./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/mult-comm.wvr.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version d790fecc
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/mult-comm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1 --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 de93f11842753a9f5cde98724d1851736862f745073786263bfd177abe6c2376
--- Real Ultimate output ---
This is Ultimate 0.3.0-dev-d790fec
[2024-12-02 07:53:01,753 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-12-02 07:53:01,810 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-12-02 07:53:01,815 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-12-02 07:53:01,815 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-12-02 07:53:01,837 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-12-02 07:53:01,837 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-12-02 07:53:01,837 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-12-02 07:53:01,838 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-12-02 07:53:01,838 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-12-02 07:53:01,838 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-12-02 07:53:01,838 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-12-02 07:53:01,838 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-12-02 07:53:01,839 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-12-02 07:53:01,839 INFO L153 SettingsManager]: * Use SBE=true
[2024-12-02 07:53:01,839 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-12-02 07:53:01,839 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-12-02 07:53:01,839 INFO L153 SettingsManager]: * sizeof long=4
[2024-12-02 07:53:01,839 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-12-02 07:53:01,839 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-12-02 07:53:01,839 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-12-02 07:53:01,839 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-12-02 07:53:01,840 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-12-02 07:53:01,840 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-12-02 07:53:01,840 INFO L153 SettingsManager]: * sizeof long double=12
[2024-12-02 07:53:01,840 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-12-02 07:53:01,840 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR
[2024-12-02 07:53:01,840 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-12-02 07:53:01,840 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults:
[2024-12-02 07:53:01,840 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-12-02 07:53:01,840 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-12-02 07:53:01,840 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-12-02 07:53:01,841 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 07:53:01,841 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-12-02 07:53:01,841 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-12-02 07:53:01,841 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-12-02 07:53:01,841 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-12-02 07:53:01,841 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 07:53:01,841 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-12-02 07:53:01,841 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-12-02 07:53:01,841 INFO L153 SettingsManager]: * Compute procedure contracts=false
[2024-12-02 07:53:01,842 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-12-02 07:53:01,842 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-12-02 07:53:01,842 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-12-02 07:53:01,842 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-12-02 07:53:01,842 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-12-02 07:53:01,842 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-12-02 07:53:01,842 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-12-02 07:53:01,842 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_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1
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 -> de93f11842753a9f5cde98724d1851736862f745073786263bfd177abe6c2376
[2024-12-02 07:53:02,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-12-02 07:53:02,078 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-12-02 07:53:02,080 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-12-02 07:53:02,082 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-12-02 07:53:02,082 INFO L274 PluginConnector]: CDTParser initialized
[2024-12-02 07:53:02,083 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/weaver/mult-comm.wvr.c
[2024-12-02 07:53:04,905 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/data/849c2859a/8e91c68a554d4bf0ae88e96370574d8c/FLAG47e1ab6af
[2024-12-02 07:53:05,109 INFO L384 CDTParser]: Found 1 translation units.
[2024-12-02 07:53:05,110 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/sv-benchmarks/c/weaver/mult-comm.wvr.c
[2024-12-02 07:53:05,118 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/data/849c2859a/8e91c68a554d4bf0ae88e96370574d8c/FLAG47e1ab6af
[2024-12-02 07:53:05,463 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/data/849c2859a/8e91c68a554d4bf0ae88e96370574d8c
[2024-12-02 07:53:05,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-12-02 07:53:05,466 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-12-02 07:53:05,467 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-12-02 07:53:05,468 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-12-02 07:53:05,471 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-12-02 07:53:05,472 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:53:05" (1/1) ...
[2024-12-02 07:53:05,473 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ec906a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:05, skipping insertion in model container
[2024-12-02 07:53:05,473 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:53:05" (1/1) ...
[2024-12-02 07:53:05,485 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-12-02 07:53:05,642 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_196187e6-60d9-4f72-8e55-37de894ac9f8/sv-benchmarks/c/weaver/mult-comm.wvr.c[1936,1949]
[2024-12-02 07:53:05,646 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-12-02 07:53:05,655 INFO L200 MainTranslator]: Completed pre-run
[2024-12-02 07:53:05,672 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_196187e6-60d9-4f72-8e55-37de894ac9f8/sv-benchmarks/c/weaver/mult-comm.wvr.c[1936,1949]
[2024-12-02 07:53:05,673 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-12-02 07:53:05,686 INFO L204 MainTranslator]: Completed translation
[2024-12-02 07:53:05,687 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:05 WrapperNode
[2024-12-02 07:53:05,687 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-12-02 07:53:05,688 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-12-02 07:53:05,688 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-12-02 07:53:05,688 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-12-02 07:53:05,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:05" (1/1) ...
[2024-12-02 07:53:05,701 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:05" (1/1) ...
[2024-12-02 07:53:05,714 INFO L138 Inliner]: procedures = 20, calls = 9, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41
[2024-12-02 07:53:05,714 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-12-02 07:53:05,715 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-12-02 07:53:05,715 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-12-02 07:53:05,715 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-12-02 07:53:05,721 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:05" (1/1) ...
[2024-12-02 07:53:05,722 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:05" (1/1) ...
[2024-12-02 07:53:05,723 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:05" (1/1) ...
[2024-12-02 07:53:05,732 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].
[2024-12-02 07:53:05,733 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:05" (1/1) ...
[2024-12-02 07:53:05,733 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:05" (1/1) ...
[2024-12-02 07:53:05,736 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:05" (1/1) ...
[2024-12-02 07:53:05,737 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:05" (1/1) ...
[2024-12-02 07:53:05,740 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:05" (1/1) ...
[2024-12-02 07:53:05,740 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:05" (1/1) ...
[2024-12-02 07:53:05,741 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:05" (1/1) ...
[2024-12-02 07:53:05,742 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-12-02 07:53:05,743 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-12-02 07:53:05,743 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-12-02 07:53:05,743 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-12-02 07:53:05,744 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:05" (1/1) ...
[2024-12-02 07:53:05,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-12-02 07:53:05,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:53:05,777 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-12-02 07:53:05,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-12-02 07:53:05,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-12-02 07:53:05,805 INFO L130 BoogieDeclarations]: Found specification of procedure thread1
[2024-12-02 07:53:05,805 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1
[2024-12-02 07:53:05,805 INFO L130 BoogieDeclarations]: Found specification of procedure thread2
[2024-12-02 07:53:05,806 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2
[2024-12-02 07:53:05,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-12-02 07:53:05,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-12-02 07:53:05,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-12-02 07:53:05,807 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement.
[2024-12-02 07:53:05,895 INFO L234 CfgBuilder]: Building ICFG
[2024-12-02 07:53:05,897 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-12-02 07:53:06,035 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program.
[2024-12-02 07:53:06,035 INFO L283 CfgBuilder]: Performing block encoding
[2024-12-02 07:53:06,138 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-12-02 07:53:06,138 INFO L312 CfgBuilder]: Removed 2 assume(true) statements.
[2024-12-02 07:53:06,138 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:53:06 BoogieIcfgContainer
[2024-12-02 07:53:06,138 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-12-02 07:53:06,141 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-12-02 07:53:06,141 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-12-02 07:53:06,146 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-12-02 07:53:06,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:53:05" (1/3) ...
[2024-12-02 07:53:06,147 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3518446f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:53:06, skipping insertion in model container
[2024-12-02 07:53:06,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:05" (2/3) ...
[2024-12-02 07:53:06,148 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3518446f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:53:06, skipping insertion in model container
[2024-12-02 07:53:06,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:53:06" (3/3) ...
[2024-12-02 07:53:06,149 INFO L128 eAbstractionObserver]: Analyzing ICFG mult-comm.wvr.c
[2024-12-02 07:53:06,166 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-12-02 07:53:06,167 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mult-comm.wvr.c that has 3 procedures, 17 locations, 1 initial locations, 2 loop locations, and 1 error locations.
[2024-12-02 07:53:06,167 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2024-12-02 07:53:06,213 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions.
[2024-12-02 07:53:06,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 23 places, 18 transitions, 50 flow
[2024-12-02 07:53:06,273 INFO L124 PetriNetUnfolderBase]: 2/16 cut-off events.
[2024-12-02 07:53:06,275 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2024-12-02 07:53:06,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 16 events. 2/16 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 11. Up to 2 conditions per place.
[2024-12-02 07:53:06,279 INFO L82 GeneralOperation]: Start removeDead. Operand has 23 places, 18 transitions, 50 flow
[2024-12-02 07:53:06,282 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 20 places, 15 transitions, 42 flow
[2024-12-02 07:53:06,291 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-12-02 07:53:06,302 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;@508a6131, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-12-02 07:53:06,302 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations.
[2024-12-02 07:53:06,309 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2024-12-02 07:53:06,309 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events.
[2024-12-02 07:53:06,309 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2024-12-02 07:53:06,309 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 07:53:06,310 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:53:06,310 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-12-02 07:53:06,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:53:06,315 INFO L85 PathProgramCache]: Analyzing trace with hash 272082276, now seen corresponding path program 1 times
[2024-12-02 07:53:06,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:53:06,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763033278]
[2024-12-02 07:53:06,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:53:06,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:53:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:53:06,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:06,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:53:06,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763033278]
[2024-12-02 07:53:06,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763033278] provided 1 perfect and 0 imperfect interpolant sequences
[2024-12-02 07:53:06,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-12-02 07:53:06,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-12-02 07:53:06,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711100080]
[2024-12-02 07:53:06,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-12-02 07:53:06,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-12-02 07:53:06,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:53:06,873 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-12-02 07:53:06,873 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-12-02 07:53:06,875 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18
[2024-12-02 07:53:06,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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)
[2024-12-02 07:53:06,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 07:53:06,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18
[2024-12-02 07:53:06,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 07:53:06,977 INFO L124 PetriNetUnfolderBase]: 68/123 cut-off events.
[2024-12-02 07:53:06,978 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES.
[2024-12-02 07:53:06,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 123 events. 68/123 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 325 event pairs, 22 based on Foata normal form. 1/94 useless extension candidates. Maximal degree in co-relation 220. Up to 72 conditions per place.
[2024-12-02 07:53:06,981 INFO L140 encePairwiseOnDemand]: 14/18 looper letters, 21 selfloop transitions, 3 changer transitions 1/26 dead transitions.
[2024-12-02 07:53:06,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 26 transitions, 123 flow
[2024-12-02 07:53:06,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-12-02 07:53:06,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2024-12-02 07:53:06,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 35 transitions.
[2024-12-02 07:53:06,995 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6481481481481481
[2024-12-02 07:53:06,997 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 42 flow. Second operand 3 states and 35 transitions.
[2024-12-02 07:53:06,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 26 transitions, 123 flow
[2024-12-02 07:53:07,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 26 transitions, 109 flow, removed 0 selfloop flow, removed 4 redundant places.
[2024-12-02 07:53:07,006 INFO L231 Difference]: Finished difference. Result has 19 places, 17 transitions, 53 flow
[2024-12-02 07:53:07,009 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=19, PETRI_TRANSITIONS=17}
[2024-12-02 07:53:07,013 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, -1 predicate places.
[2024-12-02 07:53:07,013 INFO L471 AbstractCegarLoop]: Abstraction has has 19 places, 17 transitions, 53 flow
[2024-12-02 07:53:07,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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)
[2024-12-02 07:53:07,013 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 07:53:07,014 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:53:07,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-12-02 07:53:07,014 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-12-02 07:53:07,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:53:07,015 INFO L85 PathProgramCache]: Analyzing trace with hash -654262045, now seen corresponding path program 1 times
[2024-12-02 07:53:07,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:53:07,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343073215]
[2024-12-02 07:53:07,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:53:07,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:53:07,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:53:07,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:07,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:53:07,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343073215]
[2024-12-02 07:53:07,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343073215] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:53:07,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749134630]
[2024-12-02 07:53:07,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:53:07,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:53:07,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:53:07,349 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:53:07,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-12-02 07:53:07,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:53:07,424 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-12-02 07:53:07,428 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:53:07,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:07,560 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:53:07,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:07,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749134630] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:53:07,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 07:53:07,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 8
[2024-12-02 07:53:07,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088048884]
[2024-12-02 07:53:07,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:53:07,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2024-12-02 07:53:07,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:53:07,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2024-12-02 07:53:07,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72
[2024-12-02 07:53:07,801 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18
[2024-12-02 07:53:07,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 17 transitions, 53 flow. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 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)
[2024-12-02 07:53:07,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 07:53:07,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18
[2024-12-02 07:53:07,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 07:53:08,032 INFO L124 PetriNetUnfolderBase]: 70/131 cut-off events.
[2024-12-02 07:53:08,032 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES.
[2024-12-02 07:53:08,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 131 events. 70/131 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 356 event pairs, 6 based on Foata normal form. 1/132 useless extension candidates. Maximal degree in co-relation 104. Up to 70 conditions per place.
[2024-12-02 07:53:08,034 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 23 selfloop transitions, 5 changer transitions 12/41 dead transitions.
[2024-12-02 07:53:08,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 41 transitions, 196 flow
[2024-12-02 07:53:08,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-12-02 07:53:08,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2024-12-02 07:53:08,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 59 transitions.
[2024-12-02 07:53:08,036 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5462962962962963
[2024-12-02 07:53:08,036 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 53 flow. Second operand 6 states and 59 transitions.
[2024-12-02 07:53:08,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 41 transitions, 196 flow
[2024-12-02 07:53:08,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 41 transitions, 191 flow, removed 0 selfloop flow, removed 1 redundant places.
[2024-12-02 07:53:08,038 INFO L231 Difference]: Finished difference. Result has 26 places, 19 transitions, 78 flow
[2024-12-02 07:53:08,038 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=78, PETRI_PLACES=26, PETRI_TRANSITIONS=19}
[2024-12-02 07:53:08,038 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 6 predicate places.
[2024-12-02 07:53:08,039 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 19 transitions, 78 flow
[2024-12-02 07:53:08,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 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)
[2024-12-02 07:53:08,039 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 07:53:08,039 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:53:08,049 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-12-02 07:53:08,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:53:08,240 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-12-02 07:53:08,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:53:08,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1331952198, now seen corresponding path program 1 times
[2024-12-02 07:53:08,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:53:08,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275014723]
[2024-12-02 07:53:08,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:53:08,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:53:08,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:53:08,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:08,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:53:08,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275014723]
[2024-12-02 07:53:08,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275014723] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:53:08,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745051004]
[2024-12-02 07:53:08,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:53:08,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:53:08,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:53:08,455 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:53:08,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-12-02 07:53:08,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:53:08,518 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-12-02 07:53:08,519 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:53:08,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:08,634 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:53:08,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:08,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745051004] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:53:08,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 07:53:08,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9
[2024-12-02 07:53:08,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925458426]
[2024-12-02 07:53:08,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:53:08,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-12-02 07:53:08,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:53:08,863 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-12-02 07:53:08,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90
[2024-12-02 07:53:08,864 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18
[2024-12-02 07:53:08,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 19 transitions, 78 flow. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 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)
[2024-12-02 07:53:08,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 07:53:08,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18
[2024-12-02 07:53:08,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 07:53:09,059 INFO L124 PetriNetUnfolderBase]: 62/116 cut-off events.
[2024-12-02 07:53:09,059 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES.
[2024-12-02 07:53:09,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334 conditions, 116 events. 62/116 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 307 event pairs, 7 based on Foata normal form. 1/117 useless extension candidates. Maximal degree in co-relation 322. Up to 67 conditions per place.
[2024-12-02 07:53:09,061 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 21 selfloop transitions, 6 changer transitions 12/40 dead transitions.
[2024-12-02 07:53:09,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 40 transitions, 226 flow
[2024-12-02 07:53:09,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2024-12-02 07:53:09,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2024-12-02 07:53:09,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 57 transitions.
[2024-12-02 07:53:09,062 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778
[2024-12-02 07:53:09,062 INFO L175 Difference]: Start difference. First operand has 26 places, 19 transitions, 78 flow. Second operand 6 states and 57 transitions.
[2024-12-02 07:53:09,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 40 transitions, 226 flow
[2024-12-02 07:53:09,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 40 transitions, 204 flow, removed 5 selfloop flow, removed 3 redundant places.
[2024-12-02 07:53:09,065 INFO L231 Difference]: Finished difference. Result has 29 places, 21 transitions, 94 flow
[2024-12-02 07:53:09,065 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=94, PETRI_PLACES=29, PETRI_TRANSITIONS=21}
[2024-12-02 07:53:09,066 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 9 predicate places.
[2024-12-02 07:53:09,066 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 21 transitions, 94 flow
[2024-12-02 07:53:09,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 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)
[2024-12-02 07:53:09,066 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 07:53:09,066 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:53:09,077 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-12-02 07:53:09,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2
[2024-12-02 07:53:09,267 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-12-02 07:53:09,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:53:09,268 INFO L85 PathProgramCache]: Analyzing trace with hash 830430335, now seen corresponding path program 2 times
[2024-12-02 07:53:09,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:53:09,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837596326]
[2024-12-02 07:53:09,268 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 07:53:09,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:53:09,289 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 07:53:09,289 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:53:09,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:09,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:53:09,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837596326]
[2024-12-02 07:53:09,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837596326] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:53:09,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717410316]
[2024-12-02 07:53:09,597 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 07:53:09,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:53:09,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:53:09,599 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:53:09,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-12-02 07:53:09,655 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 07:53:09,655 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:53:09,656 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-12-02 07:53:09,657 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:53:09,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:09,757 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:53:09,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:09,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717410316] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:53:09,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 07:53:09,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10
[2024-12-02 07:53:09,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498545735]
[2024-12-02 07:53:09,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:53:09,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-12-02 07:53:09,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:53:09,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-12-02 07:53:09,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110
[2024-12-02 07:53:09,878 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18
[2024-12-02 07:53:09,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 21 transitions, 94 flow. Second operand has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 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)
[2024-12-02 07:53:09,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 07:53:09,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18
[2024-12-02 07:53:09,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 07:53:10,103 INFO L124 PetriNetUnfolderBase]: 103/192 cut-off events.
[2024-12-02 07:53:10,103 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES.
[2024-12-02 07:53:10,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 568 conditions, 192 events. 103/192 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 587 event pairs, 13 based on Foata normal form. 3/195 useless extension candidates. Maximal degree in co-relation 551. Up to 84 conditions per place.
[2024-12-02 07:53:10,106 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 34 selfloop transitions, 18 changer transitions 9/62 dead transitions.
[2024-12-02 07:53:10,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 62 transitions, 350 flow
[2024-12-02 07:53:10,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2024-12-02 07:53:10,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states.
[2024-12-02 07:53:10,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 92 transitions.
[2024-12-02 07:53:10,109 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111
[2024-12-02 07:53:10,109 INFO L175 Difference]: Start difference. First operand has 29 places, 21 transitions, 94 flow. Second operand 10 states and 92 transitions.
[2024-12-02 07:53:10,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 62 transitions, 350 flow
[2024-12-02 07:53:10,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 62 transitions, 337 flow, removed 4 selfloop flow, removed 2 redundant places.
[2024-12-02 07:53:10,112 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 196 flow
[2024-12-02 07:53:10,112 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=196, PETRI_PLACES=39, PETRI_TRANSITIONS=33}
[2024-12-02 07:53:10,113 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 19 predicate places.
[2024-12-02 07:53:10,113 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 196 flow
[2024-12-02 07:53:10,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 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)
[2024-12-02 07:53:10,114 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 07:53:10,114 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:53:10,125 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-12-02 07:53:10,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:53:10,314 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-12-02 07:53:10,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:53:10,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1893686801, now seen corresponding path program 3 times
[2024-12-02 07:53:10,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:53:10,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687535486]
[2024-12-02 07:53:10,315 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-12-02 07:53:10,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:53:10,327 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-12-02 07:53:10,327 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:53:10,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:10,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:53:10,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687535486]
[2024-12-02 07:53:10,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687535486] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:53:10,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322828284]
[2024-12-02 07:53:10,502 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-12-02 07:53:10,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:53:10,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:53:10,504 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:53:10,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-12-02 07:53:10,556 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-12-02 07:53:10,556 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:53:10,557 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-12-02 07:53:10,558 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:53:10,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:10,639 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:53:10,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:10,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322828284] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:53:10,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 07:53:10,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9
[2024-12-02 07:53:10,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497171068]
[2024-12-02 07:53:10,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:53:10,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-12-02 07:53:10,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:53:10,771 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-12-02 07:53:10,771 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90
[2024-12-02 07:53:10,772 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18
[2024-12-02 07:53:10,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 196 flow. Second operand has 10 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 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)
[2024-12-02 07:53:10,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 07:53:10,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18
[2024-12-02 07:53:10,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 07:53:10,907 INFO L124 PetriNetUnfolderBase]: 117/215 cut-off events.
[2024-12-02 07:53:10,907 INFO L125 PetriNetUnfolderBase]: For 283/283 co-relation queries the response was YES.
[2024-12-02 07:53:10,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 774 conditions, 215 events. 117/215 cut-off events. For 283/283 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 692 event pairs, 18 based on Foata normal form. 2/215 useless extension candidates. Maximal degree in co-relation 721. Up to 159 conditions per place.
[2024-12-02 07:53:10,909 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 38 selfloop transitions, 14 changer transitions 6/59 dead transitions.
[2024-12-02 07:53:10,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 59 transitions, 415 flow
[2024-12-02 07:53:10,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-12-02 07:53:10,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2024-12-02 07:53:10,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 72 transitions.
[2024-12-02 07:53:10,911 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5
[2024-12-02 07:53:10,911 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 196 flow. Second operand 8 states and 72 transitions.
[2024-12-02 07:53:10,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 59 transitions, 415 flow
[2024-12-02 07:53:10,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 59 transitions, 357 flow, removed 22 selfloop flow, removed 4 redundant places.
[2024-12-02 07:53:10,915 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 232 flow
[2024-12-02 07:53:10,916 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=232, PETRI_PLACES=45, PETRI_TRANSITIONS=40}
[2024-12-02 07:53:10,916 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 25 predicate places.
[2024-12-02 07:53:10,916 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 232 flow
[2024-12-02 07:53:10,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 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)
[2024-12-02 07:53:10,917 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 07:53:10,917 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:53:10,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2024-12-02 07:53:11,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:53:11,118 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-12-02 07:53:11,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:53:11,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1003215026, now seen corresponding path program 2 times
[2024-12-02 07:53:11,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:53:11,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361765397]
[2024-12-02 07:53:11,118 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 07:53:11,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:53:11,126 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 07:53:11,126 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:53:11,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:11,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:53:11,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361765397]
[2024-12-02 07:53:11,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361765397] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:53:11,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23973400]
[2024-12-02 07:53:11,276 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 07:53:11,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:53:11,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:53:11,279 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:53:11,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-12-02 07:53:11,327 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 07:53:11,327 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:53:11,328 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 16 conjuncts are in the unsatisfiable core
[2024-12-02 07:53:11,329 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:53:11,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:11,455 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:53:11,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:11,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23973400] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:53:11,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 07:53:11,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 6] total 13
[2024-12-02 07:53:11,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710394681]
[2024-12-02 07:53:11,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:53:11,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-12-02 07:53:11,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:53:11,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-12-02 07:53:11,690 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182
[2024-12-02 07:53:11,690 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18
[2024-12-02 07:53:11,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 232 flow. Second operand has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 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)
[2024-12-02 07:53:11,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 07:53:11,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18
[2024-12-02 07:53:11,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 07:53:11,934 INFO L124 PetriNetUnfolderBase]: 173/317 cut-off events.
[2024-12-02 07:53:11,935 INFO L125 PetriNetUnfolderBase]: For 595/595 co-relation queries the response was YES.
[2024-12-02 07:53:11,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1140 conditions, 317 events. 173/317 cut-off events. For 595/595 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1183 event pairs, 24 based on Foata normal form. 2/315 useless extension candidates. Maximal degree in co-relation 1080. Up to 221 conditions per place.
[2024-12-02 07:53:11,938 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 55 selfloop transitions, 26 changer transitions 7/89 dead transitions.
[2024-12-02 07:53:11,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 89 transitions, 657 flow
[2024-12-02 07:53:11,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2024-12-02 07:53:11,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states.
[2024-12-02 07:53:11,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 104 transitions.
[2024-12-02 07:53:11,939 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145
[2024-12-02 07:53:11,940 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 232 flow. Second operand 12 states and 104 transitions.
[2024-12-02 07:53:11,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 89 transitions, 657 flow
[2024-12-02 07:53:11,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 89 transitions, 595 flow, removed 22 selfloop flow, removed 3 redundant places.
[2024-12-02 07:53:11,946 INFO L231 Difference]: Finished difference. Result has 59 places, 61 transitions, 414 flow
[2024-12-02 07:53:11,946 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=414, PETRI_PLACES=59, PETRI_TRANSITIONS=61}
[2024-12-02 07:53:11,947 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 39 predicate places.
[2024-12-02 07:53:11,947 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 61 transitions, 414 flow
[2024-12-02 07:53:11,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 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)
[2024-12-02 07:53:11,947 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 07:53:11,947 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:53:11,954 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2024-12-02 07:53:12,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2024-12-02 07:53:12,148 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-12-02 07:53:12,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:53:12,148 INFO L85 PathProgramCache]: Analyzing trace with hash -624031432, now seen corresponding path program 3 times
[2024-12-02 07:53:12,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:53:12,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164301339]
[2024-12-02 07:53:12,149 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-12-02 07:53:12,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:53:12,162 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-12-02 07:53:12,162 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:53:12,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:12,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:53:12,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164301339]
[2024-12-02 07:53:12,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164301339] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:53:12,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875317917]
[2024-12-02 07:53:12,330 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-12-02 07:53:12,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:53:12,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:53:12,333 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:53:12,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-12-02 07:53:12,385 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-12-02 07:53:12,385 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:53:12,386 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-12-02 07:53:12,387 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:53:12,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:12,451 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:53:12,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:12,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875317917] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:53:12,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 07:53:12,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10
[2024-12-02 07:53:12,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205756784]
[2024-12-02 07:53:12,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:53:12,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-12-02 07:53:12,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:53:12,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-12-02 07:53:12,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110
[2024-12-02 07:53:12,542 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18
[2024-12-02 07:53:12,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 61 transitions, 414 flow. Second operand has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 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)
[2024-12-02 07:53:12,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 07:53:12,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18
[2024-12-02 07:53:12,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 07:53:12,726 INFO L124 PetriNetUnfolderBase]: 204/377 cut-off events.
[2024-12-02 07:53:12,726 INFO L125 PetriNetUnfolderBase]: For 1078/1078 co-relation queries the response was YES.
[2024-12-02 07:53:12,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1543 conditions, 377 events. 204/377 cut-off events. For 1078/1078 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1496 event pairs, 34 based on Foata normal form. 3/378 useless extension candidates. Maximal degree in co-relation 1471. Up to 268 conditions per place.
[2024-12-02 07:53:12,729 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 62 selfloop transitions, 25 changer transitions 7/95 dead transitions.
[2024-12-02 07:53:12,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 95 transitions, 809 flow
[2024-12-02 07:53:12,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2024-12-02 07:53:12,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states.
[2024-12-02 07:53:12,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 87 transitions.
[2024-12-02 07:53:12,731 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334
[2024-12-02 07:53:12,731 INFO L175 Difference]: Start difference. First operand has 59 places, 61 transitions, 414 flow. Second operand 10 states and 87 transitions.
[2024-12-02 07:53:12,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 95 transitions, 809 flow
[2024-12-02 07:53:12,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 95 transitions, 732 flow, removed 31 selfloop flow, removed 3 redundant places.
[2024-12-02 07:53:12,737 INFO L231 Difference]: Finished difference. Result has 68 places, 72 transitions, 485 flow
[2024-12-02 07:53:12,737 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=485, PETRI_PLACES=68, PETRI_TRANSITIONS=72}
[2024-12-02 07:53:12,738 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 48 predicate places.
[2024-12-02 07:53:12,738 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 72 transitions, 485 flow
[2024-12-02 07:53:12,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 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)
[2024-12-02 07:53:12,738 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 07:53:12,738 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:53:12,748 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2024-12-02 07:53:12,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:53:12,939 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-12-02 07:53:12,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:53:12,939 INFO L85 PathProgramCache]: Analyzing trace with hash 863726893, now seen corresponding path program 1 times
[2024-12-02 07:53:12,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:53:12,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865306521]
[2024-12-02 07:53:12,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:53:12,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:53:12,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:53:13,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:13,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:53:13,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865306521]
[2024-12-02 07:53:13,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865306521] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:53:13,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244582218]
[2024-12-02 07:53:13,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-12-02 07:53:13,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:53:13,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:53:13,304 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:53:13,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2024-12-02 07:53:13,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:53:13,361 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-12-02 07:53:13,362 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:53:13,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:13,539 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:53:14,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:14,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244582218] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:53:14,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 07:53:14,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18
[2024-12-02 07:53:14,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463968189]
[2024-12-02 07:53:14,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:53:14,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2024-12-02 07:53:14,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:53:14,105 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2024-12-02 07:53:14,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342
[2024-12-02 07:53:14,105 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18
[2024-12-02 07:53:14,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 72 transitions, 485 flow. Second operand has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 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)
[2024-12-02 07:53:14,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 07:53:14,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18
[2024-12-02 07:53:14,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 07:53:15,232 INFO L124 PetriNetUnfolderBase]: 274/524 cut-off events.
[2024-12-02 07:53:15,232 INFO L125 PetriNetUnfolderBase]: For 1535/1535 co-relation queries the response was YES.
[2024-12-02 07:53:15,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2110 conditions, 524 events. 274/524 cut-off events. For 1535/1535 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2443 event pairs, 21 based on Foata normal form. 3/523 useless extension candidates. Maximal degree in co-relation 1995. Up to 247 conditions per place.
[2024-12-02 07:53:15,236 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 85 selfloop transitions, 60 changer transitions 31/177 dead transitions.
[2024-12-02 07:53:15,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 177 transitions, 1345 flow
[2024-12-02 07:53:15,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2024-12-02 07:53:15,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2024-12-02 07:53:15,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 199 transitions.
[2024-12-02 07:53:15,239 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46064814814814814
[2024-12-02 07:53:15,239 INFO L175 Difference]: Start difference. First operand has 68 places, 72 transitions, 485 flow. Second operand 24 states and 199 transitions.
[2024-12-02 07:53:15,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 177 transitions, 1345 flow
[2024-12-02 07:53:15,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 177 transitions, 1280 flow, removed 27 selfloop flow, removed 3 redundant places.
[2024-12-02 07:53:15,247 INFO L231 Difference]: Finished difference. Result has 98 places, 100 transitions, 767 flow
[2024-12-02 07:53:15,247 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=767, PETRI_PLACES=98, PETRI_TRANSITIONS=100}
[2024-12-02 07:53:15,248 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 78 predicate places.
[2024-12-02 07:53:15,248 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 100 transitions, 767 flow
[2024-12-02 07:53:15,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 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)
[2024-12-02 07:53:15,248 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 07:53:15,248 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:53:15,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2024-12-02 07:53:15,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:53:15,449 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-12-02 07:53:15,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:53:15,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1698509881, now seen corresponding path program 2 times
[2024-12-02 07:53:15,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:53:15,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749840338]
[2024-12-02 07:53:15,450 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 07:53:15,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:53:15,470 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 07:53:15,470 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:53:16,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:16,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:53:16,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749840338]
[2024-12-02 07:53:16,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749840338] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:53:16,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666506534]
[2024-12-02 07:53:16,020 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 07:53:16,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:53:16,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:53:16,022 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:53:16,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2024-12-02 07:53:16,122 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 07:53:16,122 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:53:16,123 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-12-02 07:53:16,124 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:53:16,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:16,321 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:53:16,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:16,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666506534] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:53:16,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 07:53:16,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18
[2024-12-02 07:53:16,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920276584]
[2024-12-02 07:53:16,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:53:16,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2024-12-02 07:53:16,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:53:16,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2024-12-02 07:53:16,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342
[2024-12-02 07:53:16,739 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18
[2024-12-02 07:53:16,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 100 transitions, 767 flow. Second operand has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 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)
[2024-12-02 07:53:16,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 07:53:16,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18
[2024-12-02 07:53:16,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 07:53:18,109 INFO L124 PetriNetUnfolderBase]: 320/617 cut-off events.
[2024-12-02 07:53:18,109 INFO L125 PetriNetUnfolderBase]: For 4350/4350 co-relation queries the response was YES.
[2024-12-02 07:53:18,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3068 conditions, 617 events. 320/617 cut-off events. For 4350/4350 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3023 event pairs, 21 based on Foata normal form. 4/617 useless extension candidates. Maximal degree in co-relation 2932. Up to 276 conditions per place.
[2024-12-02 07:53:18,115 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 94 selfloop transitions, 88 changer transitions 17/200 dead transitions.
[2024-12-02 07:53:18,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 200 transitions, 1893 flow
[2024-12-02 07:53:18,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2024-12-02 07:53:18,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states.
[2024-12-02 07:53:18,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 219 transitions.
[2024-12-02 07:53:18,118 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4506172839506173
[2024-12-02 07:53:18,118 INFO L175 Difference]: Start difference. First operand has 98 places, 100 transitions, 767 flow. Second operand 27 states and 219 transitions.
[2024-12-02 07:53:18,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 200 transitions, 1893 flow
[2024-12-02 07:53:18,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 200 transitions, 1687 flow, removed 81 selfloop flow, removed 12 redundant places.
[2024-12-02 07:53:18,142 INFO L231 Difference]: Finished difference. Result has 116 places, 133 transitions, 1321 flow
[2024-12-02 07:53:18,142 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1321, PETRI_PLACES=116, PETRI_TRANSITIONS=133}
[2024-12-02 07:53:18,143 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 96 predicate places.
[2024-12-02 07:53:18,143 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 133 transitions, 1321 flow
[2024-12-02 07:53:18,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 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)
[2024-12-02 07:53:18,143 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 07:53:18,144 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:53:18,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0
[2024-12-02 07:53:18,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:53:18,344 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-12-02 07:53:18,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:53:18,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1777158121, now seen corresponding path program 3 times
[2024-12-02 07:53:18,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:53:18,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072753035]
[2024-12-02 07:53:18,345 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-12-02 07:53:18,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:53:18,366 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-12-02 07:53:18,366 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:53:18,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:18,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:53:18,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072753035]
[2024-12-02 07:53:18,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072753035] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:53:18,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887250175]
[2024-12-02 07:53:18,864 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-12-02 07:53:18,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:53:18,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:53:18,866 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:53:18,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2024-12-02 07:53:19,050 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-12-02 07:53:19,050 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:53:19,051 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-12-02 07:53:19,052 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:53:19,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:19,206 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:53:19,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:19,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887250175] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:53:19,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 07:53:19,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18
[2024-12-02 07:53:19,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977818810]
[2024-12-02 07:53:19,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:53:19,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2024-12-02 07:53:19,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:53:19,600 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2024-12-02 07:53:19,600 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342
[2024-12-02 07:53:19,601 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18
[2024-12-02 07:53:19,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 133 transitions, 1321 flow. Second operand has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 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)
[2024-12-02 07:53:19,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 07:53:19,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18
[2024-12-02 07:53:19,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 07:53:20,938 INFO L124 PetriNetUnfolderBase]: 319/614 cut-off events.
[2024-12-02 07:53:20,938 INFO L125 PetriNetUnfolderBase]: For 4836/4836 co-relation queries the response was YES.
[2024-12-02 07:53:20,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3362 conditions, 614 events. 319/614 cut-off events. For 4836/4836 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3021 event pairs, 21 based on Foata normal form. 3/613 useless extension candidates. Maximal degree in co-relation 3219. Up to 282 conditions per place.
[2024-12-02 07:53:20,942 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 95 selfloop transitions, 90 changer transitions 14/200 dead transitions.
[2024-12-02 07:53:20,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 200 transitions, 2081 flow
[2024-12-02 07:53:20,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2024-12-02 07:53:20,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states.
[2024-12-02 07:53:20,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 217 transitions.
[2024-12-02 07:53:20,944 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44650205761316875
[2024-12-02 07:53:20,944 INFO L175 Difference]: Start difference. First operand has 116 places, 133 transitions, 1321 flow. Second operand 27 states and 217 transitions.
[2024-12-02 07:53:20,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 200 transitions, 2081 flow
[2024-12-02 07:53:20,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 200 transitions, 1651 flow, removed 191 selfloop flow, removed 10 redundant places.
[2024-12-02 07:53:20,982 INFO L231 Difference]: Finished difference. Result has 133 places, 139 transitions, 1278 flow
[2024-12-02 07:53:20,982 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=965, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1278, PETRI_PLACES=133, PETRI_TRANSITIONS=139}
[2024-12-02 07:53:20,983 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 113 predicate places.
[2024-12-02 07:53:20,983 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 139 transitions, 1278 flow
[2024-12-02 07:53:20,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 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)
[2024-12-02 07:53:20,983 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 07:53:20,984 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:53:20,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0
[2024-12-02 07:53:21,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2024-12-02 07:53:21,184 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-12-02 07:53:21,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:53:21,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1644960981, now seen corresponding path program 4 times
[2024-12-02 07:53:21,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:53:21,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320177393]
[2024-12-02 07:53:21,185 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-12-02 07:53:21,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:53:21,199 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-12-02 07:53:21,199 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:53:21,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:21,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:53:21,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320177393]
[2024-12-02 07:53:21,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320177393] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:53:21,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698531646]
[2024-12-02 07:53:21,499 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-12-02 07:53:21,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:53:21,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:53:21,501 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:53:21,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2024-12-02 07:53:21,556 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-12-02 07:53:21,557 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:53:21,557 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-12-02 07:53:21,558 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:53:21,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:21,823 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:53:34,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:34,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698531646] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:53:34,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 07:53:34,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17
[2024-12-02 07:53:34,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102272289]
[2024-12-02 07:53:34,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:53:34,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2024-12-02 07:53:34,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:53:34,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2024-12-02 07:53:34,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=236, Unknown=3, NotChecked=0, Total=306
[2024-12-02 07:53:34,806 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18
[2024-12-02 07:53:34,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 139 transitions, 1278 flow. Second operand has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 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)
[2024-12-02 07:53:34,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 07:53:34,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18
[2024-12-02 07:53:34,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 07:53:36,637 INFO L124 PetriNetUnfolderBase]: 353/683 cut-off events.
[2024-12-02 07:53:36,637 INFO L125 PetriNetUnfolderBase]: For 2458/2458 co-relation queries the response was YES.
[2024-12-02 07:53:36,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3393 conditions, 683 events. 353/683 cut-off events. For 2458/2458 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3451 event pairs, 38 based on Foata normal form. 3/676 useless extension candidates. Maximal degree in co-relation 3345. Up to 539 conditions per place.
[2024-12-02 07:53:36,641 INFO L140 encePairwiseOnDemand]: 9/18 looper letters, 140 selfloop transitions, 46 changer transitions 14/201 dead transitions.
[2024-12-02 07:53:36,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 201 transitions, 2061 flow
[2024-12-02 07:53:36,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2024-12-02 07:53:36,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states.
[2024-12-02 07:53:36,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 146 transitions.
[2024-12-02 07:53:36,642 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4506172839506173
[2024-12-02 07:53:36,642 INFO L175 Difference]: Start difference. First operand has 133 places, 139 transitions, 1278 flow. Second operand 18 states and 146 transitions.
[2024-12-02 07:53:36,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 201 transitions, 2061 flow
[2024-12-02 07:53:36,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 201 transitions, 1819 flow, removed 58 selfloop flow, removed 22 redundant places.
[2024-12-02 07:53:36,655 INFO L231 Difference]: Finished difference. Result has 134 places, 160 transitions, 1430 flow
[2024-12-02 07:53:36,655 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1055, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1430, PETRI_PLACES=134, PETRI_TRANSITIONS=160}
[2024-12-02 07:53:36,656 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 114 predicate places.
[2024-12-02 07:53:36,656 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 160 transitions, 1430 flow
[2024-12-02 07:53:36,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 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)
[2024-12-02 07:53:36,656 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 07:53:36,656 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:53:36,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0
[2024-12-02 07:53:36,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10
[2024-12-02 07:53:36,857 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-12-02 07:53:36,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:53:36,857 INFO L85 PathProgramCache]: Analyzing trace with hash 563882192, now seen corresponding path program 4 times
[2024-12-02 07:53:36,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:53:36,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449073181]
[2024-12-02 07:53:36,857 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-12-02 07:53:36,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:53:36,869 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-12-02 07:53:36,869 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:53:37,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:37,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:53:37,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449073181]
[2024-12-02 07:53:37,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449073181] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:53:37,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527743688]
[2024-12-02 07:53:37,108 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-12-02 07:53:37,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:53:37,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:53:37,110 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:53:37,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2024-12-02 07:53:37,180 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-12-02 07:53:37,180 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:53:37,181 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 15 conjuncts are in the unsatisfiable core
[2024-12-02 07:53:37,182 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:53:37,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:37,334 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:53:37,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:37,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527743688] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:53:37,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 07:53:37,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 15
[2024-12-02 07:53:37,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808915460]
[2024-12-02 07:53:37,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:53:37,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2024-12-02 07:53:37,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:53:37,536 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2024-12-02 07:53:37,536 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240
[2024-12-02 07:53:37,536 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18
[2024-12-02 07:53:37,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 160 transitions, 1430 flow. Second operand has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 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)
[2024-12-02 07:53:37,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 07:53:37,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18
[2024-12-02 07:53:37,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 07:53:37,892 INFO L124 PetriNetUnfolderBase]: 345/671 cut-off events.
[2024-12-02 07:53:37,893 INFO L125 PetriNetUnfolderBase]: For 2314/2314 co-relation queries the response was YES.
[2024-12-02 07:53:37,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3402 conditions, 671 events. 345/671 cut-off events. For 2314/2314 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3415 event pairs, 37 based on Foata normal form. 4/667 useless extension candidates. Maximal degree in co-relation 3329. Up to 541 conditions per place.
[2024-12-02 07:53:37,899 INFO L140 encePairwiseOnDemand]: 11/18 looper letters, 138 selfloop transitions, 30 changer transitions 25/194 dead transitions.
[2024-12-02 07:53:37,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 194 transitions, 1992 flow
[2024-12-02 07:53:37,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2024-12-02 07:53:37,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states.
[2024-12-02 07:53:37,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 109 transitions.
[2024-12-02 07:53:37,900 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4658119658119658
[2024-12-02 07:53:37,900 INFO L175 Difference]: Start difference. First operand has 134 places, 160 transitions, 1430 flow. Second operand 13 states and 109 transitions.
[2024-12-02 07:53:37,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 194 transitions, 1992 flow
[2024-12-02 07:53:37,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 194 transitions, 1863 flow, removed 43 selfloop flow, removed 9 redundant places.
[2024-12-02 07:53:37,917 INFO L231 Difference]: Finished difference. Result has 139 places, 155 transitions, 1332 flow
[2024-12-02 07:53:37,917 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1291, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1332, PETRI_PLACES=139, PETRI_TRANSITIONS=155}
[2024-12-02 07:53:37,918 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 119 predicate places.
[2024-12-02 07:53:37,918 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 155 transitions, 1332 flow
[2024-12-02 07:53:37,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 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)
[2024-12-02 07:53:37,918 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 07:53:37,918 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:53:37,924 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2024-12-02 07:53:38,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2024-12-02 07:53:38,119 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-12-02 07:53:38,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:53:38,119 INFO L85 PathProgramCache]: Analyzing trace with hash -292221775, now seen corresponding path program 5 times
[2024-12-02 07:53:38,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:53:38,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59282190]
[2024-12-02 07:53:38,119 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-12-02 07:53:38,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:53:38,136 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 07:53:38,137 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:53:38,710 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:38,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:53:38,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59282190]
[2024-12-02 07:53:38,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59282190] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:53:38,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425763816]
[2024-12-02 07:53:38,711 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-12-02 07:53:38,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:53:38,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:53:38,713 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:53:38,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2024-12-02 07:53:38,759 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 07:53:38,759 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:53:38,760 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-12-02 07:53:38,761 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:53:38,915 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:38,916 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:53:41,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:41,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425763816] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:53:41,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 07:53:41,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18
[2024-12-02 07:53:41,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854056224]
[2024-12-02 07:53:41,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:53:41,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2024-12-02 07:53:41,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:53:41,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2024-12-02 07:53:41,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342
[2024-12-02 07:53:41,340 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18
[2024-12-02 07:53:41,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 155 transitions, 1332 flow. Second operand has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 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)
[2024-12-02 07:53:41,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 07:53:41,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18
[2024-12-02 07:53:41,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 07:53:42,379 INFO L124 PetriNetUnfolderBase]: 371/717 cut-off events.
[2024-12-02 07:53:42,379 INFO L125 PetriNetUnfolderBase]: For 2891/2891 co-relation queries the response was YES.
[2024-12-02 07:53:42,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3713 conditions, 717 events. 371/717 cut-off events. For 2891/2891 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3649 event pairs, 33 based on Foata normal form. 2/709 useless extension candidates. Maximal degree in co-relation 3611. Up to 531 conditions per place.
[2024-12-02 07:53:42,383 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 146 selfloop transitions, 56 changer transitions 9/212 dead transitions.
[2024-12-02 07:53:42,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 212 transitions, 2212 flow
[2024-12-02 07:53:42,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2024-12-02 07:53:42,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states.
[2024-12-02 07:53:42,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 149 transitions.
[2024-12-02 07:53:42,385 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43567251461988304
[2024-12-02 07:53:42,385 INFO L175 Difference]: Start difference. First operand has 139 places, 155 transitions, 1332 flow. Second operand 19 states and 149 transitions.
[2024-12-02 07:53:42,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 212 transitions, 2212 flow
[2024-12-02 07:53:42,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 212 transitions, 2112 flow, removed 11 selfloop flow, removed 12 redundant places.
[2024-12-02 07:53:42,398 INFO L231 Difference]: Finished difference. Result has 148 places, 172 transitions, 1658 flow
[2024-12-02 07:53:42,399 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1238, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1658, PETRI_PLACES=148, PETRI_TRANSITIONS=172}
[2024-12-02 07:53:42,399 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 128 predicate places.
[2024-12-02 07:53:42,399 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 172 transitions, 1658 flow
[2024-12-02 07:53:42,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 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)
[2024-12-02 07:53:42,400 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 07:53:42,400 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:53:42,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2024-12-02 07:53:42,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:53:42,600 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-12-02 07:53:42,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:53:42,601 INFO L85 PathProgramCache]: Analyzing trace with hash -209104885, now seen corresponding path program 6 times
[2024-12-02 07:53:42,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:53:42,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511853948]
[2024-12-02 07:53:42,601 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2024-12-02 07:53:42,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:53:42,614 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s)
[2024-12-02 07:53:42,615 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:53:43,058 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:43,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:53:43,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511853948]
[2024-12-02 07:53:43,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511853948] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:53:43,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330822986]
[2024-12-02 07:53:43,058 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2024-12-02 07:53:43,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:53:43,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:53:43,060 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:53:43,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2024-12-02 07:53:43,151 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s)
[2024-12-02 07:53:43,151 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:53:43,152 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-12-02 07:53:43,153 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:53:43,296 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:43,296 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:53:44,065 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:44,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330822986] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:53:44,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 07:53:44,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17
[2024-12-02 07:53:44,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464368532]
[2024-12-02 07:53:44,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:53:44,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2024-12-02 07:53:44,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:53:44,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2024-12-02 07:53:44,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306
[2024-12-02 07:53:44,067 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18
[2024-12-02 07:53:44,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 172 transitions, 1658 flow. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 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)
[2024-12-02 07:53:44,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 07:53:44,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18
[2024-12-02 07:53:44,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 07:53:44,788 INFO L124 PetriNetUnfolderBase]: 363/701 cut-off events.
[2024-12-02 07:53:44,788 INFO L125 PetriNetUnfolderBase]: For 3942/3942 co-relation queries the response was YES.
[2024-12-02 07:53:44,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3853 conditions, 701 events. 363/701 cut-off events. For 3942/3942 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3563 event pairs, 33 based on Foata normal form. 2/693 useless extension candidates. Maximal degree in co-relation 3759. Up to 531 conditions per place.
[2024-12-02 07:53:44,792 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 139 selfloop transitions, 56 changer transitions 9/205 dead transitions.
[2024-12-02 07:53:44,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 205 transitions, 2223 flow
[2024-12-02 07:53:44,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2024-12-02 07:53:44,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states.
[2024-12-02 07:53:44,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 134 transitions.
[2024-12-02 07:53:44,793 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41358024691358025
[2024-12-02 07:53:44,793 INFO L175 Difference]: Start difference. First operand has 148 places, 172 transitions, 1658 flow. Second operand 18 states and 134 transitions.
[2024-12-02 07:53:44,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 205 transitions, 2223 flow
[2024-12-02 07:53:44,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 205 transitions, 1983 flow, removed 102 selfloop flow, removed 9 redundant places.
[2024-12-02 07:53:44,814 INFO L231 Difference]: Finished difference. Result has 157 places, 173 transitions, 1615 flow
[2024-12-02 07:53:44,814 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1411, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1615, PETRI_PLACES=157, PETRI_TRANSITIONS=173}
[2024-12-02 07:53:44,814 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 137 predicate places.
[2024-12-02 07:53:44,814 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 173 transitions, 1615 flow
[2024-12-02 07:53:44,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 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)
[2024-12-02 07:53:44,815 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 07:53:44,815 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:53:44,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0
[2024-12-02 07:53:45,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2024-12-02 07:53:45,015 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-12-02 07:53:45,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:53:45,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1839268405, now seen corresponding path program 7 times
[2024-12-02 07:53:45,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:53:45,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655565240]
[2024-12-02 07:53:45,016 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2024-12-02 07:53:45,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:53:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:53:45,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:45,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:53:45,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655565240]
[2024-12-02 07:53:45,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655565240] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:53:45,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280764717]
[2024-12-02 07:53:45,369 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2024-12-02 07:53:45,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:53:45,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:53:45,371 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:53:45,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2024-12-02 07:53:45,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:53:45,430 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-12-02 07:53:45,431 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:53:45,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:45,592 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:53:47,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:47,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280764717] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:53:47,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 07:53:47,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17
[2024-12-02 07:53:47,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669803482]
[2024-12-02 07:53:47,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:53:47,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2024-12-02 07:53:47,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:53:47,045 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2024-12-02 07:53:47,045 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306
[2024-12-02 07:53:47,045 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18
[2024-12-02 07:53:47,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 173 transitions, 1615 flow. Second operand has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 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)
[2024-12-02 07:53:47,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 07:53:47,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18
[2024-12-02 07:53:47,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 07:53:47,638 INFO L124 PetriNetUnfolderBase]: 372/717 cut-off events.
[2024-12-02 07:53:47,639 INFO L125 PetriNetUnfolderBase]: For 4722/4722 co-relation queries the response was YES.
[2024-12-02 07:53:47,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4017 conditions, 717 events. 372/717 cut-off events. For 4722/4722 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3643 event pairs, 35 based on Foata normal form. 4/711 useless extension candidates. Maximal degree in co-relation 3935. Up to 592 conditions per place.
[2024-12-02 07:53:47,643 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 153 selfloop transitions, 42 changer transitions 10/206 dead transitions.
[2024-12-02 07:53:47,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 206 transitions, 2253 flow
[2024-12-02 07:53:47,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2024-12-02 07:53:47,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states.
[2024-12-02 07:53:47,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 115 transitions.
[2024-12-02 07:53:47,644 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593
[2024-12-02 07:53:47,644 INFO L175 Difference]: Start difference. First operand has 157 places, 173 transitions, 1615 flow. Second operand 15 states and 115 transitions.
[2024-12-02 07:53:47,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 206 transitions, 2253 flow
[2024-12-02 07:53:47,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 206 transitions, 2089 flow, removed 42 selfloop flow, removed 13 redundant places.
[2024-12-02 07:53:47,665 INFO L231 Difference]: Finished difference. Result has 160 places, 176 transitions, 1661 flow
[2024-12-02 07:53:47,666 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1482, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1661, PETRI_PLACES=160, PETRI_TRANSITIONS=176}
[2024-12-02 07:53:47,666 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 140 predicate places.
[2024-12-02 07:53:47,666 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 176 transitions, 1661 flow
[2024-12-02 07:53:47,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 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)
[2024-12-02 07:53:47,666 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 07:53:47,666 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:53:47,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0
[2024-12-02 07:53:47,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2024-12-02 07:53:47,867 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-12-02 07:53:47,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:53:47,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1497345901, now seen corresponding path program 8 times
[2024-12-02 07:53:47,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:53:47,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312224453]
[2024-12-02 07:53:47,867 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 07:53:47,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:53:47,876 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 07:53:47,876 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:53:48,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:48,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:53:48,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312224453]
[2024-12-02 07:53:48,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312224453] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:53:48,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793314562]
[2024-12-02 07:53:48,208 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 07:53:48,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:53:48,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:53:48,211 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:53:48,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2024-12-02 07:53:48,291 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 07:53:48,291 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:53:48,292 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-12-02 07:53:48,293 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:53:48,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:48,463 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:53:49,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:49,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793314562] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:53:49,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 07:53:49,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 15
[2024-12-02 07:53:49,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365700162]
[2024-12-02 07:53:49,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:53:49,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2024-12-02 07:53:49,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:53:49,293 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2024-12-02 07:53:49,294 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240
[2024-12-02 07:53:49,294 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18
[2024-12-02 07:53:49,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 176 transitions, 1661 flow. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 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)
[2024-12-02 07:53:49,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 07:53:49,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18
[2024-12-02 07:53:49,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 07:53:49,935 INFO L124 PetriNetUnfolderBase]: 377/723 cut-off events.
[2024-12-02 07:53:49,935 INFO L125 PetriNetUnfolderBase]: For 4247/4247 co-relation queries the response was YES.
[2024-12-02 07:53:49,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4032 conditions, 723 events. 377/723 cut-off events. For 4247/4247 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3688 event pairs, 37 based on Foata normal form. 2/713 useless extension candidates. Maximal degree in co-relation 3975. Up to 630 conditions per place.
[2024-12-02 07:53:49,941 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 166 selfloop transitions, 42 changer transitions 6/215 dead transitions.
[2024-12-02 07:53:49,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 215 transitions, 2354 flow
[2024-12-02 07:53:49,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2024-12-02 07:53:49,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states.
[2024-12-02 07:53:49,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 132 transitions.
[2024-12-02 07:53:49,942 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074
[2024-12-02 07:53:49,942 INFO L175 Difference]: Start difference. First operand has 160 places, 176 transitions, 1661 flow. Second operand 18 states and 132 transitions.
[2024-12-02 07:53:49,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 215 transitions, 2354 flow
[2024-12-02 07:53:49,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 215 transitions, 2233 flow, removed 26 selfloop flow, removed 13 redundant places.
[2024-12-02 07:53:49,966 INFO L231 Difference]: Finished difference. Result has 170 places, 188 transitions, 1848 flow
[2024-12-02 07:53:49,967 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1540, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1848, PETRI_PLACES=170, PETRI_TRANSITIONS=188}
[2024-12-02 07:53:49,967 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 150 predicate places.
[2024-12-02 07:53:49,967 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 188 transitions, 1848 flow
[2024-12-02 07:53:49,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 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)
[2024-12-02 07:53:49,967 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 07:53:49,967 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:53:49,977 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0
[2024-12-02 07:53:50,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:53:50,168 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-12-02 07:53:50,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:53:50,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1938152219, now seen corresponding path program 9 times
[2024-12-02 07:53:50,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:53:50,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723045251]
[2024-12-02 07:53:50,169 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-12-02 07:53:50,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:53:50,180 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-12-02 07:53:50,180 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:53:50,512 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:50,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:53:50,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723045251]
[2024-12-02 07:53:50,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723045251] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:53:50,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087236987]
[2024-12-02 07:53:50,512 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-12-02 07:53:50,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:53:50,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:53:50,514 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:53:50,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2024-12-02 07:53:50,576 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-12-02 07:53:50,576 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:53:50,577 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-12-02 07:53:50,578 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:53:50,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:50,732 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:53:51,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:51,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087236987] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:53:51,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 07:53:51,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16
[2024-12-02 07:53:51,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245763108]
[2024-12-02 07:53:51,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:53:51,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2024-12-02 07:53:51,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:53:51,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2024-12-02 07:53:51,622 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272
[2024-12-02 07:53:51,622 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18
[2024-12-02 07:53:51,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 188 transitions, 1848 flow. Second operand has 17 states, 17 states have (on average 4.823529411764706) internal successors, (82), 17 states have internal predecessors, (82), 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)
[2024-12-02 07:53:51,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 07:53:51,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18
[2024-12-02 07:53:51,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 07:53:52,458 INFO L124 PetriNetUnfolderBase]: 401/768 cut-off events.
[2024-12-02 07:53:52,459 INFO L125 PetriNetUnfolderBase]: For 6095/6095 co-relation queries the response was YES.
[2024-12-02 07:53:52,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4566 conditions, 768 events. 401/768 cut-off events. For 6095/6095 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 3939 event pairs, 39 based on Foata normal form. 2/758 useless extension candidates. Maximal degree in co-relation 4463. Up to 623 conditions per place.
[2024-12-02 07:53:52,464 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 168 selfloop transitions, 55 changer transitions 7/231 dead transitions.
[2024-12-02 07:53:52,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 231 transitions, 2703 flow
[2024-12-02 07:53:52,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2024-12-02 07:53:52,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states.
[2024-12-02 07:53:52,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 141 transitions.
[2024-12-02 07:53:52,465 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4351851851851852
[2024-12-02 07:53:52,465 INFO L175 Difference]: Start difference. First operand has 170 places, 188 transitions, 1848 flow. Second operand 18 states and 141 transitions.
[2024-12-02 07:53:52,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 231 transitions, 2703 flow
[2024-12-02 07:53:52,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 231 transitions, 2555 flow, removed 58 selfloop flow, removed 8 redundant places.
[2024-12-02 07:53:52,493 INFO L231 Difference]: Finished difference. Result has 184 places, 197 transitions, 2100 flow
[2024-12-02 07:53:52,493 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1728, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2100, PETRI_PLACES=184, PETRI_TRANSITIONS=197}
[2024-12-02 07:53:52,494 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 164 predicate places.
[2024-12-02 07:53:52,494 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 197 transitions, 2100 flow
[2024-12-02 07:53:52,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.823529411764706) internal successors, (82), 17 states have internal predecessors, (82), 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)
[2024-12-02 07:53:52,494 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 07:53:52,494 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:53:52,499 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0
[2024-12-02 07:53:52,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2024-12-02 07:53:52,694 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-12-02 07:53:52,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:53:52,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1400296641, now seen corresponding path program 10 times
[2024-12-02 07:53:52,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:53:52,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31930844]
[2024-12-02 07:53:52,695 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-12-02 07:53:52,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:53:52,703 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-12-02 07:53:52,703 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:53:53,011 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:53,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:53:53,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31930844]
[2024-12-02 07:53:53,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31930844] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:53:53,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629140236]
[2024-12-02 07:53:53,012 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-12-02 07:53:53,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:53:53,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:53:53,014 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:53:53,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2024-12-02 07:53:53,075 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-12-02 07:53:53,075 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:53:53,076 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-12-02 07:53:53,077 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:53:53,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:53,338 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:53:54,146 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:54,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629140236] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:53:54,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 07:53:54,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18
[2024-12-02 07:53:54,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116179101]
[2024-12-02 07:53:54,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:53:54,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2024-12-02 07:53:54,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:53:54,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2024-12-02 07:53:54,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342
[2024-12-02 07:53:54,148 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18
[2024-12-02 07:53:54,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 197 transitions, 2100 flow. Second operand has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 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)
[2024-12-02 07:53:54,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 07:53:54,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18
[2024-12-02 07:53:54,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 07:53:55,365 INFO L124 PetriNetUnfolderBase]: 435/840 cut-off events.
[2024-12-02 07:53:55,365 INFO L125 PetriNetUnfolderBase]: For 9502/9502 co-relation queries the response was YES.
[2024-12-02 07:53:55,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5467 conditions, 840 events. 435/840 cut-off events. For 9502/9502 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4457 event pairs, 43 based on Foata normal form. 2/832 useless extension candidates. Maximal degree in co-relation 5346. Up to 675 conditions per place.
[2024-12-02 07:53:55,371 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 186 selfloop transitions, 57 changer transitions 8/252 dead transitions.
[2024-12-02 07:53:55,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 252 transitions, 3262 flow
[2024-12-02 07:53:55,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2024-12-02 07:53:55,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states.
[2024-12-02 07:53:55,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 147 transitions.
[2024-12-02 07:53:55,372 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4298245614035088
[2024-12-02 07:53:55,372 INFO L175 Difference]: Start difference. First operand has 184 places, 197 transitions, 2100 flow. Second operand 19 states and 147 transitions.
[2024-12-02 07:53:55,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 252 transitions, 3262 flow
[2024-12-02 07:53:55,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 252 transitions, 3020 flow, removed 73 selfloop flow, removed 14 redundant places.
[2024-12-02 07:53:55,410 INFO L231 Difference]: Finished difference. Result has 194 places, 213 transitions, 2446 flow
[2024-12-02 07:53:55,410 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=1890, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2446, PETRI_PLACES=194, PETRI_TRANSITIONS=213}
[2024-12-02 07:53:55,410 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 174 predicate places.
[2024-12-02 07:53:55,410 INFO L471 AbstractCegarLoop]: Abstraction has has 194 places, 213 transitions, 2446 flow
[2024-12-02 07:53:55,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 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)
[2024-12-02 07:53:55,410 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 07:53:55,411 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:53:55,416 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0
[2024-12-02 07:53:55,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2024-12-02 07:53:55,611 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-12-02 07:53:55,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:53:55,611 INFO L85 PathProgramCache]: Analyzing trace with hash 719044175, now seen corresponding path program 11 times
[2024-12-02 07:53:55,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:53:55,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567455936]
[2024-12-02 07:53:55,612 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-12-02 07:53:55,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:53:55,624 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 07:53:55,624 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:53:55,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:55,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:53:55,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567455936]
[2024-12-02 07:53:55,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567455936] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:53:55,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089627235]
[2024-12-02 07:53:55,872 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-12-02 07:53:55,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:53:55,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:53:55,874 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:53:55,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2024-12-02 07:53:55,955 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 07:53:55,955 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:53:55,956 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-12-02 07:53:55,957 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:53:56,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:56,129 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:53:56,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:56,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089627235] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:53:56,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 07:53:56,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 20
[2024-12-02 07:53:56,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761078972]
[2024-12-02 07:53:56,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:53:56,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2024-12-02 07:53:56,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:53:56,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2024-12-02 07:53:56,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420
[2024-12-02 07:53:56,616 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18
[2024-12-02 07:53:56,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 213 transitions, 2446 flow. Second operand has 21 states, 21 states have (on average 4.857142857142857) internal successors, (102), 21 states have internal predecessors, (102), 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)
[2024-12-02 07:53:56,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 07:53:56,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18
[2024-12-02 07:53:56,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 07:53:57,929 INFO L124 PetriNetUnfolderBase]: 489/947 cut-off events.
[2024-12-02 07:53:57,929 INFO L125 PetriNetUnfolderBase]: For 12376/12376 co-relation queries the response was YES.
[2024-12-02 07:53:57,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6282 conditions, 947 events. 489/947 cut-off events. For 12376/12376 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5263 event pairs, 38 based on Foata normal form. 3/938 useless extension candidates. Maximal degree in co-relation 6147. Up to 713 conditions per place.
[2024-12-02 07:53:57,936 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 196 selfloop transitions, 75 changer transitions 19/291 dead transitions.
[2024-12-02 07:53:57,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 291 transitions, 3901 flow
[2024-12-02 07:53:57,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2024-12-02 07:53:57,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2024-12-02 07:53:57,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 174 transitions.
[2024-12-02 07:53:57,937 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394
[2024-12-02 07:53:57,937 INFO L175 Difference]: Start difference. First operand has 194 places, 213 transitions, 2446 flow. Second operand 22 states and 174 transitions.
[2024-12-02 07:53:57,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 291 transitions, 3901 flow
[2024-12-02 07:53:57,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 291 transitions, 3546 flow, removed 151 selfloop flow, removed 12 redundant places.
[2024-12-02 07:53:57,985 INFO L231 Difference]: Finished difference. Result has 206 places, 244 transitions, 2852 flow
[2024-12-02 07:53:57,986 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=2095, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2852, PETRI_PLACES=206, PETRI_TRANSITIONS=244}
[2024-12-02 07:53:57,986 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 186 predicate places.
[2024-12-02 07:53:57,986 INFO L471 AbstractCegarLoop]: Abstraction has has 206 places, 244 transitions, 2852 flow
[2024-12-02 07:53:57,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.857142857142857) internal successors, (102), 21 states have internal predecessors, (102), 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)
[2024-12-02 07:53:57,986 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 07:53:57,986 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:53:57,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0
[2024-12-02 07:53:58,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:53:58,187 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-12-02 07:53:58,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:53:58,187 INFO L85 PathProgramCache]: Analyzing trace with hash 2035201479, now seen corresponding path program 12 times
[2024-12-02 07:53:58,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:53:58,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825898577]
[2024-12-02 07:53:58,188 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2024-12-02 07:53:58,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:53:58,197 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s)
[2024-12-02 07:53:58,197 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:53:58,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:58,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:53:58,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825898577]
[2024-12-02 07:53:58,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825898577] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:53:58,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519985439]
[2024-12-02 07:53:58,477 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2024-12-02 07:53:58,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:53:58,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:53:58,478 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:53:58,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process
[2024-12-02 07:53:58,561 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s)
[2024-12-02 07:53:58,561 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:53:58,562 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-12-02 07:53:58,562 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:53:58,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:58,683 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:53:59,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:53:59,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519985439] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:53:59,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 07:53:59,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 15
[2024-12-02 07:53:59,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604615539]
[2024-12-02 07:53:59,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:53:59,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2024-12-02 07:53:59,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:53:59,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2024-12-02 07:53:59,462 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240
[2024-12-02 07:53:59,462 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18
[2024-12-02 07:53:59,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 244 transitions, 2852 flow. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 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)
[2024-12-02 07:53:59,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 07:53:59,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18
[2024-12-02 07:53:59,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 07:54:00,174 INFO L124 PetriNetUnfolderBase]: 479/927 cut-off events.
[2024-12-02 07:54:00,174 INFO L125 PetriNetUnfolderBase]: For 10775/10775 co-relation queries the response was YES.
[2024-12-02 07:54:00,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6092 conditions, 927 events. 479/927 cut-off events. For 10775/10775 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5085 event pairs, 42 based on Foata normal form. 3/914 useless extension candidates. Maximal degree in co-relation 5922. Up to 830 conditions per place.
[2024-12-02 07:54:00,180 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 227 selfloop transitions, 40 changer transitions 6/274 dead transitions.
[2024-12-02 07:54:00,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 274 transitions, 3601 flow
[2024-12-02 07:54:00,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2024-12-02 07:54:00,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states.
[2024-12-02 07:54:00,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 128 transitions.
[2024-12-02 07:54:00,181 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3950617283950617
[2024-12-02 07:54:00,181 INFO L175 Difference]: Start difference. First operand has 206 places, 244 transitions, 2852 flow. Second operand 18 states and 128 transitions.
[2024-12-02 07:54:00,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 274 transitions, 3601 flow
[2024-12-02 07:54:00,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 274 transitions, 3145 flow, removed 216 selfloop flow, removed 9 redundant places.
[2024-12-02 07:54:00,227 INFO L231 Difference]: Finished difference. Result has 216 places, 247 transitions, 2569 flow
[2024-12-02 07:54:00,227 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=2396, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2569, PETRI_PLACES=216, PETRI_TRANSITIONS=247}
[2024-12-02 07:54:00,228 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 196 predicate places.
[2024-12-02 07:54:00,228 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 247 transitions, 2569 flow
[2024-12-02 07:54:00,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 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)
[2024-12-02 07:54:00,228 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 07:54:00,228 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:54:00,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0
[2024-12-02 07:54:00,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:54:00,428 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-12-02 07:54:00,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:54:00,429 INFO L85 PathProgramCache]: Analyzing trace with hash 328750693, now seen corresponding path program 13 times
[2024-12-02 07:54:00,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:54:00,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797122474]
[2024-12-02 07:54:00,429 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2024-12-02 07:54:00,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:54:00,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:54:00,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:54:00,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:54:00,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797122474]
[2024-12-02 07:54:00,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797122474] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:54:00,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886812430]
[2024-12-02 07:54:00,747 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2024-12-02 07:54:00,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:54:00,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:54:00,749 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:54:00,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process
[2024-12-02 07:54:00,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:54:00,797 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-12-02 07:54:00,798 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:54:00,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:54:00,963 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:54:01,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:54:01,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886812430] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:54:01,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 07:54:01,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17
[2024-12-02 07:54:01,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425956305]
[2024-12-02 07:54:01,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:54:01,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2024-12-02 07:54:01,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:54:01,781 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2024-12-02 07:54:01,782 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306
[2024-12-02 07:54:01,782 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18
[2024-12-02 07:54:01,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 247 transitions, 2569 flow. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 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)
[2024-12-02 07:54:01,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 07:54:01,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18
[2024-12-02 07:54:01,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 07:54:02,549 INFO L124 PetriNetUnfolderBase]: 505/972 cut-off events.
[2024-12-02 07:54:02,549 INFO L125 PetriNetUnfolderBase]: For 11274/11274 co-relation queries the response was YES.
[2024-12-02 07:54:02,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6263 conditions, 972 events. 505/972 cut-off events. For 11274/11274 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5391 event pairs, 39 based on Foata normal form. 2/949 useless extension candidates. Maximal degree in co-relation 6107. Up to 816 conditions per place.
[2024-12-02 07:54:02,555 INFO L140 encePairwiseOnDemand]: 9/18 looper letters, 226 selfloop transitions, 56 changer transitions 8/291 dead transitions.
[2024-12-02 07:54:02,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 291 transitions, 3638 flow
[2024-12-02 07:54:02,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2024-12-02 07:54:02,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states.
[2024-12-02 07:54:02,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 151 transitions.
[2024-12-02 07:54:02,556 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3994708994708995
[2024-12-02 07:54:02,556 INFO L175 Difference]: Start difference. First operand has 216 places, 247 transitions, 2569 flow. Second operand 21 states and 151 transitions.
[2024-12-02 07:54:02,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 291 transitions, 3638 flow
[2024-12-02 07:54:02,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 291 transitions, 3475 flow, removed 46 selfloop flow, removed 15 redundant places.
[2024-12-02 07:54:02,603 INFO L231 Difference]: Finished difference. Result has 225 places, 257 transitions, 2823 flow
[2024-12-02 07:54:02,604 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=2411, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2823, PETRI_PLACES=225, PETRI_TRANSITIONS=257}
[2024-12-02 07:54:02,604 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 205 predicate places.
[2024-12-02 07:54:02,604 INFO L471 AbstractCegarLoop]: Abstraction has has 225 places, 257 transitions, 2823 flow
[2024-12-02 07:54:02,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 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)
[2024-12-02 07:54:02,604 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 07:54:02,604 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:54:02,610 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0
[2024-12-02 07:54:02,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:54:02,805 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-12-02 07:54:02,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:54:02,805 INFO L85 PathProgramCache]: Analyzing trace with hash 700610149, now seen corresponding path program 14 times
[2024-12-02 07:54:02,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:54:02,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652899350]
[2024-12-02 07:54:02,806 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 07:54:02,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:54:02,816 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 07:54:02,816 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:54:03,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:54:03,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:54:03,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652899350]
[2024-12-02 07:54:03,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652899350] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:54:03,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110206552]
[2024-12-02 07:54:03,069 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 07:54:03,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:54:03,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:54:03,071 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:54:03,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process
[2024-12-02 07:54:03,120 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 07:54:03,120 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:54:03,121 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-12-02 07:54:03,122 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:54:03,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:54:03,249 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:54:03,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:54:03,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110206552] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:54:03,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 07:54:03,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 15
[2024-12-02 07:54:03,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523457299]
[2024-12-02 07:54:03,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:54:03,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2024-12-02 07:54:03,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:54:03,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2024-12-02 07:54:03,563 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240
[2024-12-02 07:54:03,563 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18
[2024-12-02 07:54:03,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 257 transitions, 2823 flow. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 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)
[2024-12-02 07:54:03,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 07:54:03,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18
[2024-12-02 07:54:03,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 07:54:04,675 INFO L124 PetriNetUnfolderBase]: 509/986 cut-off events.
[2024-12-02 07:54:04,675 INFO L125 PetriNetUnfolderBase]: For 13310/13310 co-relation queries the response was YES.
[2024-12-02 07:54:04,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6561 conditions, 986 events. 509/986 cut-off events. For 13310/13310 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5513 event pairs, 35 based on Foata normal form. 3/966 useless extension candidates. Maximal degree in co-relation 6405. Up to 784 conditions per place.
[2024-12-02 07:54:04,682 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 217 selfloop transitions, 74 changer transitions 15/307 dead transitions.
[2024-12-02 07:54:04,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 307 transitions, 3800 flow
[2024-12-02 07:54:04,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2024-12-02 07:54:04,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2024-12-02 07:54:04,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 176 transitions.
[2024-12-02 07:54:04,683 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074
[2024-12-02 07:54:04,683 INFO L175 Difference]: Start difference. First operand has 225 places, 257 transitions, 2823 flow. Second operand 24 states and 176 transitions.
[2024-12-02 07:54:04,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 307 transitions, 3800 flow
[2024-12-02 07:54:04,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 307 transitions, 3607 flow, removed 69 selfloop flow, removed 15 redundant places.
[2024-12-02 07:54:04,749 INFO L231 Difference]: Finished difference. Result has 239 places, 262 transitions, 2933 flow
[2024-12-02 07:54:04,750 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=2634, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2933, PETRI_PLACES=239, PETRI_TRANSITIONS=262}
[2024-12-02 07:54:04,750 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 219 predicate places.
[2024-12-02 07:54:04,750 INFO L471 AbstractCegarLoop]: Abstraction has has 239 places, 262 transitions, 2933 flow
[2024-12-02 07:54:04,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 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)
[2024-12-02 07:54:04,750 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 07:54:04,750 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:54:04,755 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0
[2024-12-02 07:54:04,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:54:04,951 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-12-02 07:54:04,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:54:04,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1478944881, now seen corresponding path program 15 times
[2024-12-02 07:54:04,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:54:04,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020206412]
[2024-12-02 07:54:04,951 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-12-02 07:54:04,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:54:04,963 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-12-02 07:54:04,964 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:54:05,247 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:54:05,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:54:05,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020206412]
[2024-12-02 07:54:05,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020206412] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:54:05,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688230561]
[2024-12-02 07:54:05,247 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-12-02 07:54:05,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:54:05,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:54:05,249 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:54:05,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process
[2024-12-02 07:54:05,309 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-12-02 07:54:05,310 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:54:05,310 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-12-02 07:54:05,311 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:54:05,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:54:05,495 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:54:06,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:54:06,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688230561] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:54:06,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 07:54:06,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16
[2024-12-02 07:54:06,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361976767]
[2024-12-02 07:54:06,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:54:06,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2024-12-02 07:54:06,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:54:06,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2024-12-02 07:54:06,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272
[2024-12-02 07:54:06,334 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18
[2024-12-02 07:54:06,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 262 transitions, 2933 flow. Second operand has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 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)
[2024-12-02 07:54:06,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 07:54:06,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18
[2024-12-02 07:54:06,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 07:54:08,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-12-02 07:54:08,643 INFO L124 PetriNetUnfolderBase]: 504/965 cut-off events.
[2024-12-02 07:54:08,644 INFO L125 PetriNetUnfolderBase]: For 13024/13024 co-relation queries the response was YES.
[2024-12-02 07:54:08,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6444 conditions, 965 events. 504/965 cut-off events. For 13024/13024 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5314 event pairs, 38 based on Foata normal form. 2/947 useless extension candidates. Maximal degree in co-relation 6297. Up to 817 conditions per place.
[2024-12-02 07:54:08,649 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 226 selfloop transitions, 60 changer transitions 8/295 dead transitions.
[2024-12-02 07:54:08,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 295 transitions, 3694 flow
[2024-12-02 07:54:08,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states.
[2024-12-02 07:54:08,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states.
[2024-12-02 07:54:08,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 143 transitions.
[2024-12-02 07:54:08,650 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3972222222222222
[2024-12-02 07:54:08,650 INFO L175 Difference]: Start difference. First operand has 239 places, 262 transitions, 2933 flow. Second operand 20 states and 143 transitions.
[2024-12-02 07:54:08,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 295 transitions, 3694 flow
[2024-12-02 07:54:08,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 295 transitions, 3511 flow, removed 56 selfloop flow, removed 16 redundant places.
[2024-12-02 07:54:08,722 INFO L231 Difference]: Finished difference. Result has 243 places, 264 transitions, 2986 flow
[2024-12-02 07:54:08,722 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=2756, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2986, PETRI_PLACES=243, PETRI_TRANSITIONS=264}
[2024-12-02 07:54:08,723 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 223 predicate places.
[2024-12-02 07:54:08,723 INFO L471 AbstractCegarLoop]: Abstraction has has 243 places, 264 transitions, 2986 flow
[2024-12-02 07:54:08,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 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)
[2024-12-02 07:54:08,723 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 07:54:08,723 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:54:08,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0
[2024-12-02 07:54:08,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:54:08,923 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-12-02 07:54:08,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:54:08,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1499865111, now seen corresponding path program 16 times
[2024-12-02 07:54:08,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:54:08,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488458771]
[2024-12-02 07:54:08,924 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-12-02 07:54:08,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:54:08,931 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-12-02 07:54:08,931 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:54:09,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:54:09,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:54:09,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488458771]
[2024-12-02 07:54:09,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488458771] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:54:09,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837762101]
[2024-12-02 07:54:09,253 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-12-02 07:54:09,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:54:09,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:54:09,254 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:54:09,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process
[2024-12-02 07:54:09,308 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-12-02 07:54:09,308 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:54:09,309 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-12-02 07:54:09,309 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:54:09,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:54:09,620 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:54:10,049 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:54:10,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837762101] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:54:10,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 07:54:10,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18
[2024-12-02 07:54:10,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101669916]
[2024-12-02 07:54:10,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:54:10,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2024-12-02 07:54:10,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:54:10,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2024-12-02 07:54:10,050 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342
[2024-12-02 07:54:10,050 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18
[2024-12-02 07:54:10,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 264 transitions, 2986 flow. Second operand has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 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)
[2024-12-02 07:54:10,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 07:54:10,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18
[2024-12-02 07:54:10,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 07:54:14,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-12-02 07:54:16,071 INFO L124 PetriNetUnfolderBase]: 541/1037 cut-off events.
[2024-12-02 07:54:16,072 INFO L125 PetriNetUnfolderBase]: For 20548/20548 co-relation queries the response was YES.
[2024-12-02 07:54:16,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7555 conditions, 1037 events. 541/1037 cut-off events. For 20548/20548 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 5815 event pairs, 37 based on Foata normal form. 3/1024 useless extension candidates. Maximal degree in co-relation 7395. Up to 762 conditions per place.
[2024-12-02 07:54:16,079 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 211 selfloop transitions, 99 changer transitions 13/324 dead transitions.
[2024-12-02 07:54:16,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 324 transitions, 4402 flow
[2024-12-02 07:54:16,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2024-12-02 07:54:16,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2024-12-02 07:54:16,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 187 transitions.
[2024-12-02 07:54:16,080 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43287037037037035
[2024-12-02 07:54:16,080 INFO L175 Difference]: Start difference. First operand has 243 places, 264 transitions, 2986 flow. Second operand 24 states and 187 transitions.
[2024-12-02 07:54:16,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 324 transitions, 4402 flow
[2024-12-02 07:54:16,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 324 transitions, 4217 flow, removed 47 selfloop flow, removed 16 redundant places.
[2024-12-02 07:54:16,179 INFO L231 Difference]: Finished difference. Result has 250 places, 278 transitions, 3483 flow
[2024-12-02 07:54:16,179 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=2815, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3483, PETRI_PLACES=250, PETRI_TRANSITIONS=278}
[2024-12-02 07:54:16,179 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 230 predicate places.
[2024-12-02 07:54:16,179 INFO L471 AbstractCegarLoop]: Abstraction has has 250 places, 278 transitions, 3483 flow
[2024-12-02 07:54:16,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 19 states have internal predecessors, (91), 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)
[2024-12-02 07:54:16,180 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 07:54:16,180 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:54:16,186 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0
[2024-12-02 07:54:16,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23
[2024-12-02 07:54:16,380 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-12-02 07:54:16,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:54:16,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1578513351, now seen corresponding path program 17 times
[2024-12-02 07:54:16,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:54:16,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887116179]
[2024-12-02 07:54:16,381 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-12-02 07:54:16,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:54:16,388 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 07:54:16,388 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:54:16,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:54:16,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:54:16,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887116179]
[2024-12-02 07:54:16,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887116179] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:54:16,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684939390]
[2024-12-02 07:54:16,746 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-12-02 07:54:16,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:54:16,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:54:16,748 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:54:16,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process
[2024-12-02 07:54:16,847 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 07:54:16,847 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:54:16,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-12-02 07:54:16,849 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:54:17,052 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:54:17,052 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:54:17,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:54:17,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684939390] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:54:17,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 07:54:17,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 20
[2024-12-02 07:54:17,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244266201]
[2024-12-02 07:54:17,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:54:17,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2024-12-02 07:54:17,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:54:17,576 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2024-12-02 07:54:17,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420
[2024-12-02 07:54:17,576 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18
[2024-12-02 07:54:17,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 278 transitions, 3483 flow. Second operand has 21 states, 21 states have (on average 4.857142857142857) internal successors, (102), 21 states have internal predecessors, (102), 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)
[2024-12-02 07:54:17,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 07:54:17,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18
[2024-12-02 07:54:17,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 07:54:18,951 INFO L124 PetriNetUnfolderBase]: 536/1032 cut-off events.
[2024-12-02 07:54:18,951 INFO L125 PetriNetUnfolderBase]: For 19624/19624 co-relation queries the response was YES.
[2024-12-02 07:54:18,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7536 conditions, 1032 events. 536/1032 cut-off events. For 19624/19624 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 5811 event pairs, 36 based on Foata normal form. 3/1019 useless extension candidates. Maximal degree in co-relation 7342. Up to 766 conditions per place.
[2024-12-02 07:54:18,959 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 212 selfloop transitions, 102 changer transitions 12/327 dead transitions.
[2024-12-02 07:54:18,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 327 transitions, 4611 flow
[2024-12-02 07:54:18,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states.
[2024-12-02 07:54:18,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states.
[2024-12-02 07:54:18,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 193 transitions.
[2024-12-02 07:54:18,960 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4288888888888889
[2024-12-02 07:54:18,960 INFO L175 Difference]: Start difference. First operand has 250 places, 278 transitions, 3483 flow. Second operand 25 states and 193 transitions.
[2024-12-02 07:54:18,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 327 transitions, 4611 flow
[2024-12-02 07:54:19,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 327 transitions, 4057 flow, removed 245 selfloop flow, removed 10 redundant places.
[2024-12-02 07:54:19,068 INFO L231 Difference]: Finished difference. Result has 264 places, 283 transitions, 3489 flow
[2024-12-02 07:54:19,068 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=3100, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=3489, PETRI_PLACES=264, PETRI_TRANSITIONS=283}
[2024-12-02 07:54:19,069 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 244 predicate places.
[2024-12-02 07:54:19,069 INFO L471 AbstractCegarLoop]: Abstraction has has 264 places, 283 transitions, 3489 flow
[2024-12-02 07:54:19,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.857142857142857) internal successors, (102), 21 states have internal predecessors, (102), 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)
[2024-12-02 07:54:19,069 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 07:54:19,069 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:54:19,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0
[2024-12-02 07:54:19,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24
[2024-12-02 07:54:19,269 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-12-02 07:54:19,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:54:19,270 INFO L85 PathProgramCache]: Analyzing trace with hash 250102453, now seen corresponding path program 18 times
[2024-12-02 07:54:19,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:54:19,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614468138]
[2024-12-02 07:54:19,270 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2024-12-02 07:54:19,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:54:19,278 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s)
[2024-12-02 07:54:19,278 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:54:19,614 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:54:19,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:54:19,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614468138]
[2024-12-02 07:54:19,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614468138] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:54:19,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481013700]
[2024-12-02 07:54:19,614 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2024-12-02 07:54:19,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:54:19,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:54:19,616 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:54:19,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process
[2024-12-02 07:54:19,801 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s)
[2024-12-02 07:54:19,801 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:54:19,802 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-12-02 07:54:19,802 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:54:19,932 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:54:19,933 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:54:20,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:54:20,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481013700] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:54:20,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 07:54:20,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17
[2024-12-02 07:54:20,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483261201]
[2024-12-02 07:54:20,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:54:20,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states
[2024-12-02 07:54:20,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:54:20,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2024-12-02 07:54:20,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306
[2024-12-02 07:54:20,780 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18
[2024-12-02 07:54:20,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 283 transitions, 3489 flow. Second operand has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 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)
[2024-12-02 07:54:20,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 07:54:20,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18
[2024-12-02 07:54:20,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 07:54:21,840 INFO L124 PetriNetUnfolderBase]: 534/1029 cut-off events.
[2024-12-02 07:54:21,841 INFO L125 PetriNetUnfolderBase]: For 13690/13690 co-relation queries the response was YES.
[2024-12-02 07:54:21,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7179 conditions, 1029 events. 534/1029 cut-off events. For 13690/13690 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 5796 event pairs, 36 based on Foata normal form. 2/1015 useless extension candidates. Maximal degree in co-relation 7090. Up to 873 conditions per place.
[2024-12-02 07:54:21,848 INFO L140 encePairwiseOnDemand]: 9/18 looper letters, 257 selfloop transitions, 57 changer transitions 8/323 dead transitions.
[2024-12-02 07:54:21,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 323 transitions, 4397 flow
[2024-12-02 07:54:21,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2024-12-02 07:54:21,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states.
[2024-12-02 07:54:21,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 160 transitions.
[2024-12-02 07:54:21,849 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42328042328042326
[2024-12-02 07:54:21,849 INFO L175 Difference]: Start difference. First operand has 264 places, 283 transitions, 3489 flow. Second operand 21 states and 160 transitions.
[2024-12-02 07:54:21,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 323 transitions, 4397 flow
[2024-12-02 07:54:21,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 323 transitions, 4071 flow, removed 107 selfloop flow, removed 18 redundant places.
[2024-12-02 07:54:21,933 INFO L231 Difference]: Finished difference. Result has 267 places, 286 transitions, 3424 flow
[2024-12-02 07:54:21,933 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=3163, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3424, PETRI_PLACES=267, PETRI_TRANSITIONS=286}
[2024-12-02 07:54:21,934 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 247 predicate places.
[2024-12-02 07:54:21,934 INFO L471 AbstractCegarLoop]: Abstraction has has 267 places, 286 transitions, 3424 flow
[2024-12-02 07:54:21,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 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)
[2024-12-02 07:54:21,934 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 07:54:21,934 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:54:21,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0
[2024-12-02 07:54:22,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25
[2024-12-02 07:54:22,135 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-12-02 07:54:22,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:54:22,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1681273126, now seen corresponding path program 19 times
[2024-12-02 07:54:22,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:54:22,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444358014]
[2024-12-02 07:54:22,135 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2024-12-02 07:54:22,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:54:22,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:54:22,582 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:54:22,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:54:22,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444358014]
[2024-12-02 07:54:22,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444358014] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:54:22,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031476721]
[2024-12-02 07:54:22,582 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2024-12-02 07:54:22,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:54:22,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:54:22,584 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:54:22,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process
[2024-12-02 07:54:22,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:54:22,635 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 25 conjuncts are in the unsatisfiable core
[2024-12-02 07:54:22,635 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:54:23,179 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:54:23,179 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:54:32,167 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:54:32,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031476721] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:54:32,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 07:54:32,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20
[2024-12-02 07:54:32,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394998059]
[2024-12-02 07:54:32,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:54:32,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2024-12-02 07:54:32,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:54:32,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2024-12-02 07:54:32,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=335, Unknown=2, NotChecked=0, Total=420
[2024-12-02 07:54:32,168 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18
[2024-12-02 07:54:32,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 286 transitions, 3424 flow. Second operand has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 21 states have internal predecessors, (99), 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)
[2024-12-02 07:54:32,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 07:54:32,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18
[2024-12-02 07:54:32,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 07:54:36,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-12-02 07:54:39,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.56s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-12-02 07:54:44,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-12-02 07:54:48,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.98s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-12-02 07:54:53,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-12-02 07:54:58,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-12-02 07:55:02,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-12-02 07:55:06,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-12-02 07:55:07,250 INFO L124 PetriNetUnfolderBase]: 637/1217 cut-off events.
[2024-12-02 07:55:07,250 INFO L125 PetriNetUnfolderBase]: For 23864/23864 co-relation queries the response was YES.
[2024-12-02 07:55:07,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9223 conditions, 1217 events. 637/1217 cut-off events. For 23864/23864 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7019 event pairs, 24 based on Foata normal form. 4/1201 useless extension candidates. Maximal degree in co-relation 9131. Up to 824 conditions per place.
[2024-12-02 07:55:07,258 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 267 selfloop transitions, 109 changer transitions 22/399 dead transitions.
[2024-12-02 07:55:07,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 399 transitions, 5577 flow
[2024-12-02 07:55:07,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states.
[2024-12-02 07:55:07,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states.
[2024-12-02 07:55:07,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 261 transitions.
[2024-12-02 07:55:07,260 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394
[2024-12-02 07:55:07,260 INFO L175 Difference]: Start difference. First operand has 267 places, 286 transitions, 3424 flow. Second operand 33 states and 261 transitions.
[2024-12-02 07:55:07,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 399 transitions, 5577 flow
[2024-12-02 07:55:07,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 399 transitions, 5306 flow, removed 99 selfloop flow, removed 18 redundant places.
[2024-12-02 07:55:07,385 INFO L231 Difference]: Finished difference. Result has 291 places, 322 transitions, 4305 flow
[2024-12-02 07:55:07,385 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=3167, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=4305, PETRI_PLACES=291, PETRI_TRANSITIONS=322}
[2024-12-02 07:55:07,385 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 271 predicate places.
[2024-12-02 07:55:07,385 INFO L471 AbstractCegarLoop]: Abstraction has has 291 places, 322 transitions, 4305 flow
[2024-12-02 07:55:07,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 21 states have internal predecessors, (99), 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)
[2024-12-02 07:55:07,386 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 07:55:07,386 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:55:07,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0
[2024-12-02 07:55:07,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26
[2024-12-02 07:55:07,586 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-12-02 07:55:07,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:55:07,587 INFO L85 PathProgramCache]: Analyzing trace with hash 721877471, now seen corresponding path program 5 times
[2024-12-02 07:55:07,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:55:07,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369062588]
[2024-12-02 07:55:07,587 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-12-02 07:55:07,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:55:07,595 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 07:55:07,595 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:55:07,700 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:55:07,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:55:07,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369062588]
[2024-12-02 07:55:07,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369062588] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:55:07,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079619538]
[2024-12-02 07:55:07,700 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-12-02 07:55:07,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:55:07,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:55:07,702 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:55:07,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process
[2024-12-02 07:55:07,747 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 07:55:07,747 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:55:07,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 24 conjuncts are in the unsatisfiable core
[2024-12-02 07:55:07,749 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:55:07,952 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:55:07,952 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:55:08,216 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:55:08,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079619538] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:55:08,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 07:55:08,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 20
[2024-12-02 07:55:08,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978625818]
[2024-12-02 07:55:08,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:55:08,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2024-12-02 07:55:08,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:55:08,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2024-12-02 07:55:08,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420
[2024-12-02 07:55:08,217 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18
[2024-12-02 07:55:08,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 322 transitions, 4305 flow. Second operand has 21 states, 21 states have (on average 4.761904761904762) internal successors, (100), 21 states have internal predecessors, (100), 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)
[2024-12-02 07:55:08,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 07:55:08,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18
[2024-12-02 07:55:08,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 07:55:09,688 INFO L124 PetriNetUnfolderBase]: 720/1351 cut-off events.
[2024-12-02 07:55:09,688 INFO L125 PetriNetUnfolderBase]: For 29727/29727 co-relation queries the response was YES.
[2024-12-02 07:55:09,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10849 conditions, 1351 events. 720/1351 cut-off events. For 29727/29727 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 7920 event pairs, 10 based on Foata normal form. 3/1334 useless extension candidates. Maximal degree in co-relation 10745. Up to 496 conditions per place.
[2024-12-02 07:55:09,697 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 183 selfloop transitions, 238 changer transitions 12/434 dead transitions.
[2024-12-02 07:55:09,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 434 transitions, 6561 flow
[2024-12-02 07:55:09,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states.
[2024-12-02 07:55:09,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states.
[2024-12-02 07:55:09,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 225 transitions.
[2024-12-02 07:55:09,699 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43103448275862066
[2024-12-02 07:55:09,699 INFO L175 Difference]: Start difference. First operand has 291 places, 322 transitions, 4305 flow. Second operand 29 states and 225 transitions.
[2024-12-02 07:55:09,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 434 transitions, 6561 flow
[2024-12-02 07:55:09,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 434 transitions, 5743 flow, removed 385 selfloop flow, removed 13 redundant places.
[2024-12-02 07:55:09,879 INFO L231 Difference]: Finished difference. Result has 307 places, 364 transitions, 5254 flow
[2024-12-02 07:55:09,879 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=3633, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=5254, PETRI_PLACES=307, PETRI_TRANSITIONS=364}
[2024-12-02 07:55:09,880 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 287 predicate places.
[2024-12-02 07:55:09,880 INFO L471 AbstractCegarLoop]: Abstraction has has 307 places, 364 transitions, 5254 flow
[2024-12-02 07:55:09,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.761904761904762) internal successors, (100), 21 states have internal predecessors, (100), 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)
[2024-12-02 07:55:09,880 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 07:55:09,880 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:55:09,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0
[2024-12-02 07:55:10,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27
[2024-12-02 07:55:10,080 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-12-02 07:55:10,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:55:10,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1224215653, now seen corresponding path program 6 times
[2024-12-02 07:55:10,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:55:10,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795697859]
[2024-12-02 07:55:10,081 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2024-12-02 07:55:10,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:55:10,088 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s)
[2024-12-02 07:55:10,088 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:55:10,306 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:55:10,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:55:10,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795697859]
[2024-12-02 07:55:10,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795697859] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:55:10,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336255624]
[2024-12-02 07:55:10,306 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2024-12-02 07:55:10,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:55:10,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:55:10,308 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:55:10,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process
[2024-12-02 07:55:10,351 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s)
[2024-12-02 07:55:10,351 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:55:10,352 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 24 conjuncts are in the unsatisfiable core
[2024-12-02 07:55:10,353 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:55:10,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:55:10,576 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:55:10,850 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:55:10,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336255624] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:55:10,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 07:55:10,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 20
[2024-12-02 07:55:10,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764082616]
[2024-12-02 07:55:10,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:55:10,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2024-12-02 07:55:10,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:55:10,851 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2024-12-02 07:55:10,851 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420
[2024-12-02 07:55:10,851 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18
[2024-12-02 07:55:10,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 364 transitions, 5254 flow. Second operand has 21 states, 21 states have (on average 4.761904761904762) internal successors, (100), 21 states have internal predecessors, (100), 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)
[2024-12-02 07:55:10,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 07:55:10,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18
[2024-12-02 07:55:10,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 07:55:12,731 INFO L124 PetriNetUnfolderBase]: 782/1478 cut-off events.
[2024-12-02 07:55:12,732 INFO L125 PetriNetUnfolderBase]: For 32863/32863 co-relation queries the response was YES.
[2024-12-02 07:55:12,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12597 conditions, 1478 events. 782/1478 cut-off events. For 32863/32863 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 8880 event pairs, 15 based on Foata normal form. 4/1482 useless extension candidates. Maximal degree in co-relation 12433. Up to 690 conditions per place.
[2024-12-02 07:55:12,743 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 242 selfloop transitions, 213 changer transitions 13/469 dead transitions.
[2024-12-02 07:55:12,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 469 transitions, 7858 flow
[2024-12-02 07:55:12,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states.
[2024-12-02 07:55:12,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states.
[2024-12-02 07:55:12,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 258 transitions.
[2024-12-02 07:55:12,745 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436
[2024-12-02 07:55:12,745 INFO L175 Difference]: Start difference. First operand has 307 places, 364 transitions, 5254 flow. Second operand 33 states and 258 transitions.
[2024-12-02 07:55:12,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 469 transitions, 7858 flow
[2024-12-02 07:55:12,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 469 transitions, 7359 flow, removed 177 selfloop flow, removed 21 redundant places.
[2024-12-02 07:55:12,991 INFO L231 Difference]: Finished difference. Result has 321 places, 398 transitions, 6447 flow
[2024-12-02 07:55:12,991 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=4881, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=6447, PETRI_PLACES=321, PETRI_TRANSITIONS=398}
[2024-12-02 07:55:12,992 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 301 predicate places.
[2024-12-02 07:55:12,992 INFO L471 AbstractCegarLoop]: Abstraction has has 321 places, 398 transitions, 6447 flow
[2024-12-02 07:55:12,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.761904761904762) internal successors, (100), 21 states have internal predecessors, (100), 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)
[2024-12-02 07:55:12,992 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 07:55:12,992 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:55:12,999 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0
[2024-12-02 07:55:13,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28
[2024-12-02 07:55:13,192 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-12-02 07:55:13,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:55:13,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1337541787, now seen corresponding path program 7 times
[2024-12-02 07:55:13,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:55:13,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034374247]
[2024-12-02 07:55:13,193 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2024-12-02 07:55:13,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:55:13,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:55:13,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:55:13,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:55:13,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034374247]
[2024-12-02 07:55:13,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034374247] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:55:13,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542204419]
[2024-12-02 07:55:13,379 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2024-12-02 07:55:13,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:55:13,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:55:13,381 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:55:13,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process
[2024-12-02 07:55:13,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-12-02 07:55:13,436 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 16 conjuncts are in the unsatisfiable core
[2024-12-02 07:55:13,437 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:55:13,589 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:55:13,589 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:55:13,784 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:55:13,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542204419] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:55:13,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 07:55:13,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 15
[2024-12-02 07:55:13,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643332235]
[2024-12-02 07:55:13,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:55:13,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2024-12-02 07:55:13,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:55:13,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2024-12-02 07:55:13,786 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240
[2024-12-02 07:55:13,786 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18
[2024-12-02 07:55:13,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 398 transitions, 6447 flow. Second operand has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 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)
[2024-12-02 07:55:13,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 07:55:13,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18
[2024-12-02 07:55:13,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 07:55:14,522 INFO L124 PetriNetUnfolderBase]: 779/1493 cut-off events.
[2024-12-02 07:55:14,522 INFO L125 PetriNetUnfolderBase]: For 29502/29502 co-relation queries the response was YES.
[2024-12-02 07:55:14,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12761 conditions, 1493 events. 779/1493 cut-off events. For 29502/29502 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 9092 event pairs, 27 based on Foata normal form. 5/1498 useless extension candidates. Maximal degree in co-relation 12588. Up to 1257 conditions per place.
[2024-12-02 07:55:14,536 INFO L140 encePairwiseOnDemand]: 12/18 looper letters, 352 selfloop transitions, 63 changer transitions 24/440 dead transitions.
[2024-12-02 07:55:14,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 440 transitions, 7912 flow
[2024-12-02 07:55:14,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2024-12-02 07:55:14,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states.
[2024-12-02 07:55:14,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 122 transitions.
[2024-12-02 07:55:14,537 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45185185185185184
[2024-12-02 07:55:14,537 INFO L175 Difference]: Start difference. First operand has 321 places, 398 transitions, 6447 flow. Second operand 15 states and 122 transitions.
[2024-12-02 07:55:14,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 440 transitions, 7912 flow
[2024-12-02 07:55:14,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 440 transitions, 6818 flow, removed 490 selfloop flow, removed 23 redundant places.
[2024-12-02 07:55:14,795 INFO L231 Difference]: Finished difference. Result has 314 places, 396 transitions, 5638 flow
[2024-12-02 07:55:14,796 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=5439, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5638, PETRI_PLACES=314, PETRI_TRANSITIONS=396}
[2024-12-02 07:55:14,796 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 294 predicate places.
[2024-12-02 07:55:14,796 INFO L471 AbstractCegarLoop]: Abstraction has has 314 places, 396 transitions, 5638 flow
[2024-12-02 07:55:14,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 16 states have internal predecessors, (85), 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)
[2024-12-02 07:55:14,796 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 07:55:14,796 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:55:14,805 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0
[2024-12-02 07:55:14,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:55:14,997 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-12-02 07:55:14,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:55:14,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1331910653, now seen corresponding path program 8 times
[2024-12-02 07:55:14,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:55:14,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696768541]
[2024-12-02 07:55:14,998 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 07:55:14,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:55:15,010 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 07:55:15,010 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:55:15,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:55:15,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:55:15,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696768541]
[2024-12-02 07:55:15,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696768541] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:55:15,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917858631]
[2024-12-02 07:55:15,195 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 07:55:15,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:55:15,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:55:15,197 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:55:15,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process
[2024-12-02 07:55:15,252 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 07:55:15,252 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:55:15,253 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 24 conjuncts are in the unsatisfiable core
[2024-12-02 07:55:15,254 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:55:15,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:55:15,526 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:55:15,851 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:55:15,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917858631] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:55:15,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 07:55:15,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 20
[2024-12-02 07:55:15,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205254247]
[2024-12-02 07:55:15,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:55:15,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2024-12-02 07:55:15,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:55:15,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2024-12-02 07:55:15,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420
[2024-12-02 07:55:15,852 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18
[2024-12-02 07:55:15,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 396 transitions, 5638 flow. Second operand has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 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)
[2024-12-02 07:55:15,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 07:55:15,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18
[2024-12-02 07:55:15,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 07:55:17,068 INFO L124 PetriNetUnfolderBase]: 768/1460 cut-off events.
[2024-12-02 07:55:17,068 INFO L125 PetriNetUnfolderBase]: For 20518/20518 co-relation queries the response was YES.
[2024-12-02 07:55:17,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11224 conditions, 1460 events. 768/1460 cut-off events. For 20518/20518 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8790 event pairs, 16 based on Foata normal form. 3/1463 useless extension candidates. Maximal degree in co-relation 11052. Up to 779 conditions per place.
[2024-12-02 07:55:17,077 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 246 selfloop transitions, 194 changer transitions 9/450 dead transitions.
[2024-12-02 07:55:17,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 450 transitions, 6748 flow
[2024-12-02 07:55:17,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2024-12-02 07:55:17,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2024-12-02 07:55:17,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 208 transitions.
[2024-12-02 07:55:17,079 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4126984126984127
[2024-12-02 07:55:17,079 INFO L175 Difference]: Start difference. First operand has 314 places, 396 transitions, 5638 flow. Second operand 28 states and 208 transitions.
[2024-12-02 07:55:17,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 450 transitions, 6748 flow
[2024-12-02 07:55:17,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 450 transitions, 6610 flow, removed 21 selfloop flow, removed 12 redundant places.
[2024-12-02 07:55:17,249 INFO L231 Difference]: Finished difference. Result has 327 places, 395 transitions, 5896 flow
[2024-12-02 07:55:17,249 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=5506, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=5896, PETRI_PLACES=327, PETRI_TRANSITIONS=395}
[2024-12-02 07:55:17,249 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 307 predicate places.
[2024-12-02 07:55:17,249 INFO L471 AbstractCegarLoop]: Abstraction has has 327 places, 395 transitions, 5896 flow
[2024-12-02 07:55:17,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.809523809523809) internal successors, (101), 21 states have internal predecessors, (101), 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)
[2024-12-02 07:55:17,250 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 07:55:17,250 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:55:17,256 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0
[2024-12-02 07:55:17,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:55:17,450 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-12-02 07:55:17,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:55:17,451 INFO L85 PathProgramCache]: Analyzing trace with hash -362570560, now seen corresponding path program 20 times
[2024-12-02 07:55:17,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:55:17,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784115454]
[2024-12-02 07:55:17,451 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 07:55:17,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:55:17,463 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 07:55:17,463 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:55:17,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:55:17,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:55:17,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784115454]
[2024-12-02 07:55:17,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784115454] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:55:17,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060833393]
[2024-12-02 07:55:17,935 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-12-02 07:55:17,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:55:17,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:55:17,937 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:55:17,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process
[2024-12-02 07:55:18,062 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 07:55:18,062 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:55:18,063 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 25 conjuncts are in the unsatisfiable core
[2024-12-02 07:55:18,063 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:55:18,451 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:55:18,451 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:55:23,234 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:55:23,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060833393] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:55:23,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 07:55:23,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19
[2024-12-02 07:55:23,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242051593]
[2024-12-02 07:55:23,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:55:23,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states
[2024-12-02 07:55:23,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:55:23,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2024-12-02 07:55:23,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=303, Unknown=1, NotChecked=0, Total=380
[2024-12-02 07:55:23,235 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18
[2024-12-02 07:55:23,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 395 transitions, 5896 flow. Second operand has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 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)
[2024-12-02 07:55:23,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 07:55:23,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18
[2024-12-02 07:55:23,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 07:55:27,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-12-02 07:55:32,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-12-02 07:55:37,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-12-02 07:55:41,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-12-02 07:55:46,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-12-02 07:55:51,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-12-02 07:55:51,777 INFO L124 PetriNetUnfolderBase]: 794/1505 cut-off events.
[2024-12-02 07:55:51,777 INFO L125 PetriNetUnfolderBase]: For 22984/22984 co-relation queries the response was YES.
[2024-12-02 07:55:51,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12063 conditions, 1505 events. 794/1505 cut-off events. For 22984/22984 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9095 event pairs, 40 based on Foata normal form. 3/1508 useless extension candidates. Maximal degree in co-relation 11908. Up to 1286 conditions per place.
[2024-12-02 07:55:51,790 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 350 selfloop transitions, 92 changer transitions 11/454 dead transitions.
[2024-12-02 07:55:51,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 454 transitions, 7241 flow
[2024-12-02 07:55:51,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states.
[2024-12-02 07:55:51,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2024-12-02 07:55:51,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 197 transitions.
[2024-12-02 07:55:51,791 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42094017094017094
[2024-12-02 07:55:51,791 INFO L175 Difference]: Start difference. First operand has 327 places, 395 transitions, 5896 flow. Second operand 26 states and 197 transitions.
[2024-12-02 07:55:51,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 454 transitions, 7241 flow
[2024-12-02 07:55:51,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 454 transitions, 6985 flow, removed 2 selfloop flow, removed 24 redundant places.
[2024-12-02 07:55:51,993 INFO L231 Difference]: Finished difference. Result has 335 places, 407 transitions, 6153 flow
[2024-12-02 07:55:51,993 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=5644, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=6153, PETRI_PLACES=335, PETRI_TRANSITIONS=407}
[2024-12-02 07:55:51,993 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 315 predicate places.
[2024-12-02 07:55:51,993 INFO L471 AbstractCegarLoop]: Abstraction has has 335 places, 407 transitions, 6153 flow
[2024-12-02 07:55:51,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 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)
[2024-12-02 07:55:51,994 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 07:55:51,994 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:55:52,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0
[2024-12-02 07:55:52,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31
[2024-12-02 07:55:52,194 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-12-02 07:55:52,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:55:52,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1150221120, now seen corresponding path program 21 times
[2024-12-02 07:55:52,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:55:52,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943703467]
[2024-12-02 07:55:52,195 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-12-02 07:55:52,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:55:52,206 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-12-02 07:55:52,206 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:55:52,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:55:52,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:55:52,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943703467]
[2024-12-02 07:55:52,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943703467] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:55:52,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152327472]
[2024-12-02 07:55:52,552 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-12-02 07:55:52,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:55:52,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:55:52,554 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:55:52,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process
[2024-12-02 07:55:52,611 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-12-02 07:55:52,611 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:55:52,612 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 25 conjuncts are in the unsatisfiable core
[2024-12-02 07:55:52,612 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:55:52,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:55:52,935 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:55:53,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:55:53,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152327472] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:55:53,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 07:55:53,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19
[2024-12-02 07:55:53,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394655987]
[2024-12-02 07:55:53,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:55:53,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states
[2024-12-02 07:55:53,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:55:53,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2024-12-02 07:55:53,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380
[2024-12-02 07:55:53,648 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18
[2024-12-02 07:55:53,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 407 transitions, 6153 flow. Second operand has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 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)
[2024-12-02 07:55:53,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 07:55:53,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18
[2024-12-02 07:55:53,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 07:55:57,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-12-02 07:56:02,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-12-02 07:56:06,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-12-02 07:56:11,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-12-02 07:56:15,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-12-02 07:56:16,037 INFO L124 PetriNetUnfolderBase]: 796/1511 cut-off events.
[2024-12-02 07:56:16,037 INFO L125 PetriNetUnfolderBase]: For 24022/24022 co-relation queries the response was YES.
[2024-12-02 07:56:16,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12258 conditions, 1511 events. 796/1511 cut-off events. For 24022/24022 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 9142 event pairs, 47 based on Foata normal form. 2/1513 useless extension candidates. Maximal degree in co-relation 12146. Up to 1331 conditions per place.
[2024-12-02 07:56:16,049 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 349 selfloop transitions, 92 changer transitions 7/449 dead transitions.
[2024-12-02 07:56:16,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 449 transitions, 7383 flow
[2024-12-02 07:56:16,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states.
[2024-12-02 07:56:16,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states.
[2024-12-02 07:56:16,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 188 transitions.
[2024-12-02 07:56:16,051 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4177777777777778
[2024-12-02 07:56:16,051 INFO L175 Difference]: Start difference. First operand has 335 places, 407 transitions, 6153 flow. Second operand 25 states and 188 transitions.
[2024-12-02 07:56:16,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 449 transitions, 7383 flow
[2024-12-02 07:56:16,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 449 transitions, 7228 flow, removed 44 selfloop flow, removed 19 redundant places.
[2024-12-02 07:56:16,276 INFO L231 Difference]: Finished difference. Result has 343 places, 411 transitions, 6344 flow
[2024-12-02 07:56:16,277 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=5998, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=6344, PETRI_PLACES=343, PETRI_TRANSITIONS=411}
[2024-12-02 07:56:16,277 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 323 predicate places.
[2024-12-02 07:56:16,277 INFO L471 AbstractCegarLoop]: Abstraction has has 343 places, 411 transitions, 6344 flow
[2024-12-02 07:56:16,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 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)
[2024-12-02 07:56:16,277 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 07:56:16,278 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:56:16,284 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0
[2024-12-02 07:56:16,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32
[2024-12-02 07:56:16,478 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-12-02 07:56:16,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:56:16,479 INFO L85 PathProgramCache]: Analyzing trace with hash 741595579, now seen corresponding path program 22 times
[2024-12-02 07:56:16,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:56:16,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097970578]
[2024-12-02 07:56:16,479 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-12-02 07:56:16,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:56:16,490 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-12-02 07:56:16,490 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:56:17,424 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:56:17,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:56:17,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097970578]
[2024-12-02 07:56:17,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097970578] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:56:17,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221601014]
[2024-12-02 07:56:17,425 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-12-02 07:56:17,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:56:17,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:56:17,427 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:56:17,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process
[2024-12-02 07:56:17,523 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-12-02 07:56:17,523 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:56:17,524 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 25 conjuncts are in the unsatisfiable core
[2024-12-02 07:56:17,525 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:56:17,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:56:17,909 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:56:21,391 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:56:21,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221601014] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:56:21,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 07:56:21,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21
[2024-12-02 07:56:21,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522384156]
[2024-12-02 07:56:21,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:56:21,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2024-12-02 07:56:21,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:56:21,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2024-12-02 07:56:21,392 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462
[2024-12-02 07:56:21,393 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18
[2024-12-02 07:56:21,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 411 transitions, 6344 flow. Second operand has 22 states, 22 states have (on average 4.681818181818182) internal successors, (103), 22 states have internal predecessors, (103), 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)
[2024-12-02 07:56:21,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 07:56:21,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18
[2024-12-02 07:56:21,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 07:56:23,627 INFO L124 PetriNetUnfolderBase]: 804/1527 cut-off events.
[2024-12-02 07:56:23,627 INFO L125 PetriNetUnfolderBase]: For 24924/24924 co-relation queries the response was YES.
[2024-12-02 07:56:23,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12553 conditions, 1527 events. 804/1527 cut-off events. For 24924/24924 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 9292 event pairs, 26 based on Foata normal form. 4/1531 useless extension candidates. Maximal degree in co-relation 12360. Up to 1208 conditions per place.
[2024-12-02 07:56:23,640 INFO L140 encePairwiseOnDemand]: 10/18 looper letters, 339 selfloop transitions, 119 changer transitions 12/471 dead transitions.
[2024-12-02 07:56:23,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 471 transitions, 7660 flow
[2024-12-02 07:56:23,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2024-12-02 07:56:23,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2024-12-02 07:56:23,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 213 transitions.
[2024-12-02 07:56:23,642 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4226190476190476
[2024-12-02 07:56:23,642 INFO L175 Difference]: Start difference. First operand has 343 places, 411 transitions, 6344 flow. Second operand 28 states and 213 transitions.
[2024-12-02 07:56:23,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 471 transitions, 7660 flow
[2024-12-02 07:56:23,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 471 transitions, 7461 flow, removed 48 selfloop flow, removed 21 redundant places.
[2024-12-02 07:56:23,919 INFO L231 Difference]: Finished difference. Result has 351 places, 415 transitions, 6525 flow
[2024-12-02 07:56:23,919 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=6140, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=6525, PETRI_PLACES=351, PETRI_TRANSITIONS=415}
[2024-12-02 07:56:23,919 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 331 predicate places.
[2024-12-02 07:56:23,919 INFO L471 AbstractCegarLoop]: Abstraction has has 351 places, 415 transitions, 6525 flow
[2024-12-02 07:56:23,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.681818181818182) internal successors, (103), 22 states have internal predecessors, (103), 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)
[2024-12-02 07:56:23,920 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 07:56:23,920 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:56:23,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0
[2024-12-02 07:56:24,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33
[2024-12-02 07:56:24,120 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-12-02 07:56:24,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:56:24,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1983747978, now seen corresponding path program 4 times
[2024-12-02 07:56:24,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:56:24,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124622007]
[2024-12-02 07:56:24,121 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-12-02 07:56:24,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:56:24,130 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-12-02 07:56:24,130 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:56:24,271 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:56:24,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:56:24,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124622007]
[2024-12-02 07:56:24,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124622007] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:56:24,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943826897]
[2024-12-02 07:56:24,272 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-12-02 07:56:24,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:56:24,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:56:24,273 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:56:24,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process
[2024-12-02 07:56:24,316 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-12-02 07:56:24,316 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:56:24,317 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 16 conjuncts are in the unsatisfiable core
[2024-12-02 07:56:24,317 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:56:24,442 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:56:24,442 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 07:56:29,080 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (mod c_~x_1~0 4294967296))) (let ((.cse5 (+ .cse2 4294967296)) (.cse3 (mod c_thread1Thread1of1ForFork0_~i~0 4294967296)) (.cse4 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_341 Int) (v_y_341 Int)) (let ((.cse0 (+ .cse4 v_z_341)) (.cse1 (+ (* v_y_341 4294967296) (* 2863311531 v_z_341)))) (or (< v_z_341 0) (< 4294967295 .cse0) (< .cse1 0) (= .cse2 .cse0) (< .cse3 .cse1)))) (forall ((v_z_341 Int) (v_y_341 Int)) (let ((.cse7 (+ (* v_y_341 4294967296) (* 2863311531 v_z_341))) (.cse6 (+ .cse4 v_z_341))) (or (= .cse5 .cse6) (< .cse7 0) (< 4294967295 v_z_341) (< .cse3 .cse7) (< .cse6 4294967296)))) (forall ((v_z_341 Int) (v_y_341 Int)) (let ((.cse8 (+ .cse4 v_z_341)) (.cse9 (+ (* v_y_341 4294967296) (* 2863311531 v_z_341)))) (or (< v_z_341 0) (= .cse5 .cse8) (< .cse9 0) (= .cse2 .cse8) (< 4294967295 v_z_341) (< .cse3 .cse9))))))) is different from false
[2024-12-02 07:56:38,680 WARN L286 SmtUtils]: Spent 5.49s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-12-02 07:56:58,719 WARN L286 SmtUtils]: Spent 16.02s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-12-02 07:57:10,835 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (mod c_~x_1~0 4294967296))) (let ((.cse0 (+ .cse4 4294967296)) (.cse2 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_341 Int) (v_y_341 Int)) (let ((.cse1 (+ .cse2 v_z_341))) (or (= .cse0 .cse1) (not (= (+ (* v_y_341 4294967296) (* 2863311531 v_z_341)) 0)) (< 4294967295 v_z_341) (< .cse1 4294967296)))) (forall ((v_z_341 Int) (v_y_341 Int)) (let ((.cse3 (+ .cse2 v_z_341))) (or (< v_z_341 0) (< 4294967295 .cse3) (= .cse4 .cse3) (not (= (+ (* v_y_341 4294967296) (* 2863311531 v_z_341)) 0))))) (forall ((v_z_341 Int) (v_y_341 Int)) (let ((.cse5 (+ .cse2 v_z_341))) (or (< v_z_341 0) (= .cse0 .cse5) (= .cse4 .cse5) (not (= (+ (* v_y_341 4294967296) (* 2863311531 v_z_341)) 0)) (< 4294967295 v_z_341))))))) is different from false
[2024-12-02 07:57:18,912 WARN L286 SmtUtils]: Spent 8.05s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-12-02 07:57:38,968 WARN L286 SmtUtils]: Spent 16.04s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-12-02 07:58:15,685 WARN L286 SmtUtils]: Spent 16.03s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-12-02 07:58:31,772 WARN L286 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-12-02 07:58:52,140 WARN L286 SmtUtils]: Spent 16.02s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-12-02 07:59:06,736 WARN L286 SmtUtils]: Spent 6.55s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-12-02 07:59:26,840 WARN L286 SmtUtils]: Spent 16.04s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-12-02 07:59:34,897 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked.
[2024-12-02 07:59:34,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943826897] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 07:59:34,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 07:59:34,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16
[2024-12-02 07:59:34,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809568555]
[2024-12-02 07:59:34,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 07:59:34,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2024-12-02 07:59:34,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 07:59:34,898 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2024-12-02 07:59:34,898 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=157, Unknown=2, NotChecked=54, Total=272
[2024-12-02 07:59:34,898 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18
[2024-12-02 07:59:34,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 415 transitions, 6525 flow. Second operand has 17 states, 17 states have (on average 5.176470588235294) internal successors, (88), 17 states have internal predecessors, (88), 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)
[2024-12-02 07:59:34,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 07:59:34,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18
[2024-12-02 07:59:34,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 07:59:39,050 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (mod c_~x_1~0 4294967296))) (let ((.cse0 (+ .cse4 4294967296)) (.cse2 (mod c_~x_2~0 4294967296))) (and (= c_~x_2~0 0) (= c_~x_1~0 0) (forall ((v_z_341 Int) (v_y_341 Int)) (let ((.cse1 (+ .cse2 v_z_341))) (or (= .cse0 .cse1) (not (= (+ (* v_y_341 4294967296) (* 2863311531 v_z_341)) 0)) (< 4294967295 v_z_341) (< .cse1 4294967296)))) (forall ((v_z_341 Int) (v_y_341 Int)) (let ((.cse3 (+ .cse2 v_z_341))) (or (< v_z_341 0) (< 4294967295 .cse3) (= .cse4 .cse3) (not (= (+ (* v_y_341 4294967296) (* 2863311531 v_z_341)) 0))))) (forall ((v_z_341 Int) (v_y_341 Int)) (let ((.cse5 (+ .cse2 v_z_341))) (or (< v_z_341 0) (= .cse0 .cse5) (= .cse4 .cse5) (not (= (+ (* v_y_341 4294967296) (* 2863311531 v_z_341)) 0)) (< 4294967295 v_z_341))))))) is different from false
[2024-12-02 07:59:43,124 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (mod c_~x_1~0 4294967296))) (let ((.cse5 (+ .cse2 4294967296)) (.cse3 (mod c_thread1Thread1of1ForFork0_~i~0 4294967296)) (.cse4 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_341 Int) (v_y_341 Int)) (let ((.cse0 (+ .cse4 v_z_341)) (.cse1 (+ (* v_y_341 4294967296) (* 2863311531 v_z_341)))) (or (< v_z_341 0) (< 4294967295 .cse0) (< .cse1 0) (= .cse2 .cse0) (< .cse3 .cse1)))) (<= 0 (div c_thread1Thread1of1ForFork0_~i~0 4294967296)) (forall ((v_z_341 Int) (v_y_341 Int)) (let ((.cse7 (+ (* v_y_341 4294967296) (* 2863311531 v_z_341))) (.cse6 (+ .cse4 v_z_341))) (or (= .cse5 .cse6) (< .cse7 0) (< 4294967295 v_z_341) (< .cse3 .cse7) (< .cse6 4294967296)))) (forall ((v_z_341 Int) (v_y_341 Int)) (let ((.cse8 (+ .cse4 v_z_341)) (.cse9 (+ (* v_y_341 4294967296) (* 2863311531 v_z_341)))) (or (< v_z_341 0) (= .cse5 .cse8) (< .cse9 0) (= .cse2 .cse8) (< 4294967295 v_z_341) (< .cse3 .cse9)))) (= c_~x_1~0 0) (<= (+ c_~x_2~0 (* 3 c_thread1Thread1of1ForFork0_~i~0)) 0) (<= 0 c_~x_2~0)))) is different from false
[2024-12-02 07:59:43,955 INFO L124 PetriNetUnfolderBase]: 837/1589 cut-off events.
[2024-12-02 07:59:43,955 INFO L125 PetriNetUnfolderBase]: For 25761/25761 co-relation queries the response was YES.
[2024-12-02 07:59:43,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13565 conditions, 1589 events. 837/1589 cut-off events. For 25761/25761 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 9734 event pairs, 52 based on Foata normal form. 3/1592 useless extension candidates. Maximal degree in co-relation 13370. Up to 1499 conditions per place.
[2024-12-02 07:59:43,968 INFO L140 encePairwiseOnDemand]: 8/18 looper letters, 425 selfloop transitions, 19 changer transitions 19/464 dead transitions.
[2024-12-02 07:59:43,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 464 transitions, 8199 flow
[2024-12-02 07:59:43,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2024-12-02 07:59:43,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states.
[2024-12-02 07:59:43,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 104 transitions.
[2024-12-02 07:59:43,969 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444
[2024-12-02 07:59:43,969 INFO L175 Difference]: Start difference. First operand has 351 places, 415 transitions, 6525 flow. Second operand 13 states and 104 transitions.
[2024-12-02 07:59:43,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 464 transitions, 8199 flow
[2024-12-02 07:59:44,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 464 transitions, 7829 flow, removed 77 selfloop flow, removed 25 redundant places.
[2024-12-02 07:59:44,235 INFO L231 Difference]: Finished difference. Result has 346 places, 431 transitions, 6635 flow
[2024-12-02 07:59:44,235 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=6212, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6635, PETRI_PLACES=346, PETRI_TRANSITIONS=431}
[2024-12-02 07:59:44,236 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 326 predicate places.
[2024-12-02 07:59:44,236 INFO L471 AbstractCegarLoop]: Abstraction has has 346 places, 431 transitions, 6635 flow
[2024-12-02 07:59:44,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.176470588235294) internal successors, (88), 17 states have internal predecessors, (88), 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)
[2024-12-02 07:59:44,236 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 07:59:44,236 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 07:59:44,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0
[2024-12-02 07:59:44,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34
[2024-12-02 07:59:44,437 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-12-02 07:59:44,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 07:59:44,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1919018023, now seen corresponding path program 9 times
[2024-12-02 07:59:44,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 07:59:44,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688364155]
[2024-12-02 07:59:44,437 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-12-02 07:59:44,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 07:59:44,449 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2024-12-02 07:59:44,449 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:59:44,643 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:59:44,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 07:59:44,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688364155]
[2024-12-02 07:59:44,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688364155] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 07:59:44,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786068392]
[2024-12-02 07:59:44,644 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-12-02 07:59:44,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 07:59:44,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 07:59:44,646 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 07:59:44,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process
[2024-12-02 07:59:44,736 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2024-12-02 07:59:44,737 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 07:59:44,738 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 24 conjuncts are in the unsatisfiable core
[2024-12-02 07:59:44,738 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 07:59:44,993 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 07:59:44,993 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 08:00:18,372 WARN L286 SmtUtils]: Spent 16.04s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-12-02 08:00:38,432 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-12-02 08:01:52,772 WARN L286 SmtUtils]: Spent 36.21s on a formula simplification that was a NOOP. DAG size: 39 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)
[2024-12-02 08:02:16,856 WARN L286 SmtUtils]: Spent 16.04s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-12-02 08:02:24,873 WARN L286 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-12-02 08:02:33,869 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_~x_2~0 4294967296))) (let ((.cse2 (+ .cse1 4294967296)) (.cse3 (mod c_~x_1~0 4294967296))) (and (forall ((v_z_344 Int) (v_y_344 Int)) (let ((.cse0 (+ .cse3 v_z_344))) (or (= .cse0 .cse1) (< 4294967295 v_z_344) (= .cse0 .cse2) (not (= (+ (* v_y_344 4294967296) (* 2863311531 v_z_344)) 0)) (< v_z_344 0)))) (forall ((v_z_344 Int) (v_y_344 Int)) (let ((.cse4 (+ .cse3 v_z_344))) (or (= .cse4 .cse1) (not (= (+ (* v_y_344 4294967296) (* 2863311531 v_z_344)) 0)) (< v_z_344 0) (< 4294967295 .cse4)))) (forall ((v_z_344 Int) (v_y_344 Int)) (let ((.cse5 (+ .cse3 v_z_344))) (or (< 4294967295 v_z_344) (= .cse5 .cse2) (not (= (+ (* v_y_344 4294967296) (* 2863311531 v_z_344)) 0)) (< .cse5 4294967296))))))) is different from false
[2024-12-02 08:02:58,524 WARN L286 SmtUtils]: Spent 16.03s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-12-02 08:03:34,635 WARN L286 SmtUtils]: Spent 16.04s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-12-02 08:03:42,652 WARN L286 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-12-02 08:04:14,796 WARN L286 SmtUtils]: Spent 16.03s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-12-02 08:04:52,187 WARN L286 SmtUtils]: Spent 16.05s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-12-02 08:05:00,203 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)
[2024-12-02 08:05:08,302 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 08:05:08,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786068392] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 08:05:08,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 08:05:08,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 21
[2024-12-02 08:05:08,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757112867]
[2024-12-02 08:05:08,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 08:05:08,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2024-12-02 08:05:08,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 08:05:08,303 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2024-12-02 08:05:08,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=308, Unknown=10, NotChecked=38, Total=462
[2024-12-02 08:05:08,304 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18
[2024-12-02 08:05:08,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 431 transitions, 6635 flow. Second operand has 22 states, 22 states have (on average 4.7272727272727275) internal successors, (104), 22 states have internal predecessors, (104), 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)
[2024-12-02 08:05:08,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 08:05:08,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18
[2024-12-02 08:05:08,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-12-02 08:05:12,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]
[2024-12-02 08:05:16,432 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_~x_2~0 4294967296))) (let ((.cse2 (+ .cse1 4294967296)) (.cse3 (mod c_~x_1~0 4294967296))) (and (forall ((v_z_344 Int) (v_y_344 Int)) (let ((.cse0 (+ .cse3 v_z_344))) (or (= .cse0 .cse1) (< 4294967295 v_z_344) (= .cse0 .cse2) (not (= (+ (* v_y_344 4294967296) (* 2863311531 v_z_344)) 0)) (< v_z_344 0)))) (forall ((v_z_344 Int) (v_y_344 Int)) (let ((.cse4 (+ .cse3 v_z_344))) (or (= .cse4 .cse1) (not (= (+ (* v_y_344 4294967296) (* 2863311531 v_z_344)) 0)) (< v_z_344 0) (< 4294967295 .cse4)))) (= c_~x_2~0 0) (= c_~x_1~0 0) (forall ((v_z_344 Int) (v_y_344 Int)) (let ((.cse5 (+ .cse3 v_z_344))) (or (< 4294967295 v_z_344) (= .cse5 .cse2) (not (= (+ (* v_y_344 4294967296) (* 2863311531 v_z_344)) 0)) (< .cse5 4294967296))))))) is different from false
[2024-12-02 08:05:20,806 WARN L851 $PredicateComparison]: unable to prove that (and (= c_~x_2~0 0) (= c_thread1Thread1of1ForFork0_~i~0 0) (or (< (mod (+ 3 c_thread1Thread1of1ForFork0_~i~0) 4294967296) (+ (mod c_thread1Thread1of1ForFork0_~i~0 4294967296) 1)) (let ((.cse1 (mod c_~x_2~0 4294967296))) (let ((.cse2 (+ .cse1 4294967296)) (.cse3 (mod c_~x_1~0 4294967296))) (and (forall ((v_z_344 Int) (v_y_344 Int)) (let ((.cse0 (+ .cse3 v_z_344))) (or (= .cse0 .cse1) (< 4294967295 v_z_344) (= .cse0 .cse2) (not (= (+ (* v_y_344 4294967296) (* 2863311531 v_z_344)) 0)) (< v_z_344 0)))) (forall ((v_z_344 Int) (v_y_344 Int)) (let ((.cse4 (+ .cse3 v_z_344))) (or (= .cse4 .cse1) (not (= (+ (* v_y_344 4294967296) (* 2863311531 v_z_344)) 0)) (< v_z_344 0) (< 4294967295 .cse4)))) (forall ((v_z_344 Int) (v_y_344 Int)) (let ((.cse5 (+ .cse3 v_z_344))) (or (< 4294967295 v_z_344) (= .cse5 .cse2) (not (= (+ (* v_y_344 4294967296) (* 2863311531 v_z_344)) 0)) (< .cse5 4294967296)))))))) (= c_~x_1~0 0)) is different from false
[2024-12-02 08:05:24,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1]
[2024-12-02 08:05:29,756 WARN L851 $PredicateComparison]: unable to prove that (and (= c_~x_2~0 0) (or (< (mod (+ 3 c_thread1Thread1of1ForFork0_~i~0) 4294967296) (+ (mod c_thread1Thread1of1ForFork0_~i~0 4294967296) 1)) (let ((.cse6 (mod c_~x_2~0 4294967296))) (let ((.cse1 (+ .cse6 4294967296)) (.cse2 (mod c_thread2Thread1of1ForFork1_~i~1 4294967296)) (.cse4 (mod c_~x_1~0 4294967296))) (and (forall ((v_z_344 Int) (v_y_344 Int)) (let ((.cse0 (+ .cse4 v_z_344)) (.cse3 (+ (* v_y_344 4294967296) (* 2863311531 v_z_344)))) (or (< 4294967295 v_z_344) (= .cse0 .cse1) (< .cse0 4294967296) (< .cse2 .cse3) (< .cse3 0)))) (forall ((v_z_344 Int) (v_y_344 Int)) (let ((.cse5 (+ .cse4 v_z_344)) (.cse7 (+ (* v_y_344 4294967296) (* 2863311531 v_z_344)))) (or (= .cse5 .cse6) (< v_z_344 0) (< 4294967295 .cse5) (< .cse2 .cse7) (< .cse7 0)))) (forall ((v_z_344 Int) (v_y_344 Int)) (let ((.cse8 (+ .cse4 v_z_344)) (.cse9 (+ (* v_y_344 4294967296) (* 2863311531 v_z_344)))) (or (= .cse8 .cse6) (< 4294967295 v_z_344) (= .cse8 .cse1) (< v_z_344 0) (< .cse2 .cse9) (< .cse9 0)))))))) (= c_thread1Thread1of1ForFork0_~i~0 0) (= c_thread2Thread1of1ForFork1_~i~1 0) (= c_~x_1~0 0)) is different from false
[2024-12-02 08:05:34,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1]
[2024-12-02 08:05:38,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1]
[2024-12-02 08:05:42,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1]
[2024-12-02 08:05:46,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1]
[2024-12-02 08:05:50,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1]
[2024-12-02 08:05:54,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1]
[2024-12-02 08:05:58,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1]
[2024-12-02 08:06:02,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1]
[2024-12-02 08:06:04,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1]
[2024-12-02 08:06:09,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1]
[2024-12-02 08:06:13,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1]
[2024-12-02 08:06:17,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1]
[2024-12-02 08:06:19,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1]
[2024-12-02 08:06:22,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.78s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1]
[2024-12-02 08:06:26,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1]
[2024-12-02 08:06:35,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1]
[2024-12-02 08:06:39,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1]
[2024-12-02 08:06:44,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1]
[2024-12-02 08:06:52,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1]
[2024-12-02 08:06:56,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1]
[2024-12-02 08:07:00,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1]
[2024-12-02 08:07:04,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1]
[2024-12-02 08:07:08,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1]
[2024-12-02 08:07:12,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1]
[2024-12-02 08:07:16,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1]
[2024-12-02 08:07:20,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1]
[2024-12-02 08:07:24,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1]
[2024-12-02 08:07:28,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1]
[2024-12-02 08:07:34,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1]
[2024-12-02 08:07:38,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1]
[2024-12-02 08:07:42,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1]
[2024-12-02 08:07:46,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1]
[2024-12-02 08:07:46,894 INFO L124 PetriNetUnfolderBase]: 909/1721 cut-off events.
[2024-12-02 08:07:46,894 INFO L125 PetriNetUnfolderBase]: For 30630/30630 co-relation queries the response was YES.
[2024-12-02 08:07:46,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15382 conditions, 1721 events. 909/1721 cut-off events. For 30630/30630 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 10661 event pairs, 49 based on Foata normal form. 4/1725 useless extension candidates. Maximal degree in co-relation 15216. Up to 1492 conditions per place.
[2024-12-02 08:07:46,909 INFO L140 encePairwiseOnDemand]: 7/18 looper letters, 422 selfloop transitions, 89 changer transitions 12/524 dead transitions.
[2024-12-02 08:07:46,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 524 transitions, 9476 flow
[2024-12-02 08:07:46,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2024-12-02 08:07:46,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2024-12-02 08:07:46,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 173 transitions.
[2024-12-02 08:07:46,910 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43686868686868685
[2024-12-02 08:07:46,910 INFO L175 Difference]: Start difference. First operand has 346 places, 431 transitions, 6635 flow. Second operand 22 states and 173 transitions.
[2024-12-02 08:07:46,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 524 transitions, 9476 flow
[2024-12-02 08:07:47,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 524 transitions, 9415 flow, removed 22 selfloop flow, removed 6 redundant places.
[2024-12-02 08:07:47,188 INFO L231 Difference]: Finished difference. Result has 372 places, 483 transitions, 8399 flow
[2024-12-02 08:07:47,188 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=6579, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=8399, PETRI_PLACES=372, PETRI_TRANSITIONS=483}
[2024-12-02 08:07:47,189 INFO L279 CegarLoopForPetriNet]: 20 programPoint places, 352 predicate places.
[2024-12-02 08:07:47,189 INFO L471 AbstractCegarLoop]: Abstraction has has 372 places, 483 transitions, 8399 flow
[2024-12-02 08:07:47,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.7272727272727275) internal successors, (104), 22 states have internal predecessors, (104), 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)
[2024-12-02 08:07:47,189 INFO L198 CegarLoopForPetriNet]: Found error trace
[2024-12-02 08:07:47,189 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-12-02 08:07:47,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0
[2024-12-02 08:07:47,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35
[2024-12-02 08:07:47,390 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-12-02 08:07:47,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-12-02 08:07:47,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1902617693, now seen corresponding path program 23 times
[2024-12-02 08:07:47,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-12-02 08:07:47,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450775276]
[2024-12-02 08:07:47,391 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-12-02 08:07:47,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-12-02 08:07:47,402 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 08:07:47,402 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 08:07:48,007 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 08:07:48,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-12-02 08:07:48,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450775276]
[2024-12-02 08:07:48,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450775276] provided 0 perfect and 1 imperfect interpolant sequences
[2024-12-02 08:07:48,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203308295]
[2024-12-02 08:07:48,007 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-12-02 08:07:48,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-12-02 08:07:48,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3
[2024-12-02 08:07:48,009 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-12-02 08:07:48,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196187e6-60d9-4f72-8e55-37de894ac9f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process
[2024-12-02 08:07:48,067 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-12-02 08:07:48,067 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-12-02 08:07:48,068 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 25 conjuncts are in the unsatisfiable core
[2024-12-02 08:07:48,069 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2024-12-02 08:07:49,296 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-12-02 08:07:49,296 INFO L312 TraceCheckSpWp]: Computing backward predicates...
[2024-12-02 08:07:54,155 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (mod c_~x_1~0 4294967296))) (let ((.cse1 (mod (+ c_thread2Thread1of1ForFork1_~i~1 1) 4294967296)) (.cse4 (+ .cse0 (mod (+ 2 c_thread2Thread1of1ForFork1_~i~1) 4294967296))) (.cse2 (+ (mod c_thread1Thread1of1ForFork0_~i~0 4294967296) 1)) (.cse3 (mod (+ c_thread1Thread1of1ForFork0_~i~0 1) 4294967296))) (and (forall ((v_z_363 Int)) (or (< (mod (+ c_~x_2~0 (* 2 v_z_363)) 4294967296) (+ .cse0 .cse1 2)) (< v_z_363 .cse2) (< .cse3 v_z_363))) (forall ((v_z_363 Int)) (let ((.cse5 (mod (+ c_~x_2~0 (* 2 v_z_363)) 4294967296))) (or (< .cse4 (+ .cse5 1)) (< (+ .cse5 4294967294) (+ .cse0 .cse1)) (< v_z_363 .cse2) (< .cse3 v_z_363)))) (forall ((v_z_363 Int)) (or (< .cse4 (+ (mod (+ c_~x_2~0 (* 2 v_z_363)) 4294967296) 4294967297)) (< v_z_363 .cse2) (< .cse3 v_z_363)))))) is different from false
[2024-12-02 08:07:58,225 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (mod c_~x_1~0 4294967296)) (.cse1 (+ (mod c_thread1Thread1of1ForFork0_~i~0 4294967296) 1)) (.cse2 (mod (+ c_thread1Thread1of1ForFork0_~i~0 1) 4294967296))) (and (forall ((v_z_363 Int)) (or (< .cse0 (+ (mod (+ c_~x_2~0 (* 2 v_z_363)) 4294967296) 4294967295)) (< v_z_363 .cse1) (< .cse2 v_z_363))) (forall ((v_z_363 Int)) (or (< (mod (+ c_~x_2~0 (* 2 v_z_363)) 4294967296) (+ .cse0 3)) (< v_z_363 .cse1) (< .cse2 v_z_363))) (forall ((v_z_363 Int)) (let ((.cse3 (mod (+ c_~x_2~0 (* 2 v_z_363)) 4294967296))) (or (< (+ .cse0 1) .cse3) (< (+ .cse3 4294967293) .cse0) (< v_z_363 .cse1) (< .cse2 v_z_363)))))) is different from false
[2024-12-02 08:07:58,292 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked.
[2024-12-02 08:07:58,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203308295] provided 0 perfect and 2 imperfect interpolant sequences
[2024-12-02 08:07:58,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-12-02 08:07:58,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20
[2024-12-02 08:07:58,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245911783]
[2024-12-02 08:07:58,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-12-02 08:07:58,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2024-12-02 08:07:58,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-12-02 08:07:58,293 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2024-12-02 08:07:58,293 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=273, Unknown=2, NotChecked=70, Total=420
[2024-12-02 08:07:58,293 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 18
[2024-12-02 08:07:58,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 483 transitions, 8399 flow. Second operand has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 21 states have internal predecessors, (99), 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)
[2024-12-02 08:07:58,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-12-02 08:07:58,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 18
[2024-12-02 08:07:58,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand