./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 a0165632
Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/mult-comm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX --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 0.2.5-dev-a016563
[2024-11-08 18:06:35,514 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2024-11-08 18:06:35,615 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-11-08 18:06:35,625 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2024-11-08 18:06:35,626 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-08 18:06:35,680 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-08 18:06:35,683 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-08 18:06:35,684 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-08 18:06:35,685 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-08 18:06:35,686 INFO L153 SettingsManager]: * Use memory slicer=true
[2024-11-08 18:06:35,687 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-08 18:06:35,688 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-08 18:06:35,688 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-08 18:06:35,692 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2024-11-08 18:06:35,692 INFO L153 SettingsManager]: * Use SBE=true
[2024-11-08 18:06:35,693 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-08 18:06:35,693 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2024-11-08 18:06:35,694 INFO L153 SettingsManager]: * sizeof long=4
[2024-11-08 18:06:35,694 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2024-11-08 18:06:35,694 INFO L153 SettingsManager]: * sizeof POINTER=4
[2024-11-08 18:06:35,695 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2024-11-08 18:06:35,696 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2024-11-08 18:06:35,696 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-08 18:06:35,697 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2024-11-08 18:06:35,697 INFO L153 SettingsManager]: * Allow undefined functions=false
[2024-11-08 18:06:35,697 INFO L153 SettingsManager]: * sizeof long double=12
[2024-11-08 18:06:35,698 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2024-11-08 18:06:35,698 INFO L153 SettingsManager]: * Use constant arrays=true
[2024-11-08 18:06:35,699 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-08 18:06:35,699 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2024-11-08 18:06:35,700 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true
[2024-11-08 18:06:35,700 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2024-11-08 18:06:35,700 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 18:06:35,701 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-08 18:06:35,701 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2024-11-08 18:06:35,702 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-08 18:06:35,702 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2024-11-08 18:06:35,702 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-08 18:06:35,703 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-08 18:06:35,703 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-08 18:06:35,704 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2024-11-08 18:06:35,704 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-08 18:06:35,705 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de93f11842753a9f5cde98724d1851736862f745073786263bfd177abe6c2376
[2024-11-08 18:06:36,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-08 18:06:36,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-08 18:06:36,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-08 18:06:36,114 INFO L270 PluginConnector]: Initializing CDTParser...
[2024-11-08 18:06:36,115 INFO L274 PluginConnector]: CDTParser initialized
[2024-11-08 18:06:36,116 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/weaver/mult-comm.wvr.c
Unable to find full path for "g++"
[2024-11-08 18:06:38,319 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2024-11-08 18:06:38,654 INFO L384 CDTParser]: Found 1 translation units.
[2024-11-08 18:06:38,654 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/sv-benchmarks/c/weaver/mult-comm.wvr.c
[2024-11-08 18:06:38,669 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/data/40c913c46/f632d79b02b141f9b70341bab9fc3c82/FLAGdd23ecee6
[2024-11-08 18:06:38,696 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/data/40c913c46/f632d79b02b141f9b70341bab9fc3c82
[2024-11-08 18:06:38,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-08 18:06:38,703 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-08 18:06:38,704 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-08 18:06:38,706 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-08 18:06:38,712 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-08 18:06:38,715 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:06:38" (1/1) ...
[2024-11-08 18:06:38,719 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40ab16b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:06:38, skipping insertion in model container
[2024-11-08 18:06:38,719 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:06:38" (1/1) ...
[2024-11-08 18:06:38,750 INFO L175 MainTranslator]: Built tables and reachable declarations
[2024-11-08 18:06:39,037 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_83bed86b-b132-4940-bb64-4eea2f31db01/sv-benchmarks/c/weaver/mult-comm.wvr.c[1936,1949]
[2024-11-08 18:06:39,042 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-08 18:06:39,053 INFO L200 MainTranslator]: Completed pre-run
[2024-11-08 18:06:39,081 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_83bed86b-b132-4940-bb64-4eea2f31db01/sv-benchmarks/c/weaver/mult-comm.wvr.c[1936,1949]
[2024-11-08 18:06:39,082 INFO L210 PostProcessor]: Analyzing one entry point: main
[2024-11-08 18:06:39,106 INFO L204 MainTranslator]: Completed translation
[2024-11-08 18:06:39,107 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:06:39 WrapperNode
[2024-11-08 18:06:39,107 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-08 18:06:39,108 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-08 18:06:39,109 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-08 18:06:39,109 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-08 18:06:39,117 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:06:39" (1/1) ...
[2024-11-08 18:06:39,126 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:06:39" (1/1) ...
[2024-11-08 18:06:39,141 INFO L138 Inliner]: procedures = 20, calls = 9, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41
[2024-11-08 18:06:39,142 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-08 18:06:39,142 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-08 18:06:39,143 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-08 18:06:39,143 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2024-11-08 18:06:39,159 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:06:39" (1/1) ...
[2024-11-08 18:06:39,160 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:06:39" (1/1) ...
[2024-11-08 18:06:39,161 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:06:39" (1/1) ...
[2024-11-08 18:06:39,177 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2024-11-08 18:06:39,177 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:06:39" (1/1) ...
[2024-11-08 18:06:39,177 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:06:39" (1/1) ...
[2024-11-08 18:06:39,180 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:06:39" (1/1) ...
[2024-11-08 18:06:39,184 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:06:39" (1/1) ...
[2024-11-08 18:06:39,185 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:06:39" (1/1) ...
[2024-11-08 18:06:39,186 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:06:39" (1/1) ...
[2024-11-08 18:06:39,188 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-08 18:06:39,189 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-08 18:06:39,189 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2024-11-08 18:06:39,189 INFO L274 PluginConnector]: RCFGBuilder initialized
[2024-11-08 18:06:39,190 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:06:39" (1/1) ...
[2024-11-08 18:06:39,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-08 18:06:39,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:06:39,222 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-11-08 18:06:39,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-11-08 18:06:39,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-08 18:06:39,260 INFO L130 BoogieDeclarations]: Found specification of procedure thread1
[2024-11-08 18:06:39,260 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1
[2024-11-08 18:06:39,261 INFO L130 BoogieDeclarations]: Found specification of procedure thread2
[2024-11-08 18:06:39,261 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2
[2024-11-08 18:06:39,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-08 18:06:39,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-08 18:06:39,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-08 18:06:39,263 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement.
[2024-11-08 18:06:39,360 INFO L238 CfgBuilder]: Building ICFG
[2024-11-08 18:06:39,363 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-08 18:06:39,554 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program.
[2024-11-08 18:06:39,554 INFO L287 CfgBuilder]: Performing block encoding
[2024-11-08 18:06:39,693 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-08 18:06:39,693 INFO L316 CfgBuilder]: Removed 0 assume(true) statements.
[2024-11-08 18:06:39,694 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:06:39 BoogieIcfgContainer
[2024-11-08 18:06:39,694 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-08 18:06:39,697 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-08 18:06:39,697 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2024-11-08 18:06:39,701 INFO L274 PluginConnector]: TraceAbstraction initialized
[2024-11-08 18:06:39,701 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:06:38" (1/3) ...
[2024-11-08 18:06:39,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be8cfc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:06:39, skipping insertion in model container
[2024-11-08 18:06:39,703 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:06:39" (2/3) ...
[2024-11-08 18:06:39,703 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be8cfc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:06:39, skipping insertion in model container
[2024-11-08 18:06:39,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:06:39" (3/3) ...
[2024-11-08 18:06:39,705 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-comm.wvr.c
[2024-11-08 18:06:39,727 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-08 18:06:39,727 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-08 18:06:39,727 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2024-11-08 18:06:39,793 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions.
[2024-11-08 18:06:39,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 24 transitions, 62 flow
[2024-11-08 18:06:39,859 INFO L124 PetriNetUnfolderBase]: 4/22 cut-off events.
[2024-11-08 18:06:39,860 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2024-11-08 18:06:39,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 22 events. 4/22 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 22 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place.
[2024-11-08 18:06:39,863 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 24 transitions, 62 flow
[2024-11-08 18:06:39,867 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 21 transitions, 54 flow
[2024-11-08 18:06:39,878 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-08 18:06:39,886 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;@25abe43d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-08 18:06:39,886 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations.
[2024-11-08 18:06:39,898 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2024-11-08 18:06:39,898 INFO L124 PetriNetUnfolderBase]: 4/20 cut-off events.
[2024-11-08 18:06:39,898 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES.
[2024-11-08 18:06:39,899 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 18:06:39,899 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:06:39,900 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-08 18:06:39,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:06:39,907 INFO L85 PathProgramCache]: Analyzing trace with hash -498638704, now seen corresponding path program 1 times
[2024-11-08 18:06:39,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:06:39,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322824414]
[2024-11-08 18:06:39,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:06:39,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:06:40,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:06:40,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:06:40,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:06:40,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322824414]
[2024-11-08 18:06:40,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322824414] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-08 18:06:40,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-08 18:06:40,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-08 18:06:40,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686791823]
[2024-11-08 18:06:40,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-08 18:06:40,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-08 18:06:40,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:06:40,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-08 18:06:40,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-08 18:06:40,773 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 24
[2024-11-08 18:06:40,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 21 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:06:40,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 18:06:40,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 24
[2024-11-08 18:06:40,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 18:06:40,922 INFO L124 PetriNetUnfolderBase]: 82/165 cut-off events.
[2024-11-08 18:06:40,922 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES.
[2024-11-08 18:06:40,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311 conditions, 165 events. 82/165 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 577 event pairs, 22 based on Foata normal form. 1/144 useless extension candidates. Maximal degree in co-relation 262. Up to 72 conditions per place.
[2024-11-08 18:06:40,928 INFO L140 encePairwiseOnDemand]: 20/24 looper letters, 21 selfloop transitions, 3 changer transitions 1/32 dead transitions.
[2024-11-08 18:06:40,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 32 transitions, 135 flow
[2024-11-08 18:06:40,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2024-11-08 18:06:40,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2024-11-08 18:06:40,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions.
[2024-11-08 18:06:40,942 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7361111111111112
[2024-11-08 18:06:40,945 INFO L175 Difference]: Start difference. First operand has 24 places, 21 transitions, 54 flow. Second operand 3 states and 53 transitions.
[2024-11-08 18:06:40,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 32 transitions, 135 flow
[2024-11-08 18:06:40,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 32 transitions, 121 flow, removed 0 selfloop flow, removed 4 redundant places.
[2024-11-08 18:06:40,953 INFO L231 Difference]: Finished difference. Result has 23 places, 23 transitions, 65 flow
[2024-11-08 18:06:40,955 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=23, PETRI_TRANSITIONS=23}
[2024-11-08 18:06:40,960 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, -1 predicate places.
[2024-11-08 18:06:40,960 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 23 transitions, 65 flow
[2024-11-08 18:06:40,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:06:40,961 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 18:06:40,961 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:06:40,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-08 18:06:40,962 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-08 18:06:40,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:06:40,963 INFO L85 PathProgramCache]: Analyzing trace with hash -239665015, now seen corresponding path program 1 times
[2024-11-08 18:06:40,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:06:40,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160552196]
[2024-11-08 18:06:40,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:06:40,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:06:41,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:06:41,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:06:41,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:06:41,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160552196]
[2024-11-08 18:06:41,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160552196] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 18:06:41,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756614381]
[2024-11-08 18:06:41,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:06:41,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:06:41,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:06:41,487 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:06:41,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-08 18:06:41,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:06:41,568 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-11-08 18:06:41,573 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:06:41,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:06:41,769 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 18:06:42,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:06:42,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756614381] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 18:06:42,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 18:06:42,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 8
[2024-11-08 18:06:42,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954682968]
[2024-11-08 18:06:42,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 18:06:42,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2024-11-08 18:06:42,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:06:42,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2024-11-08 18:06:42,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72
[2024-11-08 18:06:42,136 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24
[2024-11-08 18:06:42,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 23 transitions, 65 flow. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 9 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)
[2024-11-08 18:06:42,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 18:06:42,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24
[2024-11-08 18:06:42,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 18:06:42,418 INFO L124 PetriNetUnfolderBase]: 140/252 cut-off events.
[2024-11-08 18:06:42,418 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES.
[2024-11-08 18:06:42,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 549 conditions, 252 events. 140/252 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 897 event pairs, 18 based on Foata normal form. 1/228 useless extension candidates. Maximal degree in co-relation 181. Up to 113 conditions per place.
[2024-11-08 18:06:42,422 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 31 selfloop transitions, 8 changer transitions 17/60 dead transitions.
[2024-11-08 18:06:42,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 60 transitions, 273 flow
[2024-11-08 18:06:42,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-08 18:06:42,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2024-11-08 18:06:42,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 105 transitions.
[2024-11-08 18:06:42,426 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.546875
[2024-11-08 18:06:42,426 INFO L175 Difference]: Start difference. First operand has 23 places, 23 transitions, 65 flow. Second operand 8 states and 105 transitions.
[2024-11-08 18:06:42,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 60 transitions, 273 flow
[2024-11-08 18:06:42,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 60 transitions, 267 flow, removed 0 selfloop flow, removed 1 redundant places.
[2024-11-08 18:06:42,431 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 113 flow
[2024-11-08 18:06:42,434 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=113, PETRI_PLACES=34, PETRI_TRANSITIONS=28}
[2024-11-08 18:06:42,435 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 10 predicate places.
[2024-11-08 18:06:42,435 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 113 flow
[2024-11-08 18:06:42,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 9 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)
[2024-11-08 18:06:42,436 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 18:06:42,436 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:06:42,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-08 18:06:42,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:06:42,637 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-08 18:06:42,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:06:42,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1090852503, now seen corresponding path program 2 times
[2024-11-08 18:06:42,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:06:42,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089808547]
[2024-11-08 18:06:42,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:06:42,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:06:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:06:43,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:06:43,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:06:43,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089808547]
[2024-11-08 18:06:43,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089808547] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 18:06:43,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641554038]
[2024-11-08 18:06:43,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-08 18:06:43,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:06:43,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:06:43,154 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:06:43,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-08 18:06:43,227 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-08 18:06:43,227 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 18:06:43,228 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-11-08 18:06:43,230 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:06:43,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:06:43,363 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 18:06:43,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:06:43,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641554038] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 18:06:43,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 18:06:43,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10
[2024-11-08 18:06:43,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090270897]
[2024-11-08 18:06:43,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 18:06:43,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-11-08 18:06:43,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:06:43,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-11-08 18:06:43,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110
[2024-11-08 18:06:43,552 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24
[2024-11-08 18:06:43,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 113 flow. Second operand has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:06:43,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 18:06:43,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24
[2024-11-08 18:06:43,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 18:06:43,900 INFO L124 PetriNetUnfolderBase]: 277/493 cut-off events.
[2024-11-08 18:06:43,900 INFO L125 PetriNetUnfolderBase]: For 209/209 co-relation queries the response was YES.
[2024-11-08 18:06:43,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1259 conditions, 493 events. 277/493 cut-off events. For 209/209 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2133 event pairs, 47 based on Foata normal form. 3/477 useless extension candidates. Maximal degree in co-relation 1240. Up to 131 conditions per place.
[2024-11-08 18:06:43,907 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 55 selfloop transitions, 26 changer transitions 12/97 dead transitions.
[2024-11-08 18:06:43,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 97 transitions, 517 flow
[2024-11-08 18:06:43,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2024-11-08 18:06:43,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states.
[2024-11-08 18:06:43,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 167 transitions.
[2024-11-08 18:06:43,910 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5798611111111112
[2024-11-08 18:06:43,910 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 113 flow. Second operand 12 states and 167 transitions.
[2024-11-08 18:06:43,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 97 transitions, 517 flow
[2024-11-08 18:06:43,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 97 transitions, 493 flow, removed 8 selfloop flow, removed 4 redundant places.
[2024-11-08 18:06:43,916 INFO L231 Difference]: Finished difference. Result has 47 places, 50 transitions, 304 flow
[2024-11-08 18:06:43,916 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=304, PETRI_PLACES=47, PETRI_TRANSITIONS=50}
[2024-11-08 18:06:43,917 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 23 predicate places.
[2024-11-08 18:06:43,917 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 50 transitions, 304 flow
[2024-11-08 18:06:43,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 11 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:06:43,917 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 18:06:43,918 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:06:43,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-08 18:06:44,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:06:44,119 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-08 18:06:44,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:06:44,119 INFO L85 PathProgramCache]: Analyzing trace with hash 276858553, now seen corresponding path program 3 times
[2024-11-08 18:06:44,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:06:44,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98569962]
[2024-11-08 18:06:44,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:06:44,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:06:44,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:06:44,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:06:44,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:06:44,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98569962]
[2024-11-08 18:06:44,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98569962] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 18:06:44,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905576597]
[2024-11-08 18:06:44,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-08 18:06:44,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:06:44,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:06:44,564 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:06:44,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-08 18:06:44,645 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-11-08 18:06:44,646 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 18:06:44,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core
[2024-11-08 18:06:44,648 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:06:44,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:06:44,792 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 18:06:45,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:06:45,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905576597] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 18:06:45,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 18:06:45,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9
[2024-11-08 18:06:45,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464458637]
[2024-11-08 18:06:45,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 18:06:45,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-11-08 18:06:45,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:06:45,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-11-08 18:06:45,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90
[2024-11-08 18:06:45,119 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24
[2024-11-08 18:06:45,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 50 transitions, 304 flow. Second operand has 10 states, 10 states have (on average 9.1) internal successors, (91), 10 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)
[2024-11-08 18:06:45,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 18:06:45,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24
[2024-11-08 18:06:45,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 18:06:45,527 INFO L124 PetriNetUnfolderBase]: 379/698 cut-off events.
[2024-11-08 18:06:45,527 INFO L125 PetriNetUnfolderBase]: For 842/842 co-relation queries the response was YES.
[2024-11-08 18:06:45,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2148 conditions, 698 events. 379/698 cut-off events. For 842/842 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3436 event pairs, 38 based on Foata normal form. 3/670 useless extension candidates. Maximal degree in co-relation 1930. Up to 278 conditions per place.
[2024-11-08 18:06:45,535 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 57 selfloop transitions, 40 changer transitions 11/112 dead transitions.
[2024-11-08 18:06:45,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 112 transitions, 806 flow
[2024-11-08 18:06:45,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2024-11-08 18:06:45,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states.
[2024-11-08 18:06:45,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions.
[2024-11-08 18:06:45,538 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.575
[2024-11-08 18:06:45,538 INFO L175 Difference]: Start difference. First operand has 47 places, 50 transitions, 304 flow. Second operand 10 states and 138 transitions.
[2024-11-08 18:06:45,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 112 transitions, 806 flow
[2024-11-08 18:06:45,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 112 transitions, 728 flow, removed 35 selfloop flow, removed 3 redundant places.
[2024-11-08 18:06:45,555 INFO L231 Difference]: Finished difference. Result has 57 places, 78 transitions, 599 flow
[2024-11-08 18:06:45,555 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=599, PETRI_PLACES=57, PETRI_TRANSITIONS=78}
[2024-11-08 18:06:45,558 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 33 predicate places.
[2024-11-08 18:06:45,558 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 78 transitions, 599 flow
[2024-11-08 18:06:45,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 10 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)
[2024-11-08 18:06:45,559 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 18:06:45,559 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:06:45,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-11-08 18:06:45,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:06:45,764 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-08 18:06:45,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:06:45,765 INFO L85 PathProgramCache]: Analyzing trace with hash 552628971, now seen corresponding path program 1 times
[2024-11-08 18:06:45,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:06:45,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361854239]
[2024-11-08 18:06:45,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:06:45,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:06:45,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:06:46,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:06:46,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:06:46,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361854239]
[2024-11-08 18:06:46,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361854239] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 18:06:46,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712996643]
[2024-11-08 18:06:46,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:06:46,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:06:46,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:06:46,054 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:06:46,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-08 18:06:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:06:46,130 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 12 conjuncts are in the unsatisfiable core
[2024-11-08 18:06:46,131 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:06:46,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:06:46,275 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 18:06:46,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:06:46,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712996643] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 18:06:46,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 18:06:46,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9
[2024-11-08 18:06:46,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805243809]
[2024-11-08 18:06:46,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 18:06:46,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-11-08 18:06:46,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:06:46,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-11-08 18:06:46,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90
[2024-11-08 18:06:46,554 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24
[2024-11-08 18:06:46,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 78 transitions, 599 flow. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:06:46,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 18:06:46,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24
[2024-11-08 18:06:46,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 18:06:46,944 INFO L124 PetriNetUnfolderBase]: 504/920 cut-off events.
[2024-11-08 18:06:46,944 INFO L125 PetriNetUnfolderBase]: For 1947/2013 co-relation queries the response was YES.
[2024-11-08 18:06:46,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3178 conditions, 920 events. 504/920 cut-off events. For 1947/2013 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4798 event pairs, 89 based on Foata normal form. 22/846 useless extension candidates. Maximal degree in co-relation 2846. Up to 689 conditions per place.
[2024-11-08 18:06:46,953 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 69 selfloop transitions, 9 changer transitions 19/117 dead transitions.
[2024-11-08 18:06:46,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 117 transitions, 973 flow
[2024-11-08 18:06:46,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2024-11-08 18:06:46,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2024-11-08 18:06:46,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions.
[2024-11-08 18:06:46,955 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5572916666666666
[2024-11-08 18:06:46,955 INFO L175 Difference]: Start difference. First operand has 57 places, 78 transitions, 599 flow. Second operand 8 states and 107 transitions.
[2024-11-08 18:06:46,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 117 transitions, 973 flow
[2024-11-08 18:06:46,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 117 transitions, 898 flow, removed 23 selfloop flow, removed 3 redundant places.
[2024-11-08 18:06:46,984 INFO L231 Difference]: Finished difference. Result has 66 places, 82 transitions, 605 flow
[2024-11-08 18:06:46,985 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=605, PETRI_PLACES=66, PETRI_TRANSITIONS=82}
[2024-11-08 18:06:46,985 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 42 predicate places.
[2024-11-08 18:06:46,986 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 82 transitions, 605 flow
[2024-11-08 18:06:46,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:06:46,986 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 18:06:46,986 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:06:47,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-11-08 18:06:47,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:06:47,187 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-08 18:06:47,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:06:47,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1350853109, now seen corresponding path program 2 times
[2024-11-08 18:06:47,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:06:47,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067108670]
[2024-11-08 18:06:47,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:06:47,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:06:47,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:06:47,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:06:47,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:06:47,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067108670]
[2024-11-08 18:06:47,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067108670] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 18:06:47,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624867594]
[2024-11-08 18:06:47,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-08 18:06:47,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:06:47,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:06:47,408 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:06:47,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-11-08 18:06:47,471 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-08 18:06:47,472 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 18:06:47,473 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 16 conjuncts are in the unsatisfiable core
[2024-11-08 18:06:47,475 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:06:47,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:06:47,682 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 18:06:48,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:06:48,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624867594] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 18:06:48,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 18:06:48,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 7] total 16
[2024-11-08 18:06:48,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668390076]
[2024-11-08 18:06:48,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 18:06:48,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2024-11-08 18:06:48,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:06:48,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2024-11-08 18:06:48,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272
[2024-11-08 18:06:48,132 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24
[2024-11-08 18:06:48,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 82 transitions, 605 flow. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 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)
[2024-11-08 18:06:48,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 18:06:48,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24
[2024-11-08 18:06:48,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 18:06:48,960 INFO L124 PetriNetUnfolderBase]: 1104/1879 cut-off events.
[2024-11-08 18:06:48,961 INFO L125 PetriNetUnfolderBase]: For 3817/3817 co-relation queries the response was YES.
[2024-11-08 18:06:48,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6834 conditions, 1879 events. 1104/1879 cut-off events. For 3817/3817 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 10262 event pairs, 81 based on Foata normal form. 13/1892 useless extension candidates. Maximal degree in co-relation 6802. Up to 709 conditions per place.
[2024-11-08 18:06:48,981 INFO L140 encePairwiseOnDemand]: 10/24 looper letters, 108 selfloop transitions, 91 changer transitions 58/258 dead transitions.
[2024-11-08 18:06:48,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 258 transitions, 2224 flow
[2024-11-08 18:06:48,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2024-11-08 18:06:48,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states.
[2024-11-08 18:06:48,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 196 transitions.
[2024-11-08 18:06:48,985 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4803921568627451
[2024-11-08 18:06:48,985 INFO L175 Difference]: Start difference. First operand has 66 places, 82 transitions, 605 flow. Second operand 17 states and 196 transitions.
[2024-11-08 18:06:48,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 258 transitions, 2224 flow
[2024-11-08 18:06:49,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 258 transitions, 2198 flow, removed 10 selfloop flow, removed 3 redundant places.
[2024-11-08 18:06:49,071 INFO L231 Difference]: Finished difference. Result has 85 places, 137 transitions, 1439 flow
[2024-11-08 18:06:49,071 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1439, PETRI_PLACES=85, PETRI_TRANSITIONS=137}
[2024-11-08 18:06:49,072 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 61 predicate places.
[2024-11-08 18:06:49,072 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 137 transitions, 1439 flow
[2024-11-08 18:06:49,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 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)
[2024-11-08 18:06:49,073 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 18:06:49,073 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:06:49,094 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2024-11-08 18:06:49,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2024-11-08 18:06:49,278 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-08 18:06:49,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:06:49,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1660283007, now seen corresponding path program 3 times
[2024-11-08 18:06:49,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:06:49,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998521385]
[2024-11-08 18:06:49,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:06:49,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:06:49,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:06:49,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:06:49,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:06:49,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998521385]
[2024-11-08 18:06:49,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998521385] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 18:06:49,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88719283]
[2024-11-08 18:06:49,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-08 18:06:49,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:06:49,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:06:49,570 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:06:49,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-11-08 18:06:49,645 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-11-08 18:06:49,646 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 18:06:49,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-11-08 18:06:49,648 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:06:49,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:06:49,803 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 18:06:49,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:06:49,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88719283] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 18:06:49,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 18:06:49,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 14
[2024-11-08 18:06:49,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146487584]
[2024-11-08 18:06:49,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 18:06:49,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2024-11-08 18:06:49,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:06:49,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2024-11-08 18:06:49,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210
[2024-11-08 18:06:50,042 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24
[2024-11-08 18:06:50,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 137 transitions, 1439 flow. Second operand has 15 states, 15 states have (on average 7.4) internal successors, (111), 15 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:06:50,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 18:06:50,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24
[2024-11-08 18:06:50,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 18:06:51,017 INFO L124 PetriNetUnfolderBase]: 1179/2206 cut-off events.
[2024-11-08 18:06:51,017 INFO L125 PetriNetUnfolderBase]: For 10401/10643 co-relation queries the response was YES.
[2024-11-08 18:06:51,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10694 conditions, 2206 events. 1179/2206 cut-off events. For 10401/10643 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 14421 event pairs, 147 based on Foata normal form. 80/2278 useless extension candidates. Maximal degree in co-relation 10110. Up to 993 conditions per place.
[2024-11-08 18:06:51,045 INFO L140 encePairwiseOnDemand]: 13/24 looper letters, 134 selfloop transitions, 100 changer transitions 21/275 dead transitions.
[2024-11-08 18:06:51,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 275 transitions, 3196 flow
[2024-11-08 18:06:51,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2024-11-08 18:06:51,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states.
[2024-11-08 18:06:51,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 174 transitions.
[2024-11-08 18:06:51,047 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429
[2024-11-08 18:06:51,047 INFO L175 Difference]: Start difference. First operand has 85 places, 137 transitions, 1439 flow. Second operand 14 states and 174 transitions.
[2024-11-08 18:06:51,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 275 transitions, 3196 flow
[2024-11-08 18:06:51,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 275 transitions, 3060 flow, removed 54 selfloop flow, removed 6 redundant places.
[2024-11-08 18:06:51,138 INFO L231 Difference]: Finished difference. Result has 97 places, 185 transitions, 2332 flow
[2024-11-08 18:06:51,139 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1353, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2332, PETRI_PLACES=97, PETRI_TRANSITIONS=185}
[2024-11-08 18:06:51,139 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 73 predicate places.
[2024-11-08 18:06:51,140 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 185 transitions, 2332 flow
[2024-11-08 18:06:51,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.4) internal successors, (111), 15 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:06:51,140 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 18:06:51,141 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:06:51,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2024-11-08 18:06:51,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:06:51,341 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-08 18:06:51,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:06:51,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1476986380, now seen corresponding path program 1 times
[2024-11-08 18:06:51,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:06:51,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027169920]
[2024-11-08 18:06:51,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:06:51,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:06:51,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:06:52,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:06:52,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:06:52,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027169920]
[2024-11-08 18:06:52,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027169920] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 18:06:52,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343655559]
[2024-11-08 18:06:52,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:06:52,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:06:52,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:06:52,158 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:06:52,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2024-11-08 18:06:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:06:52,232 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-11-08 18:06:52,234 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:06:52,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:06:52,790 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 18:06:55,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:06:55,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343655559] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 18:06:55,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 18:06:55,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24
[2024-11-08 18:06:55,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772187264]
[2024-11-08 18:06:55,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 18:06:55,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2024-11-08 18:06:55,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:06:55,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2024-11-08 18:06:55,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600
[2024-11-08 18:06:55,332 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24
[2024-11-08 18:06:55,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 185 transitions, 2332 flow. Second operand has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:06:55,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 18:06:55,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24
[2024-11-08 18:06:55,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 18:07:12,260 INFO L124 PetriNetUnfolderBase]: 1981/3537 cut-off events.
[2024-11-08 18:07:12,261 INFO L125 PetriNetUnfolderBase]: For 18161/18161 co-relation queries the response was YES.
[2024-11-08 18:07:12,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18519 conditions, 3537 events. 1981/3537 cut-off events. For 18161/18161 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 23610 event pairs, 50 based on Foata normal form. 29/3566 useless extension candidates. Maximal degree in co-relation 17781. Up to 725 conditions per place.
[2024-11-08 18:07:12,300 INFO L140 encePairwiseOnDemand]: 10/24 looper letters, 199 selfloop transitions, 289 changer transitions 170/659 dead transitions.
[2024-11-08 18:07:12,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 659 transitions, 7711 flow
[2024-11-08 18:07:12,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states.
[2024-11-08 18:07:12,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states.
[2024-11-08 18:07:12,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 533 transitions.
[2024-11-08 18:07:12,304 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3829022988505747
[2024-11-08 18:07:12,304 INFO L175 Difference]: Start difference. First operand has 97 places, 185 transitions, 2332 flow. Second operand 58 states and 533 transitions.
[2024-11-08 18:07:12,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 659 transitions, 7711 flow
[2024-11-08 18:07:12,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 659 transitions, 7630 flow, removed 28 selfloop flow, removed 5 redundant places.
[2024-11-08 18:07:12,460 INFO L231 Difference]: Finished difference. Result has 177 places, 351 transitions, 5371 flow
[2024-11-08 18:07:12,460 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=2296, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=5371, PETRI_PLACES=177, PETRI_TRANSITIONS=351}
[2024-11-08 18:07:12,461 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 153 predicate places.
[2024-11-08 18:07:12,461 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 351 transitions, 5371 flow
[2024-11-08 18:07:12,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:07:12,462 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 18:07:12,462 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:07:12,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0
[2024-11-08 18:07:12,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:07:12,666 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-08 18:07:12,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:07:12,667 INFO L85 PathProgramCache]: Analyzing trace with hash -906416092, now seen corresponding path program 2 times
[2024-11-08 18:07:12,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:07:12,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063981398]
[2024-11-08 18:07:12,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:07:12,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:07:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:07:13,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:07:13,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:07:13,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063981398]
[2024-11-08 18:07:13,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063981398] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 18:07:13,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839764182]
[2024-11-08 18:07:13,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-08 18:07:13,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:07:13,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:07:13,507 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:07:13,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2024-11-08 18:07:13,574 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-08 18:07:13,574 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 18:07:13,575 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-11-08 18:07:13,576 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:07:13,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:07:13,999 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 18:07:19,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:07:19,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839764182] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 18:07:19,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 18:07:19,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24
[2024-11-08 18:07:19,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259411195]
[2024-11-08 18:07:19,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 18:07:19,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2024-11-08 18:07:19,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:07:19,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2024-11-08 18:07:19,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600
[2024-11-08 18:07:19,216 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24
[2024-11-08 18:07:19,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 351 transitions, 5371 flow. Second operand has 25 states, 25 states have (on average 4.76) internal successors, (119), 25 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:07:19,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 18:07:19,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24
[2024-11-08 18:07:19,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 18:07:30,375 INFO L124 PetriNetUnfolderBase]: 1925/3494 cut-off events.
[2024-11-08 18:07:30,376 INFO L125 PetriNetUnfolderBase]: For 41681/41681 co-relation queries the response was YES.
[2024-11-08 18:07:30,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24934 conditions, 3494 events. 1925/3494 cut-off events. For 41681/41681 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 23502 event pairs, 57 based on Foata normal form. 37/3531 useless extension candidates. Maximal degree in co-relation 24824. Up to 1194 conditions per place.
[2024-11-08 18:07:30,457 INFO L140 encePairwiseOnDemand]: 9/24 looper letters, 220 selfloop transitions, 449 changer transitions 113/783 dead transitions.
[2024-11-08 18:07:30,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 783 transitions, 12509 flow
[2024-11-08 18:07:30,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states.
[2024-11-08 18:07:30,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states.
[2024-11-08 18:07:30,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 537 transitions.
[2024-11-08 18:07:30,463 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3792372881355932
[2024-11-08 18:07:30,463 INFO L175 Difference]: Start difference. First operand has 177 places, 351 transitions, 5371 flow. Second operand 59 states and 537 transitions.
[2024-11-08 18:07:30,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 783 transitions, 12509 flow
[2024-11-08 18:07:30,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 783 transitions, 11203 flow, removed 574 selfloop flow, removed 22 redundant places.
[2024-11-08 18:07:30,937 INFO L231 Difference]: Finished difference. Result has 231 places, 555 transitions, 9632 flow
[2024-11-08 18:07:30,937 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=4471, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=229, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=9632, PETRI_PLACES=231, PETRI_TRANSITIONS=555}
[2024-11-08 18:07:30,938 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 207 predicate places.
[2024-11-08 18:07:30,938 INFO L471 AbstractCegarLoop]: Abstraction has has 231 places, 555 transitions, 9632 flow
[2024-11-08 18:07:30,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.76) internal successors, (119), 25 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:07:30,938 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 18:07:30,938 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:07:30,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2024-11-08 18:07:31,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:07:31,139 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-08 18:07:31,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:07:31,140 INFO L85 PathProgramCache]: Analyzing trace with hash 668885028, now seen corresponding path program 3 times
[2024-11-08 18:07:31,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:07:31,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293214551]
[2024-11-08 18:07:31,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:07:31,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:07:31,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:07:31,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:07:31,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:07:31,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293214551]
[2024-11-08 18:07:31,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293214551] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 18:07:31,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132097827]
[2024-11-08 18:07:31,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-08 18:07:31,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:07:31,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:07:31,955 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:07:31,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2024-11-08 18:07:32,036 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-11-08 18:07:32,036 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 18:07:32,037 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-11-08 18:07:32,038 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:07:32,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:07:32,448 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 18:07:37,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:07:37,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132097827] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 18:07:37,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 18:07:37,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24
[2024-11-08 18:07:37,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672878463]
[2024-11-08 18:07:37,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 18:07:37,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2024-11-08 18:07:37,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:07:37,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2024-11-08 18:07:37,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600
[2024-11-08 18:07:37,756 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24
[2024-11-08 18:07:37,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 555 transitions, 9632 flow. Second operand has 25 states, 25 states have (on average 4.76) internal successors, (119), 25 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:07:37,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 18:07:37,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24
[2024-11-08 18:07:37,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 18:07:51,314 INFO L124 PetriNetUnfolderBase]: 1806/3324 cut-off events.
[2024-11-08 18:07:51,315 INFO L125 PetriNetUnfolderBase]: For 37072/37072 co-relation queries the response was YES.
[2024-11-08 18:07:51,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24913 conditions, 3324 events. 1806/3324 cut-off events. For 37072/37072 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 22536 event pairs, 47 based on Foata normal form. 11/3335 useless extension candidates. Maximal degree in co-relation 24776. Up to 1033 conditions per place.
[2024-11-08 18:07:51,362 INFO L140 encePairwiseOnDemand]: 9/24 looper letters, 228 selfloop transitions, 530 changer transitions 76/835 dead transitions.
[2024-11-08 18:07:51,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 835 transitions, 14515 flow
[2024-11-08 18:07:51,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states.
[2024-11-08 18:07:51,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states.
[2024-11-08 18:07:51,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 570 transitions.
[2024-11-08 18:07:51,423 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.376984126984127
[2024-11-08 18:07:51,424 INFO L175 Difference]: Start difference. First operand has 231 places, 555 transitions, 9632 flow. Second operand 63 states and 570 transitions.
[2024-11-08 18:07:51,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 835 transitions, 14515 flow
[2024-11-08 18:07:52,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 835 transitions, 13523 flow, removed 472 selfloop flow, removed 13 redundant places.
[2024-11-08 18:07:52,125 INFO L231 Difference]: Finished difference. Result has 291 places, 646 transitions, 12383 flow
[2024-11-08 18:07:52,125 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=8769, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=428, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=12383, PETRI_PLACES=291, PETRI_TRANSITIONS=646}
[2024-11-08 18:07:52,126 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 267 predicate places.
[2024-11-08 18:07:52,126 INFO L471 AbstractCegarLoop]: Abstraction has has 291 places, 646 transitions, 12383 flow
[2024-11-08 18:07:52,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.76) internal successors, (119), 25 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:07:52,127 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 18:07:52,127 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:07:52,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2024-11-08 18:07:52,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:07:52,328 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-08 18:07:52,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:07:52,329 INFO L85 PathProgramCache]: Analyzing trace with hash -2079631674, now seen corresponding path program 4 times
[2024-11-08 18:07:52,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:07:52,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146133321]
[2024-11-08 18:07:52,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:07:52,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:07:52,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:07:53,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:07:53,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:07:53,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146133321]
[2024-11-08 18:07:53,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146133321] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 18:07:53,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851759525]
[2024-11-08 18:07:53,088 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-11-08 18:07:53,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:07:53,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:07:53,090 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:07:53,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2024-11-08 18:07:53,188 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-11-08 18:07:53,188 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 18:07:53,189 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-11-08 18:07:53,190 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:07:53,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:07:53,503 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 18:07:54,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:07:54,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851759525] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 18:07:54,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 18:07:54,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 22
[2024-11-08 18:07:54,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070456255]
[2024-11-08 18:07:54,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 18:07:54,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2024-11-08 18:07:54,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:07:54,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2024-11-08 18:07:54,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506
[2024-11-08 18:07:55,016 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24
[2024-11-08 18:07:55,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 646 transitions, 12383 flow. Second operand has 23 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:07:55,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 18:07:55,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24
[2024-11-08 18:07:55,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 18:07:59,236 INFO L124 PetriNetUnfolderBase]: 2032/3722 cut-off events.
[2024-11-08 18:07:59,236 INFO L125 PetriNetUnfolderBase]: For 46787/46787 co-relation queries the response was YES.
[2024-11-08 18:07:59,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29833 conditions, 3722 events. 2032/3722 cut-off events. For 46787/46787 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 25594 event pairs, 76 based on Foata normal form. 6/3728 useless extension candidates. Maximal degree in co-relation 29681. Up to 1837 conditions per place.
[2024-11-08 18:07:59,283 INFO L140 encePairwiseOnDemand]: 9/24 looper letters, 352 selfloop transitions, 506 changer transitions 40/899 dead transitions.
[2024-11-08 18:07:59,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 899 transitions, 17850 flow
[2024-11-08 18:07:59,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states.
[2024-11-08 18:07:59,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states.
[2024-11-08 18:07:59,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 303 transitions.
[2024-11-08 18:07:59,288 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3607142857142857
[2024-11-08 18:07:59,288 INFO L175 Difference]: Start difference. First operand has 291 places, 646 transitions, 12383 flow. Second operand 35 states and 303 transitions.
[2024-11-08 18:07:59,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 899 transitions, 17850 flow
[2024-11-08 18:08:00,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 899 transitions, 17255 flow, removed 223 selfloop flow, removed 14 redundant places.
[2024-11-08 18:08:00,346 INFO L231 Difference]: Finished difference. Result has 330 places, 781 transitions, 16602 flow
[2024-11-08 18:08:00,347 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=11910, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=646, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=379, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=16602, PETRI_PLACES=330, PETRI_TRANSITIONS=781}
[2024-11-08 18:08:00,347 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 306 predicate places.
[2024-11-08 18:08:00,348 INFO L471 AbstractCegarLoop]: Abstraction has has 330 places, 781 transitions, 16602 flow
[2024-11-08 18:08:00,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:08:00,348 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 18:08:00,348 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:08:00,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2024-11-08 18:08:00,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:08:00,549 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-08 18:08:00,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:08:00,550 INFO L85 PathProgramCache]: Analyzing trace with hash 513271720, now seen corresponding path program 5 times
[2024-11-08 18:08:00,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:08:00,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191514139]
[2024-11-08 18:08:00,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:08:00,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:08:00,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:08:01,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:08:01,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:08:01,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191514139]
[2024-11-08 18:08:01,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191514139] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 18:08:01,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913903755]
[2024-11-08 18:08:01,369 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-11-08 18:08:01,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:08:01,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:08:01,373 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:08:01,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2024-11-08 18:08:01,453 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2024-11-08 18:08:01,453 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 18:08:01,454 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-11-08 18:08:01,456 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:08:01,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:08:01,717 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 18:08:03,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:08:03,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913903755] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 18:08:03,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 18:08:03,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 22
[2024-11-08 18:08:03,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470669950]
[2024-11-08 18:08:03,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 18:08:03,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2024-11-08 18:08:03,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:08:03,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2024-11-08 18:08:03,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506
[2024-11-08 18:08:03,708 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24
[2024-11-08 18:08:03,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 781 transitions, 16602 flow. Second operand has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:08:03,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 18:08:03,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24
[2024-11-08 18:08:03,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 18:08:08,299 INFO L124 PetriNetUnfolderBase]: 2215/4006 cut-off events.
[2024-11-08 18:08:08,299 INFO L125 PetriNetUnfolderBase]: For 63223/63223 co-relation queries the response was YES.
[2024-11-08 18:08:08,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35378 conditions, 4006 events. 2215/4006 cut-off events. For 63223/63223 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 27445 event pairs, 77 based on Foata normal form. 10/4016 useless extension candidates. Maximal degree in co-relation 35209. Up to 1827 conditions per place.
[2024-11-08 18:08:08,358 INFO L140 encePairwiseOnDemand]: 9/24 looper letters, 359 selfloop transitions, 598 changer transitions 54/1012 dead transitions.
[2024-11-08 18:08:08,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 1012 transitions, 22104 flow
[2024-11-08 18:08:08,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states.
[2024-11-08 18:08:08,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states.
[2024-11-08 18:08:08,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 328 transitions.
[2024-11-08 18:08:08,361 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37962962962962965
[2024-11-08 18:08:08,361 INFO L175 Difference]: Start difference. First operand has 330 places, 781 transitions, 16602 flow. Second operand 36 states and 328 transitions.
[2024-11-08 18:08:08,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 1012 transitions, 22104 flow
[2024-11-08 18:08:09,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 1012 transitions, 21890 flow, removed 92 selfloop flow, removed 7 redundant places.
[2024-11-08 18:08:09,703 INFO L231 Difference]: Finished difference. Result has 372 places, 880 transitions, 20813 flow
[2024-11-08 18:08:09,704 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=16247, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=774, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=501, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=20813, PETRI_PLACES=372, PETRI_TRANSITIONS=880}
[2024-11-08 18:08:09,704 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 348 predicate places.
[2024-11-08 18:08:09,704 INFO L471 AbstractCegarLoop]: Abstraction has has 372 places, 880 transitions, 20813 flow
[2024-11-08 18:08:09,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:08:09,705 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 18:08:09,705 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:08:09,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0
[2024-11-08 18:08:09,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2024-11-08 18:08:09,906 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-08 18:08:09,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:08:09,906 INFO L85 PathProgramCache]: Analyzing trace with hash 238958420, now seen corresponding path program 4 times
[2024-11-08 18:08:09,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:08:09,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788166548]
[2024-11-08 18:08:09,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:08:09,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:08:09,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:08:10,238 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:08:10,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:08:10,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788166548]
[2024-11-08 18:08:10,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788166548] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 18:08:10,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111347489]
[2024-11-08 18:08:10,239 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-11-08 18:08:10,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:08:10,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:08:10,241 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:08:10,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2024-11-08 18:08:10,417 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-11-08 18:08:10,417 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 18:08:10,422 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 14 conjuncts are in the unsatisfiable core
[2024-11-08 18:08:10,423 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:08:10,621 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:08:10,621 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 18:08:15,294 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2024-11-08 18:08:15,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111347489] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 18:08:15,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 18:08:15,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 12
[2024-11-08 18:08:15,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750510620]
[2024-11-08 18:08:15,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 18:08:15,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2024-11-08 18:08:15,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:08:15,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2024-11-08 18:08:15,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=110, Unknown=1, NotChecked=0, Total=156
[2024-11-08 18:08:15,351 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24
[2024-11-08 18:08:15,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 880 transitions, 20813 flow. Second operand has 13 states, 13 states have (on average 8.846153846153847) internal successors, (115), 13 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:08:15,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 18:08:15,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24
[2024-11-08 18:08:15,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 18:08:40,232 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]
[2024-11-08 18:08:42,165 INFO L124 PetriNetUnfolderBase]: 1968/3800 cut-off events.
[2024-11-08 18:08:42,165 INFO L125 PetriNetUnfolderBase]: For 83404/83614 co-relation queries the response was YES.
[2024-11-08 18:08:42,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38104 conditions, 3800 events. 1968/3800 cut-off events. For 83404/83614 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 27878 event pairs, 62 based on Foata normal form. 80/3879 useless extension candidates. Maximal degree in co-relation 37921. Up to 1737 conditions per place.
[2024-11-08 18:08:42,249 INFO L140 encePairwiseOnDemand]: 15/24 looper letters, 372 selfloop transitions, 332 changer transitions 94/948 dead transitions.
[2024-11-08 18:08:42,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 948 transitions, 23342 flow
[2024-11-08 18:08:42,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2024-11-08 18:08:42,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states.
[2024-11-08 18:08:42,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 160 transitions.
[2024-11-08 18:08:42,251 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128
[2024-11-08 18:08:42,251 INFO L175 Difference]: Start difference. First operand has 372 places, 880 transitions, 20813 flow. Second operand 13 states and 160 transitions.
[2024-11-08 18:08:42,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 948 transitions, 23342 flow
[2024-11-08 18:08:44,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 948 transitions, 23093 flow, removed 85 selfloop flow, removed 15 redundant places.
[2024-11-08 18:08:44,162 INFO L231 Difference]: Finished difference. Result has 366 places, 831 transitions, 20276 flow
[2024-11-08 18:08:44,163 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=20607, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=880, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=327, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=548, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=20276, PETRI_PLACES=366, PETRI_TRANSITIONS=831}
[2024-11-08 18:08:44,163 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 342 predicate places.
[2024-11-08 18:08:44,163 INFO L471 AbstractCegarLoop]: Abstraction has has 366 places, 831 transitions, 20276 flow
[2024-11-08 18:08:44,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.846153846153847) internal successors, (115), 13 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:08:44,164 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 18:08:44,164 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:08:44,185 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2024-11-08 18:08:44,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:08:44,365 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-08 18:08:44,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:08:44,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1776281958, now seen corresponding path program 6 times
[2024-11-08 18:08:44,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:08:44,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664220208]
[2024-11-08 18:08:44,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:08:44,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:08:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:08:45,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:08:45,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:08:45,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664220208]
[2024-11-08 18:08:45,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664220208] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 18:08:45,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667625182]
[2024-11-08 18:08:45,459 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2024-11-08 18:08:45,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:08:45,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:08:45,460 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:08:45,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2024-11-08 18:08:45,515 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s)
[2024-11-08 18:08:45,515 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 18:08:45,516 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-11-08 18:08:45,517 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:08:46,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:08:46,166 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 18:08:48,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:08:48,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667625182] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 18:08:48,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 18:08:48,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24
[2024-11-08 18:08:48,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943149497]
[2024-11-08 18:08:48,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 18:08:48,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2024-11-08 18:08:48,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:08:48,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2024-11-08 18:08:48,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600
[2024-11-08 18:08:48,227 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24
[2024-11-08 18:08:48,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 831 transitions, 20276 flow. Second operand has 25 states, 25 states have (on average 4.76) internal successors, (119), 25 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:08:48,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 18:08:48,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24
[2024-11-08 18:08:48,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 18:09:02,579 INFO L124 PetriNetUnfolderBase]: 2563/4603 cut-off events.
[2024-11-08 18:09:02,579 INFO L125 PetriNetUnfolderBase]: For 102601/102601 co-relation queries the response was YES.
[2024-11-08 18:09:02,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46464 conditions, 4603 events. 2563/4603 cut-off events. For 102601/102601 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 32330 event pairs, 43 based on Foata normal form. 2/4605 useless extension candidates. Maximal degree in co-relation 46343. Up to 1857 conditions per place.
[2024-11-08 18:09:02,679 INFO L140 encePairwiseOnDemand]: 9/24 looper letters, 383 selfloop transitions, 748 changer transitions 65/1197 dead transitions.
[2024-11-08 18:09:02,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 1197 transitions, 29979 flow
[2024-11-08 18:09:02,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states.
[2024-11-08 18:09:02,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states.
[2024-11-08 18:09:02,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 332 transitions.
[2024-11-08 18:09:02,682 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3547008547008547
[2024-11-08 18:09:02,683 INFO L175 Difference]: Start difference. First operand has 366 places, 831 transitions, 20276 flow. Second operand 39 states and 332 transitions.
[2024-11-08 18:09:02,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 1197 transitions, 29979 flow
[2024-11-08 18:09:05,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 1197 transitions, 29364 flow, removed 23 selfloop flow, removed 15 redundant places.
[2024-11-08 18:09:05,039 INFO L231 Difference]: Finished difference. Result has 392 places, 1032 transitions, 28145 flow
[2024-11-08 18:09:05,040 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=19831, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=831, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=555, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=28145, PETRI_PLACES=392, PETRI_TRANSITIONS=1032}
[2024-11-08 18:09:05,041 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 368 predicate places.
[2024-11-08 18:09:05,041 INFO L471 AbstractCegarLoop]: Abstraction has has 392 places, 1032 transitions, 28145 flow
[2024-11-08 18:09:05,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.76) internal successors, (119), 25 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:09:05,041 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 18:09:05,041 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:09:05,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0
[2024-11-08 18:09:05,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:09:05,242 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-08 18:09:05,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:09:05,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1130683300, now seen corresponding path program 7 times
[2024-11-08 18:09:05,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:09:05,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590371728]
[2024-11-08 18:09:05,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:09:05,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:09:05,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:09:06,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:09:06,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:09:06,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590371728]
[2024-11-08 18:09:06,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590371728] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 18:09:06,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307192386]
[2024-11-08 18:09:06,553 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2024-11-08 18:09:06,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:09:06,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:09:06,555 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:09:06,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2024-11-08 18:09:06,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:09:06,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-11-08 18:09:06,643 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:09:07,312 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:09:07,312 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 18:09:08,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:09:08,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307192386] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 18:09:08,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 18:09:08,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24
[2024-11-08 18:09:08,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735946082]
[2024-11-08 18:09:08,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 18:09:08,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2024-11-08 18:09:08,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:09:08,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2024-11-08 18:09:08,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600
[2024-11-08 18:09:08,947 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24
[2024-11-08 18:09:08,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 1032 transitions, 28145 flow. Second operand has 25 states, 25 states have (on average 4.76) internal successors, (119), 25 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:09:08,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 18:09:08,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24
[2024-11-08 18:09:08,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 18:09:18,376 INFO L124 PetriNetUnfolderBase]: 2888/5161 cut-off events.
[2024-11-08 18:09:18,377 INFO L125 PetriNetUnfolderBase]: For 142796/142796 co-relation queries the response was YES.
[2024-11-08 18:09:18,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57395 conditions, 5161 events. 2888/5161 cut-off events. For 142796/142796 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 36690 event pairs, 56 based on Foata normal form. 22/5183 useless extension candidates. Maximal degree in co-relation 57267. Up to 2446 conditions per place.
[2024-11-08 18:09:18,512 INFO L140 encePairwiseOnDemand]: 9/24 looper letters, 474 selfloop transitions, 808 changer transitions 61/1344 dead transitions.
[2024-11-08 18:09:18,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 1344 transitions, 37165 flow
[2024-11-08 18:09:18,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states.
[2024-11-08 18:09:18,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states.
[2024-11-08 18:09:18,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 402 transitions.
[2024-11-08 18:09:18,516 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35638297872340424
[2024-11-08 18:09:18,516 INFO L175 Difference]: Start difference. First operand has 392 places, 1032 transitions, 28145 flow. Second operand 47 states and 402 transitions.
[2024-11-08 18:09:18,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 1344 transitions, 37165 flow
[2024-11-08 18:09:21,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 1344 transitions, 36821 flow, removed 90 selfloop flow, removed 17 redundant places.
[2024-11-08 18:09:21,417 INFO L231 Difference]: Finished difference. Result has 434 places, 1191 transitions, 35565 flow
[2024-11-08 18:09:21,418 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=27541, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1019, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=650, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=35565, PETRI_PLACES=434, PETRI_TRANSITIONS=1191}
[2024-11-08 18:09:21,418 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 410 predicate places.
[2024-11-08 18:09:21,418 INFO L471 AbstractCegarLoop]: Abstraction has has 434 places, 1191 transitions, 35565 flow
[2024-11-08 18:09:21,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.76) internal successors, (119), 25 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:09:21,419 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 18:09:21,419 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:09:21,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0
[2024-11-08 18:09:21,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2024-11-08 18:09:21,620 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-08 18:09:21,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:09:21,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1019617986, now seen corresponding path program 8 times
[2024-11-08 18:09:21,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:09:21,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617271429]
[2024-11-08 18:09:21,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:09:21,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:09:21,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:09:22,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:09:22,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:09:22,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617271429]
[2024-11-08 18:09:22,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617271429] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 18:09:22,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612796890]
[2024-11-08 18:09:22,710 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-08 18:09:22,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:09:22,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:09:22,711 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:09:22,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2024-11-08 18:09:22,886 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-08 18:09:22,887 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 18:09:22,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-11-08 18:09:22,889 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:09:23,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:09:23,711 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 18:09:30,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:09:30,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612796890] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 18:09:30,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 18:09:30,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24
[2024-11-08 18:09:30,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605596162]
[2024-11-08 18:09:30,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 18:09:30,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2024-11-08 18:09:30,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:09:30,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2024-11-08 18:09:30,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600
[2024-11-08 18:09:30,911 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24
[2024-11-08 18:09:30,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 1191 transitions, 35565 flow. Second operand has 25 states, 25 states have (on average 4.76) internal successors, (119), 25 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:09:30,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 18:09:30,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24
[2024-11-08 18:09:30,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 18:09:41,891 INFO L124 PetriNetUnfolderBase]: 3239/5770 cut-off events.
[2024-11-08 18:09:41,891 INFO L125 PetriNetUnfolderBase]: For 193059/193059 co-relation queries the response was YES.
[2024-11-08 18:09:41,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69950 conditions, 5770 events. 3239/5770 cut-off events. For 193059/193059 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 41478 event pairs, 62 based on Foata normal form. 10/5780 useless extension candidates. Maximal degree in co-relation 69808. Up to 2334 conditions per place.
[2024-11-08 18:09:42,030 INFO L140 encePairwiseOnDemand]: 9/24 looper letters, 403 selfloop transitions, 1053 changer transitions 71/1528 dead transitions.
[2024-11-08 18:09:42,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 1528 transitions, 46461 flow
[2024-11-08 18:09:42,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states.
[2024-11-08 18:09:42,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states.
[2024-11-08 18:09:42,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 376 transitions.
[2024-11-08 18:09:42,033 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3821138211382114
[2024-11-08 18:09:42,033 INFO L175 Difference]: Start difference. First operand has 434 places, 1191 transitions, 35565 flow. Second operand 41 states and 376 transitions.
[2024-11-08 18:09:42,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 1528 transitions, 46461 flow
[2024-11-08 18:09:47,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 1528 transitions, 46092 flow, removed 150 selfloop flow, removed 16 redundant places.
[2024-11-08 18:09:47,143 INFO L231 Difference]: Finished difference. Result has 471 places, 1380 transitions, 44948 flow
[2024-11-08 18:09:47,144 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=34893, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=861, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=44948, PETRI_PLACES=471, PETRI_TRANSITIONS=1380}
[2024-11-08 18:09:47,145 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 447 predicate places.
[2024-11-08 18:09:47,145 INFO L471 AbstractCegarLoop]: Abstraction has has 471 places, 1380 transitions, 44948 flow
[2024-11-08 18:09:47,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.76) internal successors, (119), 25 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:09:47,145 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 18:09:47,145 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:09:47,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0
[2024-11-08 18:09:47,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2024-11-08 18:09:47,347 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-08 18:09:47,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:09:47,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1444441410, now seen corresponding path program 9 times
[2024-11-08 18:09:47,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:09:47,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311525908]
[2024-11-08 18:09:47,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:09:47,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:09:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:09:48,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:09:48,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:09:48,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311525908]
[2024-11-08 18:09:48,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311525908] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 18:09:48,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955414871]
[2024-11-08 18:09:48,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-08 18:09:48,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:09:48,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:09:48,482 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:09:48,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process
[2024-11-08 18:09:48,704 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-11-08 18:09:48,705 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 18:09:48,706 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-11-08 18:09:48,707 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:09:49,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:09:49,325 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 18:09:52,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:09:52,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955414871] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 18:09:52,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 18:09:52,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24
[2024-11-08 18:09:52,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165664131]
[2024-11-08 18:09:52,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 18:09:52,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2024-11-08 18:09:52,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:09:52,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2024-11-08 18:09:52,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=466, Unknown=0, NotChecked=0, Total=600
[2024-11-08 18:09:52,773 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24
[2024-11-08 18:09:52,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 1380 transitions, 44948 flow. Second operand has 25 states, 25 states have (on average 4.8) internal successors, (120), 25 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:09:52,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 18:09:52,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24
[2024-11-08 18:09:52,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 18:10:04,671 INFO L124 PetriNetUnfolderBase]: 3175/5664 cut-off events.
[2024-11-08 18:10:04,671 INFO L125 PetriNetUnfolderBase]: For 225382/225382 co-relation queries the response was YES.
[2024-11-08 18:10:04,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74805 conditions, 5664 events. 3175/5664 cut-off events. For 225382/225382 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 40761 event pairs, 61 based on Foata normal form. 15/5679 useless extension candidates. Maximal degree in co-relation 74649. Up to 2364 conditions per place.
[2024-11-08 18:10:04,890 INFO L140 encePairwiseOnDemand]: 9/24 looper letters, 422 selfloop transitions, 1045 changer transitions 53/1521 dead transitions.
[2024-11-08 18:10:04,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 1521 transitions, 49960 flow
[2024-11-08 18:10:04,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states.
[2024-11-08 18:10:04,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states.
[2024-11-08 18:10:04,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 409 transitions.
[2024-11-08 18:10:04,893 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3704710144927536
[2024-11-08 18:10:04,893 INFO L175 Difference]: Start difference. First operand has 471 places, 1380 transitions, 44948 flow. Second operand 46 states and 409 transitions.
[2024-11-08 18:10:04,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 1521 transitions, 49960 flow
[2024-11-08 18:10:10,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 1521 transitions, 49481 flow, removed 212 selfloop flow, removed 11 redundant places.
[2024-11-08 18:10:10,162 INFO L231 Difference]: Finished difference. Result has 506 places, 1391 transitions, 48623 flow
[2024-11-08 18:10:10,163 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=43216, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=992, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=48623, PETRI_PLACES=506, PETRI_TRANSITIONS=1391}
[2024-11-08 18:10:10,164 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 482 predicate places.
[2024-11-08 18:10:10,164 INFO L471 AbstractCegarLoop]: Abstraction has has 506 places, 1391 transitions, 48623 flow
[2024-11-08 18:10:10,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.8) internal successors, (120), 25 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:10:10,164 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 18:10:10,165 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:10:10,188 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0
[2024-11-08 18:10:10,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2024-11-08 18:10:10,366 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-08 18:10:10,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:10:10,366 INFO L85 PathProgramCache]: Analyzing trace with hash -2090320104, now seen corresponding path program 10 times
[2024-11-08 18:10:10,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:10:10,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347644964]
[2024-11-08 18:10:10,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:10:10,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:10:10,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:10:11,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:10:11,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:10:11,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347644964]
[2024-11-08 18:10:11,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347644964] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 18:10:11,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916489131]
[2024-11-08 18:10:11,169 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-11-08 18:10:11,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:10:11,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:10:11,170 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:10:11,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process
[2024-11-08 18:10:11,284 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-11-08 18:10:11,284 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 18:10:11,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-11-08 18:10:11,286 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:10:11,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:10:11,973 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 18:10:13,636 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:10:13,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916489131] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 18:10:13,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 18:10:13,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24
[2024-11-08 18:10:13,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54155401]
[2024-11-08 18:10:13,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 18:10:13,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2024-11-08 18:10:13,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:10:13,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2024-11-08 18:10:13,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=485, Unknown=0, NotChecked=0, Total=600
[2024-11-08 18:10:13,847 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24
[2024-11-08 18:10:13,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 1391 transitions, 48623 flow. Second operand has 25 states, 25 states have (on average 4.76) internal successors, (119), 25 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:10:13,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 18:10:13,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24
[2024-11-08 18:10:13,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 18:10:21,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-08 18:10:24,290 INFO L124 PetriNetUnfolderBase]: 3170/5692 cut-off events.
[2024-11-08 18:10:24,290 INFO L125 PetriNetUnfolderBase]: For 260413/260413 co-relation queries the response was YES.
[2024-11-08 18:10:24,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80059 conditions, 5692 events. 3170/5692 cut-off events. For 260413/260413 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 41299 event pairs, 56 based on Foata normal form. 2/5694 useless extension candidates. Maximal degree in co-relation 79898. Up to 3097 conditions per place.
[2024-11-08 18:10:24,424 INFO L140 encePairwiseOnDemand]: 10/24 looper letters, 613 selfloop transitions, 864 changer transitions 31/1509 dead transitions.
[2024-11-08 18:10:24,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 1509 transitions, 53806 flow
[2024-11-08 18:10:24,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states.
[2024-11-08 18:10:24,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states.
[2024-11-08 18:10:24,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 307 transitions.
[2024-11-08 18:10:24,426 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34572072072072074
[2024-11-08 18:10:24,426 INFO L175 Difference]: Start difference. First operand has 506 places, 1391 transitions, 48623 flow. Second operand 37 states and 307 transitions.
[2024-11-08 18:10:24,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 1509 transitions, 53806 flow
[2024-11-08 18:10:31,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 1509 transitions, 53405 flow, removed 133 selfloop flow, removed 19 redundant places.
[2024-11-08 18:10:31,118 INFO L231 Difference]: Finished difference. Result has 529 places, 1421 transitions, 52694 flow
[2024-11-08 18:10:31,119 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=48222, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=832, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=543, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=52694, PETRI_PLACES=529, PETRI_TRANSITIONS=1421}
[2024-11-08 18:10:31,120 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 505 predicate places.
[2024-11-08 18:10:31,120 INFO L471 AbstractCegarLoop]: Abstraction has has 529 places, 1421 transitions, 52694 flow
[2024-11-08 18:10:31,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.76) internal successors, (119), 25 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:10:31,120 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 18:10:31,120 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:10:31,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0
[2024-11-08 18:10:31,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2024-11-08 18:10:31,321 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-08 18:10:31,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:10:31,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1373395126, now seen corresponding path program 11 times
[2024-11-08 18:10:31,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:10:31,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829741658]
[2024-11-08 18:10:31,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:10:31,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:10:31,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:10:32,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:10:32,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:10:32,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829741658]
[2024-11-08 18:10:32,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829741658] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 18:10:32,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505385198]
[2024-11-08 18:10:32,295 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-11-08 18:10:32,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:10:32,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:10:32,297 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:10:32,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process
[2024-11-08 18:10:32,398 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2024-11-08 18:10:32,398 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 18:10:32,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-11-08 18:10:32,403 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:10:32,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:10:32,982 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 18:10:34,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:10:34,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505385198] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 18:10:34,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 18:10:34,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 22
[2024-11-08 18:10:34,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110076602]
[2024-11-08 18:10:34,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 18:10:34,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2024-11-08 18:10:34,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:10:34,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2024-11-08 18:10:34,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506
[2024-11-08 18:10:34,779 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24
[2024-11-08 18:10:34,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 1421 transitions, 52694 flow. Second operand has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:10:34,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 18:10:34,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24
[2024-11-08 18:10:34,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 18:10:45,264 INFO L124 PetriNetUnfolderBase]: 3744/6636 cut-off events.
[2024-11-08 18:10:45,264 INFO L125 PetriNetUnfolderBase]: For 360047/360047 co-relation queries the response was YES.
[2024-11-08 18:10:45,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98838 conditions, 6636 events. 3744/6636 cut-off events. For 360047/360047 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 48449 event pairs, 53 based on Foata normal form. 22/6658 useless extension candidates. Maximal degree in co-relation 98667. Up to 2666 conditions per place.
[2024-11-08 18:10:45,415 INFO L140 encePairwiseOnDemand]: 9/24 looper letters, 527 selfloop transitions, 1265 changer transitions 69/1862 dead transitions.
[2024-11-08 18:10:45,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 1862 transitions, 69204 flow
[2024-11-08 18:10:45,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states.
[2024-11-08 18:10:45,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states.
[2024-11-08 18:10:45,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 455 transitions.
[2024-11-08 18:10:45,417 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37916666666666665
[2024-11-08 18:10:45,417 INFO L175 Difference]: Start difference. First operand has 529 places, 1421 transitions, 52694 flow. Second operand 50 states and 455 transitions.
[2024-11-08 18:10:45,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 1862 transitions, 69204 flow
[2024-11-08 18:10:53,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 1862 transitions, 68934 flow, removed 88 selfloop flow, removed 18 redundant places.
[2024-11-08 18:10:53,648 INFO L231 Difference]: Finished difference. Result has 581 places, 1696 transitions, 67177 flow
[2024-11-08 18:10:53,649 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=52494, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1009, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=67177, PETRI_PLACES=581, PETRI_TRANSITIONS=1696}
[2024-11-08 18:10:53,650 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 557 predicate places.
[2024-11-08 18:10:53,650 INFO L471 AbstractCegarLoop]: Abstraction has has 581 places, 1696 transitions, 67177 flow
[2024-11-08 18:10:53,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:10:53,650 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 18:10:53,650 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:10:53,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0
[2024-11-08 18:10:53,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:10:53,851 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-08 18:10:53,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:10:53,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1680169866, now seen corresponding path program 12 times
[2024-11-08 18:10:53,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:10:53,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288495913]
[2024-11-08 18:10:53,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:10:53,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:10:53,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:10:54,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:10:54,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:10:54,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288495913]
[2024-11-08 18:10:54,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288495913] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 18:10:54,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629906500]
[2024-11-08 18:10:54,585 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2024-11-08 18:10:54,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:10:54,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:10:54,586 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:10:54,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process
[2024-11-08 18:10:54,655 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s)
[2024-11-08 18:10:54,656 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 18:10:54,656 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-11-08 18:10:54,657 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:10:55,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:10:55,136 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 18:10:58,603 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:10:58,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629906500] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 18:10:58,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 18:10:58,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23
[2024-11-08 18:10:58,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670637407]
[2024-11-08 18:10:58,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 18:10:58,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2024-11-08 18:10:58,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:10:58,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2024-11-08 18:10:58,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552
[2024-11-08 18:10:58,903 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24
[2024-11-08 18:10:58,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 581 places, 1696 transitions, 67177 flow. Second operand has 24 states, 24 states have (on average 4.791666666666667) internal successors, (115), 24 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:10:58,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 18:10:58,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24
[2024-11-08 18:10:58,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 18:11:18,850 INFO L124 PetriNetUnfolderBase]: 3965/7028 cut-off events.
[2024-11-08 18:11:18,850 INFO L125 PetriNetUnfolderBase]: For 440239/440239 co-relation queries the response was YES.
[2024-11-08 18:11:19,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113185 conditions, 7028 events. 3965/7028 cut-off events. For 440239/440239 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 52361 event pairs, 50 based on Foata normal form. 2/7030 useless extension candidates. Maximal degree in co-relation 112992. Up to 2793 conditions per place.
[2024-11-08 18:11:19,123 INFO L140 encePairwiseOnDemand]: 9/24 looper letters, 667 selfloop transitions, 1245 changer transitions 57/1970 dead transitions.
[2024-11-08 18:11:19,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 608 places, 1970 transitions, 79635 flow
[2024-11-08 18:11:19,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states.
[2024-11-08 18:11:19,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states.
[2024-11-08 18:11:19,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 309 transitions.
[2024-11-08 18:11:19,125 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3678571428571429
[2024-11-08 18:11:19,125 INFO L175 Difference]: Start difference. First operand has 581 places, 1696 transitions, 67177 flow. Second operand 35 states and 309 transitions.
[2024-11-08 18:11:19,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 608 places, 1970 transitions, 79635 flow
[2024-11-08 18:11:31,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 592 places, 1970 transitions, 78757 flow, removed 400 selfloop flow, removed 16 redundant places.
[2024-11-08 18:11:31,160 INFO L231 Difference]: Finished difference. Result has 604 places, 1824 transitions, 76935 flow
[2024-11-08 18:11:31,161 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=66453, PETRI_DIFFERENCE_MINUEND_PLACES=558, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=76935, PETRI_PLACES=604, PETRI_TRANSITIONS=1824}
[2024-11-08 18:11:31,161 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 580 predicate places.
[2024-11-08 18:11:31,162 INFO L471 AbstractCegarLoop]: Abstraction has has 604 places, 1824 transitions, 76935 flow
[2024-11-08 18:11:31,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.791666666666667) internal successors, (115), 24 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:11:31,162 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 18:11:31,162 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:11:31,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0
[2024-11-08 18:11:31,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:11:31,363 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-08 18:11:31,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:11:31,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1459291250, now seen corresponding path program 13 times
[2024-11-08 18:11:31,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:11:31,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211608046]
[2024-11-08 18:11:31,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:11:31,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:11:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:11:32,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:11:32,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:11:32,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211608046]
[2024-11-08 18:11:32,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211608046] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 18:11:32,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239754657]
[2024-11-08 18:11:32,361 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2024-11-08 18:11:32,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:11:32,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:11:32,362 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:11:32,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process
[2024-11-08 18:11:32,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:11:32,472 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-11-08 18:11:32,473 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:11:33,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:11:33,098 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 18:11:35,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:11:35,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239754657] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 18:11:35,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 18:11:35,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 22
[2024-11-08 18:11:35,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334824905]
[2024-11-08 18:11:35,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 18:11:35,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2024-11-08 18:11:35,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:11:35,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2024-11-08 18:11:35,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506
[2024-11-08 18:11:35,499 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24
[2024-11-08 18:11:35,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 1824 transitions, 76935 flow. Second operand has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:11:35,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 18:11:35,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24
[2024-11-08 18:11:35,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 18:11:48,187 INFO L124 PetriNetUnfolderBase]: 4060/7219 cut-off events.
[2024-11-08 18:11:48,187 INFO L125 PetriNetUnfolderBase]: For 499330/499330 co-relation queries the response was YES.
[2024-11-08 18:11:48,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121894 conditions, 7219 events. 4060/7219 cut-off events. For 499330/499330 co-relation queries the response was YES. Maximal size of possible extension queue 670. Compared 54240 event pairs, 52 based on Foata normal form. 2/7221 useless extension candidates. Maximal degree in co-relation 121697. Up to 3410 conditions per place.
[2024-11-08 18:11:48,404 INFO L140 encePairwiseOnDemand]: 9/24 looper letters, 615 selfloop transitions, 1351 changer transitions 47/2014 dead transitions.
[2024-11-08 18:11:48,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 638 places, 2014 transitions, 86474 flow
[2024-11-08 18:11:48,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states.
[2024-11-08 18:11:48,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states.
[2024-11-08 18:11:48,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 355 transitions.
[2024-11-08 18:11:48,406 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667
[2024-11-08 18:11:48,406 INFO L175 Difference]: Start difference. First operand has 604 places, 1824 transitions, 76935 flow. Second operand 40 states and 355 transitions.
[2024-11-08 18:11:48,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 638 places, 2014 transitions, 86474 flow
[2024-11-08 18:12:02,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 629 places, 2014 transitions, 86238 flow, removed 83 selfloop flow, removed 9 redundant places.
[2024-11-08 18:12:02,344 INFO L231 Difference]: Finished difference. Result has 643 places, 1899 transitions, 85477 flow
[2024-11-08 18:12:02,345 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=76709, PETRI_DIFFERENCE_MINUEND_PLACES=590, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1824, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1277, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=85477, PETRI_PLACES=643, PETRI_TRANSITIONS=1899}
[2024-11-08 18:12:02,345 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 619 predicate places.
[2024-11-08 18:12:02,345 INFO L471 AbstractCegarLoop]: Abstraction has has 643 places, 1899 transitions, 85477 flow
[2024-11-08 18:12:02,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:12:02,345 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 18:12:02,346 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:12:02,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0
[2024-11-08 18:12:02,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:12:02,546 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-08 18:12:02,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:12:02,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1994521052, now seen corresponding path program 14 times
[2024-11-08 18:12:02,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:12:02,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231736820]
[2024-11-08 18:12:02,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:12:02,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:12:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:12:03,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:12:03,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:12:03,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231736820]
[2024-11-08 18:12:03,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231736820] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 18:12:03,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676109712]
[2024-11-08 18:12:03,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-08 18:12:03,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:12:03,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:12:03,526 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:12:03,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process
[2024-11-08 18:12:03,628 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-08 18:12:03,628 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 18:12:03,629 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-11-08 18:12:03,634 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:12:04,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:12:04,213 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 18:12:06,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:12:06,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676109712] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 18:12:06,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 18:12:06,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 22
[2024-11-08 18:12:06,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384780621]
[2024-11-08 18:12:06,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 18:12:06,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2024-11-08 18:12:06,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:12:06,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2024-11-08 18:12:06,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506
[2024-11-08 18:12:06,487 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24
[2024-11-08 18:12:06,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 643 places, 1899 transitions, 85477 flow. Second operand has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:12:06,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 18:12:06,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24
[2024-11-08 18:12:06,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 18:12:19,283 INFO L124 PetriNetUnfolderBase]: 4126/7331 cut-off events.
[2024-11-08 18:12:19,283 INFO L125 PetriNetUnfolderBase]: For 565153/565153 co-relation queries the response was YES.
[2024-11-08 18:12:19,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131446 conditions, 7331 events. 4126/7331 cut-off events. For 565153/565153 co-relation queries the response was YES. Maximal size of possible extension queue 690. Compared 55332 event pairs, 53 based on Foata normal form. 2/7333 useless extension candidates. Maximal degree in co-relation 131238. Up to 3172 conditions per place.
[2024-11-08 18:12:19,560 INFO L140 encePairwiseOnDemand]: 10/24 looper letters, 687 selfloop transitions, 1332 changer transitions 53/2073 dead transitions.
[2024-11-08 18:12:19,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 675 places, 2073 transitions, 94983 flow
[2024-11-08 18:12:19,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states.
[2024-11-08 18:12:19,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states.
[2024-11-08 18:12:19,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 326 transitions.
[2024-11-08 18:12:19,562 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3574561403508772
[2024-11-08 18:12:19,562 INFO L175 Difference]: Start difference. First operand has 643 places, 1899 transitions, 85477 flow. Second operand 38 states and 326 transitions.
[2024-11-08 18:12:19,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 675 places, 2073 transitions, 94983 flow
[2024-11-08 18:12:35,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 657 places, 2073 transitions, 94605 flow, removed 85 selfloop flow, removed 18 redundant places.
[2024-11-08 18:12:35,828 INFO L231 Difference]: Finished difference. Result has 668 places, 1953 transitions, 92738 flow
[2024-11-08 18:12:35,829 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=85115, PETRI_DIFFERENCE_MINUEND_PLACES=620, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1899, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1275, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=599, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=92738, PETRI_PLACES=668, PETRI_TRANSITIONS=1953}
[2024-11-08 18:12:35,830 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 644 predicate places.
[2024-11-08 18:12:35,830 INFO L471 AbstractCegarLoop]: Abstraction has has 668 places, 1953 transitions, 92738 flow
[2024-11-08 18:12:35,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:12:35,830 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 18:12:35,830 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:12:35,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0
[2024-11-08 18:12:36,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21
[2024-11-08 18:12:36,031 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-08 18:12:36,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:12:36,031 INFO L85 PathProgramCache]: Analyzing trace with hash -674460704, now seen corresponding path program 15 times
[2024-11-08 18:12:36,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:12:36,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668368853]
[2024-11-08 18:12:36,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:12:36,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:12:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:12:36,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:12:36,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:12:36,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668368853]
[2024-11-08 18:12:36,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668368853] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 18:12:36,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615270694]
[2024-11-08 18:12:36,943 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-08 18:12:36,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:12:36,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:12:36,944 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:12:36,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process
[2024-11-08 18:12:37,001 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2024-11-08 18:12:37,001 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 18:12:37,002 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-11-08 18:12:37,003 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:12:37,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:12:37,505 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 18:12:39,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:12:39,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615270694] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 18:12:39,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 18:12:39,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 22
[2024-11-08 18:12:39,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207492028]
[2024-11-08 18:12:39,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 18:12:39,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2024-11-08 18:12:39,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:12:39,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2024-11-08 18:12:39,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506
[2024-11-08 18:12:39,960 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24
[2024-11-08 18:12:39,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 668 places, 1953 transitions, 92738 flow. Second operand has 23 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:12:39,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 18:12:39,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24
[2024-11-08 18:12:39,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 18:12:55,519 INFO L124 PetriNetUnfolderBase]: 4279/7588 cut-off events.
[2024-11-08 18:12:55,520 INFO L125 PetriNetUnfolderBase]: For 644645/644645 co-relation queries the response was YES.
[2024-11-08 18:12:55,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142853 conditions, 7588 events. 4279/7588 cut-off events. For 644645/644645 co-relation queries the response was YES. Maximal size of possible extension queue 697. Compared 57172 event pairs, 89 based on Foata normal form. 11/7599 useless extension candidates. Maximal degree in co-relation 142637. Up to 3632 conditions per place.
[2024-11-08 18:12:55,826 INFO L140 encePairwiseOnDemand]: 9/24 looper letters, 775 selfloop transitions, 1332 changer transitions 42/2150 dead transitions.
[2024-11-08 18:12:55,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 701 places, 2150 transitions, 103436 flow
[2024-11-08 18:12:55,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states.
[2024-11-08 18:12:55,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states.
[2024-11-08 18:12:55,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 344 transitions.
[2024-11-08 18:12:55,828 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36752136752136755
[2024-11-08 18:12:55,828 INFO L175 Difference]: Start difference. First operand has 668 places, 1953 transitions, 92738 flow. Second operand 39 states and 344 transitions.
[2024-11-08 18:12:55,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 701 places, 2150 transitions, 103436 flow
[2024-11-08 18:13:14,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 673 places, 2150 transitions, 102456 flow, removed 175 selfloop flow, removed 28 redundant places.
[2024-11-08 18:13:14,366 INFO L231 Difference]: Finished difference. Result has 686 places, 2043 transitions, 101535 flow
[2024-11-08 18:13:14,367 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=90637, PETRI_DIFFERENCE_MINUEND_PLACES=635, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1932, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=657, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=101535, PETRI_PLACES=686, PETRI_TRANSITIONS=2043}
[2024-11-08 18:13:14,368 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 662 predicate places.
[2024-11-08 18:13:14,368 INFO L471 AbstractCegarLoop]: Abstraction has has 686 places, 2043 transitions, 101535 flow
[2024-11-08 18:13:14,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.869565217391305) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:13:14,368 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 18:13:14,368 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:13:14,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0
[2024-11-08 18:13:14,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22
[2024-11-08 18:13:14,569 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-08 18:13:14,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:13:14,569 INFO L85 PathProgramCache]: Analyzing trace with hash -670324918, now seen corresponding path program 16 times
[2024-11-08 18:13:14,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:13:14,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128807791]
[2024-11-08 18:13:14,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:13:14,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:13:14,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:13:15,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:13:15,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:13:15,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128807791]
[2024-11-08 18:13:15,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128807791] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 18:13:15,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939276064]
[2024-11-08 18:13:15,544 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-11-08 18:13:15,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:13:15,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:13:15,545 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:13:15,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process
[2024-11-08 18:13:15,612 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-11-08 18:13:15,612 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 18:13:15,613 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-11-08 18:13:15,614 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:13:16,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:13:16,211 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 18:13:20,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:13:20,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939276064] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 18:13:20,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 18:13:20,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23
[2024-11-08 18:13:20,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705609682]
[2024-11-08 18:13:20,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 18:13:20,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2024-11-08 18:13:20,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:13:20,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2024-11-08 18:13:20,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552
[2024-11-08 18:13:20,306 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24
[2024-11-08 18:13:20,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 686 places, 2043 transitions, 101535 flow. Second operand has 24 states, 24 states have (on average 4.791666666666667) internal successors, (115), 24 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:13:20,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 18:13:20,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24
[2024-11-08 18:13:20,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 18:13:36,644 INFO L124 PetriNetUnfolderBase]: 4541/8021 cut-off events.
[2024-11-08 18:13:36,644 INFO L125 PetriNetUnfolderBase]: For 738239/738239 co-relation queries the response was YES.
[2024-11-08 18:13:36,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157233 conditions, 8021 events. 4541/8021 cut-off events. For 738239/738239 co-relation queries the response was YES. Maximal size of possible extension queue 733. Compared 60698 event pairs, 66 based on Foata normal form. 10/8031 useless extension candidates. Maximal degree in co-relation 157022. Up to 3139 conditions per place.
[2024-11-08 18:13:36,991 INFO L140 encePairwiseOnDemand]: 9/24 looper letters, 601 selfloop transitions, 1640 changer transitions 73/2315 dead transitions.
[2024-11-08 18:13:36,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 720 places, 2315 transitions, 116001 flow
[2024-11-08 18:13:36,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states.
[2024-11-08 18:13:36,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states.
[2024-11-08 18:13:36,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 382 transitions.
[2024-11-08 18:13:36,993 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37896825396825395
[2024-11-08 18:13:36,993 INFO L175 Difference]: Start difference. First operand has 686 places, 2043 transitions, 101535 flow. Second operand 42 states and 382 transitions.
[2024-11-08 18:13:36,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 720 places, 2315 transitions, 116001 flow
[2024-11-08 18:13:57,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 700 places, 2315 transitions, 115586 flow, removed 136 selfloop flow, removed 20 redundant places.
[2024-11-08 18:13:57,983 INFO L231 Difference]: Finished difference. Result has 720 places, 2182 transitions, 114369 flow
[2024-11-08 18:13:57,985 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=100605, PETRI_DIFFERENCE_MINUEND_PLACES=659, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2033, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1499, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=114369, PETRI_PLACES=720, PETRI_TRANSITIONS=2182}
[2024-11-08 18:13:57,985 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 696 predicate places.
[2024-11-08 18:13:57,985 INFO L471 AbstractCegarLoop]: Abstraction has has 720 places, 2182 transitions, 114369 flow
[2024-11-08 18:13:57,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.791666666666667) internal successors, (115), 24 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:13:57,986 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 18:13:57,986 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:13:58,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0
[2024-11-08 18:13:58,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23
[2024-11-08 18:13:58,187 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-08 18:13:58,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:13:58,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1160582982, now seen corresponding path program 17 times
[2024-11-08 18:13:58,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:13:58,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968371565]
[2024-11-08 18:13:58,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:13:58,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:13:58,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:13:59,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:13:59,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:13:59,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968371565]
[2024-11-08 18:13:59,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968371565] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 18:13:59,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443306605]
[2024-11-08 18:13:59,065 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-11-08 18:13:59,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:13:59,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:13:59,066 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:13:59,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process
[2024-11-08 18:13:59,136 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-08 18:13:59,136 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 18:13:59,137 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-11-08 18:13:59,137 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:13:59,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:13:59,727 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 18:14:06,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:14:06,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443306605] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 18:14:06,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 18:14:06,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23
[2024-11-08 18:14:06,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880848930]
[2024-11-08 18:14:06,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 18:14:06,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2024-11-08 18:14:06,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:14:06,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2024-11-08 18:14:06,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=428, Unknown=1, NotChecked=0, Total=552
[2024-11-08 18:14:06,241 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24
[2024-11-08 18:14:06,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 720 places, 2182 transitions, 114369 flow. Second operand has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 24 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:14:06,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 18:14:06,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24
[2024-11-08 18:14:06,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 18:14:23,937 INFO L124 PetriNetUnfolderBase]: 4469/7902 cut-off events.
[2024-11-08 18:14:23,937 INFO L125 PetriNetUnfolderBase]: For 818900/818900 co-relation queries the response was YES.
[2024-11-08 18:14:24,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163767 conditions, 7902 events. 4469/7902 cut-off events. For 818900/818900 co-relation queries the response was YES. Maximal size of possible extension queue 718. Compared 59761 event pairs, 76 based on Foata normal form. 8/7910 useless extension candidates. Maximal degree in co-relation 163541. Up to 3101 conditions per place.
[2024-11-08 18:14:24,220 INFO L140 encePairwiseOnDemand]: 9/24 looper letters, 608 selfloop transitions, 1631 changer transitions 43/2283 dead transitions.
[2024-11-08 18:14:24,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 753 places, 2283 transitions, 120985 flow
[2024-11-08 18:14:24,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states.
[2024-11-08 18:14:24,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states.
[2024-11-08 18:14:24,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 395 transitions.
[2024-11-08 18:14:24,222 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38275193798449614
[2024-11-08 18:14:24,222 INFO L175 Difference]: Start difference. First operand has 720 places, 2182 transitions, 114369 flow. Second operand 43 states and 395 transitions.
[2024-11-08 18:14:24,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 753 places, 2283 transitions, 120985 flow
[2024-11-08 18:14:49,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 738 places, 2283 transitions, 120437 flow, removed 234 selfloop flow, removed 15 redundant places.
[2024-11-08 18:14:49,893 INFO L231 Difference]: Finished difference. Result has 746 places, 2181 transitions, 119726 flow
[2024-11-08 18:14:49,894 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=112577, PETRI_DIFFERENCE_MINUEND_PLACES=696, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1603, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=119726, PETRI_PLACES=746, PETRI_TRANSITIONS=2181}
[2024-11-08 18:14:49,895 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 722 predicate places.
[2024-11-08 18:14:49,895 INFO L471 AbstractCegarLoop]: Abstraction has has 746 places, 2181 transitions, 119726 flow
[2024-11-08 18:14:49,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 24 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:14:49,895 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 18:14:49,895 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:14:49,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0
[2024-11-08 18:14:50,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24
[2024-11-08 18:14:50,096 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-08 18:14:50,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:14:50,097 INFO L85 PathProgramCache]: Analyzing trace with hash -283969336, now seen corresponding path program 18 times
[2024-11-08 18:14:50,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:14:50,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729570976]
[2024-11-08 18:14:50,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:14:50,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:14:50,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:14:50,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:14:50,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:14:50,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729570976]
[2024-11-08 18:14:50,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729570976] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 18:14:50,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965792328]
[2024-11-08 18:14:50,907 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2024-11-08 18:14:50,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:14:50,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:14:50,908 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:14:50,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process
[2024-11-08 18:14:50,979 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s)
[2024-11-08 18:14:50,979 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 18:14:50,980 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-11-08 18:14:50,981 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:14:51,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:14:51,624 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 18:15:00,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:15:00,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965792328] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 18:15:00,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 18:15:00,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23
[2024-11-08 18:15:00,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742233118]
[2024-11-08 18:15:00,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 18:15:00,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2024-11-08 18:15:00,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:15:00,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2024-11-08 18:15:00,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552
[2024-11-08 18:15:00,485 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24
[2024-11-08 18:15:00,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 746 places, 2181 transitions, 119726 flow. Second operand has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 24 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:15:00,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 18:15:00,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24
[2024-11-08 18:15:00,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 18:15:22,024 INFO L124 PetriNetUnfolderBase]: 4606/8151 cut-off events.
[2024-11-08 18:15:22,024 INFO L125 PetriNetUnfolderBase]: For 923807/923807 co-relation queries the response was YES.
[2024-11-08 18:15:22,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175702 conditions, 8151 events. 4606/8151 cut-off events. For 923807/923807 co-relation queries the response was YES. Maximal size of possible extension queue 735. Compared 62145 event pairs, 48 based on Foata normal form. 2/8153 useless extension candidates. Maximal degree in co-relation 175478. Up to 3724 conditions per place.
[2024-11-08 18:15:22,310 INFO L140 encePairwiseOnDemand]: 9/24 looper letters, 789 selfloop transitions, 1547 changer transitions 48/2385 dead transitions.
[2024-11-08 18:15:22,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 778 places, 2385 transitions, 131724 flow
[2024-11-08 18:15:22,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states.
[2024-11-08 18:15:22,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states.
[2024-11-08 18:15:22,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 327 transitions.
[2024-11-08 18:15:22,312 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36824324324324326
[2024-11-08 18:15:22,312 INFO L175 Difference]: Start difference. First operand has 746 places, 2181 transitions, 119726 flow. Second operand 37 states and 327 transitions.
[2024-11-08 18:15:22,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 778 places, 2385 transitions, 131724 flow
[2024-11-08 18:15:50,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 762 places, 2385 transitions, 131286 flow, removed 148 selfloop flow, removed 16 redundant places.
[2024-11-08 18:15:50,512 INFO L231 Difference]: Finished difference. Result has 777 places, 2265 transitions, 130022 flow
[2024-11-08 18:15:50,514 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=119296, PETRI_DIFFERENCE_MINUEND_PLACES=726, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1466, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=687, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=130022, PETRI_PLACES=777, PETRI_TRANSITIONS=2265}
[2024-11-08 18:15:50,514 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 753 predicate places.
[2024-11-08 18:15:50,515 INFO L471 AbstractCegarLoop]: Abstraction has has 777 places, 2265 transitions, 130022 flow
[2024-11-08 18:15:50,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 24 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:15:50,515 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 18:15:50,515 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:15:50,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0
[2024-11-08 18:15:50,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25
[2024-11-08 18:15:50,716 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-08 18:15:50,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:15:50,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1845362404, now seen corresponding path program 19 times
[2024-11-08 18:15:50,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:15:50,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84867205]
[2024-11-08 18:15:50,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:15:50,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:15:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:15:51,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:15:51,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:15:51,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84867205]
[2024-11-08 18:15:51,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84867205] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 18:15:51,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412862157]
[2024-11-08 18:15:51,679 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2024-11-08 18:15:51,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:15:51,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:15:51,680 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:15:51,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process
[2024-11-08 18:15:51,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:15:51,735 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-11-08 18:15:51,736 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:15:52,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:15:52,304 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 18:15:54,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:15:54,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412862157] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 18:15:54,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 18:15:54,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23
[2024-11-08 18:15:54,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846599080]
[2024-11-08 18:15:54,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 18:15:54,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2024-11-08 18:15:54,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:15:54,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2024-11-08 18:15:54,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552
[2024-11-08 18:15:54,169 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24
[2024-11-08 18:15:54,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 777 places, 2265 transitions, 130022 flow. Second operand has 24 states, 24 states have (on average 4.791666666666667) internal successors, (115), 24 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:15:54,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 18:15:54,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24
[2024-11-08 18:15:54,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 18:16:14,194 INFO L124 PetriNetUnfolderBase]: 4908/8665 cut-off events.
[2024-11-08 18:16:14,195 INFO L125 PetriNetUnfolderBase]: For 1067602/1067602 co-relation queries the response was YES.
[2024-11-08 18:16:14,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195101 conditions, 8665 events. 4908/8665 cut-off events. For 1067602/1067602 co-relation queries the response was YES. Maximal size of possible extension queue 768. Compared 66405 event pairs, 77 based on Foata normal form. 13/8678 useless extension candidates. Maximal degree in co-relation 194864. Up to 4472 conditions per place.
[2024-11-08 18:16:14,563 INFO L140 encePairwiseOnDemand]: 9/24 looper letters, 933 selfloop transitions, 1544 changer transitions 62/2540 dead transitions.
[2024-11-08 18:16:14,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 816 places, 2540 transitions, 146943 flow
[2024-11-08 18:16:14,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states.
[2024-11-08 18:16:14,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states.
[2024-11-08 18:16:14,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 388 transitions.
[2024-11-08 18:16:14,690 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3592592592592593
[2024-11-08 18:16:14,690 INFO L175 Difference]: Start difference. First operand has 777 places, 2265 transitions, 130022 flow. Second operand 45 states and 388 transitions.
[2024-11-08 18:16:14,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 816 places, 2540 transitions, 146943 flow
[2024-11-08 18:16:47,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 798 places, 2540 transitions, 146142 flow, removed 125 selfloop flow, removed 18 redundant places.
[2024-11-08 18:16:47,431 INFO L231 Difference]: Finished difference. Result has 820 places, 2415 transitions, 144311 flow
[2024-11-08 18:16:47,432 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=129344, PETRI_DIFFERENCE_MINUEND_PLACES=754, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1407, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=812, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=144311, PETRI_PLACES=820, PETRI_TRANSITIONS=2415}
[2024-11-08 18:16:47,433 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 796 predicate places.
[2024-11-08 18:16:47,433 INFO L471 AbstractCegarLoop]: Abstraction has has 820 places, 2415 transitions, 144311 flow
[2024-11-08 18:16:47,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.791666666666667) internal successors, (115), 24 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:16:47,433 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 18:16:47,434 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:16:47,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0
[2024-11-08 18:16:47,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26
[2024-11-08 18:16:47,635 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-08 18:16:47,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:16:47,635 INFO L85 PathProgramCache]: Analyzing trace with hash -618696992, now seen corresponding path program 20 times
[2024-11-08 18:16:47,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:16:47,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116588746]
[2024-11-08 18:16:47,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:16:47,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:16:47,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:16:48,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:16:48,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:16:48,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116588746]
[2024-11-08 18:16:48,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116588746] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 18:16:48,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573569721]
[2024-11-08 18:16:48,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-08 18:16:48,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:16:48,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:16:48,576 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:16:48,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process
[2024-11-08 18:16:48,644 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-08 18:16:48,644 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 18:16:48,645 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-11-08 18:16:48,646 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:16:49,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:16:49,265 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 18:16:52,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:16:52,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573569721] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 18:16:52,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 18:16:52,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23
[2024-11-08 18:16:52,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705119910]
[2024-11-08 18:16:52,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 18:16:52,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2024-11-08 18:16:52,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:16:52,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2024-11-08 18:16:52,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552
[2024-11-08 18:16:52,075 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24
[2024-11-08 18:16:52,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 820 places, 2415 transitions, 144311 flow. Second operand has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 24 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:16:52,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 18:16:52,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24
[2024-11-08 18:16:52,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 18:17:13,538 INFO L124 PetriNetUnfolderBase]: 4954/8752 cut-off events.
[2024-11-08 18:17:13,538 INFO L125 PetriNetUnfolderBase]: For 1199617/1199617 co-relation queries the response was YES.
[2024-11-08 18:17:13,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205037 conditions, 8752 events. 4954/8752 cut-off events. For 1199617/1199617 co-relation queries the response was YES. Maximal size of possible extension queue 769. Compared 67141 event pairs, 85 based on Foata normal form. 11/8763 useless extension candidates. Maximal degree in co-relation 204786. Up to 4538 conditions per place.
[2024-11-08 18:17:14,012 INFO L140 encePairwiseOnDemand]: 9/24 looper letters, 973 selfloop transitions, 1532 changer transitions 41/2547 dead transitions.
[2024-11-08 18:17:14,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 847 places, 2547 transitions, 153684 flow
[2024-11-08 18:17:14,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states.
[2024-11-08 18:17:14,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states.
[2024-11-08 18:17:14,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 340 transitions.
[2024-11-08 18:17:14,013 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37280701754385964
[2024-11-08 18:17:14,013 INFO L175 Difference]: Start difference. First operand has 820 places, 2415 transitions, 144311 flow. Second operand 38 states and 340 transitions.
[2024-11-08 18:17:14,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 847 places, 2547 transitions, 153684 flow
[2024-11-08 18:17:52,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 826 places, 2547 transitions, 153107 flow, removed 227 selfloop flow, removed 21 redundant places.
[2024-11-08 18:17:52,491 INFO L231 Difference]: Finished difference. Result has 840 places, 2451 transitions, 152202 flow
[2024-11-08 18:17:52,493 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=141849, PETRI_DIFFERENCE_MINUEND_PLACES=789, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1467, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=887, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=152202, PETRI_PLACES=840, PETRI_TRANSITIONS=2451}
[2024-11-08 18:17:52,493 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 816 predicate places.
[2024-11-08 18:17:52,493 INFO L471 AbstractCegarLoop]: Abstraction has has 840 places, 2451 transitions, 152202 flow
[2024-11-08 18:17:52,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 24 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:17:52,494 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 18:17:52,494 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:17:52,513 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0
[2024-11-08 18:17:52,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27
[2024-11-08 18:17:52,695 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-08 18:17:52,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:17:52,695 INFO L85 PathProgramCache]: Analyzing trace with hash 457014164, now seen corresponding path program 21 times
[2024-11-08 18:17:52,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:17:52,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698274304]
[2024-11-08 18:17:52,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:17:52,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:17:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:17:53,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:17:53,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:17:53,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698274304]
[2024-11-08 18:17:53,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698274304] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 18:17:53,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802426565]
[2024-11-08 18:17:53,740 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-08 18:17:53,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:17:53,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:17:53,742 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:17:53,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process
[2024-11-08 18:17:53,814 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2024-11-08 18:17:53,814 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 18:17:53,815 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-11-08 18:17:53,816 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:17:54,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:17:54,392 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 18:17:56,134 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:17:56,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802426565] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 18:17:56,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 18:17:56,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23
[2024-11-08 18:17:56,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736110192]
[2024-11-08 18:17:56,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 18:17:56,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2024-11-08 18:17:56,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:17:56,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2024-11-08 18:17:56,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552
[2024-11-08 18:17:56,484 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24
[2024-11-08 18:17:56,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 840 places, 2451 transitions, 152202 flow. Second operand has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 24 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:17:56,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 18:17:56,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24
[2024-11-08 18:17:56,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 18:18:19,347 INFO L124 PetriNetUnfolderBase]: 5252/9245 cut-off events.
[2024-11-08 18:18:19,347 INFO L125 PetriNetUnfolderBase]: For 1389905/1389905 co-relation queries the response was YES.
[2024-11-08 18:18:19,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225111 conditions, 9245 events. 5252/9245 cut-off events. For 1389905/1389905 co-relation queries the response was YES. Maximal size of possible extension queue 812. Compared 71456 event pairs, 71 based on Foata normal form. 19/9264 useless extension candidates. Maximal degree in co-relation 224858. Up to 4785 conditions per place.
[2024-11-08 18:18:19,936 INFO L140 encePairwiseOnDemand]: 9/24 looper letters, 1003 selfloop transitions, 1652 changer transitions 47/2703 dead transitions.
[2024-11-08 18:18:19,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 865 places, 2703 transitions, 169622 flow
[2024-11-08 18:18:19,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states.
[2024-11-08 18:18:19,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states.
[2024-11-08 18:18:19,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 343 transitions.
[2024-11-08 18:18:19,937 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37609649122807015
[2024-11-08 18:18:19,937 INFO L175 Difference]: Start difference. First operand has 840 places, 2451 transitions, 152202 flow. Second operand 38 states and 343 transitions.
[2024-11-08 18:18:19,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 865 places, 2703 transitions, 169622 flow
[2024-11-08 18:19:03,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 846 places, 2703 transitions, 169255 flow, removed 133 selfloop flow, removed 19 redundant places.
[2024-11-08 18:19:03,445 INFO L231 Difference]: Finished difference. Result has 864 places, 2583 transitions, 167237 flow
[2024-11-08 18:19:03,447 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=150978, PETRI_DIFFERENCE_MINUEND_PLACES=809, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1519, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=872, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=167237, PETRI_PLACES=864, PETRI_TRANSITIONS=2583}
[2024-11-08 18:19:03,447 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 840 predicate places.
[2024-11-08 18:19:03,447 INFO L471 AbstractCegarLoop]: Abstraction has has 864 places, 2583 transitions, 167237 flow
[2024-11-08 18:19:03,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.833333333333333) internal successors, (116), 24 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:19:03,448 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 18:19:03,448 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:19:03,463 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0
[2024-11-08 18:19:03,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28
[2024-11-08 18:19:03,649 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-08 18:19:03,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:19:03,649 INFO L85 PathProgramCache]: Analyzing trace with hash 115511260, now seen corresponding path program 22 times
[2024-11-08 18:19:03,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:19:03,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77148913]
[2024-11-08 18:19:03,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:19:03,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:19:03,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:19:04,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:19:04,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:19:04,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77148913]
[2024-11-08 18:19:04,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77148913] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 18:19:04,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966708161]
[2024-11-08 18:19:04,537 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-11-08 18:19:04,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:19:04,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:19:04,538 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:19:04,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process
[2024-11-08 18:19:04,673 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-11-08 18:19:04,673 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 18:19:04,674 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-11-08 18:19:04,675 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:19:05,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:19:05,322 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 18:19:07,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:19:07,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966708161] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 18:19:07,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 18:19:07,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23
[2024-11-08 18:19:07,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040852384]
[2024-11-08 18:19:07,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 18:19:07,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2024-11-08 18:19:07,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:19:07,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2024-11-08 18:19:07,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552
[2024-11-08 18:19:07,209 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24
[2024-11-08 18:19:07,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 864 places, 2583 transitions, 167237 flow. Second operand has 24 states, 24 states have (on average 4.791666666666667) internal successors, (115), 24 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:19:07,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 18:19:07,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24
[2024-11-08 18:19:07,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2024-11-08 18:19:30,679 INFO L124 PetriNetUnfolderBase]: 5237/9245 cut-off events.
[2024-11-08 18:19:30,679 INFO L125 PetriNetUnfolderBase]: For 1509567/1509567 co-relation queries the response was YES.
[2024-11-08 18:19:31,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233410 conditions, 9245 events. 5237/9245 cut-off events. For 1509567/1509567 co-relation queries the response was YES. Maximal size of possible extension queue 810. Compared 71630 event pairs, 70 based on Foata normal form. 2/9247 useless extension candidates. Maximal degree in co-relation 233145. Up to 5381 conditions per place.
[2024-11-08 18:19:31,235 INFO L140 encePairwiseOnDemand]: 10/24 looper letters, 1128 selfloop transitions, 1516 changer transitions 26/2671 dead transitions.
[2024-11-08 18:19:31,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 891 places, 2671 transitions, 175023 flow
[2024-11-08 18:19:31,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states.
[2024-11-08 18:19:31,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2024-11-08 18:19:31,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 289 transitions.
[2024-11-08 18:19:31,236 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667
[2024-11-08 18:19:31,237 INFO L175 Difference]: Start difference. First operand has 864 places, 2583 transitions, 167237 flow. Second operand 34 states and 289 transitions.
[2024-11-08 18:19:31,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 891 places, 2671 transitions, 175023 flow
[2024-11-08 18:20:21,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 880 places, 2671 transitions, 174517 flow, removed 227 selfloop flow, removed 11 redundant places.
[2024-11-08 18:20:21,375 INFO L231 Difference]: Finished difference. Result has 889 places, 2597 transitions, 173607 flow
[2024-11-08 18:20:21,378 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=166795, PETRI_DIFFERENCE_MINUEND_PLACES=847, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1500, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1073, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=173607, PETRI_PLACES=889, PETRI_TRANSITIONS=2597}
[2024-11-08 18:20:21,378 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 865 predicate places.
[2024-11-08 18:20:21,379 INFO L471 AbstractCegarLoop]: Abstraction has has 889 places, 2597 transitions, 173607 flow
[2024-11-08 18:20:21,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.791666666666667) internal successors, (115), 24 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:20:21,379 INFO L196 CegarLoopForPetriNet]: Found error trace
[2024-11-08 18:20:21,379 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-08 18:20:21,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0
[2024-11-08 18:20:21,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:20:21,580 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2024-11-08 18:20:21,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier
[2024-11-08 18:20:21,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1648638462, now seen corresponding path program 23 times
[2024-11-08 18:20:21,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-08 18:20:21,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112070469]
[2024-11-08 18:20:21,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-08 18:20:21,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-08 18:20:21,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-08 18:20:22,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:20:22,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-08 18:20:22,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112070469]
[2024-11-08 18:20:22,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112070469] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-08 18:20:22,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344504481]
[2024-11-08 18:20:22,597 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2024-11-08 18:20:22,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-08 18:20:22,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3
[2024-11-08 18:20:22,599 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-08 18:20:22,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83bed86b-b132-4940-bb64-4eea2f31db01/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process
[2024-11-08 18:20:22,677 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s)
[2024-11-08 18:20:22,677 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-08 18:20:22,678 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-11-08 18:20:22,679 INFO L278 TraceCheckSpWp]: Computing forward predicates...
[2024-11-08 18:20:23,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:20:23,243 INFO L311 TraceCheckSpWp]: Computing backward predicates...
[2024-11-08 18:20:25,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-08 18:20:25,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344504481] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-08 18:20:25,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-08 18:20:25,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 22
[2024-11-08 18:20:25,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644621485]
[2024-11-08 18:20:25,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-08 18:20:25,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2024-11-08 18:20:25,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-08 18:20:25,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2024-11-08 18:20:25,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506
[2024-11-08 18:20:25,392 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24
[2024-11-08 18:20:25,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 889 places, 2597 transitions, 173607 flow. Second operand has 23 states, 23 states have (on average 4.826086956521739) internal successors, (111), 23 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-08 18:20:25,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2024-11-08 18:20:25,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24
[2024-11-08 18:20:25,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand