./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c --full-output --architecture 32bit


--------------------------------------------------------------------------------


Checking for ERROR reachability
Using default analysis
Version b2eff8ba
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9279ae6f-24bb-4da9-b428-9c8d5e3372d4/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9279ae6f-24bb-4da9-b428-9c8d5e3372d4/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9279ae6f-24bb-4da9-b428-9c8d5e3372d4/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9279ae6f-24bb-4da9-b428-9c8d5e3372d4/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9279ae6f-24bb-4da9-b428-9c8d5e3372d4/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9279ae6f-24bb-4da9-b428-9c8d5e3372d4/bin/uautomizer-UnR33cPsHg --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 89f85a9c071b9d85a8a89a1542b8738a051beeaf8ef3f8b389c5a92dd50b70df
......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Execution finished normally
Writing output log to file Ultimate.log
Result:
TRUE
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-b2eff8b
[2021-10-28 09:05:10,756 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2021-10-28 09:05:10,758 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2021-10-28 09:05:10,794 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-10-28 09:05:10,795 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-10-28 09:05:10,797 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-10-28 09:05:10,799 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-10-28 09:05:10,802 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2021-10-28 09:05:10,805 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-10-28 09:05:10,807 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-10-28 09:05:10,808 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2021-10-28 09:05:10,810 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-10-28 09:05:10,811 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-10-28 09:05:10,813 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-10-28 09:05:10,815 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-10-28 09:05:10,817 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-10-28 09:05:10,819 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-10-28 09:05:10,821 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-10-28 09:05:10,824 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-10-28 09:05:10,827 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2021-10-28 09:05:10,830 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-10-28 09:05:10,832 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-10-28 09:05:10,834 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2021-10-28 09:05:10,836 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-10-28 09:05:10,841 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-10-28 09:05:10,841 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-10-28 09:05:10,842 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-10-28 09:05:10,844 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-10-28 09:05:10,845 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-10-28 09:05:10,847 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-10-28 09:05:10,847 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-10-28 09:05:10,849 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-10-28 09:05:10,850 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-10-28 09:05:10,852 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2021-10-28 09:05:10,853 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-10-28 09:05:10,854 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2021-10-28 09:05:10,855 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-10-28 09:05:10,855 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-10-28 09:05:10,855 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2021-10-28 09:05:10,857 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2021-10-28 09:05:10,858 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-10-28 09:05:10,859 INFO  L101        SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9279ae6f-24bb-4da9-b428-9c8d5e3372d4/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-10-28 09:05:10,890 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-10-28 09:05:10,891 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-10-28 09:05:10,891 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-10-28 09:05:10,892 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-10-28 09:05:10,893 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-10-28 09:05:10,894 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-10-28 09:05:10,894 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-10-28 09:05:10,894 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-10-28 09:05:10,895 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-10-28 09:05:10,895 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-10-28 09:05:10,895 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-10-28 09:05:10,895 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-10-28 09:05:10,896 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-10-28 09:05:10,896 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-10-28 09:05:10,896 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-10-28 09:05:10,897 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-10-28 09:05:10,897 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-10-28 09:05:10,897 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-10-28 09:05:10,897 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-10-28 09:05:10,898 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-10-28 09:05:10,898 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-10-28 09:05:10,898 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-10-28 09:05:10,899 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-10-28 09:05:10,899 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-10-28 09:05:10,899 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-10-28 09:05:10,899 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-10-28 09:05:10,900 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-10-28 09:05:10,900 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-10-28 09:05:10,900 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-10-28 09:05:10,901 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2021-10-28 09:05:10,901 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-10-28 09:05:10,901 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2021-10-28 09:05:10,902 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_9279ae6f-24bb-4da9-b428-9c8d5e3372d4/bin/uautomizer-UnR33cPsHg/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_9279ae6f-24bb-4da9-b428-9c8d5e3372d4/bin/uautomizer-UnR33cPsHg
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 -> 89f85a9c071b9d85a8a89a1542b8738a051beeaf8ef3f8b389c5a92dd50b70df
[2021-10-28 09:05:11,265 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-10-28 09:05:11,293 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-10-28 09:05:11,297 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-10-28 09:05:11,298 INFO  L271        PluginConnector]: Initializing CDTParser...
[2021-10-28 09:05:11,300 INFO  L275        PluginConnector]: CDTParser initialized
[2021-10-28 09:05:11,301 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9279ae6f-24bb-4da9-b428-9c8d5e3372d4/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c
[2021-10-28 09:05:11,405 INFO  L220              CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9279ae6f-24bb-4da9-b428-9c8d5e3372d4/bin/uautomizer-UnR33cPsHg/data/e5cacf8fe/50fbcfad23154686806b43775bcb8aa4/FLAGb6263d1b6
[2021-10-28 09:05:12,134 INFO  L306              CDTParser]: Found 1 translation units.
[2021-10-28 09:05:12,136 INFO  L160              CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9279ae6f-24bb-4da9-b428-9c8d5e3372d4/sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c
[2021-10-28 09:05:12,154 INFO  L349              CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9279ae6f-24bb-4da9-b428-9c8d5e3372d4/bin/uautomizer-UnR33cPsHg/data/e5cacf8fe/50fbcfad23154686806b43775bcb8aa4/FLAGb6263d1b6
[2021-10-28 09:05:12,451 INFO  L357              CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9279ae6f-24bb-4da9-b428-9c8d5e3372d4/bin/uautomizer-UnR33cPsHg/data/e5cacf8fe/50fbcfad23154686806b43775bcb8aa4
[2021-10-28 09:05:12,457 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-10-28 09:05:12,462 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2021-10-28 09:05:12,467 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-10-28 09:05:12,467 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-10-28 09:05:12,472 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2021-10-28 09:05:12,473 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:05:12" (1/1) ...
[2021-10-28 09:05:12,476 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78586699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:05:12, skipping insertion in model container
[2021-10-28 09:05:12,477 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:05:12" (1/1) ...
[2021-10-28 09:05:12,491 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2021-10-28 09:05:12,525 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2021-10-28 09:05:12,792 WARN  L228   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_9279ae6f-24bb-4da9-b428-9c8d5e3372d4/sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c[2696,2709]
[2021-10-28 09:05:12,802 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2021-10-28 09:05:12,818 INFO  L203         MainTranslator]: Completed pre-run
[2021-10-28 09:05:12,849 WARN  L228   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_9279ae6f-24bb-4da9-b428-9c8d5e3372d4/sv-benchmarks/c/weaver/popl20-queue-add-2.wvr.c[2696,2709]
[2021-10-28 09:05:12,854 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2021-10-28 09:05:12,874 INFO  L208         MainTranslator]: Completed translation
[2021-10-28 09:05:12,874 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:05:12 WrapperNode
[2021-10-28 09:05:12,875 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-10-28 09:05:12,876 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-10-28 09:05:12,877 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-10-28 09:05:12,877 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-10-28 09:05:12,888 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:05:12" (1/1) ...
[2021-10-28 09:05:12,899 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:05:12" (1/1) ...
[2021-10-28 09:05:12,933 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-10-28 09:05:12,934 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-10-28 09:05:12,935 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-10-28 09:05:12,935 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-10-28 09:05:12,945 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:05:12" (1/1) ...
[2021-10-28 09:05:12,946 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:05:12" (1/1) ...
[2021-10-28 09:05:12,949 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:05:12" (1/1) ...
[2021-10-28 09:05:12,950 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:05:12" (1/1) ...
[2021-10-28 09:05:12,959 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:05:12" (1/1) ...
[2021-10-28 09:05:12,965 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:05:12" (1/1) ...
[2021-10-28 09:05:12,967 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:05:12" (1/1) ...
[2021-10-28 09:05:12,971 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-10-28 09:05:12,972 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-10-28 09:05:12,972 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-10-28 09:05:12,973 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-10-28 09:05:12,989 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:05:12" (1/1) ...
[2021-10-28 09:05:12,999 INFO  L170          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-10-28 09:05:13,013 INFO  L189       MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9279ae6f-24bb-4da9-b428-9c8d5e3372d4/bin/uautomizer-UnR33cPsHg/z3
[2021-10-28 09:05:13,029 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9279ae6f-24bb-4da9-b428-9c8d5e3372d4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-10-28 09:05:13,050 INFO  L327       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9279ae6f-24bb-4da9-b428-9c8d5e3372d4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-10-28 09:05:13,097 INFO  L130     BoogieDeclarations]: Found specification of procedure thread1
[2021-10-28 09:05:13,097 INFO  L138     BoogieDeclarations]: Found implementation of procedure thread1
[2021-10-28 09:05:13,097 INFO  L130     BoogieDeclarations]: Found specification of procedure thread2
[2021-10-28 09:05:13,098 INFO  L138     BoogieDeclarations]: Found implementation of procedure thread2
[2021-10-28 09:05:13,098 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2021-10-28 09:05:13,099 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-10-28 09:05:13,099 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2021-10-28 09:05:13,099 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end
[2021-10-28 09:05:13,099 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin
[2021-10-28 09:05:13,100 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2021-10-28 09:05:13,100 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-10-28 09:05:13,101 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-10-28 09:05:13,101 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2021-10-28 09:05:13,101 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-10-28 09:05:13,103 WARN  L209             CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement
[2021-10-28 09:05:13,967 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-10-28 09:05:13,967 INFO  L299             CfgBuilder]: Removed 27 assume(true) statements.
[2021-10-28 09:05:13,970 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:05:13 BoogieIcfgContainer
[2021-10-28 09:05:13,970 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-10-28 09:05:13,973 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-10-28 09:05:13,973 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-10-28 09:05:13,977 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-10-28 09:05:13,978 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:05:12" (1/3) ...
[2021-10-28 09:05:13,979 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@506e31a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:05:13, skipping insertion in model container
[2021-10-28 09:05:13,979 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:05:12" (2/3) ...
[2021-10-28 09:05:13,980 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@506e31a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:05:13, skipping insertion in model container
[2021-10-28 09:05:13,980 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:05:13" (3/3) ...
[2021-10-28 09:05:13,982 INFO  L111   eAbstractionObserver]: Analyzing ICFG popl20-queue-add-2.wvr.c
[2021-10-28 09:05:13,989 WARN  L149   ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2021-10-28 09:05:13,990 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-10-28 09:05:13,990 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-10-28 09:05:13,990 INFO  L513   ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2021-10-28 09:05:14,028 WARN  L313   ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,029 WARN  L313   ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,029 WARN  L313   ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,030 WARN  L313   ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,030 WARN  L313   ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,030 WARN  L313   ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,031 WARN  L313   ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,031 WARN  L313   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,031 WARN  L313   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,031 WARN  L313   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,032 WARN  L313   ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,032 WARN  L313   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,032 WARN  L313   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,032 WARN  L313   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,033 WARN  L313   ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,033 WARN  L313   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,033 WARN  L313   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,034 WARN  L313   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,034 WARN  L313   ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,034 WARN  L313   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,035 WARN  L313   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,035 WARN  L313   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,035 WARN  L313   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,035 WARN  L313   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,036 WARN  L313   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,036 WARN  L313   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,036 WARN  L313   ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,036 WARN  L313   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,037 WARN  L313   ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,037 WARN  L313   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,037 WARN  L313   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,038 WARN  L313   ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,038 WARN  L313   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,038 WARN  L313   ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,038 WARN  L313   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,039 WARN  L313   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,039 WARN  L313   ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,040 WARN  L313   ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,040 WARN  L313   ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,040 WARN  L313   ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,040 WARN  L313   ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,041 WARN  L313   ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,041 WARN  L313   ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,041 WARN  L313   ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,041 WARN  L313   ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,042 WARN  L313   ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,042 WARN  L313   ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,042 WARN  L313   ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,043 WARN  L313   ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,043 WARN  L313   ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,043 WARN  L313   ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,043 WARN  L313   ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,044 WARN  L313   ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,044 WARN  L313   ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,044 WARN  L313   ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,044 WARN  L313   ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,045 WARN  L313   ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,045 WARN  L313   ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,049 WARN  L313   ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,049 WARN  L313   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,049 WARN  L313   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,050 WARN  L313   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,050 WARN  L313   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,050 WARN  L313   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,051 WARN  L313   ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,051 WARN  L313   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,051 WARN  L313   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,051 WARN  L313   ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,053 WARN  L313   ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,054 WARN  L313   ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,054 WARN  L313   ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,054 WARN  L313   ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,055 WARN  L313   ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,055 WARN  L313   ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,055 WARN  L313   ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-10-28 09:05:14,062 INFO  L148    ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions.
[2021-10-28 09:05:14,125 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-10-28 09:05:14,134 INFO  L339      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, mLoopAccelerationTechnique=FAST_UPR
[2021-10-28 09:05:14,134 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 3 error locations.
[2021-10-28 09:05:14,152 INFO  L74            FinitePrefix]: Start finitePrefix. Operand has 118 places, 122 transitions, 260 flow
[2021-10-28 09:05:14,303 INFO  L129       PetriNetUnfolder]: 11/120 cut-off events.
[2021-10-28 09:05:14,303 INFO  L130       PetriNetUnfolder]: For 2/2 co-relation queries the response was YES.
[2021-10-28 09:05:14,308 INFO  L84            FinitePrefix]: Finished finitePrefix Result has 129 conditions, 120 events. 11/120 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 69 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 88. Up to 3 conditions per place. 
[2021-10-28 09:05:14,308 INFO  L82        GeneralOperation]: Start removeDead. Operand has 118 places, 122 transitions, 260 flow
[2021-10-28 09:05:14,316 INFO  L88        GeneralOperation]: Finished RemoveDead, result has has 108 places, 112 transitions, 236 flow
[2021-10-28 09:05:14,347 INFO  L129       PetriNetUnfolder]: 11/111 cut-off events.
[2021-10-28 09:05:14,347 INFO  L130       PetriNetUnfolder]: For 2/2 co-relation queries the response was YES.
[2021-10-28 09:05:14,348 INFO  L246   CegarLoopForPetriNet]: Found error trace
[2021-10-28 09:05:14,349 INFO  L254   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, 1, 1, 1, 1, 1, 1]
[2021-10-28 09:05:14,349 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] ===
[2021-10-28 09:05:14,356 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 09:05:14,357 INFO  L85        PathProgramCache]: Analyzing trace with hash 1293032669, now seen corresponding path program 1 times
[2021-10-28 09:05:14,369 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 09:05:14,370 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409877850]
[2021-10-28 09:05:14,370 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 09:05:14,371 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 09:05:14,513 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 09:05:14,633 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 09:05:14,634 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 09:05:14,635 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409877850]
[2021-10-28 09:05:14,636 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409877850] provided 1 perfect and 0 imperfect interpolant sequences
[2021-10-28 09:05:14,636 INFO  L186   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-28 09:05:14,636 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-10-28 09:05:14,638 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328523119]
[2021-10-28 09:05:14,651 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2021-10-28 09:05:14,651 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 09:05:14,667 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2021-10-28 09:05:14,670 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-10-28 09:05:14,672 INFO  L499   CegarLoopForPetriNet]: Number of universal loopers: 113 out of 122
[2021-10-28 09:05:14,676 INFO  L92    encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 112 transitions, 236 flow. Second operand  has 2 states, 2 states have (on average 114.5) internal successors, (229), 2 states have internal predecessors, (229), 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)
[2021-10-28 09:05:14,677 INFO  L101   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2021-10-28 09:05:14,677 INFO  L102   encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 122
[2021-10-28 09:05:14,679 INFO  L74            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2021-10-28 09:05:14,711 INFO  L129       PetriNetUnfolder]: 3/104 cut-off events.
[2021-10-28 09:05:14,712 INFO  L130       PetriNetUnfolder]: For 2/2 co-relation queries the response was YES.
[2021-10-28 09:05:14,713 INFO  L84            FinitePrefix]: Finished finitePrefix Result has 114 conditions, 104 events. 3/104 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 53 event pairs, 0 based on Foata normal form. 7/104 useless extension candidates. Maximal degree in co-relation 110. Up to 2 conditions per place. 
[2021-10-28 09:05:14,715 INFO  L132   encePairwiseOnDemand]: 114/122 looper letters, 0 selfloop transitions, 0 changer transitions 4/104 dead transitions.
[2021-10-28 09:05:14,715 INFO  L138   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 104 transitions, 220 flow
[2021-10-28 09:05:14,715 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-10-28 09:05:14,718 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2 states.
[2021-10-28 09:05:14,728 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 234 transitions.
[2021-10-28 09:05:14,731 INFO  L544   CegarLoopForPetriNet]: DFA transition density 0.9590163934426229
[2021-10-28 09:05:14,732 INFO  L72            ComplementDD]: Start complementDD. Operand 2 states and 234 transitions.
[2021-10-28 09:05:14,733 INFO  L73         IsDeterministic]: Start isDeterministic. Operand 2 states and 234 transitions.
[2021-10-28 09:05:14,735 INFO  L80         IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2021-10-28 09:05:14,738 INFO  L117    ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 234 transitions.
[2021-10-28 09:05:14,752 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends  has 3 states, 2 states have (on average 117.0) internal successors, (234), 2 states have internal predecessors, (234), 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)
[2021-10-28 09:05:14,762 INFO  L131    ReachableStatesCopy]: Finished reachableStatesCopy Result  has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 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)
[2021-10-28 09:05:14,763 INFO  L81            ComplementDD]: Finished complementDD. Result  has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 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)
[2021-10-28 09:05:14,765 INFO  L186             Difference]: Start difference. First operand has 108 places, 112 transitions, 236 flow. Second operand 2 states and 234 transitions.
[2021-10-28 09:05:14,766 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 104 transitions, 220 flow
[2021-10-28 09:05:14,775 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 104 transitions, 212 flow, removed 0 selfloop flow, removed 4 redundant places.
[2021-10-28 09:05:14,786 INFO  L242             Difference]: Finished difference. Result has 105 places, 100 transitions, 204 flow
[2021-10-28 09:05:14,789 INFO  L317   CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=204, PETRI_PLACES=105, PETRI_TRANSITIONS=100}
[2021-10-28 09:05:14,790 INFO  L334   CegarLoopForPetriNet]: 108 programPoint places, -3 predicate places.
[2021-10-28 09:05:14,791 INFO  L470      AbstractCegarLoop]: Abstraction has has 105 places, 100 transitions, 204 flow
[2021-10-28 09:05:14,792 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 114.5) internal successors, (229), 2 states have internal predecessors, (229), 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)
[2021-10-28 09:05:14,792 INFO  L246   CegarLoopForPetriNet]: Found error trace
[2021-10-28 09:05:14,793 INFO  L254   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, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 09:05:14,793 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-10-28 09:05:14,794 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] ===
[2021-10-28 09:05:14,796 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 09:05:14,797 INFO  L85        PathProgramCache]: Analyzing trace with hash 1607035987, now seen corresponding path program 1 times
[2021-10-28 09:05:14,797 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 09:05:14,798 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359454128]
[2021-10-28 09:05:14,798 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 09:05:14,799 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 09:05:14,945 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 09:05:15,164 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 09:05:15,164 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 09:05:15,164 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359454128]
[2021-10-28 09:05:15,165 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359454128] provided 1 perfect and 0 imperfect interpolant sequences
[2021-10-28 09:05:15,165 INFO  L186   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-28 09:05:15,165 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2021-10-28 09:05:15,166 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591491460]
[2021-10-28 09:05:15,168 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-10-28 09:05:15,168 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 09:05:15,169 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-10-28 09:05:15,170 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2021-10-28 09:05:15,173 INFO  L499   CegarLoopForPetriNet]: Number of universal loopers: 96 out of 122
[2021-10-28 09:05:15,175 INFO  L92    encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 100 transitions, 204 flow. Second operand  has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 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)
[2021-10-28 09:05:15,175 INFO  L101   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2021-10-28 09:05:15,176 INFO  L102   encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 122
[2021-10-28 09:05:15,176 INFO  L74            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2021-10-28 09:05:15,380 INFO  L129       PetriNetUnfolder]: 7/149 cut-off events.
[2021-10-28 09:05:15,380 INFO  L130       PetriNetUnfolder]: For 0/0 co-relation queries the response was YES.
[2021-10-28 09:05:15,383 INFO  L84            FinitePrefix]: Finished finitePrefix Result has 184 conditions, 149 events. 7/149 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 186 event pairs, 2 based on Foata normal form. 3/144 useless extension candidates. Maximal degree in co-relation 181. Up to 19 conditions per place. 
[2021-10-28 09:05:15,385 INFO  L132   encePairwiseOnDemand]: 112/122 looper letters, 15 selfloop transitions, 6 changer transitions 1/105 dead transitions.
[2021-10-28 09:05:15,385 INFO  L138   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 105 transitions, 258 flow
[2021-10-28 09:05:15,386 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-10-28 09:05:15,386 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 7 states.
[2021-10-28 09:05:15,393 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 697 transitions.
[2021-10-28 09:05:15,396 INFO  L544   CegarLoopForPetriNet]: DFA transition density 0.8161592505854801
[2021-10-28 09:05:15,396 INFO  L72            ComplementDD]: Start complementDD. Operand 7 states and 697 transitions.
[2021-10-28 09:05:15,396 INFO  L73         IsDeterministic]: Start isDeterministic. Operand 7 states and 697 transitions.
[2021-10-28 09:05:15,397 INFO  L80         IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2021-10-28 09:05:15,398 INFO  L117    ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 697 transitions.
[2021-10-28 09:05:15,403 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends  has 8 states, 7 states have (on average 99.57142857142857) internal successors, (697), 7 states have internal predecessors, (697), 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)
[2021-10-28 09:05:15,409 INFO  L131    ReachableStatesCopy]: Finished reachableStatesCopy Result  has 8 states, 8 states have (on average 122.0) internal successors, (976), 8 states have internal predecessors, (976), 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)
[2021-10-28 09:05:15,411 INFO  L81            ComplementDD]: Finished complementDD. Result  has 8 states, 8 states have (on average 122.0) internal successors, (976), 8 states have internal predecessors, (976), 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)
[2021-10-28 09:05:15,411 INFO  L186             Difference]: Start difference. First operand has 105 places, 100 transitions, 204 flow. Second operand 7 states and 697 transitions.
[2021-10-28 09:05:15,411 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 105 transitions, 258 flow
[2021-10-28 09:05:15,413 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 105 transitions, 258 flow, removed 0 selfloop flow, removed 0 redundant places.
[2021-10-28 09:05:15,419 INFO  L242             Difference]: Finished difference. Result has 109 places, 101 transitions, 230 flow
[2021-10-28 09:05:15,420 INFO  L317   CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=230, PETRI_PLACES=109, PETRI_TRANSITIONS=101}
[2021-10-28 09:05:15,420 INFO  L334   CegarLoopForPetriNet]: 108 programPoint places, 1 predicate places.
[2021-10-28 09:05:15,421 INFO  L470      AbstractCegarLoop]: Abstraction has has 109 places, 101 transitions, 230 flow
[2021-10-28 09:05:15,421 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 98.0) internal successors, (588), 6 states have internal predecessors, (588), 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)
[2021-10-28 09:05:15,422 INFO  L246   CegarLoopForPetriNet]: Found error trace
[2021-10-28 09:05:15,422 INFO  L254   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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 09:05:15,423 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-10-28 09:05:15,423 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] ===
[2021-10-28 09:05:15,427 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 09:05:15,427 INFO  L85        PathProgramCache]: Analyzing trace with hash 435482140, now seen corresponding path program 1 times
[2021-10-28 09:05:15,427 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 09:05:15,427 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075006376]
[2021-10-28 09:05:15,428 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 09:05:15,428 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 09:05:15,579 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 09:05:15,741 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 09:05:15,742 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 09:05:15,742 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075006376]
[2021-10-28 09:05:15,743 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075006376] provided 1 perfect and 0 imperfect interpolant sequences
[2021-10-28 09:05:15,744 INFO  L186   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-28 09:05:15,744 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2021-10-28 09:05:15,745 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223801802]
[2021-10-28 09:05:15,747 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-10-28 09:05:15,748 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 09:05:15,748 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-10-28 09:05:15,749 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30
[2021-10-28 09:05:15,753 INFO  L499   CegarLoopForPetriNet]: Number of universal loopers: 84 out of 122
[2021-10-28 09:05:15,754 INFO  L92    encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 101 transitions, 230 flow. Second operand  has 6 states, 6 states have (on average 88.16666666666667) internal successors, (529), 6 states have internal predecessors, (529), 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)
[2021-10-28 09:05:15,755 INFO  L101   encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2021-10-28 09:05:15,756 INFO  L102   encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 122
[2021-10-28 09:05:15,757 INFO  L74            FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2021-10-28 09:05:15,827 INFO  L129       PetriNetUnfolder]: 0/43 cut-off events.
[2021-10-28 09:05:15,828 INFO  L130       PetriNetUnfolder]: For 3/3 co-relation queries the response was YES.
[2021-10-28 09:05:15,828 INFO  L84            FinitePrefix]: Finished finitePrefix Result has 66 conditions, 43 events. 0/43 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/44 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. 
[2021-10-28 09:05:15,828 INFO  L132   encePairwiseOnDemand]: 117/122 looper letters, 0 selfloop transitions, 0 changer transitions 43/43 dead transitions.
[2021-10-28 09:05:15,829 INFO  L138   encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 43 transitions, 121 flow
[2021-10-28 09:05:15,830 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2021-10-28 09:05:15,831 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2021-10-28 09:05:15,833 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 517 transitions.
[2021-10-28 09:05:15,834 INFO  L544   CegarLoopForPetriNet]: DFA transition density 0.7062841530054644
[2021-10-28 09:05:15,842 INFO  L72            ComplementDD]: Start complementDD. Operand 6 states and 517 transitions.
[2021-10-28 09:05:15,842 INFO  L73         IsDeterministic]: Start isDeterministic. Operand 6 states and 517 transitions.
[2021-10-28 09:05:15,843 INFO  L80         IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2021-10-28 09:05:15,843 INFO  L117    ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 517 transitions.
[2021-10-28 09:05:15,846 INFO  L343    DoubleDeckerVisitor]: Before removal of dead ends  has 7 states, 6 states have (on average 86.16666666666667) internal successors, (517), 6 states have internal predecessors, (517), 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)
[2021-10-28 09:05:15,849 INFO  L131    ReachableStatesCopy]: Finished reachableStatesCopy Result  has 7 states, 7 states have (on average 122.0) internal successors, (854), 7 states have internal predecessors, (854), 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)
[2021-10-28 09:05:15,850 INFO  L81            ComplementDD]: Finished complementDD. Result  has 7 states, 7 states have (on average 122.0) internal successors, (854), 7 states have internal predecessors, (854), 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)
[2021-10-28 09:05:15,850 INFO  L186             Difference]: Start difference. First operand has 109 places, 101 transitions, 230 flow. Second operand 6 states and 517 transitions.
[2021-10-28 09:05:15,851 INFO  L82        GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 43 transitions, 121 flow
[2021-10-28 09:05:15,854 INFO  L88        GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 43 transitions, 111 flow, removed 0 selfloop flow, removed 5 redundant places.
[2021-10-28 09:05:15,855 INFO  L242             Difference]: Finished difference. Result has 52 places, 0 transitions, 0 flow
[2021-10-28 09:05:15,855 INFO  L317   CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=52, PETRI_TRANSITIONS=0}
[2021-10-28 09:05:15,855 INFO  L334   CegarLoopForPetriNet]: 108 programPoint places, -56 predicate places.
[2021-10-28 09:05:15,856 INFO  L470      AbstractCegarLoop]: Abstraction has has 52 places, 0 transitions, 0 flow
[2021-10-28 09:05:15,857 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 88.16666666666667) internal successors, (529), 6 states have internal predecessors, (529), 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)
[2021-10-28 09:05:15,860 INFO  L764   garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION
[2021-10-28 09:05:15,860 INFO  L764   garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION
[2021-10-28 09:05:15,861 INFO  L764   garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION
[2021-10-28 09:05:15,861 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-10-28 09:05:15,866 INFO  L731         BasicCegarLoop]: Path program histogram: [1, 1, 1]
[2021-10-28 09:05:15,869 INFO  L229   ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances
[2021-10-28 09:05:15,869 INFO  L179   ceAbstractionStarter]: Computing trace abstraction results
[2021-10-28 09:05:15,874 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:05:15 BasicIcfg
[2021-10-28 09:05:15,874 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-10-28 09:05:15,875 INFO  L113        PluginConnector]: ------------------------Witness Printer----------------------------
[2021-10-28 09:05:15,875 INFO  L271        PluginConnector]: Initializing Witness Printer...
[2021-10-28 09:05:15,876 INFO  L275        PluginConnector]: Witness Printer initialized
[2021-10-28 09:05:15,877 INFO  L185        PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:05:13" (3/4) ...
[2021-10-28 09:05:15,881 INFO  L137         WitnessPrinter]: Generating witness for correct program
[2021-10-28 09:05:15,888 INFO  L354     RCFGBacktranslator]: Ignoring RootEdge to procedure thread1
[2021-10-28 09:05:15,889 INFO  L354     RCFGBacktranslator]: Ignoring RootEdge to procedure thread2
[2021-10-28 09:05:15,899 INFO  L910   BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges
[2021-10-28 09:05:15,900 INFO  L910   BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges
[2021-10-28 09:05:15,900 INFO  L910   BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2021-10-28 09:05:15,901 INFO  L910   BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2021-10-28 09:05:16,005 INFO  L141         WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9279ae6f-24bb-4da9-b428-9c8d5e3372d4/bin/uautomizer-UnR33cPsHg/witness.graphml
[2021-10-28 09:05:16,006 INFO  L132        PluginConnector]: ------------------------ END Witness Printer----------------------------
[2021-10-28 09:05:16,008 INFO  L168              Benchmark]: Toolchain (without parser) took 3545.37 ms. Allocated memory was 90.2 MB in the beginning and 123.7 MB in the end (delta: 33.6 MB). Free memory was 56.3 MB in the beginning and 67.2 MB in the end (delta: -11.0 MB). Peak memory consumption was 22.7 MB. Max. memory is 16.1 GB.
[2021-10-28 09:05:16,009 INFO  L168              Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 90.2 MB. Free memory is still 47.0 MB. There was no memory consumed. Max. memory is 16.1 GB.
[2021-10-28 09:05:16,010 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 408.83 ms. Allocated memory was 90.2 MB in the beginning and 123.7 MB in the end (delta: 33.6 MB). Free memory was 56.1 MB in the beginning and 97.9 MB in the end (delta: -41.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB.
[2021-10-28 09:05:16,011 INFO  L168              Benchmark]: Boogie Procedure Inliner took 57.26 ms. Allocated memory is still 123.7 MB. Free memory was 97.4 MB in the beginning and 95.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
[2021-10-28 09:05:16,011 INFO  L168              Benchmark]: Boogie Preprocessor took 36.67 ms. Allocated memory is still 123.7 MB. Free memory was 95.8 MB in the beginning and 94.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
[2021-10-28 09:05:16,012 INFO  L168              Benchmark]: RCFGBuilder took 998.60 ms. Allocated memory is still 123.7 MB. Free memory was 94.1 MB in the beginning and 72.7 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB.
[2021-10-28 09:05:16,012 INFO  L168              Benchmark]: TraceAbstraction took 1901.40 ms. Allocated memory is still 123.7 MB. Free memory was 72.2 MB in the beginning and 70.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB.
[2021-10-28 09:05:16,013 INFO  L168              Benchmark]: Witness Printer took 131.24 ms. Allocated memory is still 123.7 MB. Free memory was 70.1 MB in the beginning and 67.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
[2021-10-28 09:05:16,015 INFO  L339   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.40 ms. Allocated memory is still 90.2 MB. Free memory is still 47.0 MB. There was no memory consumed. Max. memory is 16.1 GB.
 * CACSL2BoogieTranslator took 408.83 ms. Allocated memory was 90.2 MB in the beginning and 123.7 MB in the end (delta: 33.6 MB). Free memory was 56.1 MB in the beginning and 97.9 MB in the end (delta: -41.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB.
 * Boogie Procedure Inliner took 57.26 ms. Allocated memory is still 123.7 MB. Free memory was 97.4 MB in the beginning and 95.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
 * Boogie Preprocessor took 36.67 ms. Allocated memory is still 123.7 MB. Free memory was 95.8 MB in the beginning and 94.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
 * RCFGBuilder took 998.60 ms. Allocated memory is still 123.7 MB. Free memory was 94.1 MB in the beginning and 72.7 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB.
 * TraceAbstraction took 1901.40 ms. Allocated memory is still 123.7 MB. Free memory was 72.2 MB in the beginning and 70.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB.
 * Witness Printer took 131.24 ms. Allocated memory is still 123.7 MB. Free memory was 70.1 MB in the beginning and 67.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: ErrorAutomatonStatistics
    NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
  - PositiveResult [Line: 98]: call to reach_error is unreachable
    For all program executions holds that call to reach_error is unreachable at this location
  - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances
    CFG has 5 procedures, 132 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 39 SDslu, 6 SDs, 0 SdLazy, 65 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=236occurred in iteration=0, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 265 NumberOfCodeBlocks, 265 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 262 ConstructedInterpolants, 0 QuantifiedInterpolants, 386 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
  - AllSpecificationsHoldResult: All specifications hold
    1 specifications checked. All of them hold
RESULT: Ultimate proved your program to be correct!
[2021-10-28 09:05:16,078 INFO  L540       MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9279ae6f-24bb-4da9-b428-9c8d5e3372d4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...