=1]
[L1006] 2 int i;
VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=0, m={6:0}, top=1]
[L1007] 2 i=0
VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=0, i=0, m={6:0}, top=1]
[L1007] COND TRUE 2 i<(5)
VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=0, i=0, m={6:0}, top=1]
[L970] RET 1 inc_top()
[L972] 1 return 0;
VAL [\old(x)=4, \result=0, arr={5:0}, flag=0, m={6:0}, stack={5:0}, stack={5:0}, top=1, x=4]
[L997] RET, EXPR 1 push(arr,tmp)
[L997] COND FALSE 1 !(push(arr,tmp)==(-1))
VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=0, i=0, m={6:0}, push(arr,tmp)=0, tmp=4, top=1]
[L999] 1 flag=(1)
VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=0, m={6:0}, tmp=4, top=1]
[L1010] COND TRUE 2 \read(flag)
VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=0, m={6:0}, top=1]
[L1012] CALL, EXPR 2 pop(arr)
[L976] CALL, EXPR 2 get_top()
[L954] 2 return top;
VAL [\result=1, \result=0, arr={5:0}, flag=1, m={6:0}, top=1]
[L976] RET, EXPR 2 get_top()
[L976] COND FALSE 2 !(get_top()==0)
VAL [arr={5:0}, flag=1, get_top()=1, m={6:0}, stack={5:0}, stack={5:0}, top=1]
[L983] CALL 2 dec_top()
[L950] 2 top--
VAL [arr={5:0}, flag=1, m={6:0}, top=0]
[L983] RET 2 dec_top()
[L984] CALL, EXPR 2 get_top()
[L954] 2 return top;
VAL [\result=0, \result=0, arr={5:0}, flag=1, m={6:0}, top=0]
[L984] RET, EXPR 2 get_top()
[L984] EXPR 2 stack[get_top()]
VAL [arr={5:0}, flag=1, get_top()=0, m={6:0}, stack={5:0}, stack={5:0}, stack[get_top()]=4, top=0]
[L984] 2 return stack[get_top()];
VAL [\result=4, arr={5:0}, flag=1, get_top()=0, m={6:0}, stack={5:0}, stack={5:0}, stack[get_top()]=4, top=0]
[L1012] RET, EXPR 2 pop(arr)
[L1012] COND FALSE 2 !(!(pop(arr)!=(-2)))
VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=0, m={6:0}, pop(arr)=4, top=0]
[L1007] 2 i++
VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=1, m={6:0}, top=0]
[L1007] COND TRUE 2 i<(5)
VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=1, m={6:0}, top=0]
[L1010] COND TRUE 2 \read(flag)
VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=1, m={6:0}, top=0]
[L1012] CALL, EXPR 2 pop(arr)
[L976] CALL, EXPR 2 get_top()
[L954] 2 return top;
VAL [\result=0, \result=0, arr={5:0}, flag=1, m={6:0}, top=0]
[L976] RET, EXPR 2 get_top()
[L976] COND TRUE 2 get_top()==0
VAL [arr={5:0}, flag=1, get_top()=0, m={6:0}, stack={5:0}, stack={5:0}, top=0]
[L979] 2 return (-2);
VAL [\result=-2, arr={5:0}, flag=1, m={6:0}, stack={5:0}, stack={5:0}, top=0]
[L1012] RET, EXPR 2 pop(arr)
[L1012] COND TRUE 2 !(pop(arr)!=(-2))
VAL [arg={0:0}, arg={0:0}, arr={5:0}, flag=1, i=1, m={6:0}, pop(arr)=-2, top=0]
[L1013] CALL 2 error()
[L941] 2 reach_error()
VAL [arr={5:0}, flag=1, m={6:0}, top=0]
- UnprovableResult [Line: 1024]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users)
Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users)
Reason: Not analyzed.
- UnprovableResult [Line: 1023]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users)
Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users)
Reason: Not analyzed.
- UnprovableResult [Line: 941]: Unable to prove that call to reach_error is unreachable
Unable to prove that call to reach_error is unreachable
Reason: Not analyzed.
- StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances
CFG has 5 procedures, 294 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 23.0s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 14.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1346 SdHoareTripleChecker+Valid, 4.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1346 mSDsluCounter, 3219 SdHoareTripleChecker+Invalid, 3.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3593 mSDsCounter, 77 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5169 IncrementalHoareTripleChecker+Invalid, 5246 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 77 mSolverCounterUnsat, 237 mSDtfsCounter, 5169 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 387 GetRequests, 232 SyntacticMatches, 2 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1934 ImplicationChecksByTransitivity, 7.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1475occurred in iteration=8, InterpolantAutomatonStates: 123, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 1092 NumberOfCodeBlocks, 1092 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1035 ConstructedInterpolants, 0 QuantifiedInterpolants, 6775 SizeOfPredicates, 2 NumberOfNonLiveVariables, 256 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 10 InterpolantComputations, 7 PerfectInterpolantSequences, 12/66 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
[2022-11-02 21:07:26,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f18c6a1a-a932-47bd-9320-90473ee53b97/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Writing output log to file Ultimate.log
Writing human readable error path to file UltimateCounterExample.errorpath
Result:
FALSE