./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/mult-dist.wvr.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 9bd2c7ff
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_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/mult-dist.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c31f1603fd15e011308b2e8fcd1cd45b23f0b00ac0b8b466c4f212460081639c
--- Real Ultimate output ---
This is Ultimate 0.2.3-dev-9bd2c7f
[2023-11-19 07:35:37,699 INFO L188 SettingsManager]: Resetting all preferences to default values...
[2023-11-19 07:35:37,822 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf
[2023-11-19 07:35:37,826 WARN L101 SettingsManager]: Preference file contains the following unknown settings:
[2023-11-19 07:35:37,827 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-11-19 07:35:37,874 INFO L130 SettingsManager]: Preferences different from defaults after loading the file:
[2023-11-19 07:35:37,875 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-11-19 07:35:37,876 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-11-19 07:35:37,878 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-11-19 07:35:37,883 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-11-19 07:35:37,885 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-11-19 07:35:37,885 INFO L153 SettingsManager]: * Create parallel compositions if possible=false
[2023-11-19 07:35:37,886 INFO L153 SettingsManager]: * Use SBE=true
[2023-11-19 07:35:37,888 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-11-19 07:35:37,888 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2023-11-19 07:35:37,888 INFO L153 SettingsManager]: * sizeof long=4
[2023-11-19 07:35:37,889 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true
[2023-11-19 07:35:37,889 INFO L153 SettingsManager]: * sizeof POINTER=4
[2023-11-19 07:35:37,890 INFO L153 SettingsManager]: * Check division by zero=IGNORE
[2023-11-19 07:35:37,890 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2023-11-19 07:35:37,890 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-11-19 07:35:37,891 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2023-11-19 07:35:37,891 INFO L153 SettingsManager]: * sizeof long double=12
[2023-11-19 07:35:37,892 INFO L153 SettingsManager]: * Check if freed pointer was valid=false
[2023-11-19 07:35:37,892 INFO L153 SettingsManager]: * Use constant arrays=true
[2023-11-19 07:35:37,893 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-11-19 07:35:37,894 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements
[2023-11-19 07:35:37,894 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode
[2023-11-19 07:35:37,894 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 07:35:37,895 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-11-19 07:35:37,896 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2023-11-19 07:35:37,897 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads
[2023-11-19 07:35:37,897 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL
[2023-11-19 07:35:37,897 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-11-19 07:35:37,897 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2023-11-19 07:35:37,898 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-11-19 07:35:37,898 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2023-11-19 07:35:37,898 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2023-11-19 07:35:37,898 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-11-19 07:35:37,899 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_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c31f1603fd15e011308b2e8fcd1cd45b23f0b00ac0b8b466c4f212460081639c
[2023-11-19 07:35:38,239 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2023-11-19 07:35:38,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-11-19 07:35:38,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-11-19 07:35:38,278 INFO L270 PluginConnector]: Initializing CDTParser...
[2023-11-19 07:35:38,284 INFO L274 PluginConnector]: CDTParser initialized
[2023-11-19 07:35:38,286 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/mult-dist.wvr.c
[2023-11-19 07:35:41,473 INFO L533 CDTParser]: Created temporary CDT project at NULL
[2023-11-19 07:35:41,754 INFO L384 CDTParser]: Found 1 translation units.
[2023-11-19 07:35:41,754 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/sv-benchmarks/c/weaver/mult-dist.wvr.c
[2023-11-19 07:35:41,766 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/data/f1de53ba5/83a7891bbb3f493eabf38fdfba2bbfc0/FLAGf02822555
[2023-11-19 07:35:41,785 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/data/f1de53ba5/83a7891bbb3f493eabf38fdfba2bbfc0
[2023-11-19 07:35:41,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-11-19 07:35:41,795 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements.
[2023-11-19 07:35:41,799 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-11-19 07:35:41,800 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-11-19 07:35:41,805 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized
[2023-11-19 07:35:41,806 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:35:41" (1/1) ...
[2023-11-19 07:35:41,807 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28fbf5a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:41, skipping insertion in model container
[2023-11-19 07:35:41,807 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:35:41" (1/1) ...
[2023-11-19 07:35:41,838 INFO L177 MainTranslator]: Built tables and reachable declarations
[2023-11-19 07:35:42,116 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/sv-benchmarks/c/weaver/mult-dist.wvr.c[2155,2168]
[2023-11-19 07:35:42,123 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 07:35:42,135 INFO L202 MainTranslator]: Completed pre-run
[2023-11-19 07:35:42,172 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/sv-benchmarks/c/weaver/mult-dist.wvr.c[2155,2168]
[2023-11-19 07:35:42,176 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-11-19 07:35:42,193 INFO L206 MainTranslator]: Completed translation
[2023-11-19 07:35:42,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:42 WrapperNode
[2023-11-19 07:35:42,194 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-11-19 07:35:42,195 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-11-19 07:35:42,195 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-11-19 07:35:42,196 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized
[2023-11-19 07:35:42,204 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:42" (1/1) ...
[2023-11-19 07:35:42,222 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:42" (1/1) ...
[2023-11-19 07:35:42,251 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 72
[2023-11-19 07:35:42,251 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-11-19 07:35:42,252 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-11-19 07:35:42,253 INFO L270 PluginConnector]: Initializing Boogie Preprocessor...
[2023-11-19 07:35:42,253 INFO L274 PluginConnector]: Boogie Preprocessor initialized
[2023-11-19 07:35:42,263 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:42" (1/1) ...
[2023-11-19 07:35:42,264 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:42" (1/1) ...
[2023-11-19 07:35:42,270 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:42" (1/1) ...
[2023-11-19 07:35:42,270 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:42" (1/1) ...
[2023-11-19 07:35:42,286 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:42" (1/1) ...
[2023-11-19 07:35:42,295 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:42" (1/1) ...
[2023-11-19 07:35:42,296 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:42" (1/1) ...
[2023-11-19 07:35:42,298 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:42" (1/1) ...
[2023-11-19 07:35:42,300 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-11-19 07:35:42,301 INFO L112 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-11-19 07:35:42,302 INFO L270 PluginConnector]: Initializing RCFGBuilder...
[2023-11-19 07:35:42,302 INFO L274 PluginConnector]: RCFGBuilder initialized
[2023-11-19 07:35:42,303 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:42" (1/1) ...
[2023-11-19 07:35:42,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-11-19 07:35:42,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:35:42,336 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-11-19 07:35:42,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-11-19 07:35:42,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-11-19 07:35:42,383 INFO L130 BoogieDeclarations]: Found specification of procedure thread1
[2023-11-19 07:35:42,383 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1
[2023-11-19 07:35:42,384 INFO L130 BoogieDeclarations]: Found specification of procedure thread2
[2023-11-19 07:35:42,384 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2
[2023-11-19 07:35:42,384 INFO L130 BoogieDeclarations]: Found specification of procedure thread3
[2023-11-19 07:35:42,384 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3
[2023-11-19 07:35:42,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2023-11-19 07:35:42,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-11-19 07:35:42,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2023-11-19 07:35:42,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-11-19 07:35:42,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-11-19 07:35:42,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2023-11-19 07:35:42,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-11-19 07:35:42,387 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement
[2023-11-19 07:35:42,502 INFO L236 CfgBuilder]: Building ICFG
[2023-11-19 07:35:42,504 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation
[2023-11-19 07:35:42,759 INFO L277 CfgBuilder]: Performing block encoding
[2023-11-19 07:35:42,776 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-11-19 07:35:42,776 INFO L302 CfgBuilder]: Removed 3 assume(true) statements.
[2023-11-19 07:35:42,781 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:42 BoogieIcfgContainer
[2023-11-19 07:35:42,781 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-11-19 07:35:42,785 INFO L112 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-11-19 07:35:42,785 INFO L270 PluginConnector]: Initializing TraceAbstraction...
[2023-11-19 07:35:42,793 INFO L274 PluginConnector]: TraceAbstraction initialized
[2023-11-19 07:35:42,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:35:41" (1/3) ...
[2023-11-19 07:35:42,795 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58ea7bd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:42, skipping insertion in model container
[2023-11-19 07:35:42,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:42" (2/3) ...
[2023-11-19 07:35:42,797 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58ea7bd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:42, skipping insertion in model container
[2023-11-19 07:35:42,797 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:42" (3/3) ...
[2023-11-19 07:35:42,800 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-dist.wvr.c
[2023-11-19 07:35:42,810 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2023-11-19 07:35:42,825 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-11-19 07:35:42,825 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-11-19 07:35:42,826 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2023-11-19 07:35:42,947 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions.
[2023-11-19 07:35:43,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 112 transitions, 245 flow
[2023-11-19 07:35:43,118 INFO L124 PetriNetUnfolderBase]: 7/109 cut-off events.
[2023-11-19 07:35:43,119 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES.
[2023-11-19 07:35:43,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 109 events. 7/109 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 85 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place.
[2023-11-19 07:35:43,126 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 112 transitions, 245 flow
[2023-11-19 07:35:43,131 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 98 transitions, 214 flow
[2023-11-19 07:35:43,134 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation.
[2023-11-19 07:35:43,145 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 98 transitions, 214 flow
[2023-11-19 07:35:43,148 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 98 transitions, 214 flow
[2023-11-19 07:35:43,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 98 transitions, 214 flow
[2023-11-19 07:35:43,183 INFO L124 PetriNetUnfolderBase]: 7/98 cut-off events.
[2023-11-19 07:35:43,183 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES.
[2023-11-19 07:35:43,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 98 events. 7/98 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 84 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place.
[2023-11-19 07:35:43,187 INFO L119 LiptonReduction]: Number of co-enabled transitions 1728
[2023-11-19 07:35:46,626 INFO L134 LiptonReduction]: Checked pairs total: 1624
[2023-11-19 07:35:46,626 INFO L136 LiptonReduction]: Total number of compositions: 84
[2023-11-19 07:35:46,643 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-11-19 07:35:46,650 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@d125b8e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-11-19 07:35:46,650 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations.
[2023-11-19 07:35:46,658 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder.
[2023-11-19 07:35:46,659 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events.
[2023-11-19 07:35:46,659 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES.
[2023-11-19 07:35:46,659 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:35:46,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:35:46,660 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] ===
[2023-11-19 07:35:46,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:35:46,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1867336189, now seen corresponding path program 1 times
[2023-11-19 07:35:46,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:35:46,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26497056]
[2023-11-19 07:35:46,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:35:46,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:35:46,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:35:47,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:35:47,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:35:47,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26497056]
[2023-11-19 07:35:47,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26497056] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:35:47,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:35:47,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-11-19 07:35:47,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551243771]
[2023-11-19 07:35:47,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:35:47,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-11-19 07:35:47,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:35:47,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-11-19 07:35:47,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-11-19 07:35:47,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 196
[2023-11-19 07:35:47,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:35:47,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:35:47,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 196
[2023-11-19 07:35:47,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:35:47,717 INFO L124 PetriNetUnfolderBase]: 428/630 cut-off events.
[2023-11-19 07:35:47,717 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES.
[2023-11-19 07:35:47,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1337 conditions, 630 events. 428/630 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2010 event pairs, 138 based on Foata normal form. 1/467 useless extension candidates. Maximal degree in co-relation 1030. Up to 389 conditions per place.
[2023-11-19 07:35:47,730 INFO L140 encePairwiseOnDemand]: 191/196 looper letters, 36 selfloop transitions, 4 changer transitions 1/41 dead transitions.
[2023-11-19 07:35:47,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 41 transitions, 197 flow
[2023-11-19 07:35:47,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-11-19 07:35:47,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-11-19 07:35:47,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 336 transitions.
[2023-11-19 07:35:47,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714
[2023-11-19 07:35:47,756 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 336 transitions.
[2023-11-19 07:35:47,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 336 transitions.
[2023-11-19 07:35:47,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:35:47,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 336 transitions.
[2023-11-19 07:35:47,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:35:47,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:35:47,776 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:35:47,778 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 62 flow. Second operand 3 states and 336 transitions.
[2023-11-19 07:35:47,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 41 transitions, 197 flow
[2023-11-19 07:35:47,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 41 transitions, 175 flow, removed 0 selfloop flow, removed 6 redundant places.
[2023-11-19 07:35:47,788 INFO L231 Difference]: Finished difference. Result has 26 places, 25 transitions, 76 flow
[2023-11-19 07:35:47,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=26, PETRI_TRANSITIONS=25}
[2023-11-19 07:35:47,795 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -3 predicate places.
[2023-11-19 07:35:47,795 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 25 transitions, 76 flow
[2023-11-19 07:35:47,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:35:47,796 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:35:47,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:35:47,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-11-19 07:35:47,797 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] ===
[2023-11-19 07:35:47,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:35:47,799 INFO L85 PathProgramCache]: Analyzing trace with hash -861812848, now seen corresponding path program 1 times
[2023-11-19 07:35:47,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:35:47,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371877413]
[2023-11-19 07:35:47,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:35:47,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:35:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:35:48,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:35:48,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:35:48,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371877413]
[2023-11-19 07:35:48,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371877413] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:35:48,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:35:48,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-19 07:35:48,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942230287]
[2023-11-19 07:35:48,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:35:48,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-19 07:35:48,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:35:48,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-19 07:35:48,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42
[2023-11-19 07:35:48,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 196
[2023-11-19 07:35:48,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 76 flow. Second operand has 7 states, 7 states have (on average 85.85714285714286) internal successors, (601), 7 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:35:48,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:35:48,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 196
[2023-11-19 07:35:48,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:35:48,672 INFO L124 PetriNetUnfolderBase]: 586/836 cut-off events.
[2023-11-19 07:35:48,673 INFO L125 PetriNetUnfolderBase]: For 171/171 co-relation queries the response was YES.
[2023-11-19 07:35:48,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2065 conditions, 836 events. 586/836 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2736 event pairs, 231 based on Foata normal form. 2/838 useless extension candidates. Maximal degree in co-relation 597. Up to 620 conditions per place.
[2023-11-19 07:35:48,682 INFO L140 encePairwiseOnDemand]: 187/196 looper letters, 49 selfloop transitions, 18 changer transitions 3/70 dead transitions.
[2023-11-19 07:35:48,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 70 transitions, 353 flow
[2023-11-19 07:35:48,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2023-11-19 07:35:48,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states.
[2023-11-19 07:35:48,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 642 transitions.
[2023-11-19 07:35:48,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4679300291545189
[2023-11-19 07:35:48,688 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 642 transitions.
[2023-11-19 07:35:48,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 642 transitions.
[2023-11-19 07:35:48,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:35:48,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 642 transitions.
[2023-11-19 07:35:48,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 91.71428571428571) internal successors, (642), 7 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:35:48,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:35:48,700 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:35:48,702 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 76 flow. Second operand 7 states and 642 transitions.
[2023-11-19 07:35:48,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 70 transitions, 353 flow
[2023-11-19 07:35:48,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 70 transitions, 340 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-11-19 07:35:48,707 INFO L231 Difference]: Finished difference. Result has 35 places, 41 transitions, 200 flow
[2023-11-19 07:35:48,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=200, PETRI_PLACES=35, PETRI_TRANSITIONS=41}
[2023-11-19 07:35:48,709 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 6 predicate places.
[2023-11-19 07:35:48,710 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 41 transitions, 200 flow
[2023-11-19 07:35:48,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.85714285714286) internal successors, (601), 7 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:35:48,711 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:35:48,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:35:48,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-11-19 07:35:48,718 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] ===
[2023-11-19 07:35:48,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:35:48,722 INFO L85 PathProgramCache]: Analyzing trace with hash -816449826, now seen corresponding path program 2 times
[2023-11-19 07:35:48,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:35:48,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804123122]
[2023-11-19 07:35:48,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:35:48,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:35:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:35:49,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:35:49,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:35:49,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804123122]
[2023-11-19 07:35:49,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804123122] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 07:35:49,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287405252]
[2023-11-19 07:35:49,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2023-11-19 07:35:49,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:35:49,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:35:49,099 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:35:49,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-11-19 07:35:49,295 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2023-11-19 07:35:49,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-11-19 07:35:49,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 14 conjunts are in the unsatisfiable core
[2023-11-19 07:35:49,303 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:35:49,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:35:49,556 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 07:35:50,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:35:50,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287405252] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-19 07:35:50,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2023-11-19 07:35:50,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 14
[2023-11-19 07:35:50,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925179176]
[2023-11-19 07:35:50,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:35:50,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-19 07:35:50,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:35:50,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-19 07:35:50,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182
[2023-11-19 07:35:50,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 196
[2023-11-19 07:35:50,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 41 transitions, 200 flow. Second operand has 6 states, 6 states have (on average 90.33333333333333) internal successors, (542), 6 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:35:50,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:35:50,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 196
[2023-11-19 07:35:50,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:35:51,292 INFO L124 PetriNetUnfolderBase]: 953/1379 cut-off events.
[2023-11-19 07:35:51,292 INFO L125 PetriNetUnfolderBase]: For 1353/1353 co-relation queries the response was YES.
[2023-11-19 07:35:51,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4398 conditions, 1379 events. 953/1379 cut-off events. For 1353/1353 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5141 event pairs, 257 based on Foata normal form. 8/1387 useless extension candidates. Maximal degree in co-relation 2476. Up to 504 conditions per place.
[2023-11-19 07:35:51,308 INFO L140 encePairwiseOnDemand]: 189/196 looper letters, 102 selfloop transitions, 21 changer transitions 0/123 dead transitions.
[2023-11-19 07:35:51,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 123 transitions, 746 flow
[2023-11-19 07:35:51,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2023-11-19 07:35:51,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2023-11-19 07:35:51,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 799 transitions.
[2023-11-19 07:35:51,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5095663265306123
[2023-11-19 07:35:51,312 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 799 transitions.
[2023-11-19 07:35:51,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 799 transitions.
[2023-11-19 07:35:51,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:35:51,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 799 transitions.
[2023-11-19 07:35:51,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 99.875) internal successors, (799), 8 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:35:51,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 196.0) internal successors, (1764), 9 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:35:51,322 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 196.0) internal successors, (1764), 9 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:35:51,322 INFO L175 Difference]: Start difference. First operand has 35 places, 41 transitions, 200 flow. Second operand 8 states and 799 transitions.
[2023-11-19 07:35:51,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 123 transitions, 746 flow
[2023-11-19 07:35:51,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 123 transitions, 724 flow, removed 11 selfloop flow, removed 0 redundant places.
[2023-11-19 07:35:51,333 INFO L231 Difference]: Finished difference. Result has 46 places, 55 transitions, 333 flow
[2023-11-19 07:35:51,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=333, PETRI_PLACES=46, PETRI_TRANSITIONS=55}
[2023-11-19 07:35:51,334 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places.
[2023-11-19 07:35:51,334 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 55 transitions, 333 flow
[2023-11-19 07:35:51,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 90.33333333333333) internal successors, (542), 6 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:35:51,335 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:35:51,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:35:51,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2023-11-19 07:35:51,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:35:51,542 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] ===
[2023-11-19 07:35:51,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:35:51,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1493911886, now seen corresponding path program 1 times
[2023-11-19 07:35:51,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:35:51,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570570837]
[2023-11-19 07:35:51,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:35:51,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:35:51,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:35:51,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:35:51,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:35:51,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570570837]
[2023-11-19 07:35:51,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570570837] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 07:35:51,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160450151]
[2023-11-19 07:35:51,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:35:51,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:35:51,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:35:51,885 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:35:51,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-11-19 07:35:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:35:52,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 14 conjunts are in the unsatisfiable core
[2023-11-19 07:35:52,086 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:35:52,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:35:52,235 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 07:35:52,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:35:52,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160450151] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-19 07:35:52,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-11-19 07:35:52,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15
[2023-11-19 07:35:52,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68492562]
[2023-11-19 07:35:52,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-11-19 07:35:52,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2023-11-19 07:35:52,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:35:52,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2023-11-19 07:35:52,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210
[2023-11-19 07:35:53,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 196
[2023-11-19 07:35:53,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 55 transitions, 333 flow. Second operand has 15 states, 15 states have (on average 84.33333333333333) internal successors, (1265), 15 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:35:53,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:35:53,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 196
[2023-11-19 07:35:53,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:35:54,747 INFO L124 PetriNetUnfolderBase]: 1712/2548 cut-off events.
[2023-11-19 07:35:54,747 INFO L125 PetriNetUnfolderBase]: For 6471/6471 co-relation queries the response was YES.
[2023-11-19 07:35:54,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10006 conditions, 2548 events. 1712/2548 cut-off events. For 6471/6471 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 11771 event pairs, 176 based on Foata normal form. 34/2582 useless extension candidates. Maximal degree in co-relation 6502. Up to 837 conditions per place.
[2023-11-19 07:35:54,777 INFO L140 encePairwiseOnDemand]: 187/196 looper letters, 222 selfloop transitions, 70 changer transitions 0/292 dead transitions.
[2023-11-19 07:35:54,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 292 transitions, 2103 flow
[2023-11-19 07:35:54,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2023-11-19 07:35:54,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2023-11-19 07:35:54,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2043 transitions.
[2023-11-19 07:35:54,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47379406307977734
[2023-11-19 07:35:54,786 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2043 transitions.
[2023-11-19 07:35:54,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2043 transitions.
[2023-11-19 07:35:54,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:35:54,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2043 transitions.
[2023-11-19 07:35:54,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 92.86363636363636) internal successors, (2043), 22 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:35:54,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 196.0) internal successors, (4508), 23 states have internal predecessors, (4508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:35:54,813 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 196.0) internal successors, (4508), 23 states have internal predecessors, (4508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:35:54,814 INFO L175 Difference]: Start difference. First operand has 46 places, 55 transitions, 333 flow. Second operand 22 states and 2043 transitions.
[2023-11-19 07:35:54,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 292 transitions, 2103 flow
[2023-11-19 07:35:54,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 292 transitions, 2031 flow, removed 36 selfloop flow, removed 0 redundant places.
[2023-11-19 07:35:54,882 INFO L231 Difference]: Finished difference. Result has 85 places, 110 transitions, 1016 flow
[2023-11-19 07:35:54,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1016, PETRI_PLACES=85, PETRI_TRANSITIONS=110}
[2023-11-19 07:35:54,886 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 56 predicate places.
[2023-11-19 07:35:54,886 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 110 transitions, 1016 flow
[2023-11-19 07:35:54,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 84.33333333333333) internal successors, (1265), 15 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:35:54,887 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:35:54,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:35:54,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-11-19 07:35:55,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:35:55,094 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] ===
[2023-11-19 07:35:55,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:35:55,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1916724734, now seen corresponding path program 2 times
[2023-11-19 07:35:55,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:35:55,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995512543]
[2023-11-19 07:35:55,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:35:55,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:35:55,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:35:55,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:35:55,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:35:55,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995512543]
[2023-11-19 07:35:55,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995512543] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 07:35:55,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257723616]
[2023-11-19 07:35:55,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2023-11-19 07:35:55,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:35:55,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:35:55,345 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:35:55,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-11-19 07:35:55,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2023-11-19 07:35:55,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-11-19 07:35:55,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-19 07:35:55,484 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:35:55,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:35:55,592 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 07:35:55,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:35:55,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257723616] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-19 07:35:55,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2023-11-19 07:35:55,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 9
[2023-11-19 07:35:55,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704065492]
[2023-11-19 07:35:55,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:35:55,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-19 07:35:55,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:35:55,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-19 07:35:55,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72
[2023-11-19 07:35:55,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 196
[2023-11-19 07:35:55,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 110 transitions, 1016 flow. Second operand has 6 states, 6 states have (on average 90.33333333333333) internal successors, (542), 6 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:35:55,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:35:55,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 196
[2023-11-19 07:35:55,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:35:56,700 INFO L124 PetriNetUnfolderBase]: 2356/3496 cut-off events.
[2023-11-19 07:35:56,700 INFO L125 PetriNetUnfolderBase]: For 31559/31559 co-relation queries the response was YES.
[2023-11-19 07:35:56,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20645 conditions, 3496 events. 2356/3496 cut-off events. For 31559/31559 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 16681 event pairs, 402 based on Foata normal form. 4/3500 useless extension candidates. Maximal degree in co-relation 20141. Up to 1186 conditions per place.
[2023-11-19 07:35:56,761 INFO L140 encePairwiseOnDemand]: 189/196 looper letters, 165 selfloop transitions, 45 changer transitions 0/210 dead transitions.
[2023-11-19 07:35:56,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 210 transitions, 2274 flow
[2023-11-19 07:35:56,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2023-11-19 07:35:56,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2023-11-19 07:35:56,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 799 transitions.
[2023-11-19 07:35:56,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5095663265306123
[2023-11-19 07:35:56,766 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 799 transitions.
[2023-11-19 07:35:56,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 799 transitions.
[2023-11-19 07:35:56,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:35:56,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 799 transitions.
[2023-11-19 07:35:56,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 99.875) internal successors, (799), 8 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:35:56,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 196.0) internal successors, (1764), 9 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:35:56,774 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 196.0) internal successors, (1764), 9 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:35:56,774 INFO L175 Difference]: Start difference. First operand has 85 places, 110 transitions, 1016 flow. Second operand 8 states and 799 transitions.
[2023-11-19 07:35:56,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 210 transitions, 2274 flow
[2023-11-19 07:35:56,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 210 transitions, 2118 flow, removed 78 selfloop flow, removed 0 redundant places.
[2023-11-19 07:35:56,864 INFO L231 Difference]: Finished difference. Result has 99 places, 130 transitions, 1350 flow
[2023-11-19 07:35:56,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=896, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1350, PETRI_PLACES=99, PETRI_TRANSITIONS=130}
[2023-11-19 07:35:56,865 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 70 predicate places.
[2023-11-19 07:35:56,865 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 130 transitions, 1350 flow
[2023-11-19 07:35:56,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 90.33333333333333) internal successors, (542), 6 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:35:56,866 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:35:56,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:35:56,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-11-19 07:35:57,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:35:57,088 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] ===
[2023-11-19 07:35:57,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:35:57,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1904601854, now seen corresponding path program 1 times
[2023-11-19 07:35:57,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:35:57,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557379950]
[2023-11-19 07:35:57,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:35:57,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:35:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:35:57,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:35:57,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:35:57,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557379950]
[2023-11-19 07:35:57,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557379950] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:35:57,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:35:57,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-19 07:35:57,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013872817]
[2023-11-19 07:35:57,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:35:57,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-19 07:35:57,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:35:57,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-19 07:35:57,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2023-11-19 07:35:57,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 196
[2023-11-19 07:35:57,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 130 transitions, 1350 flow. Second operand has 7 states, 7 states have (on average 86.85714285714286) internal successors, (608), 7 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:35:57,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:35:57,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 196
[2023-11-19 07:35:57,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:35:58,670 INFO L124 PetriNetUnfolderBase]: 2433/3636 cut-off events.
[2023-11-19 07:35:58,671 INFO L125 PetriNetUnfolderBase]: For 52463/52463 co-relation queries the response was YES.
[2023-11-19 07:35:58,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23215 conditions, 3636 events. 2433/3636 cut-off events. For 52463/52463 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 17439 event pairs, 926 based on Foata normal form. 18/3654 useless extension candidates. Maximal degree in co-relation 22636. Up to 2871 conditions per place.
[2023-11-19 07:35:58,740 INFO L140 encePairwiseOnDemand]: 187/196 looper letters, 149 selfloop transitions, 39 changer transitions 9/197 dead transitions.
[2023-11-19 07:35:58,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 197 transitions, 2335 flow
[2023-11-19 07:35:58,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2023-11-19 07:35:58,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states.
[2023-11-19 07:35:58,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 662 transitions.
[2023-11-19 07:35:58,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48250728862973763
[2023-11-19 07:35:58,745 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 662 transitions.
[2023-11-19 07:35:58,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 662 transitions.
[2023-11-19 07:35:58,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:35:58,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 662 transitions.
[2023-11-19 07:35:58,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 94.57142857142857) internal successors, (662), 7 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:35:58,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:35:58,755 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:35:58,755 INFO L175 Difference]: Start difference. First operand has 99 places, 130 transitions, 1350 flow. Second operand 7 states and 662 transitions.
[2023-11-19 07:35:58,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 197 transitions, 2335 flow
[2023-11-19 07:35:58,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 197 transitions, 2291 flow, removed 22 selfloop flow, removed 0 redundant places.
[2023-11-19 07:35:59,004 INFO L231 Difference]: Finished difference. Result has 109 places, 143 transitions, 1644 flow
[2023-11-19 07:35:59,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=1306, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1644, PETRI_PLACES=109, PETRI_TRANSITIONS=143}
[2023-11-19 07:35:59,006 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 80 predicate places.
[2023-11-19 07:35:59,006 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 143 transitions, 1644 flow
[2023-11-19 07:35:59,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 86.85714285714286) internal successors, (608), 7 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:35:59,007 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:35:59,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:35:59,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2023-11-19 07:35:59,008 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] ===
[2023-11-19 07:35:59,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:35:59,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1326530596, now seen corresponding path program 3 times
[2023-11-19 07:35:59,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:35:59,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553649775]
[2023-11-19 07:35:59,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:35:59,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:35:59,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:35:59,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:35:59,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:35:59,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553649775]
[2023-11-19 07:35:59,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553649775] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 07:35:59,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894380686]
[2023-11-19 07:35:59,256 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2023-11-19 07:35:59,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:35:59,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:35:59,257 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:35:59,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-11-19 07:35:59,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2023-11-19 07:35:59,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-11-19 07:35:59,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 14 conjunts are in the unsatisfiable core
[2023-11-19 07:35:59,425 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:35:59,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:35:59,570 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 07:35:59,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:35:59,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894380686] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-19 07:35:59,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-11-19 07:35:59,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 17
[2023-11-19 07:35:59,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647906835]
[2023-11-19 07:35:59,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-11-19 07:35:59,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2023-11-19 07:35:59,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:35:59,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2023-11-19 07:35:59,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272
[2023-11-19 07:35:59,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 196
[2023-11-19 07:35:59,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 143 transitions, 1644 flow. Second operand has 17 states, 17 states have (on average 84.0) internal successors, (1428), 17 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:35:59,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:35:59,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 196
[2023-11-19 07:35:59,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:36:02,483 INFO L124 PetriNetUnfolderBase]: 3536/5199 cut-off events.
[2023-11-19 07:36:02,483 INFO L125 PetriNetUnfolderBase]: For 88244/88244 co-relation queries the response was YES.
[2023-11-19 07:36:02,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36116 conditions, 5199 events. 3536/5199 cut-off events. For 88244/88244 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 25909 event pairs, 799 based on Foata normal form. 86/5285 useless extension candidates. Maximal degree in co-relation 35368. Up to 3389 conditions per place.
[2023-11-19 07:36:02,556 INFO L140 encePairwiseOnDemand]: 187/196 looper letters, 267 selfloop transitions, 230 changer transitions 2/499 dead transitions.
[2023-11-19 07:36:02,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 499 transitions, 6339 flow
[2023-11-19 07:36:02,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2023-11-19 07:36:02,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states.
[2023-11-19 07:36:02,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2453 transitions.
[2023-11-19 07:36:02,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46352985638699923
[2023-11-19 07:36:02,568 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2453 transitions.
[2023-11-19 07:36:02,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2453 transitions.
[2023-11-19 07:36:02,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:36:02,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2453 transitions.
[2023-11-19 07:36:02,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 90.85185185185185) internal successors, (2453), 27 states have internal predecessors, (2453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:36:02,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 196.0) internal successors, (5488), 28 states have internal predecessors, (5488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:36:02,593 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 196.0) internal successors, (5488), 28 states have internal predecessors, (5488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:36:02,593 INFO L175 Difference]: Start difference. First operand has 109 places, 143 transitions, 1644 flow. Second operand 27 states and 2453 transitions.
[2023-11-19 07:36:02,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 499 transitions, 6339 flow
[2023-11-19 07:36:02,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 499 transitions, 5963 flow, removed 188 selfloop flow, removed 1 redundant places.
[2023-11-19 07:36:02,847 INFO L231 Difference]: Finished difference. Result has 149 places, 332 transitions, 4915 flow
[2023-11-19 07:36:02,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=1552, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=4915, PETRI_PLACES=149, PETRI_TRANSITIONS=332}
[2023-11-19 07:36:02,883 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 120 predicate places.
[2023-11-19 07:36:02,883 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 332 transitions, 4915 flow
[2023-11-19 07:36:02,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 84.0) internal successors, (1428), 17 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:36:02,884 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:36:02,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:36:02,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2023-11-19 07:36:03,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6
[2023-11-19 07:36:03,085 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] ===
[2023-11-19 07:36:03,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:36:03,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1619639042, now seen corresponding path program 3 times
[2023-11-19 07:36:03,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:36:03,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16131543]
[2023-11-19 07:36:03,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:36:03,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:36:03,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:36:03,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:36:03,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:36:03,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16131543]
[2023-11-19 07:36:03,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16131543] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 07:36:03,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078032793]
[2023-11-19 07:36:03,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2023-11-19 07:36:03,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:36:03,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:36:03,279 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:36:03,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-11-19 07:36:03,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s)
[2023-11-19 07:36:03,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-11-19 07:36:03,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 14 conjunts are in the unsatisfiable core
[2023-11-19 07:36:03,425 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:36:03,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:36:03,531 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 07:36:04,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:36:04,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078032793] provided 0 perfect and 2 imperfect interpolant sequences
[2023-11-19 07:36:04,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-11-19 07:36:04,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15
[2023-11-19 07:36:04,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029449921]
[2023-11-19 07:36:04,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-11-19 07:36:04,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2023-11-19 07:36:04,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:36:04,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2023-11-19 07:36:04,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210
[2023-11-19 07:36:04,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 196
[2023-11-19 07:36:04,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 332 transitions, 4915 flow. Second operand has 15 states, 15 states have (on average 84.13333333333334) internal successors, (1262), 15 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:36:04,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:36:04,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 196
[2023-11-19 07:36:04,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:36:07,956 INFO L124 PetriNetUnfolderBase]: 4716/7067 cut-off events.
[2023-11-19 07:36:07,956 INFO L125 PetriNetUnfolderBase]: For 108538/108538 co-relation queries the response was YES.
[2023-11-19 07:36:08,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52858 conditions, 7067 events. 4716/7067 cut-off events. For 108538/108538 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 38642 event pairs, 484 based on Foata normal form. 34/7101 useless extension candidates. Maximal degree in co-relation 52049. Up to 2617 conditions per place.
[2023-11-19 07:36:08,065 INFO L140 encePairwiseOnDemand]: 187/196 looper letters, 364 selfloop transitions, 306 changer transitions 1/671 dead transitions.
[2023-11-19 07:36:08,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 671 transitions, 10159 flow
[2023-11-19 07:36:08,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2023-11-19 07:36:08,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2023-11-19 07:36:08,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2029 transitions.
[2023-11-19 07:36:08,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4705473098330241
[2023-11-19 07:36:08,074 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2029 transitions.
[2023-11-19 07:36:08,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2029 transitions.
[2023-11-19 07:36:08,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:36:08,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2029 transitions.
[2023-11-19 07:36:08,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 92.22727272727273) internal successors, (2029), 22 states have internal predecessors, (2029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:36:08,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 196.0) internal successors, (4508), 23 states have internal predecessors, (4508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:36:08,094 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 196.0) internal successors, (4508), 23 states have internal predecessors, (4508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:36:08,094 INFO L175 Difference]: Start difference. First operand has 149 places, 332 transitions, 4915 flow. Second operand 22 states and 2029 transitions.
[2023-11-19 07:36:08,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 671 transitions, 10159 flow
[2023-11-19 07:36:08,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 671 transitions, 8789 flow, removed 685 selfloop flow, removed 0 redundant places.
[2023-11-19 07:36:09,001 INFO L231 Difference]: Finished difference. Result has 187 places, 456 transitions, 6785 flow
[2023-11-19 07:36:09,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=3881, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=6785, PETRI_PLACES=187, PETRI_TRANSITIONS=456}
[2023-11-19 07:36:09,003 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 158 predicate places.
[2023-11-19 07:36:09,003 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 456 transitions, 6785 flow
[2023-11-19 07:36:09,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 84.13333333333334) internal successors, (1262), 15 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:36:09,004 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:36:09,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:36:09,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2023-11-19 07:36:09,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:36:09,226 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] ===
[2023-11-19 07:36:09,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:36:09,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1541859328, now seen corresponding path program 4 times
[2023-11-19 07:36:09,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:36:09,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077240245]
[2023-11-19 07:36:09,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:36:09,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:36:09,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:36:09,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:36:09,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:36:09,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077240245]
[2023-11-19 07:36:09,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077240245] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:36:09,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:36:09,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-19 07:36:09,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010604693]
[2023-11-19 07:36:09,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:36:09,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-19 07:36:09,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:36:09,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-19 07:36:09,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2023-11-19 07:36:09,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 196
[2023-11-19 07:36:09,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 456 transitions, 6785 flow. Second operand has 7 states, 7 states have (on average 86.85714285714286) internal successors, (608), 7 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:36:09,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:36:09,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 196
[2023-11-19 07:36:09,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:36:12,595 INFO L124 PetriNetUnfolderBase]: 4940/7451 cut-off events.
[2023-11-19 07:36:12,595 INFO L125 PetriNetUnfolderBase]: For 131390/131390 co-relation queries the response was YES.
[2023-11-19 07:36:12,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55699 conditions, 7451 events. 4940/7451 cut-off events. For 131390/131390 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 41727 event pairs, 1352 based on Foata normal form. 40/7487 useless extension candidates. Maximal degree in co-relation 55119. Up to 4564 conditions per place.
[2023-11-19 07:36:12,736 INFO L140 encePairwiseOnDemand]: 187/196 looper letters, 508 selfloop transitions, 92 changer transitions 9/609 dead transitions.
[2023-11-19 07:36:12,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 609 transitions, 10021 flow
[2023-11-19 07:36:12,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2023-11-19 07:36:12,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states.
[2023-11-19 07:36:12,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 665 transitions.
[2023-11-19 07:36:12,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4846938775510204
[2023-11-19 07:36:12,743 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 665 transitions.
[2023-11-19 07:36:12,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 665 transitions.
[2023-11-19 07:36:12,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:36:12,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 665 transitions.
[2023-11-19 07:36:12,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 95.0) internal successors, (665), 7 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:36:12,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:36:12,751 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 196.0) internal successors, (1568), 8 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:36:12,751 INFO L175 Difference]: Start difference. First operand has 187 places, 456 transitions, 6785 flow. Second operand 7 states and 665 transitions.
[2023-11-19 07:36:12,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 609 transitions, 10021 flow
[2023-11-19 07:36:13,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 609 transitions, 9429 flow, removed 296 selfloop flow, removed 0 redundant places.
[2023-11-19 07:36:13,598 INFO L231 Difference]: Finished difference. Result has 197 places, 475 transitions, 7038 flow
[2023-11-19 07:36:13,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=6433, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7038, PETRI_PLACES=197, PETRI_TRANSITIONS=475}
[2023-11-19 07:36:13,599 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 168 predicate places.
[2023-11-19 07:36:13,599 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 475 transitions, 7038 flow
[2023-11-19 07:36:13,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 86.85714285714286) internal successors, (608), 7 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:36:13,599 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:36:13,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:36:13,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2023-11-19 07:36:13,600 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] ===
[2023-11-19 07:36:13,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:36:13,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1081506126, now seen corresponding path program 4 times
[2023-11-19 07:36:13,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:36:13,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511601839]
[2023-11-19 07:36:13,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:36:13,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:36:13,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:36:13,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:36:13,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:36:13,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511601839]
[2023-11-19 07:36:13,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511601839] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 07:36:13,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110127791]
[2023-11-19 07:36:13,823 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2023-11-19 07:36:13,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:36:13,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:36:13,824 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:36:13,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-11-19 07:36:13,966 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2023-11-19 07:36:13,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-11-19 07:36:13,968 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-11-19 07:36:13,969 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:36:14,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:36:14,101 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 07:36:14,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:36:14,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110127791] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-19 07:36:14,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2023-11-19 07:36:14,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 10
[2023-11-19 07:36:14,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040993345]
[2023-11-19 07:36:14,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:36:14,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-19 07:36:14,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:36:14,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-19 07:36:14,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90
[2023-11-19 07:36:14,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 196
[2023-11-19 07:36:14,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 475 transitions, 7038 flow. Second operand has 6 states, 6 states have (on average 90.33333333333333) internal successors, (542), 6 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:36:14,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:36:14,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 196
[2023-11-19 07:36:14,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:36:16,658 INFO L124 PetriNetUnfolderBase]: 4923/7423 cut-off events.
[2023-11-19 07:36:16,658 INFO L125 PetriNetUnfolderBase]: For 123195/123195 co-relation queries the response was YES.
[2023-11-19 07:36:16,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54310 conditions, 7423 events. 4923/7423 cut-off events. For 123195/123195 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 41231 event pairs, 1269 based on Foata normal form. 16/7435 useless extension candidates. Maximal degree in co-relation 53695. Up to 3929 conditions per place.
[2023-11-19 07:36:16,805 INFO L140 encePairwiseOnDemand]: 189/196 looper letters, 486 selfloop transitions, 66 changer transitions 0/552 dead transitions.
[2023-11-19 07:36:16,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 552 transitions, 9030 flow
[2023-11-19 07:36:16,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2023-11-19 07:36:16,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2023-11-19 07:36:16,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 591 transitions.
[2023-11-19 07:36:16,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025510204081632
[2023-11-19 07:36:16,808 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 591 transitions.
[2023-11-19 07:36:16,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 591 transitions.
[2023-11-19 07:36:16,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:36:16,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 591 transitions.
[2023-11-19 07:36:16,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 98.5) internal successors, (591), 6 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:36:16,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 196.0) internal successors, (1372), 7 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:36:16,814 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 196.0) internal successors, (1372), 7 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:36:16,814 INFO L175 Difference]: Start difference. First operand has 197 places, 475 transitions, 7038 flow. Second operand 6 states and 591 transitions.
[2023-11-19 07:36:16,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 552 transitions, 9030 flow
[2023-11-19 07:36:17,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 552 transitions, 8863 flow, removed 30 selfloop flow, removed 3 redundant places.
[2023-11-19 07:36:17,385 INFO L231 Difference]: Finished difference. Result has 200 places, 480 transitions, 7166 flow
[2023-11-19 07:36:17,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=6883, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7166, PETRI_PLACES=200, PETRI_TRANSITIONS=480}
[2023-11-19 07:36:17,386 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 171 predicate places.
[2023-11-19 07:36:17,387 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 480 transitions, 7166 flow
[2023-11-19 07:36:17,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 90.33333333333333) internal successors, (542), 6 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:36:17,387 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:36:17,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:36:17,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2023-11-19 07:36:17,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2023-11-19 07:36:17,599 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] ===
[2023-11-19 07:36:17,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:36:17,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1363935602, now seen corresponding path program 5 times
[2023-11-19 07:36:17,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:36:17,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161108034]
[2023-11-19 07:36:17,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:36:17,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:36:17,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:36:17,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:36:17,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:36:17,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161108034]
[2023-11-19 07:36:17,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161108034] provided 1 perfect and 0 imperfect interpolant sequences
[2023-11-19 07:36:17,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-11-19 07:36:17,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-11-19 07:36:17,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282120905]
[2023-11-19 07:36:17,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:36:17,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-19 07:36:17,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:36:17,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-19 07:36:17,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2023-11-19 07:36:17,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 196
[2023-11-19 07:36:17,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 480 transitions, 7166 flow. Second operand has 7 states, 7 states have (on average 85.85714285714286) internal successors, (601), 7 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:36:17,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:36:17,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 196
[2023-11-19 07:36:17,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:36:20,201 INFO L124 PetriNetUnfolderBase]: 5209/7865 cut-off events.
[2023-11-19 07:36:20,201 INFO L125 PetriNetUnfolderBase]: For 129731/129731 co-relation queries the response was YES.
[2023-11-19 07:36:20,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58010 conditions, 7865 events. 5209/7865 cut-off events. For 129731/129731 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 44290 event pairs, 917 based on Foata normal form. 34/7895 useless extension candidates. Maximal degree in co-relation 57380. Up to 4484 conditions per place.
[2023-11-19 07:36:20,314 INFO L140 encePairwiseOnDemand]: 187/196 looper letters, 474 selfloop transitions, 169 changer transitions 2/645 dead transitions.
[2023-11-19 07:36:20,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 645 transitions, 10712 flow
[2023-11-19 07:36:20,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2023-11-19 07:36:20,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states.
[2023-11-19 07:36:20,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 926 transitions.
[2023-11-19 07:36:20,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47244897959183674
[2023-11-19 07:36:20,320 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 926 transitions.
[2023-11-19 07:36:20,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 926 transitions.
[2023-11-19 07:36:20,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:36:20,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 926 transitions.
[2023-11-19 07:36:20,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 92.6) internal successors, (926), 10 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:36:20,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 196.0) internal successors, (2156), 11 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:36:20,329 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 196.0) internal successors, (2156), 11 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:36:20,329 INFO L175 Difference]: Start difference. First operand has 200 places, 480 transitions, 7166 flow. Second operand 10 states and 926 transitions.
[2023-11-19 07:36:20,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 645 transitions, 10712 flow
[2023-11-19 07:36:21,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 645 transitions, 10540 flow, removed 20 selfloop flow, removed 2 redundant places.
[2023-11-19 07:36:21,137 INFO L231 Difference]: Finished difference. Result has 214 places, 544 transitions, 8830 flow
[2023-11-19 07:36:21,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=7036, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8830, PETRI_PLACES=214, PETRI_TRANSITIONS=544}
[2023-11-19 07:36:21,139 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 185 predicate places.
[2023-11-19 07:36:21,139 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 544 transitions, 8830 flow
[2023-11-19 07:36:21,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.85714285714286) internal successors, (601), 7 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:36:21,139 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:36:21,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:36:21,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2023-11-19 07:36:21,140 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] ===
[2023-11-19 07:36:21,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:36:21,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1411709134, now seen corresponding path program 6 times
[2023-11-19 07:36:21,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:36:21,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119721229]
[2023-11-19 07:36:21,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:36:21,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:36:21,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:36:21,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:36:21,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:36:21,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119721229]
[2023-11-19 07:36:21,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119721229] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 07:36:21,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602888335]
[2023-11-19 07:36:21,414 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2023-11-19 07:36:21,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:36:21,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:36:21,416 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:36:21,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-11-19 07:36:21,550 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s)
[2023-11-19 07:36:21,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-11-19 07:36:21,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 12 conjunts are in the unsatisfiable core
[2023-11-19 07:36:21,554 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:36:21,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:36:21,751 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 07:36:21,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:36:21,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602888335] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-19 07:36:21,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2023-11-19 07:36:21,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 8] total 13
[2023-11-19 07:36:21,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120770762]
[2023-11-19 07:36:21,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:36:21,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-11-19 07:36:21,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:36:21,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-11-19 07:36:21,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156
[2023-11-19 07:36:21,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 196
[2023-11-19 07:36:21,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 544 transitions, 8830 flow. Second operand has 6 states, 6 states have (on average 90.33333333333333) internal successors, (542), 6 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:36:21,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:36:21,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 196
[2023-11-19 07:36:21,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-11-19 07:36:25,182 INFO L124 PetriNetUnfolderBase]: 6198/9292 cut-off events.
[2023-11-19 07:36:25,182 INFO L125 PetriNetUnfolderBase]: For 169374/169374 co-relation queries the response was YES.
[2023-11-19 07:36:25,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71789 conditions, 9292 events. 6198/9292 cut-off events. For 169374/169374 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 53332 event pairs, 651 based on Foata normal form. 16/9304 useless extension candidates. Maximal degree in co-relation 71112. Up to 3497 conditions per place.
[2023-11-19 07:36:25,394 INFO L140 encePairwiseOnDemand]: 189/196 looper letters, 556 selfloop transitions, 190 changer transitions 0/746 dead transitions.
[2023-11-19 07:36:25,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 746 transitions, 13066 flow
[2023-11-19 07:36:25,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2023-11-19 07:36:25,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2023-11-19 07:36:25,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 801 transitions.
[2023-11-19 07:36:25,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5108418367346939
[2023-11-19 07:36:25,399 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 801 transitions.
[2023-11-19 07:36:25,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 801 transitions.
[2023-11-19 07:36:25,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-11-19 07:36:25,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 801 transitions.
[2023-11-19 07:36:25,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 100.125) internal successors, (801), 8 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:36:25,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 196.0) internal successors, (1764), 9 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:36:25,409 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 196.0) internal successors, (1764), 9 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:36:25,410 INFO L175 Difference]: Start difference. First operand has 214 places, 544 transitions, 8830 flow. Second operand 8 states and 801 transitions.
[2023-11-19 07:36:25,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 746 transitions, 13066 flow
[2023-11-19 07:36:26,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 746 transitions, 12930 flow, removed 68 selfloop flow, removed 0 redundant places.
[2023-11-19 07:36:26,905 INFO L231 Difference]: Finished difference. Result has 226 places, 614 transitions, 10773 flow
[2023-11-19 07:36:26,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=196, PETRI_DIFFERENCE_MINUEND_FLOW=8694, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10773, PETRI_PLACES=226, PETRI_TRANSITIONS=614}
[2023-11-19 07:36:26,907 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 197 predicate places.
[2023-11-19 07:36:26,907 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 614 transitions, 10773 flow
[2023-11-19 07:36:26,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 90.33333333333333) internal successors, (542), 6 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:36:26,908 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-11-19 07:36:26,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-11-19 07:36:26,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2023-11-19 07:36:27,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2023-11-19 07:36:27,110 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] ===
[2023-11-19 07:36:27,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier
[2023-11-19 07:36:27,110 INFO L85 PathProgramCache]: Analyzing trace with hash 128328354, now seen corresponding path program 7 times
[2023-11-19 07:36:27,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-11-19 07:36:27,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111394603]
[2023-11-19 07:36:27,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-11-19 07:36:27,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-11-19 07:36:27,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:36:27,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:36:27,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-11-19 07:36:27,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111394603]
[2023-11-19 07:36:27,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111394603] provided 0 perfect and 1 imperfect interpolant sequences
[2023-11-19 07:36:27,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876418559]
[2023-11-19 07:36:27,343 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2023-11-19 07:36:27,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-11-19 07:36:27,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/z3
[2023-11-19 07:36:27,345 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-11-19 07:36:27,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fa32a50-b733-41a9-907c-a24c4fd5f3b0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2023-11-19 07:36:27,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-11-19 07:36:27,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 11 conjunts are in the unsatisfiable core
[2023-11-19 07:36:27,525 INFO L285 TraceCheckSpWp]: Computing forward predicates...
[2023-11-19 07:36:27,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:36:27,597 INFO L327 TraceCheckSpWp]: Computing backward predicates...
[2023-11-19 07:36:27,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-11-19 07:36:27,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876418559] provided 1 perfect and 1 imperfect interpolant sequences
[2023-11-19 07:36:27,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2023-11-19 07:36:27,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 12
[2023-11-19 07:36:27,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713339196]
[2023-11-19 07:36:27,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-11-19 07:36:27,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-11-19 07:36:27,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-11-19 07:36:27,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-11-19 07:36:27,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132
[2023-11-19 07:36:27,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 196
[2023-11-19 07:36:27,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 614 transitions, 10773 flow. Second operand has 7 states, 7 states have (on average 85.85714285714286) internal successors, (601), 7 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-11-19 07:36:27,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-11-19 07:36:27,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 196
[2023-11-19 07:36:27,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand