./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-3.i --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 5e519f3a
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_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 44de34ccc7195f8ba562241ad79de4cb2add35f6ad2c59de465184820d6f6382
--- Real Ultimate output ---
[0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset.
This is Ultimate 0.2.2-dev-5e519f3
[2022-11-02 20:35:43,213 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2022-11-02 20:35:43,219 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2022-11-02 20:35:43,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-11-02 20:35:43,254 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-11-02 20:35:43,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-11-02 20:35:43,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-11-02 20:35:43,258 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2022-11-02 20:35:43,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-11-02 20:35:43,261 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-11-02 20:35:43,262 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2022-11-02 20:35:43,263 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-11-02 20:35:43,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-11-02 20:35:43,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-11-02 20:35:43,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-11-02 20:35:43,267 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-11-02 20:35:43,268 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-11-02 20:35:43,269 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-11-02 20:35:43,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-11-02 20:35:43,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2022-11-02 20:35:43,274 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-11-02 20:35:43,278 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-11-02 20:35:43,279 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2022-11-02 20:35:43,280 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-11-02 20:35:43,284 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-11-02 20:35:43,284 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-11-02 20:35:43,285 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-11-02 20:35:43,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-11-02 20:35:43,286 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-11-02 20:35:43,287 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-11-02 20:35:43,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-11-02 20:35:43,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-11-02 20:35:43,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-11-02 20:35:43,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2022-11-02 20:35:43,297 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-11-02 20:35:43,299 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2022-11-02 20:35:43,299 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-11-02 20:35:43,300 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-11-02 20:35:43,300 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2022-11-02 20:35:43,301 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2022-11-02 20:35:43,302 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2022-11-02 20:35:43,303 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf
[2022-11-02 20:35:43,346 INFO L113 SettingsManager]: Loading preferences was successful
[2022-11-02 20:35:43,346 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2022-11-02 20:35:43,347 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-11-02 20:35:43,347 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-11-02 20:35:43,348 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-11-02 20:35:43,348 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-11-02 20:35:43,349 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-11-02 20:35:43,349 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2022-11-02 20:35:43,350 INFO L138 SettingsManager]: * Use SBE=true
[2022-11-02 20:35:43,350 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-11-02 20:35:43,351 INFO L138 SettingsManager]: * sizeof long=4
[2022-11-02 20:35:43,351 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2022-11-02 20:35:43,351 INFO L138 SettingsManager]: * sizeof POINTER=4
[2022-11-02 20:35:43,351 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2022-11-02 20:35:43,352 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2022-11-02 20:35:43,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-11-02 20:35:43,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2022-11-02 20:35:43,352 INFO L138 SettingsManager]: * sizeof long double=12
[2022-11-02 20:35:43,352 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2022-11-02 20:35:43,352 INFO L138 SettingsManager]: * Use constant arrays=true
[2022-11-02 20:35:43,353 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2022-11-02 20:35:43,353 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-11-02 20:35:43,353 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2022-11-02 20:35:43,353 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2022-11-02 20:35:43,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-02 20:35:43,354 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-11-02 20:35:43,354 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2022-11-02 20:35:43,354 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-11-02 20:35:43,354 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2022-11-02 20:35:43,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-11-02 20:35:43,354 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false
[2022-11-02 20:35:43,355 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2022-11-02 20:35:43,355 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-11-02 20:35:43,355 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44de34ccc7195f8ba562241ad79de4cb2add35f6ad2c59de465184820d6f6382
[2022-11-02 20:35:43,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2022-11-02 20:35:43,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-11-02 20:35:43,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-11-02 20:35:43,662 INFO L271 PluginConnector]: Initializing CDTParser...
[2022-11-02 20:35:43,663 INFO L275 PluginConnector]: CDTParser initialized
[2022-11-02 20:35:43,664 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-3.i
[2022-11-02 20:35:43,757 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/data/e2e1533f6/f277889a49c843ed92837771f819b92b/FLAGcd53f6580
[2022-11-02 20:35:44,347 INFO L306 CDTParser]: Found 1 translation units.
[2022-11-02 20:35:44,348 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-3.i
[2022-11-02 20:35:44,362 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/data/e2e1533f6/f277889a49c843ed92837771f819b92b/FLAGcd53f6580
[2022-11-02 20:35:44,582 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/data/e2e1533f6/f277889a49c843ed92837771f819b92b
[2022-11-02 20:35:44,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-11-02 20:35:44,585 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2022-11-02 20:35:44,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-11-02 20:35:44,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-11-02 20:35:44,591 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2022-11-02 20:35:44,592 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:35:44" (1/1) ...
[2022-11-02 20:35:44,593 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ef5c9ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:44, skipping insertion in model container
[2022-11-02 20:35:44,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:35:44" (1/1) ...
