./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-theta/unwind2-nondet.i --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 6497de01
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b367a68b-172b-41fe-88f4-74d625eb5c98/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b367a68b-172b-41fe-88f4-74d625eb5c98/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b367a68b-172b-41fe-88f4-74d625eb5c98/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b367a68b-172b-41fe-88f4-74d625eb5c98/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-theta/unwind2-nondet.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b367a68b-172b-41fe-88f4-74d625eb5c98/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b367a68b-172b-41fe-88f4-74d625eb5c98/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 797a9e1bf9dc9387a2e0877719131f75c1f5b0797aa4bcc7c94038568bc56c2d
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-6497de0
[2024-11-24 01:16:16,885 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-24 01:16:16,978 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b367a68b-172b-41fe-88f4-74d625eb5c98/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-11-24 01:16:16,985 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-24 01:16:16,985 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-24 01:16:17,008 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-24 01:16:17,009 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-24 01:16:17,009 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-24 01:16:17,010 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-24 01:16:17,010 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-24 01:16:17,010 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-24 01:16:17,010 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-24 01:16:17,010 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-24 01:16:17,011 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-24 01:16:17,011 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-24 01:16:17,011 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-24 01:16:17,011 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-11-24 01:16:17,011 INFO L153 SettingsManager]: * sizeof long=4
[2024-11-24 01:16:17,011 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-11-24 01:16:17,011 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-11-24 01:16:17,012 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-24 01:16:17,012 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-11-24 01:16:17,012 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-24 01:16:17,012 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-11-24 01:16:17,012 INFO L153 SettingsManager]: * sizeof long double=12
[2024-11-24 01:16:17,012 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-11-24 01:16:17,012 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-11-24 01:16:17,013 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-24 01:16:17,013 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-11-24 01:16:17,013 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-24 01:16:17,013 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-24 01:16:17,013 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-24 01:16:17,013 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-24 01:16:17,014 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-24 01:16:17,014 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-24 01:16:17,014 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-24 01:16:17,014 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-24 01:16:17,014 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-24 01:16:17,014 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-24 01:16:17,014 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-24 01:16:17,015 INFO L153 SettingsManager]: * Compute procedure contracts=false
[2024-11-24 01:16:17,015 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-24 01:16:17,015 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-11-24 01:16:17,015 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-24 01:16:17,015 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-24 01:16:17,015 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-24 01:16:17,015 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-24 01:16:17,015 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-24 01:16:17,015 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC
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_b367a68b-172b-41fe-88f4-74d625eb5c98/bin/uautomizer-verify-LYvppIcaGC
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 797a9e1bf9dc9387a2e0877719131f75c1f5b0797aa4bcc7c94038568bc56c2d
[2024-11-24 01:16:17,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-24 01:16:17,308 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-24 01:16:17,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-24 01:16:17,314 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-24 01:16:17,314 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-24 01:16:17,315 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b367a68b-172b-41fe-88f4-74d625eb5c98/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/pthread-theta/unwind2-nondet.i
[2024-11-24 01:16:20,377 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b367a68b-172b-41fe-88f4-74d625eb5c98/bin/uautomizer-verify-LYvppIcaGC/data/7b3ad9e3e/9792177a608449e6b1a473e794f2b96c/FLAGe7eeebaaa
[2024-11-24 01:16:20,818 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-24 01:16:20,819 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b367a68b-172b-41fe-88f4-74d625eb5c98/sv-benchmarks/c/pthread-theta/unwind2-nondet.i
[2024-11-24 01:16:20,842 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b367a68b-172b-41fe-88f4-74d625eb5c98/bin/uautomizer-verify-LYvppIcaGC/data/7b3ad9e3e/9792177a608449e6b1a473e794f2b96c/FLAGe7eeebaaa
[2024-11-24 01:16:20,864 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b367a68b-172b-41fe-88f4-74d625eb5c98/bin/uautomizer-verify-LYvppIcaGC/data/7b3ad9e3e/9792177a608449e6b1a473e794f2b96c
[2024-11-24 01:16:20,867 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-24 01:16:20,869 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-24 01:16:20,871 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-24 01:16:20,871 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-24 01:16:20,876 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-24 01:16:20,878 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:16:20" (1/1) ...
[2024-11-24 01:16:20,879 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a6314fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:20, skipping insertion in model container
[2024-11-24 01:16:20,879 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:16:20" (1/1) ...
[2024-11-24 01:16:20,923 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-24 01:16:21,369 WARN L250 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_b367a68b-172b-41fe-88f4-74d625eb5c98/sv-benchmarks/c/pthread-theta/unwind2-nondet.i[33026,33039]
[2024-11-24 01:16:21,395 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-24 01:16:21,407 INFO L200 MainTranslator]: Completed pre-run
[2024-11-24 01:16:21,471 WARN L250 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_b367a68b-172b-41fe-88f4-74d625eb5c98/sv-benchmarks/c/pthread-theta/unwind2-nondet.i[33026,33039]
[2024-11-24 01:16:21,484 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-24 01:16:21,537 INFO L204 MainTranslator]: Completed translation
[2024-11-24 01:16:21,538 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:21 WrapperNode
[2024-11-24 01:16:21,538 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-24 01:16:21,539 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-24 01:16:21,539 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-24 01:16:21,540 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-24 01:16:21,551 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:21" (1/1) ...
[2024-11-24 01:16:21,562 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:21" (1/1) ...
[2024-11-24 01:16:21,583 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 82
[2024-11-24 01:16:21,583 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-24 01:16:21,584 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-24 01:16:21,584 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-24 01:16:21,584 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-24 01:16:21,594 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:21" (1/1) ...
[2024-11-24 01:16:21,594 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:21" (1/1) ...
[2024-11-24 01:16:21,596 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:21" (1/1) ...
[2024-11-24 01:16:21,607 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2024-11-24 01:16:21,607 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:21" (1/1) ...
[2024-11-24 01:16:21,608 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:21" (1/1) ...
[2024-11-24 01:16:21,612 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:21" (1/1) ...
[2024-11-24 01:16:21,613 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:21" (1/1) ...
[2024-11-24 01:16:21,616 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:21" (1/1) ...
[2024-11-24 01:16:21,618 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:21" (1/1) ...
[2024-11-24 01:16:21,619 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:21" (1/1) ...
[2024-11-24 01:16:21,621 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-24 01:16:21,622 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-24 01:16:21,622 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-24 01:16:21,622 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-24 01:16:21,627 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:21" (1/1) ...
[2024-11-24 01:16:21,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-24 01:16:21,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b367a68b-172b-41fe-88f4-74d625eb5c98/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 01:16:21,666 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b367a68b-172b-41fe-88f4-74d625eb5c98/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-24 01:16:21,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b367a68b-172b-41fe-88f4-74d625eb5c98/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-24 01:16:21,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-24 01:16:21,698 INFO L130 BoogieDeclarations]: Found specification of procedure f1
[2024-11-24 01:16:21,699 INFO L138 BoogieDeclarations]: Found implementation of procedure f1
[2024-11-24 01:16:21,699 INFO L130 BoogieDeclarations]: Found specification of procedure f2
[2024-11-24 01:16:21,699 INFO L138 BoogieDeclarations]: Found implementation of procedure f2
[2024-11-24 01:16:21,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-24 01:16:21,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-24 01:16:21,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-24 01:16:21,700 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement.
[2024-11-24 01:16:21,837 INFO L234 CfgBuilder]: Building ICFG
[2024-11-24 01:16:21,839 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-24 01:16:22,010 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program.
[2024-11-24 01:16:22,011 INFO L283 CfgBuilder]: Performing block encoding
[2024-11-24 01:16:22,121 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-24 01:16:22,121 INFO L312 CfgBuilder]: Removed 2 assume(true) statements.
[2024-11-24 01:16:22,122 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:16:22 BoogieIcfgContainer
[2024-11-24 01:16:22,122 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-24 01:16:22,124 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-24 01:16:22,124 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-24 01:16:22,132 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-24 01:16:22,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:16:20" (1/3) ...
[2024-11-24 01:16:22,133 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1291788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:16:22, skipping insertion in model container
[2024-11-24 01:16:22,134 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:16:21" (2/3) ...
[2024-11-24 01:16:22,134 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1291788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:16:22, skipping insertion in model container
[2024-11-24 01:16:22,134 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:16:22" (3/3) ...
[2024-11-24 01:16:22,136 INFO L128 eAbstractionObserver]: Analyzing ICFG unwind2-nondet.i
[2024-11-24 01:16:22,157 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-24 01:16:22,159 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind2-nondet.i that has 3 procedures, 27 locations, 1 initial locations, 2 loop locations, and 2 error locations.
[2024-11-24 01:16:22,159 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2024-11-24 01:16:22,235 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions.
[2024-11-24 01:16:22,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 30 transitions, 74 flow
[2024-11-24 01:16:22,323 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events.
[2024-11-24 01:16:22,329 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2024-11-24 01:16:22,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 28 events. 4/28 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 38 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place.
[2024-11-24 01:16:22,335 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 30 transitions, 74 flow
[2024-11-24 01:16:22,338 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 61 flow
[2024-11-24 01:16:22,348 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-24 01:16:22,359 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7c07ad72, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-24 01:16:22,359 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations.
[2024-11-24 01:16:22,381 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2024-11-24 01:16:22,384 INFO L124 PetriNetUnfolderBase]: 3/17 cut-off events.
[2024-11-24 01:16:22,384 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES.
[2024-11-24 01:16:22,384 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 01:16:22,387 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:16:22,389 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2024-11-24 01:16:22,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:16:22,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1153795071, now seen corresponding path program 1 times
[2024-11-24 01:16:22,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:16:22,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347468844]
[2024-11-24 01:16:22,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:16:22,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:16:22,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:16:22,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 01:16:22,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:16:22,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347468844]
[2024-11-24 01:16:22,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347468844] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 01:16:22,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 01:16:22,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2024-11-24 01:16:22,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080410007]
[2024-11-24 01:16:22,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 01:16:22,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2024-11-24 01:16:22,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:16:23,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2024-11-24 01:16:23,003 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2024-11-24 01:16:23,023 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30
[2024-11-24 01:16:23,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 61 flow. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 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)
[2024-11-24 01:16:23,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 01:16:23,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30
[2024-11-24 01:16:23,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 01:16:23,633 INFO L124 PetriNetUnfolderBase]: 381/717 cut-off events.
[2024-11-24 01:16:23,634 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES.
[2024-11-24 01:16:23,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1417 conditions, 717 events. 381/717 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3571 event pairs, 32 based on Foata normal form. 70/658 useless extension candidates. Maximal degree in co-relation 1304. Up to 185 conditions per place.
[2024-11-24 01:16:23,641 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 75 selfloop transitions, 18 changer transitions 4/101 dead transitions.
[2024-11-24 01:16:23,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 101 transitions, 429 flow
[2024-11-24 01:16:23,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2024-11-24 01:16:23,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states.
[2024-11-24 01:16:23,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions.
[2024-11-24 01:16:23,655 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333
[2024-11-24 01:16:23,657 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 61 flow. Second operand 11 states and 176 transitions.
[2024-11-24 01:16:23,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 101 transitions, 429 flow
[2024-11-24 01:16:23,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 101 transitions, 413 flow, removed 0 selfloop flow, removed 3 redundant places.
[2024-11-24 01:16:23,668 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 167 flow
[2024-11-24 01:16:23,671 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=167, PETRI_PLACES=42, PETRI_TRANSITIONS=39}
[2024-11-24 01:16:23,677 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 13 predicate places.
[2024-11-24 01:16:23,677 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 167 flow
[2024-11-24 01:16:23,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 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)
[2024-11-24 01:16:23,678 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 01:16:23,678 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:16:23,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-24 01:16:23,679 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2024-11-24 01:16:23,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:16:23,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1407939420, now seen corresponding path program 1 times
[2024-11-24 01:16:23,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:16:23,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924760513]
[2024-11-24 01:16:23,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:16:23,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:16:23,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:16:23,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 01:16:23,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:16:23,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924760513]
[2024-11-24 01:16:23,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924760513] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 01:16:23,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436690629]
[2024-11-24 01:16:23,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:16:23,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:16:23,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b367a68b-172b-41fe-88f4-74d625eb5c98/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 01:16:23,856 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b367a68b-172b-41fe-88f4-74d625eb5c98/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 01:16:23,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b367a68b-172b-41fe-88f4-74d625eb5c98/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-24 01:16:23,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:16:23,932 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-11-24 01:16:23,936 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 01:16:24,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 01:16:24,012 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-24 01:16:24,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436690629] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 01:16:24,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-24 01:16:24,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8
[2024-11-24 01:16:24,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870032060]
[2024-11-24 01:16:24,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 01:16:24,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-24 01:16:24,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:16:24,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-24 01:16:24,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2024-11-24 01:16:24,024 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30
[2024-11-24 01:16:24,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 167 flow. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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)
[2024-11-24 01:16:24,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 01:16:24,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30
[2024-11-24 01:16:24,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 01:16:24,366 INFO L124 PetriNetUnfolderBase]: 345/702 cut-off events.
[2024-11-24 01:16:24,368 INFO L125 PetriNetUnfolderBase]: For 318/318 co-relation queries the response was YES.
[2024-11-24 01:16:24,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1811 conditions, 702 events. 345/702 cut-off events. For 318/318 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3711 event pairs, 68 based on Foata normal form. 22/623 useless extension candidates. Maximal degree in co-relation 1636. Up to 167 conditions per place.
[2024-11-24 01:16:24,378 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 72 selfloop transitions, 14 changer transitions 4/97 dead transitions.
[2024-11-24 01:16:24,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 97 transitions, 502 flow
[2024-11-24 01:16:24,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2024-11-24 01:16:24,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states.
[2024-11-24 01:16:24,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions.
[2024-11-24 01:16:24,382 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.562962962962963
[2024-11-24 01:16:24,382 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 167 flow. Second operand 9 states and 152 transitions.
[2024-11-24 01:16:24,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 97 transitions, 502 flow
[2024-11-24 01:16:24,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 97 transitions, 501 flow, removed 0 selfloop flow, removed 1 redundant places.
[2024-11-24 01:16:24,393 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 239 flow
[2024-11-24 01:16:24,394 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=239, PETRI_PLACES=51, PETRI_TRANSITIONS=44}
[2024-11-24 01:16:24,395 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 22 predicate places.
[2024-11-24 01:16:24,395 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 239 flow
[2024-11-24 01:16:24,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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)
[2024-11-24 01:16:24,396 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 01:16:24,396 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:16:24,405 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b367a68b-172b-41fe-88f4-74d625eb5c98/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-24 01:16:24,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b367a68b-172b-41fe-88f4-74d625eb5c98/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:16:24,601 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2024-11-24 01:16:24,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:16:24,602 INFO L85 PathProgramCache]: Analyzing trace with hash 142621241, now seen corresponding path program 1 times
[2024-11-24 01:16:24,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:16:24,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721493979]
[2024-11-24 01:16:24,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:16:24,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:16:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:16:24,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 01:16:24,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:16:24,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721493979]
[2024-11-24 01:16:24,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721493979] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 01:16:24,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 01:16:24,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-24 01:16:24,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456520740]
[2024-11-24 01:16:24,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 01:16:24,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-24 01:16:24,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:16:24,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-24 01:16:24,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2024-11-24 01:16:24,695 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30
[2024-11-24 01:16:24,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 239 flow. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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)
[2024-11-24 01:16:24,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 01:16:24,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30
[2024-11-24 01:16:24,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 01:16:24,962 INFO L124 PetriNetUnfolderBase]: 396/836 cut-off events.
[2024-11-24 01:16:24,962 INFO L125 PetriNetUnfolderBase]: For 946/948 co-relation queries the response was YES.
[2024-11-24 01:16:24,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2275 conditions, 836 events. 396/836 cut-off events. For 946/948 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4700 event pairs, 87 based on Foata normal form. 2/753 useless extension candidates. Maximal degree in co-relation 2090. Up to 290 conditions per place.
[2024-11-24 01:16:24,968 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 64 selfloop transitions, 15 changer transitions 1/88 dead transitions.
[2024-11-24 01:16:24,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 88 transitions, 640 flow
[2024-11-24 01:16:24,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2024-11-24 01:16:24,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states.
[2024-11-24 01:16:24,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 112 transitions.
[2024-11-24 01:16:24,972 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333
[2024-11-24 01:16:24,972 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 239 flow. Second operand 7 states and 112 transitions.
[2024-11-24 01:16:24,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 88 transitions, 640 flow
[2024-11-24 01:16:24,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 88 transitions, 628 flow, removed 0 selfloop flow, removed 2 redundant places.
[2024-11-24 01:16:24,985 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 314 flow
[2024-11-24 01:16:24,985 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=314, PETRI_PLACES=58, PETRI_TRANSITIONS=49}
[2024-11-24 01:16:24,986 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places.
[2024-11-24 01:16:24,986 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 314 flow
[2024-11-24 01:16:24,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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)
[2024-11-24 01:16:24,986 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 01:16:24,986 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:16:24,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-11-24 01:16:24,987 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2024-11-24 01:16:24,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:16:24,987 INFO L85 PathProgramCache]: Analyzing trace with hash 126260598, now seen corresponding path program 1 times
[2024-11-24 01:16:24,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:16:24,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829482508]
[2024-11-24 01:16:24,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:16:24,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:16:24,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:16:25,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 01:16:25,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:16:25,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829482508]
[2024-11-24 01:16:25,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829482508] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-24 01:16:25,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771401644]
[2024-11-24 01:16:25,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:16:25,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:16:25,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b367a68b-172b-41fe-88f4-74d625eb5c98/bin/uautomizer-verify-LYvppIcaGC/z3
[2024-11-24 01:16:25,176 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b367a68b-172b-41fe-88f4-74d625eb5c98/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-24 01:16:25,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b367a68b-172b-41fe-88f4-74d625eb5c98/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-24 01:16:25,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:16:25,239 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-11-24 01:16:25,240 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-11-24 01:16:25,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 01:16:25,420 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-11-24 01:16:25,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 01:16:25,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771401644] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-24 01:16:25,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-24 01:16:25,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14
[2024-11-24 01:16:25,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977673499]
[2024-11-24 01:16:25,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-24 01:16:25,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2024-11-24 01:16:25,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:16:25,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2024-11-24 01:16:25,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210
[2024-11-24 01:16:25,672 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30
[2024-11-24 01:16:25,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 314 flow. Second operand has 15 states, 15 states have (on average 7.533333333333333) internal successors, (113), 15 states have internal predecessors, (113), 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)
[2024-11-24 01:16:25,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 01:16:25,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30
[2024-11-24 01:16:25,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 01:16:26,442 INFO L124 PetriNetUnfolderBase]: 774/1416 cut-off events.
[2024-11-24 01:16:26,442 INFO L125 PetriNetUnfolderBase]: For 2064/2080 co-relation queries the response was YES.
[2024-11-24 01:16:26,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4643 conditions, 1416 events. 774/1416 cut-off events. For 2064/2080 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 7879 event pairs, 99 based on Foata normal form. 2/1281 useless extension candidates. Maximal degree in co-relation 4326. Up to 357 conditions per place.
[2024-11-24 01:16:26,457 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 99 selfloop transitions, 22 changer transitions 37/164 dead transitions.
[2024-11-24 01:16:26,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 164 transitions, 1300 flow
[2024-11-24 01:16:26,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2024-11-24 01:16:26,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states.
[2024-11-24 01:16:26,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 188 transitions.
[2024-11-24 01:16:26,459 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48205128205128206
[2024-11-24 01:16:26,459 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 314 flow. Second operand 13 states and 188 transitions.
[2024-11-24 01:16:26,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 164 transitions, 1300 flow
[2024-11-24 01:16:26,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 164 transitions, 1279 flow, removed 2 selfloop flow, removed 3 redundant places.
[2024-11-24 01:16:26,483 INFO L231 Difference]: Finished difference. Result has 73 places, 55 transitions, 422 flow
[2024-11-24 01:16:26,484 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=422, PETRI_PLACES=73, PETRI_TRANSITIONS=55}
[2024-11-24 01:16:26,484 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 44 predicate places.
[2024-11-24 01:16:26,485 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 55 transitions, 422 flow
[2024-11-24 01:16:26,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.533333333333333) internal successors, (113), 15 states have internal predecessors, (113), 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)
[2024-11-24 01:16:26,485 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 01:16:26,485 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:16:26,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b367a68b-172b-41fe-88f4-74d625eb5c98/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-24 01:16:26,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b367a68b-172b-41fe-88f4-74d625eb5c98/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-24 01:16:26,689 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2024-11-24 01:16:26,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:16:26,690 INFO L85 PathProgramCache]: Analyzing trace with hash -921986964, now seen corresponding path program 1 times
[2024-11-24 01:16:26,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:16:26,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361536445]
[2024-11-24 01:16:26,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:16:26,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:16:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-24 01:16:26,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-24 01:16:26,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-24 01:16:26,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361536445]
[2024-11-24 01:16:26,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361536445] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-24 01:16:26,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-24 01:16:26,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-11-24 01:16:26,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119388020]
[2024-11-24 01:16:26,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-24 01:16:26,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-24 01:16:26,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-24 01:16:26,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-24 01:16:26,793 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2024-11-24 01:16:26,802 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30
[2024-11-24 01:16:26,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 55 transitions, 422 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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)
[2024-11-24 01:16:26,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-24 01:16:26,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30
[2024-11-24 01:16:26,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-24 01:16:27,131 INFO L124 PetriNetUnfolderBase]: 552/1173 cut-off events.
[2024-11-24 01:16:27,132 INFO L125 PetriNetUnfolderBase]: For 2539/2541 co-relation queries the response was YES.
[2024-11-24 01:16:27,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4530 conditions, 1173 events. 552/1173 cut-off events. For 2539/2541 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 7170 event pairs, 101 based on Foata normal form. 18/1142 useless extension candidates. Maximal degree in co-relation 4357. Up to 558 conditions per place.
[2024-11-24 01:16:27,145 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 58 selfloop transitions, 15 changer transitions 0/82 dead transitions.
[2024-11-24 01:16:27,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 82 transitions, 750 flow
[2024-11-24 01:16:27,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-11-24 01:16:27,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2024-11-24 01:16:27,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 92 transitions.
[2024-11-24 01:16:27,147 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111
[2024-11-24 01:16:27,147 INFO L175 Difference]: Start difference. First operand has 73 places, 55 transitions, 422 flow. Second operand 6 states and 92 transitions.
[2024-11-24 01:16:27,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 82 transitions, 750 flow
[2024-11-24 01:16:27,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 82 transitions, 693 flow, removed 11 selfloop flow, removed 7 redundant places.
[2024-11-24 01:16:27,175 INFO L231 Difference]: Finished difference. Result has 70 places, 56 transitions, 419 flow
[2024-11-24 01:16:27,175 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=419, PETRI_PLACES=70, PETRI_TRANSITIONS=56}
[2024-11-24 01:16:27,176 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 41 predicate places.
[2024-11-24 01:16:27,176 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 56 transitions, 419 flow
[2024-11-24 01:16:27,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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)
[2024-11-24 01:16:27,177 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-11-24 01:16:27,177 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-24 01:16:27,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2024-11-24 01:16:27,177 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] ===
[2024-11-24 01:16:27,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-24 01:16:27,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1504686646, now seen corresponding path program 1 times
[2024-11-24 01:16:27,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-24 01:16:27,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607156984]
[2024-11-24 01:16:27,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-24 01:16:27,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-24 01:16:27,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-24 01:16:27,191 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2024-11-24 01:16:27,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2024-11-24 01:16:27,216 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2024-11-24 01:16:27,216 INFO L340 BasicCegarLoop]: Counterexample is feasible
[2024-11-24 01:16:27,217 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining)
[2024-11-24 01:16:27,219 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 6 remaining)
[2024-11-24 01:16:27,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining)
[2024-11-24 01:16:27,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining)
[2024-11-24 01:16:27,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining)
[2024-11-24 01:16:27,220 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining)
[2024-11-24 01:16:27,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2024-11-24 01:16:27,220 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1]
[2024-11-24 01:16:27,248 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances
[2024-11-24 01:16:27,248 INFO L170 ceAbstractionStarter]: Computing trace abstraction results
[2024-11-24 01:16:27,254 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 01:16:27 BasicIcfg
[2024-11-24 01:16:27,254 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2024-11-24 01:16:27,255 INFO L112 PluginConnector]: ------------------------Witness Printer----------------------------
[2024-11-24 01:16:27,255 INFO L270 PluginConnector]: Initializing Witness Printer...
[2024-11-24 01:16:27,255 INFO L274 PluginConnector]: Witness Printer initialized
[2024-11-24 01:16:27,256 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:16:22" (3/4) ...
[2024-11-24 01:16:27,256 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample
[2024-11-24 01:16:27,308 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 7.
[2024-11-24 01:16:27,358 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b367a68b-172b-41fe-88f4-74d625eb5c98/bin/uautomizer-verify-LYvppIcaGC/witness.graphml
[2024-11-24 01:16:27,358 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b367a68b-172b-41fe-88f4-74d625eb5c98/bin/uautomizer-verify-LYvppIcaGC/witness.yml
[2024-11-24 01:16:27,359 INFO L131 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2024-11-24 01:16:27,360 INFO L158 Benchmark]: Toolchain (without parser) took 6490.88ms. Allocated memory was 142.6MB in the beginning and 385.9MB in the end (delta: 243.3MB). Free memory was 118.2MB in the beginning and 204.8MB in the end (delta: -86.6MB). Peak memory consumption was 157.2MB. Max. memory is 16.1GB.
[2024-11-24 01:16:27,360 INFO L158 Benchmark]: CDTParser took 0.62ms. Allocated memory is still 142.6MB. Free memory is still 80.2MB. There was no memory consumed. Max. memory is 16.1GB.
[2024-11-24 01:16:27,360 INFO L158 Benchmark]: CACSL2BoogieTranslator took 668.11ms. Allocated memory is still 142.6MB. Free memory was 117.9MB in the beginning and 98.0MB in the end (delta: 20.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
[2024-11-24 01:16:27,361 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.17ms. Allocated memory is still 142.6MB. Free memory was 98.0MB in the beginning and 96.2MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB.
[2024-11-24 01:16:27,361 INFO L158 Benchmark]: Boogie Preprocessor took 37.45ms. Allocated memory is still 142.6MB. Free memory was 96.2MB in the beginning and 94.3MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-11-24 01:16:27,361 INFO L158 Benchmark]: RCFGBuilder took 499.70ms. Allocated memory is still 142.6MB. Free memory was 94.3MB in the beginning and 74.1MB in the end (delta: 20.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
[2024-11-24 01:16:27,362 INFO L158 Benchmark]: TraceAbstraction took 5129.91ms. Allocated memory was 142.6MB in the beginning and 385.9MB in the end (delta: 243.3MB). Free memory was 73.3MB in the beginning and 210.6MB in the end (delta: -137.3MB). Peak memory consumption was 106.9MB. Max. memory is 16.1GB.
[2024-11-24 01:16:27,362 INFO L158 Benchmark]: Witness Printer took 104.11ms. Allocated memory is still 385.9MB. Free memory was 210.6MB in the beginning and 204.8MB in the end (delta: 5.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2024-11-24 01:16:27,364 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.62ms. Allocated memory is still 142.6MB. Free memory is still 80.2MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 668.11ms. Allocated memory is still 142.6MB. Free memory was 117.9MB in the beginning and 98.0MB in the end (delta: 20.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 44.17ms. Allocated memory is still 142.6MB. Free memory was 98.0MB in the beginning and 96.2MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB.
* Boogie Preprocessor took 37.45ms. Allocated memory is still 142.6MB. Free memory was 96.2MB in the beginning and 94.3MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* RCFGBuilder took 499.70ms. Allocated memory is still 142.6MB. Free memory was 94.3MB in the beginning and 74.1MB in the end (delta: 20.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
* TraceAbstraction took 5129.91ms. Allocated memory was 142.6MB in the beginning and 385.9MB in the end (delta: 243.3MB). Free memory was 73.3MB in the beginning and 210.6MB in the end (delta: -137.3MB). Peak memory consumption was 106.9MB. Max. memory is 16.1GB.
* Witness Printer took 104.11ms. Allocated memory is still 385.9MB. Free memory was 210.6MB in the beginning and 204.8MB in the end (delta: 5.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- CounterExampleResult [Line: 753]: a call to reach_error is reachable
a call to reach_error is reachable
We found a FailurePath:
[L754] 0 int _N;
[L755] 0 atomic_int limit;
[L775] 0 _N = __VERIFIER_nondet_int()
[L776] CALL 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1)
[L750] COND FALSE 0 !(!cond)
[L776] RET 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1)
[L777] 0 pthread_t t1, t2;
[L778] FCALL, FORK 0 pthread_create(&t1, 0, f1, 0)
VAL [_N=0, limit=0, t1=-1]
[L757] 1 int i, bound;
[L758] 1 int lim = _N;
VAL [\old(arg)={0:0}, _N=0, arg={0:0}, lim=0, limit=0]
[L779] FCALL, FORK 0 pthread_create(&t2, 0, f2, 0)
VAL [_N=0, limit=0, t1=-1, t2=0]
[L766] 2 int i, bound;
[L767] 2 int lim = _N + 1;
VAL [\old(arg)={0:0}, _N=0, arg={0:0}, lim=1, limit=0]
[L768] 2 limit = lim
VAL [\old(arg)={0:0}, _N=0, arg={0:0}, lim=1, limit=1]
[L759] 1 limit = lim
VAL [\old(arg)={0:0}, _N=0, arg={0:0}, lim=0, limit=0]
[L769] 2 bound = limit
[L770] 2 i = 0
VAL [\old(arg)={0:0}, _N=0, arg={0:0}, bound=0, i=0, lim=1, limit=0]
[L770] COND FALSE 2 !(i < bound)
[L771] CALL 2 __VERIFIER_assert(i == lim)
[L753] COND TRUE 2 !expression
VAL [\old(expression)=0, _N=0, expression=0, limit=0]
[L753] 2 reach_error()
VAL [\old(expression)=0, _N=0, expression=0, limit=0]
- UnprovableResult [Line: 778]: Unable to prove that petrification did provide enough thread instances (tool internal message)
Unable to prove that petrification did provide enough thread instances (tool internal message)
Reason: Not analyzed.
- UnprovableResult [Line: 779]: Unable to prove that petrification did provide enough thread instances (tool internal message)
Unable to prove that petrification did provide enough thread instances (tool internal message)
Reason: Not analyzed.
- UnprovableResult [Line: 753]: Unable to prove that a call to reach_error is unreachable
Unable to prove that a call to reach_error is unreachable
Reason: Not analyzed.
- StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances
CFG has 5 procedures, 47 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: 4.9s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 492 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 484 mSDsluCounter, 144 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 120 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 967 IncrementalHoareTripleChecker+Invalid, 970 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 24 mSDtfsCounter, 967 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=422occurred in iteration=4, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 73 ConstructedInterpolants, 0 QuantifiedInterpolants, 320 SizeOfPredicates, 11 NumberOfNonLiveVariables, 134 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 1/5 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, ConComCheckerStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
[2024-11-24 01:16:27,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b367a68b-172b-41fe-88f4-74d625eb5c98/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with 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