[2022-11-02 20:35:44,600 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2022-11-02 20:35:44,645 INFO L178 MainTranslator]: Built tables and reachable declarations
[2022-11-02 20:35:44,878 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-3.i[818,831]
[2022-11-02 20:35:45,260 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-11-02 20:35:45,270 INFO L203 MainTranslator]: Completed pre-run
[2022-11-02 20:35:45,279 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/sv-benchmarks/c/pthread-C-DAC/pthread-demo-datarace-3.i[818,831]
[2022-11-02 20:35:45,312 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-11-02 20:35:45,403 INFO L208 MainTranslator]: Completed translation
[2022-11-02 20:35:45,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:45 WrapperNode
[2022-11-02 20:35:45,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-11-02 20:35:45,404 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-11-02 20:35:45,404 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-11-02 20:35:45,405 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2022-11-02 20:35:45,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:45" (1/1) ...
[2022-11-02 20:35:45,444 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:45" (1/1) ...
[2022-11-02 20:35:45,487 INFO L138 Inliner]: procedures = 365, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 74
[2022-11-02 20:35:45,487 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-11-02 20:35:45,488 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-11-02 20:35:45,489 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2022-11-02 20:35:45,489 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2022-11-02 20:35:45,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:45" (1/1) ...
[2022-11-02 20:35:45,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:45" (1/1) ...
[2022-11-02 20:35:45,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:45" (1/1) ...
[2022-11-02 20:35:45,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:45" (1/1) ...
[2022-11-02 20:35:45,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:45" (1/1) ...
[2022-11-02 20:35:45,537 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:45" (1/1) ...
[2022-11-02 20:35:45,539 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:45" (1/1) ...
[2022-11-02 20:35:45,540 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:45" (1/1) ...
[2022-11-02 20:35:45,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-11-02 20:35:45,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-11-02 20:35:45,544 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2022-11-02 20:35:45,544 INFO L275 PluginConnector]: RCFGBuilder initialized
[2022-11-02 20:35:45,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:45" (1/1) ...
[2022-11-02 20:35:45,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-02 20:35:45,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:35:45,580 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-11-02 20:35:45,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-11-02 20:35:45,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin
[2022-11-02 20:35:45,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2022-11-02 20:35:45,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-11-02 20:35:45,632 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end
[2022-11-02 20:35:45,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2022-11-02 20:35:45,633 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_datarace
[2022-11-02 20:35:45,633 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_datarace
[2022-11-02 20:35:45,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2022-11-02 20:35:45,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-11-02 20:35:45,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2022-11-02 20:35:45,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-11-02 20:35:45,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-11-02 20:35:45,638 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement
[2022-11-02 20:35:45,892 INFO L235 CfgBuilder]: Building ICFG
[2022-11-02 20:35:45,894 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation
[2022-11-02 20:35:46,139 INFO L276 CfgBuilder]: Performing block encoding
[2022-11-02 20:35:46,146 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-11-02 20:35:46,146 INFO L300 CfgBuilder]: Removed 2 assume(true) statements.
[2022-11-02 20:35:46,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:35:46 BoogieIcfgContainer
[2022-11-02 20:35:46,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-11-02 20:35:46,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-11-02 20:35:46,177 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2022-11-02 20:35:46,180 INFO L275 PluginConnector]: TraceAbstraction initialized
[2022-11-02 20:35:46,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:35:44" (1/3) ...
[2022-11-02 20:35:46,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c8783c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:35:46, skipping insertion in model container
[2022-11-02 20:35:46,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:35:45" (2/3) ...
[2022-11-02 20:35:46,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c8783c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:35:46, skipping insertion in model container
[2022-11-02 20:35:46,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:35:46" (3/3) ...
[2022-11-02 20:35:46,183 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-3.i
[2022-11-02 20:35:46,193 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2022-11-02 20:35:46,226 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-11-02 20:35:46,226 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-11-02 20:35:46,226 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2022-11-02 20:35:46,274 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions.
[2022-11-02 20:35:46,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 100 transitions, 208 flow
[2022-11-02 20:35:46,368 INFO L130 PetriNetUnfolder]: 7/99 cut-off events.
[2022-11-02 20:35:46,369 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES.
[2022-11-02 20:35:46,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 99 events. 7/99 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place.
[2022-11-02 20:35:46,374 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 100 transitions, 208 flow
[2022-11-02 20:35:46,378 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 87 transitions, 180 flow
[2022-11-02 20:35:46,389 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-11-02 20:35:46,396 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2a6137cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-11-02 20:35:46,397 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2022-11-02 20:35:46,423 INFO L130 PetriNetUnfolder]: 6/86 cut-off events.
[2022-11-02 20:35:46,423 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES.
[2022-11-02 20:35:46,423 INFO L200 CegarLoopForPetriNet]: Found error trace
[2022-11-02 20:35:46,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:35:46,425 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2022-11-02 20:35:46,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:35:46,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1982439284, now seen corresponding path program 1 times
[2022-11-02 20:35:46,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:35:46,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934347613]
[2022-11-02 20:35:46,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:35:46,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:35:46,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:35:46,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:35:46,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:35:46,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934347613]
[2022-11-02 20:35:46,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934347613] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 20:35:46,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 20:35:46,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-02 20:35:46,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203901732]
[2022-11-02 20:35:46,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:35:46,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-11-02 20:35:46,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:35:46,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-11-02 20:35:46,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-11-02 20:35:46,808 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 100
[2022-11-02 20:35:46,811 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 87 transitions, 180 flow. Second operand has 2 states, 2 states have (on average 91.5) internal successors, (183), 2 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:35:46,811 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-02 20:35:46,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 100
[2022-11-02 20:35:46,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2022-11-02 20:35:46,847 INFO L130 PetriNetUnfolder]: 2/81 cut-off events.
[2022-11-02 20:35:46,848 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES.
[2022-11-02 20:35:46,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 81 events. 2/81 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 4/82 useless extension candidates. Maximal degree in co-relation 35. Up to 3 conditions per place.
[2022-11-02 20:35:46,850 INFO L137 encePairwiseOnDemand]: 96/100 looper letters, 2 selfloop transitions, 0 changer transitions 0/81 dead transitions.
[2022-11-02 20:35:46,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 81 transitions, 172 flow
[2022-11-02 20:35:46,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2022-11-02 20:35:46,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states.
[2022-11-02 20:35:46,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 186 transitions.
[2022-11-02 20:35:46,863 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.93
[2022-11-02 20:35:46,864 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 186 transitions.
[2022-11-02 20:35:46,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 186 transitions.
[2022-11-02 20:35:46,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2022-11-02 20:35:46,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 186 transitions.
[2022-11-02 20:35:46,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 93.0) internal successors, (186), 2 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:35:46,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:35:46,885 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:35:46,887 INFO L175 Difference]: Start difference. First operand has 85 places, 87 transitions, 180 flow. Second operand 2 states and 186 transitions.
[2022-11-02 20:35:46,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 81 transitions, 172 flow
[2022-11-02 20:35:46,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 81 transitions, 168 flow, removed 0 selfloop flow, removed 2 redundant places.
[2022-11-02 20:35:46,901 INFO L231 Difference]: Finished difference. Result has 82 places, 81 transitions, 164 flow
[2022-11-02 20:35:46,904 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=164, PETRI_PLACES=82, PETRI_TRANSITIONS=81}
[2022-11-02 20:35:46,907 INFO L287 CegarLoopForPetriNet]: 85 programPoint places, -3 predicate places.
[2022-11-02 20:35:46,908 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 81 transitions, 164 flow
[2022-11-02 20:35:46,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 91.5) internal successors, (183), 2 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:35:46,910 INFO L200 CegarLoopForPetriNet]: Found error trace
[2022-11-02 20:35:46,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:35:46,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-11-02 20:35:46,911 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2022-11-02 20:35:46,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:35:46,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1853356565, now seen corresponding path program 1 times
[2022-11-02 20:35:46,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:35:46,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556416284]
[2022-11-02 20:35:46,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:35:46,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:35:46,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:35:47,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:35:47,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:35:47,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556416284]
[2022-11-02 20:35:47,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556416284] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 20:35:47,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 20:35:47,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-02 20:35:47,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683782544]
[2022-11-02 20:35:47,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:35:47,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-02 20:35:47,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:35:47,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-02 20:35:47,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-02 20:35:47,144 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 100
[2022-11-02 20:35:47,144 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 81 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:35:47,145 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-02 20:35:47,145 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 100
[2022-11-02 20:35:47,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2022-11-02 20:35:47,201 INFO L130 PetriNetUnfolder]: 2/85 cut-off events.
[2022-11-02 20:35:47,201 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES.
[2022-11-02 20:35:47,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 85 events. 2/85 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 98. Up to 10 conditions per place.
[2022-11-02 20:35:47,203 INFO L137 encePairwiseOnDemand]: 97/100 looper letters, 10 selfloop transitions, 2 changer transitions 0/84 dead transitions.
[2022-11-02 20:35:47,203 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 84 transitions, 194 flow
[2022-11-02 20:35:47,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2022-11-02 20:35:47,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2022-11-02 20:35:47,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions.
[2022-11-02 20:35:47,206 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8733333333333333
[2022-11-02 20:35:47,206 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 262 transitions.
[2022-11-02 20:35:47,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 262 transitions.
[2022-11-02 20:35:47,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2022-11-02 20:35:47,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 262 transitions.
[2022-11-02 20:35:47,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:35:47,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:35:47,211 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:35:47,211 INFO L175 Difference]: Start difference. First operand has 82 places, 81 transitions, 164 flow. Second operand 3 states and 262 transitions.
[2022-11-02 20:35:47,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 84 transitions, 194 flow
[2022-11-02 20:35:47,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 84 transitions, 194 flow, removed 0 selfloop flow, removed 0 redundant places.
[2022-11-02 20:35:47,214 INFO L231 Difference]: Finished difference. Result has 85 places, 82 transitions, 176 flow
[2022-11-02 20:35:47,215 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=85, PETRI_TRANSITIONS=82}
[2022-11-02 20:35:47,215 INFO L287 CegarLoopForPetriNet]: 85 programPoint places, 0 predicate places.
[2022-11-02 20:35:47,216 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 82 transitions, 176 flow
[2022-11-02 20:35:47,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:35:47,216 INFO L200 CegarLoopForPetriNet]: Found error trace
[2022-11-02 20:35:47,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:35:47,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-11-02 20:35:47,217 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2022-11-02 20:35:47,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:35:47,218 INFO L85 PathProgramCache]: Analyzing trace with hash 304267904, now seen corresponding path program 1 times
[2022-11-02 20:35:47,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:35:47,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394524095]
[2022-11-02 20:35:47,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:35:47,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:35:47,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:35:47,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:35:47,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:35:47,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394524095]
[2022-11-02 20:35:47,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394524095] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-02 20:35:47,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314932502]
[2022-11-02 20:35:47,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:35:47,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:35:47,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:35:47,503 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-02 20:35:47,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-11-02 20:35:47,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:35:47,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 2 conjunts are in the unsatisfiable core
[2022-11-02 20:35:47,615 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:35:47,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-11-02 20:35:47,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-11-02 20:35:47,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314932502] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 20:35:47,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-11-02 20:35:47,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6
[2022-11-02 20:35:47,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024002594]
[2022-11-02 20:35:47,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:35:47,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-02 20:35:47,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:35:47,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-02 20:35:47,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2022-11-02 20:35:47,649 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 100
[2022-11-02 20:35:47,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 82 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:35:47,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-02 20:35:47,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 100
[2022-11-02 20:35:47,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2022-11-02 20:35:47,696 INFO L130 PetriNetUnfolder]: 2/92 cut-off events.
[2022-11-02 20:35:47,696 INFO L131 PetriNetUnfolder]: For 2/9 co-relation queries the response was YES.
[2022-11-02 20:35:47,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 92 events. 2/92 cut-off events. For 2/9 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 1/91 useless extension candidates. Maximal degree in co-relation 109. Up to 9 conditions per place.
[2022-11-02 20:35:47,698 INFO L137 encePairwiseOnDemand]: 97/100 looper letters, 9 selfloop transitions, 2 changer transitions 0/85 dead transitions.
[2022-11-02 20:35:47,698 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 85 transitions, 204 flow
[2022-11-02 20:35:47,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2022-11-02 20:35:47,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2022-11-02 20:35:47,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions.
[2022-11-02 20:35:47,701 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.88
[2022-11-02 20:35:47,701 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 264 transitions.
[2022-11-02 20:35:47,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 264 transitions.
[2022-11-02 20:35:47,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2022-11-02 20:35:47,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 264 transitions.
[2022-11-02 20:35:47,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:35:47,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:35:47,705 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:35:47,705 INFO L175 Difference]: Start difference. First operand has 85 places, 82 transitions, 176 flow. Second operand 3 states and 264 transitions.
[2022-11-02 20:35:47,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 85 transitions, 204 flow
[2022-11-02 20:35:47,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 85 transitions, 202 flow, removed 0 selfloop flow, removed 1 redundant places.
[2022-11-02 20:35:47,708 INFO L231 Difference]: Finished difference. Result has 87 places, 83 transitions, 186 flow
[2022-11-02 20:35:47,709 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=87, PETRI_TRANSITIONS=83}
[2022-11-02 20:35:47,710 INFO L287 CegarLoopForPetriNet]: 85 programPoint places, 2 predicate places.
[2022-11-02 20:35:47,710 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 83 transitions, 186 flow
[2022-11-02 20:35:47,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:35:47,711 INFO L200 CegarLoopForPetriNet]: Found error trace
[2022-11-02 20:35:47,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:35:47,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2022-11-02 20:35:47,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:35:47,933 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2022-11-02 20:35:47,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:35:47,934 INFO L85 PathProgramCache]: Analyzing trace with hash 2020894135, now seen corresponding path program 1 times
[2022-11-02 20:35:47,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:35:47,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773410799]
[2022-11-02 20:35:47,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:35:47,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:35:47,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:35:48,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-11-02 20:35:48,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:35:48,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773410799]
[2022-11-02 20:35:48,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773410799] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-02 20:35:48,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229250746]
[2022-11-02 20:35:48,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:35:48,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:35:48,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:35:48,117 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-02 20:35:48,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-11-02 20:35:48,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:35:48,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjunts are in the unsatisfiable core
[2022-11-02 20:35:48,216 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:35:48,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-11-02 20:35:48,293 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:35:48,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-11-02 20:35:48,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229250746] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:35:48,370 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-11-02 20:35:48,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10
[2022-11-02 20:35:48,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831389123]
[2022-11-02 20:35:48,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:35:48,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2022-11-02 20:35:48,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:35:48,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2022-11-02 20:35:48,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90
[2022-11-02 20:35:48,384 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 100
[2022-11-02 20:35:48,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 83 transitions, 186 flow. Second operand has 10 states, 10 states have (on average 84.9) internal successors, (849), 10 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:35:48,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-02 20:35:48,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 100
[2022-11-02 20:35:48,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2022-11-02 20:35:48,487 INFO L130 PetriNetUnfolder]: 2/102 cut-off events.
[2022-11-02 20:35:48,487 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES.
[2022-11-02 20:35:48,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 102 events. 2/102 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 56 event pairs, 0 based on Foata normal form. 2/103 useless extension candidates. Maximal degree in co-relation 131. Up to 7 conditions per place.
[2022-11-02 20:35:48,489 INFO L137 encePairwiseOnDemand]: 94/100 looper letters, 9 selfloop transitions, 9 changer transitions 0/91 dead transitions.
[2022-11-02 20:35:48,489 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 91 transitions, 240 flow
[2022-11-02 20:35:48,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2022-11-02 20:35:48,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states.
[2022-11-02 20:35:48,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 767 transitions.
[2022-11-02 20:35:48,492 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8522222222222222
[2022-11-02 20:35:48,493 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 767 transitions.
[2022-11-02 20:35:48,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 767 transitions.
[2022-11-02 20:35:48,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2022-11-02 20:35:48,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 767 transitions.
[2022-11-02 20:35:48,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 85.22222222222223) internal successors, (767), 9 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:35:48,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 100.0) internal successors, (1000), 10 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:35:48,500 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 100.0) internal successors, (1000), 10 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:35:48,500 INFO L175 Difference]: Start difference. First operand has 87 places, 83 transitions, 186 flow. Second operand 9 states and 767 transitions.
[2022-11-02 20:35:48,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 91 transitions, 240 flow
[2022-11-02 20:35:48,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 91 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places.
[2022-11-02 20:35:48,504 INFO L231 Difference]: Finished difference. Result has 97 places, 89 transitions, 234 flow
[2022-11-02 20:35:48,504 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=234, PETRI_PLACES=97, PETRI_TRANSITIONS=89}
[2022-11-02 20:35:48,505 INFO L287 CegarLoopForPetriNet]: 85 programPoint places, 12 predicate places.
[2022-11-02 20:35:48,505 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 89 transitions, 234 flow
[2022-11-02 20:35:48,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 84.9) internal successors, (849), 10 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:35:48,506 INFO L200 CegarLoopForPetriNet]: Found error trace
[2022-11-02 20:35:48,507 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:35:48,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-11-02 20:35:48,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:35:48,723 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2022-11-02 20:35:48,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:35:48,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1756645101, now seen corresponding path program 2 times
[2022-11-02 20:35:48,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:35:48,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79663483]
[2022-11-02 20:35:48,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:35:48,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:35:48,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:35:48,903 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked.
[2022-11-02 20:35:48,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:35:48,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79663483]
[2022-11-02 20:35:48,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79663483] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-02 20:35:48,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604098286]
[2022-11-02 20:35:48,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-11-02 20:35:48,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:35:48,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:35:48,907 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-02 20:35:48,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-11-02 20:35:49,024 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-11-02 20:35:49,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-11-02 20:35:49,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 4 conjunts are in the unsatisfiable core
[2022-11-02 20:35:49,031 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:35:49,069 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked.
[2022-11-02 20:35:49,070 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:35:49,110 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked.
[2022-11-02 20:35:49,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604098286] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:35:49,111 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-11-02 20:35:49,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10
[2022-11-02 20:35:49,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917951835]
[2022-11-02 20:35:49,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:35:49,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2022-11-02 20:35:49,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:35:49,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2022-11-02 20:35:49,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90
[2022-11-02 20:35:49,116 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 100
[2022-11-02 20:35:49,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 89 transitions, 234 flow. Second operand has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:35:49,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-02 20:35:49,120 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 100
[2022-11-02 20:35:49,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2022-11-02 20:35:49,265 INFO L130 PetriNetUnfolder]: 2/109 cut-off events.
[2022-11-02 20:35:49,265 INFO L131 PetriNetUnfolder]: For 7/21 co-relation queries the response was YES.
[2022-11-02 20:35:49,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 109 events. 2/109 cut-off events. For 7/21 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 9/117 useless extension candidates. Maximal degree in co-relation 159. Up to 8 conditions per place.
[2022-11-02 20:35:49,269 INFO L137 encePairwiseOnDemand]: 94/100 looper letters, 10 selfloop transitions, 9 changer transitions 0/97 dead transitions.
[2022-11-02 20:35:49,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 97 transitions, 290 flow
[2022-11-02 20:35:49,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2022-11-02 20:35:49,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states.
[2022-11-02 20:35:49,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 759 transitions.
[2022-11-02 20:35:49,272 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8433333333333334
[2022-11-02 20:35:49,272 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 759 transitions.
[2022-11-02 20:35:49,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 759 transitions.
[2022-11-02 20:35:49,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2022-11-02 20:35:49,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 759 transitions.
[2022-11-02 20:35:49,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 84.33333333333333) internal successors, (759), 9 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:35:49,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 100.0) internal successors, (1000), 10 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:35:49,277 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 100.0) internal successors, (1000), 10 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:35:49,277 INFO L175 Difference]: Start difference. First operand has 97 places, 89 transitions, 234 flow. Second operand 9 states and 759 transitions.
[2022-11-02 20:35:49,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 97 transitions, 290 flow
[2022-11-02 20:35:49,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 97 transitions, 284 flow, removed 2 selfloop flow, removed 1 redundant places.
[2022-11-02 20:35:49,283 INFO L231 Difference]: Finished difference. Result has 107 places, 95 transitions, 278 flow
[2022-11-02 20:35:49,284 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=278, PETRI_PLACES=107, PETRI_TRANSITIONS=95}
[2022-11-02 20:35:49,287 INFO L287 CegarLoopForPetriNet]: 85 programPoint places, 22 predicate places.
[2022-11-02 20:35:49,287 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 95 transitions, 278 flow
[2022-11-02 20:35:49,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:35:49,288 INFO L200 CegarLoopForPetriNet]: Found error trace
[2022-11-02 20:35:49,288 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:35:49,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2022-11-02 20:35:49,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:35:49,515 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2022-11-02 20:35:49,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:35:49,516 INFO L85 PathProgramCache]: Analyzing trace with hash 208419167, now seen corresponding path program 3 times
[2022-11-02 20:35:49,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:35:49,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340069501]
[2022-11-02 20:35:49,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:35:49,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:35:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:35:49,713 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked.
[2022-11-02 20:35:49,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:35:49,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340069501]
[2022-11-02 20:35:49,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340069501] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-02 20:35:49,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613623318]
[2022-11-02 20:35:49,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-11-02 20:35:49,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:35:49,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:35:49,716 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-02 20:35:49,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2022-11-02 20:35:49,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2022-11-02 20:35:49,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-11-02 20:35:49,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 8 conjunts are in the unsatisfiable core
[2022-11-02 20:35:49,871 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:35:49,995 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked.
[2022-11-02 20:35:49,996 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:35:50,152 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked.
[2022-11-02 20:35:50,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613623318] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:35:50,153 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-11-02 20:35:50,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23
[2022-11-02 20:35:50,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072030073]
[2022-11-02 20:35:50,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:35:50,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2022-11-02 20:35:50,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:35:50,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2022-11-02 20:35:50,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506
[2022-11-02 20:35:50,162 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 100
[2022-11-02 20:35:50,164 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 95 transitions, 278 flow. Second operand has 23 states, 23 states have (on average 77.6086956521739) internal successors, (1785), 23 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:35:50,164 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-02 20:35:50,164 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 100
[2022-11-02 20:35:50,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2022-11-02 20:35:56,698 INFO L130 PetriNetUnfolder]: 673/1895 cut-off events.
[2022-11-02 20:35:56,698 INFO L131 PetriNetUnfolder]: For 2216/2216 co-relation queries the response was YES.
[2022-11-02 20:35:56,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5373 conditions, 1895 events. 673/1895 cut-off events. For 2216/2216 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 10475 event pairs, 20 based on Foata normal form. 116/2008 useless extension candidates. Maximal degree in co-relation 5362. Up to 231 conditions per place.
[2022-11-02 20:35:56,715 INFO L137 encePairwiseOnDemand]: 89/100 looper letters, 325 selfloop transitions, 451 changer transitions 0/840 dead transitions.
[2022-11-02 20:35:56,716 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 840 transitions, 5686 flow
[2022-11-02 20:35:56,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states.
[2022-11-02 20:35:56,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states.
[2022-11-02 20:35:56,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 17415 transitions.
[2022-11-02 20:35:56,745 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7880090497737556
[2022-11-02 20:35:56,746 INFO L72 ComplementDD]: Start complementDD. Operand 221 states and 17415 transitions.
[2022-11-02 20:35:56,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 221 states and 17415 transitions.
[2022-11-02 20:35:56,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2022-11-02 20:35:56,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 221 states and 17415 transitions.
[2022-11-02 20:35:56,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 222 states, 221 states have (on average 78.80090497737557) internal successors, (17415), 221 states have internal predecessors, (17415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:35:56,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 222 states, 222 states have (on average 100.0) internal successors, (22200), 222 states have internal predecessors, (22200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:35:56,880 INFO L81 ComplementDD]: Finished complementDD. Result has 222 states, 222 states have (on average 100.0) internal successors, (22200), 222 states have internal predecessors, (22200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:35:56,881 INFO L175 Difference]: Start difference. First operand has 107 places, 95 transitions, 278 flow. Second operand 221 states and 17415 transitions.
[2022-11-02 20:35:56,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 840 transitions, 5686 flow
[2022-11-02 20:35:56,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 840 transitions, 5486 flow, removed 80 selfloop flow, removed 1 redundant places.
[2022-11-02 20:35:56,912 INFO L231 Difference]: Finished difference. Result has 426 places, 570 transitions, 4232 flow
[2022-11-02 20:35:56,913 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=221, PETRI_FLOW=4232, PETRI_PLACES=426, PETRI_TRANSITIONS=570}
[2022-11-02 20:35:56,914 INFO L287 CegarLoopForPetriNet]: 85 programPoint places, 341 predicate places.
[2022-11-02 20:35:56,914 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 570 transitions, 4232 flow
[2022-11-02 20:35:56,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 77.6086956521739) internal successors, (1785), 23 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:35:56,915 INFO L200 CegarLoopForPetriNet]: Found error trace
[2022-11-02 20:35:56,916 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:35:56,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2022-11-02 20:35:57,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2022-11-02 20:35:57,135 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2022-11-02 20:35:57,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:35:57,136 INFO L85 PathProgramCache]: Analyzing trace with hash 102438394, now seen corresponding path program 4 times
[2022-11-02 20:35:57,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:35:57,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697699850]
[2022-11-02 20:35:57,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:35:57,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:35:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:35:57,432 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 13 proven. 34 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked.
[2022-11-02 20:35:57,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:35:57,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697699850]
[2022-11-02 20:35:57,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697699850] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-02 20:35:57,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191230054]
[2022-11-02 20:35:57,433 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2022-11-02 20:35:57,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:35:57,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:35:57,434 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-02 20:35:57,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2022-11-02 20:35:57,542 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2022-11-02 20:35:57,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-11-02 20:35:57,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 10 conjunts are in the unsatisfiable core
[2022-11-02 20:35:57,550 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:35:57,679 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 13 proven. 34 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked.
[2022-11-02 20:35:57,679 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:35:57,925 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 13 proven. 34 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked.
[2022-11-02 20:35:57,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191230054] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:35:57,926 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-11-02 20:35:57,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22
[2022-11-02 20:35:57,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036727564]
[2022-11-02 20:35:57,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:35:57,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2022-11-02 20:35:57,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:35:57,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2022-11-02 20:35:57,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462
[2022-11-02 20:35:57,994 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 100
[2022-11-02 20:35:57,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 570 transitions, 4232 flow. Second operand has 22 states, 22 states have (on average 84.0) internal successors, (1848), 22 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:35:57,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-02 20:35:57,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 100
[2022-11-02 20:35:57,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2022-11-02 20:35:59,043 INFO L130 PetriNetUnfolder]: 471/1636 cut-off events.
[2022-11-02 20:35:59,043 INFO L131 PetriNetUnfolder]: For 64321/65245 co-relation queries the response was YES.
[2022-11-02 20:35:59,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9476 conditions, 1636 events. 471/1636 cut-off events. For 64321/65245 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 10158 event pairs, 75 based on Foata normal form. 231/1802 useless extension candidates. Maximal degree in co-relation 9365. Up to 259 conditions per place.
[2022-11-02 20:35:59,082 INFO L137 encePairwiseOnDemand]: 94/100 looper letters, 16 selfloop transitions, 331 changer transitions 0/668 dead transitions.
[2022-11-02 20:35:59,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 668 transitions, 6050 flow
[2022-11-02 20:35:59,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2022-11-02 20:35:59,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states.
[2022-11-02 20:35:59,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2262 transitions.
[2022-11-02 20:35:59,094 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8377777777777777
[2022-11-02 20:35:59,094 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2262 transitions.
[2022-11-02 20:35:59,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2262 transitions.
[2022-11-02 20:35:59,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2022-11-02 20:35:59,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2262 transitions.
[2022-11-02 20:35:59,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 83.77777777777777) internal successors, (2262), 27 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:35:59,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 100.0) internal successors, (2800), 28 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:35:59,113 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 100.0) internal successors, (2800), 28 states have internal predecessors, (2800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:35:59,113 INFO L175 Difference]: Start difference. First operand has 426 places, 570 transitions, 4232 flow. Second operand 27 states and 2262 transitions.
[2022-11-02 20:35:59,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 668 transitions, 6050 flow
[2022-11-02 20:35:59,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 668 transitions, 5466 flow, removed 106 selfloop flow, removed 12 redundant places.
[2022-11-02 20:35:59,548 INFO L231 Difference]: Finished difference. Result has 446 places, 661 transitions, 5483 flow
[2022-11-02 20:35:59,549 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=3648, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=5483, PETRI_PLACES=446, PETRI_TRANSITIONS=661}
[2022-11-02 20:35:59,550 INFO L287 CegarLoopForPetriNet]: 85 programPoint places, 361 predicate places.
[2022-11-02 20:35:59,550 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 661 transitions, 5483 flow
[2022-11-02 20:35:59,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 84.0) internal successors, (1848), 22 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:35:59,551 INFO L200 CegarLoopForPetriNet]: Found error trace
[2022-11-02 20:35:59,551 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:35:59,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2022-11-02 20:35:59,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6
[2022-11-02 20:35:59,779 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2022-11-02 20:35:59,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:35:59,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1691343597, now seen corresponding path program 5 times
[2022-11-02 20:35:59,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:35:59,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682306759]
[2022-11-02 20:35:59,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:35:59,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:35:59,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:36:00,327 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 124 proven. 175 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked.
[2022-11-02 20:36:00,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:36:00,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682306759]
[2022-11-02 20:36:00,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682306759] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-02 20:36:00,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613378806]
[2022-11-02 20:36:00,328 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2022-11-02 20:36:00,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:36:00,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:36:00,331 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-02 20:36:00,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2022-11-02 20:36:00,430 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s)
[2022-11-02 20:36:00,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-11-02 20:36:00,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 16 conjunts are in the unsatisfiable core
[2022-11-02 20:36:00,437 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:36:00,611 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 124 proven. 175 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked.
[2022-11-02 20:36:00,611 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:36:00,975 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 124 proven. 175 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked.
[2022-11-02 20:36:00,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613378806] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:36:00,976 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-11-02 20:36:00,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34
[2022-11-02 20:36:00,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288678820]
[2022-11-02 20:36:00,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:36:00,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states
[2022-11-02 20:36:00,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:36:00,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2022-11-02 20:36:00,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122
[2022-11-02 20:36:00,980 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 100
[2022-11-02 20:36:00,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 661 transitions, 5483 flow. Second operand has 34 states, 34 states have (on average 84.97058823529412) internal successors, (2889), 34 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:36:00,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-02 20:36:00,983 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 100
[2022-11-02 20:36:00,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2022-11-02 20:36:03,840 INFO L130 PetriNetUnfolder]: 983/3353 cut-off events.
[2022-11-02 20:36:03,841 INFO L131 PetriNetUnfolder]: For 249438/250913 co-relation queries the response was YES.
[2022-11-02 20:36:03,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16092 conditions, 3353 events. 983/3353 cut-off events. For 249438/250913 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 23375 event pairs, 155 based on Foata normal form. 98/3381 useless extension candidates. Maximal degree in co-relation 15975. Up to 524 conditions per place.
[2022-11-02 20:36:03,940 INFO L137 encePairwiseOnDemand]: 94/100 looper letters, 121 selfloop transitions, 495 changer transitions 0/1018 dead transitions.
[2022-11-02 20:36:03,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 1018 transitions, 9447 flow
[2022-11-02 20:36:03,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states.
[2022-11-02 20:36:03,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states.
[2022-11-02 20:36:03,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 3809 transitions.
[2022-11-02 20:36:03,948 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8464444444444444
[2022-11-02 20:36:03,948 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 3809 transitions.
[2022-11-02 20:36:03,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 3809 transitions.
[2022-11-02 20:36:03,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2022-11-02 20:36:03,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 3809 transitions.
[2022-11-02 20:36:03,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 84.64444444444445) internal successors, (3809), 45 states have internal predecessors, (3809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:36:04,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 100.0) internal successors, (4600), 46 states have internal predecessors, (4600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:36:04,095 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 100.0) internal successors, (4600), 46 states have internal predecessors, (4600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:36:04,095 INFO L175 Difference]: Start difference. First operand has 446 places, 661 transitions, 5483 flow. Second operand 45 states and 3809 transitions.
[2022-11-02 20:36:04,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 1018 transitions, 9447 flow
[2022-11-02 20:36:04,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 1018 transitions, 8595 flow, removed 186 selfloop flow, removed 39 redundant places.
[2022-11-02 20:36:04,486 INFO L231 Difference]: Finished difference. Result has 460 places, 936 transitions, 7793 flow
[2022-11-02 20:36:04,487 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=4631, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=661, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=7793, PETRI_PLACES=460, PETRI_TRANSITIONS=936}
[2022-11-02 20:36:04,488 INFO L287 CegarLoopForPetriNet]: 85 programPoint places, 375 predicate places.
[2022-11-02 20:36:04,488 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 936 transitions, 7793 flow
[2022-11-02 20:36:04,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 84.97058823529412) internal successors, (2889), 34 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:36:04,489 INFO L200 CegarLoopForPetriNet]: Found error trace
[2022-11-02 20:36:04,490 INFO L208 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:36:04,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2022-11-02 20:36:04,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:36:04,703 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] ===
[2022-11-02 20:36:04,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:36:04,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1073760361, now seen corresponding path program 6 times
[2022-11-02 20:36:04,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:36:04,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621842378]
[2022-11-02 20:36:04,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:36:04,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:36:04,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:36:05,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1044 backedges. 102 proven. 855 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked.
[2022-11-02 20:36:05,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:36:05,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621842378]
[2022-11-02 20:36:05,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621842378] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-02 20:36:05,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148853095]
[2022-11-02 20:36:05,969 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2022-11-02 20:36:05,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:36:05,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:36:05,979 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-02 20:36:06,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e0d5801-fc7a-4cbd-9e01-e2a54b57cb13/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2022-11-02 20:36:06,142 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s)
[2022-11-02 20:36:06,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-11-02 20:36:06,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 20 conjunts are in the unsatisfiable core
[2022-11-02 20:36:06,148 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:36:06,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1044 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 855 trivial. 0 not checked.
[2022-11-02 20:36:06,867 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:36:07,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1044 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 855 trivial. 0 not checked.
[2022-11-02 20:36:07,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148853095] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:36:07,861 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-11-02 20:36:07,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 21, 21] total 71
[2022-11-02 20:36:07,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380835739]
[2022-11-02 20:36:07,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:36:07,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states
[2022-11-02 20:36:07,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:36:07,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants.
[2022-11-02 20:36:07,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=707, Invalid=4263, Unknown=0, NotChecked=0, Total=4970
[2022-11-02 20:36:07,870 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 100
[2022-11-02 20:36:07,874 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 936 transitions, 7793 flow. Second operand has 71 states, 71 states have (on average 77.30985915492958) internal successors, (5489), 71 states have internal predecessors, (5489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-11-02 20:36:07,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2022-11-02 20:36:07,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 100
[2022-11-02 20:36:07,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand