./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-deagle/floating_read-5.i --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for ERROR reachability
Using default analysis
Version 63182f13
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-deagle/floating_read-5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y --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 2f28efd84e1dbcbcea7683bca483f8f3b9fbdd333eb36f517b9f12d5bccb885d
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-63182f1
[2021-11-13 18:36:10,919 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-11-13 18:36:10,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-11-13 18:36:11,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-11-13 18:36:11,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-11-13 18:36:11,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-11-13 18:36:11,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-11-13 18:36:11,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-11-13 18:36:11,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-11-13 18:36:11,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-11-13 18:36:11,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-11-13 18:36:11,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-11-13 18:36:11,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-11-13 18:36:11,048 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-11-13 18:36:11,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-11-13 18:36:11,058 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-11-13 18:36:11,061 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-11-13 18:36:11,062 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-11-13 18:36:11,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-11-13 18:36:11,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-11-13 18:36:11,083 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-11-13 18:36:11,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-11-13 18:36:11,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-11-13 18:36:11,092 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-11-13 18:36:11,097 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-11-13 18:36:11,098 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-11-13 18:36:11,098 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-11-13 18:36:11,101 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-11-13 18:36:11,102 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-11-13 18:36:11,104 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-11-13 18:36:11,105 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-11-13 18:36:11,107 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-11-13 18:36:11,110 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-11-13 18:36:11,111 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-11-13 18:36:11,114 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-11-13 18:36:11,114 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-11-13 18:36:11,115 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-11-13 18:36:11,116 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-11-13 18:36:11,116 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-11-13 18:36:11,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-11-13 18:36:11,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-11-13 18:36:11,120 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf
[2021-11-13 18:36:11,181 INFO L113 SettingsManager]: Loading preferences was successful
[2021-11-13 18:36:11,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-11-13 18:36:11,183 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-11-13 18:36:11,183 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-11-13 18:36:11,186 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-11-13 18:36:11,186 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-11-13 18:36:11,187 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-11-13 18:36:11,188 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-11-13 18:36:11,188 INFO L138 SettingsManager]: * Use SBE=true
[2021-11-13 18:36:11,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-11-13 18:36:11,190 INFO L138 SettingsManager]: * sizeof long=4
[2021-11-13 18:36:11,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-11-13 18:36:11,191 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-11-13 18:36:11,191 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-11-13 18:36:11,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2021-11-13 18:36:11,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-11-13 18:36:11,192 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2021-11-13 18:36:11,192 INFO L138 SettingsManager]: * sizeof long double=12
[2021-11-13 18:36:11,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2021-11-13 18:36:11,193 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-11-13 18:36:11,193 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2021-11-13 18:36:11,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-11-13 18:36:11,194 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-11-13 18:36:11,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-11-13 18:36:11,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 18:36:11,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-11-13 18:36:11,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-11-13 18:36:11,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-11-13 18:36:11,196 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-11-13 18:36:11,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-11-13 18:36:11,198 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF
[2021-11-13 18:36:11,199 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2021-11-13 18:36:11,199 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-11-13 18:36:11,199 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-11-13 18:36:11,200 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_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f28efd84e1dbcbcea7683bca483f8f3b9fbdd333eb36f517b9f12d5bccb885d
[2021-11-13 18:36:11,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-11-13 18:36:11,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-11-13 18:36:11,647 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-11-13 18:36:11,649 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-11-13 18:36:11,650 INFO L275 PluginConnector]: CDTParser initialized
[2021-11-13 18:36:11,652 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/pthread-deagle/floating_read-5.i
[2021-11-13 18:36:11,753 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/data/9fae2f6da/e9cfc68c21254808a03fbb51a022e7f3/FLAG3aa6d000a
[2021-11-13 18:36:12,648 INFO L306 CDTParser]: Found 1 translation units.
[2021-11-13 18:36:12,650 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/sv-benchmarks/c/pthread-deagle/floating_read-5.i
[2021-11-13 18:36:12,683 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/data/9fae2f6da/e9cfc68c21254808a03fbb51a022e7f3/FLAG3aa6d000a
[2021-11-13 18:36:12,838 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/data/9fae2f6da/e9cfc68c21254808a03fbb51a022e7f3
[2021-11-13 18:36:12,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-11-13 18:36:12,846 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2021-11-13 18:36:12,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-11-13 18:36:12,853 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-11-13 18:36:12,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-11-13 18:36:12,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:36:12" (1/1) ...
[2021-11-13 18:36:12,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c6963dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:36:12, skipping insertion in model container
[2021-11-13 18:36:12,886 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:36:12" (1/1) ...
[2021-11-13 18:36:12,897 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-11-13 18:36:12,983 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-11-13 18:36:13,573 WARN L1529 CHandler]: Possible shadowing of function thread
[2021-11-13 18:36:13,590 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_f64c2949-2757-44c7-8f60-565194df1561/sv-benchmarks/c/pthread-deagle/floating_read-5.i[31193,31206]
[2021-11-13 18:36:13,603 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 18:36:13,615 INFO L203 MainTranslator]: Completed pre-run
[2021-11-13 18:36:13,703 WARN L1529 CHandler]: Possible shadowing of function thread
[2021-11-13 18:36:13,708 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_f64c2949-2757-44c7-8f60-565194df1561/sv-benchmarks/c/pthread-deagle/floating_read-5.i[31193,31206]
[2021-11-13 18:36:13,711 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 18:36:13,766 INFO L208 MainTranslator]: Completed translation
[2021-11-13 18:36:13,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:36:13 WrapperNode
[2021-11-13 18:36:13,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-11-13 18:36:13,770 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-11-13 18:36:13,770 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-11-13 18:36:13,770 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2021-11-13 18:36:13,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:36:13" (1/1) ...
[2021-11-13 18:36:13,823 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:36:13" (1/1) ...
[2021-11-13 18:36:13,858 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-11-13 18:36:13,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-11-13 18:36:13,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-11-13 18:36:13,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-11-13 18:36:13,873 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:36:13" (1/1) ...
[2021-11-13 18:36:13,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:36:13" (1/1) ...
[2021-11-13 18:36:13,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:36:13" (1/1) ...
[2021-11-13 18:36:13,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:36:13" (1/1) ...
[2021-11-13 18:36:13,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:36:13" (1/1) ...
[2021-11-13 18:36:13,895 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:36:13" (1/1) ...
[2021-11-13 18:36:13,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:36:13" (1/1) ...
[2021-11-13 18:36:13,903 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-11-13 18:36:13,904 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-11-13 18:36:13,905 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-11-13 18:36:13,905 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-11-13 18:36:13,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:36:13" (1/1) ...
[2021-11-13 18:36:13,930 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 18:36:13,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:36:13,977 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-11-13 18:36:14,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-11-13 18:36:14,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-11-13 18:36:14,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-11-13 18:36:14,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin
[2021-11-13 18:36:14,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-11-13 18:36:14,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-11-13 18:36:14,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2021-11-13 18:36:14,067 INFO L130 BoogieDeclarations]: Found specification of procedure thread
[2021-11-13 18:36:14,068 INFO L138 BoogieDeclarations]: Found implementation of procedure thread
[2021-11-13 18:36:14,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end
[2021-11-13 18:36:14,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-11-13 18:36:14,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-11-13 18:36:14,076 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement
[2021-11-13 18:36:14,727 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-11-13 18:36:14,728 INFO L299 CfgBuilder]: Removed 2 assume(true) statements.
[2021-11-13 18:36:14,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:36:14 BoogieIcfgContainer
[2021-11-13 18:36:14,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-11-13 18:36:14,739 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-11-13 18:36:14,739 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-11-13 18:36:14,744 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-11-13 18:36:14,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:36:12" (1/3) ...
[2021-11-13 18:36:14,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33a650ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:36:14, skipping insertion in model container
[2021-11-13 18:36:14,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:36:13" (2/3) ...
[2021-11-13 18:36:14,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33a650ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:36:14, skipping insertion in model container
[2021-11-13 18:36:14,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:36:14" (3/3) ...
[2021-11-13 18:36:14,749 INFO L111 eAbstractionObserver]: Analyzing ICFG floating_read-5.i
[2021-11-13 18:36:14,756 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2021-11-13 18:36:14,757 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-11-13 18:36:14,757 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-11-13 18:36:14,758 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2021-11-13 18:36:14,798 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:14,798 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:14,799 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:14,799 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:14,800 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:14,800 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:14,800 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:14,801 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:14,801 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:14,802 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:14,802 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:14,803 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:14,803 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:14,804 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:14,804 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:14,805 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:14,805 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:14,806 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:14,806 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:14,806 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:14,812 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:14,813 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:14,813 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:14,814 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:14,814 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:14,821 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions.
[2021-11-13 18:36:14,905 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-11-13 18:36:14,917 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
[2021-11-13 18:36:14,917 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2021-11-13 18:36:14,935 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 58 places, 59 transitions, 126 flow
[2021-11-13 18:36:14,994 INFO L129 PetriNetUnfolder]: 7/81 cut-off events.
[2021-11-13 18:36:14,994 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES.
[2021-11-13 18:36:14,999 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 81 events. 7/81 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 104 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 42. Up to 4 conditions per place.
[2021-11-13 18:36:14,999 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 59 transitions, 126 flow
[2021-11-13 18:36:15,005 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 40 transitions, 85 flow
[2021-11-13 18:36:15,016 INFO L129 PetriNetUnfolder]: 1/25 cut-off events.
[2021-11-13 18:36:15,017 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES.
[2021-11-13 18:36:15,017 INFO L246 CegarLoopForPetriNet]: Found error trace
[2021-11-13 18:36:15,019 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]
[2021-11-13 18:36:15,019 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] ===
[2021-11-13 18:36:15,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:36:15,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1781753840, now seen corresponding path program 1 times
[2021-11-13 18:36:15,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:36:15,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617054154]
[2021-11-13 18:36:15,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:36:15,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:36:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:36:15,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:36:15,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:36:15,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617054154]
[2021-11-13 18:36:15,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617054154] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:36:15,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:36:15,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-11-13 18:36:15,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239474578]
[2021-11-13 18:36:15,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:36:15,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2021-11-13 18:36:15,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:36:15,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2021-11-13 18:36:15,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-11-13 18:36:15,378 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 59
[2021-11-13 18:36:15,384 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 85 flow. Second operand has 2 states, 2 states have (on average 53.5) internal successors, (107), 2 states have internal predecessors, (107), 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)
[2021-11-13 18:36:15,384 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2021-11-13 18:36:15,384 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 59
[2021-11-13 18:36:15,387 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2021-11-13 18:36:15,420 INFO L129 PetriNetUnfolder]: 0/46 cut-off events.
[2021-11-13 18:36:15,421 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES.
[2021-11-13 18:36:15,421 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 46 events. 0/46 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 19 event pairs, 0 based on Foata normal form. 2/46 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place.
[2021-11-13 18:36:15,423 INFO L132 encePairwiseOnDemand]: 58/59 looper letters, 1 selfloop transitions, 0 changer transitions 0/39 dead transitions.
[2021-11-13 18:36:15,424 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 39 transitions, 85 flow
[2021-11-13 18:36:15,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2021-11-13 18:36:15,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states.
[2021-11-13 18:36:15,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 108 transitions.
[2021-11-13 18:36:15,445 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9152542372881356
[2021-11-13 18:36:15,446 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 108 transitions.
[2021-11-13 18:36:15,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 108 transitions.
[2021-11-13 18:36:15,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2021-11-13 18:36:15,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 108 transitions.
[2021-11-13 18:36:15,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 54.0) internal successors, (108), 2 states have internal predecessors, (108), 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)
[2021-11-13 18:36:15,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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)
[2021-11-13 18:36:15,524 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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)
[2021-11-13 18:36:15,527 INFO L186 Difference]: Start difference. First operand has 42 places, 40 transitions, 85 flow. Second operand 2 states and 108 transitions.
[2021-11-13 18:36:15,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 39 transitions, 85 flow
[2021-11-13 18:36:15,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 39 transitions, 85 flow, removed 0 selfloop flow, removed 0 redundant places.
[2021-11-13 18:36:15,537 INFO L242 Difference]: Finished difference. Result has 43 places, 39 transitions, 83 flow
[2021-11-13 18:36:15,554 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=83, PETRI_PLACES=43, PETRI_TRANSITIONS=39}
[2021-11-13 18:36:15,560 INFO L334 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places.
[2021-11-13 18:36:15,560 INFO L470 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 83 flow
[2021-11-13 18:36:15,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 53.5) internal successors, (107), 2 states have internal predecessors, (107), 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)
[2021-11-13 18:36:15,561 INFO L246 CegarLoopForPetriNet]: Found error trace
[2021-11-13 18:36:15,562 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]
[2021-11-13 18:36:15,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-11-13 18:36:15,563 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] ===
[2021-11-13 18:36:15,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:36:15,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1781754801, now seen corresponding path program 1 times
[2021-11-13 18:36:15,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:36:15,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947367660]
[2021-11-13 18:36:15,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:36:15,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:36:15,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:36:15,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:36:15,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:36:15,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947367660]
[2021-11-13 18:36:15,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947367660] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:36:15,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:36:15,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-13 18:36:15,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354648117]
[2021-11-13 18:36:15,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:36:15,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-13 18:36:15,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:36:15,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-13 18:36:15,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-13 18:36:15,787 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 59
[2021-11-13 18:36:15,791 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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)
[2021-11-13 18:36:15,792 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2021-11-13 18:36:15,792 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 59
[2021-11-13 18:36:15,792 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2021-11-13 18:36:15,844 INFO L129 PetriNetUnfolder]: 0/43 cut-off events.
[2021-11-13 18:36:15,844 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES.
[2021-11-13 18:36:15,845 INFO L84 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 43 events. 0/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 15 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place.
[2021-11-13 18:36:15,847 INFO L132 encePairwiseOnDemand]: 56/59 looper letters, 8 selfloop transitions, 2 changer transitions 0/41 dead transitions.
[2021-11-13 18:36:15,847 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 41 transitions, 107 flow
[2021-11-13 18:36:15,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-11-13 18:36:15,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2021-11-13 18:36:15,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions.
[2021-11-13 18:36:15,853 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8418079096045198
[2021-11-13 18:36:15,854 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 149 transitions.
[2021-11-13 18:36:15,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 149 transitions.
[2021-11-13 18:36:15,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2021-11-13 18:36:15,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 149 transitions.
[2021-11-13 18:36:15,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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)
[2021-11-13 18:36:15,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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)
[2021-11-13 18:36:15,867 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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)
[2021-11-13 18:36:15,868 INFO L186 Difference]: Start difference. First operand has 43 places, 39 transitions, 83 flow. Second operand 3 states and 149 transitions.
[2021-11-13 18:36:15,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 41 transitions, 107 flow
[2021-11-13 18:36:15,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 41 transitions, 107 flow, removed 0 selfloop flow, removed 0 redundant places.
[2021-11-13 18:36:15,877 INFO L242 Difference]: Finished difference. Result has 46 places, 39 transitions, 91 flow
[2021-11-13 18:36:15,879 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=46, PETRI_TRANSITIONS=39}
[2021-11-13 18:36:15,881 INFO L334 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places.
[2021-11-13 18:36:15,881 INFO L470 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 91 flow
[2021-11-13 18:36:15,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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)
[2021-11-13 18:36:15,882 INFO L246 CegarLoopForPetriNet]: Found error trace
[2021-11-13 18:36:15,882 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]
[2021-11-13 18:36:15,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-11-13 18:36:15,883 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] ===
[2021-11-13 18:36:15,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:36:15,885 INFO L85 PathProgramCache]: Analyzing trace with hash -315270955, now seen corresponding path program 1 times
[2021-11-13 18:36:15,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:36:15,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565087911]
[2021-11-13 18:36:15,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:36:15,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:36:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:36:16,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-11-13 18:36:16,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:36:16,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565087911]
[2021-11-13 18:36:16,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565087911] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:36:16,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:36:16,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-13 18:36:16,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483413971]
[2021-11-13 18:36:16,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:36:16,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-13 18:36:16,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:36:16,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-13 18:36:16,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-13 18:36:16,092 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 59
[2021-11-13 18:36:16,093 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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)
[2021-11-13 18:36:16,093 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2021-11-13 18:36:16,094 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 59
[2021-11-13 18:36:16,094 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2021-11-13 18:36:16,163 INFO L129 PetriNetUnfolder]: 0/43 cut-off events.
[2021-11-13 18:36:16,164 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES.
[2021-11-13 18:36:16,164 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 43 events. 0/43 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 15 event pairs, 0 based on Foata normal form. 1/44 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place.
[2021-11-13 18:36:16,165 INFO L132 encePairwiseOnDemand]: 56/59 looper letters, 3 selfloop transitions, 2 changer transitions 0/39 dead transitions.
[2021-11-13 18:36:16,165 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 39 transitions, 101 flow
[2021-11-13 18:36:16,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-11-13 18:36:16,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2021-11-13 18:36:16,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions.
[2021-11-13 18:36:16,178 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.847457627118644
[2021-11-13 18:36:16,180 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 150 transitions.
[2021-11-13 18:36:16,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 150 transitions.
[2021-11-13 18:36:16,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2021-11-13 18:36:16,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 150 transitions.
[2021-11-13 18:36:16,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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)
[2021-11-13 18:36:16,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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)
[2021-11-13 18:36:16,191 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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)
[2021-11-13 18:36:16,192 INFO L186 Difference]: Start difference. First operand has 46 places, 39 transitions, 91 flow. Second operand 3 states and 150 transitions.
[2021-11-13 18:36:16,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 39 transitions, 101 flow
[2021-11-13 18:36:16,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 39 transitions, 97 flow, removed 0 selfloop flow, removed 2 redundant places.
[2021-11-13 18:36:16,200 INFO L242 Difference]: Finished difference. Result has 47 places, 39 transitions, 95 flow
[2021-11-13 18:36:16,200 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=47, PETRI_TRANSITIONS=39}
[2021-11-13 18:36:16,204 INFO L334 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places.
[2021-11-13 18:36:16,205 INFO L470 AbstractCegarLoop]: Abstraction has has 47 places, 39 transitions, 95 flow
[2021-11-13 18:36:16,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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)
[2021-11-13 18:36:16,205 INFO L246 CegarLoopForPetriNet]: Found error trace
[2021-11-13 18:36:16,206 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:36:16,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-11-13 18:36:16,207 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] ===
[2021-11-13 18:36:16,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:36:16,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1968634815, now seen corresponding path program 1 times
[2021-11-13 18:36:16,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:36:16,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928927392]
[2021-11-13 18:36:16,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:36:16,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:36:16,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-11-13 18:36:16,279 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-11-13 18:36:16,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-11-13 18:36:16,391 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2021-11-13 18:36:16,391 INFO L628 BasicCegarLoop]: Counterexample is feasible
[2021-11-13 18:36:16,393 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 2 remaining)
[2021-11-13 18:36:16,396 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining)
[2021-11-13 18:36:16,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-11-13 18:36:16,402 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1]
[2021-11-13 18:36:16,406 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis
[2021-11-13 18:36:16,406 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances.
[2021-11-13 18:36:16,431 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,435 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,435 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,436 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,437 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,437 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,439 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,439 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,439 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,440 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,446 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,448 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,448 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,449 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,450 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,451 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,451 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,451 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,452 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,453 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,453 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,454 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,454 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,454 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,454 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,455 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,455 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,455 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,455 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,456 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,456 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,456 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,456 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,457 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,457 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,457 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,458 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,458 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,458 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,458 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,459 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,460 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,460 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,460 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,461 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,462 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,462 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,462 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,463 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,463 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:16,466 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions.
[2021-11-13 18:36:16,477 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-11-13 18:36:16,480 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
[2021-11-13 18:36:16,481 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2021-11-13 18:36:16,486 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 66 transitions, 150 flow
[2021-11-13 18:36:16,545 INFO L129 PetriNetUnfolder]: 13/135 cut-off events.
[2021-11-13 18:36:16,546 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES.
[2021-11-13 18:36:16,550 INFO L84 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 135 events. 13/135 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 236 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 83. Up to 8 conditions per place.
[2021-11-13 18:36:16,551 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 66 transitions, 150 flow
[2021-11-13 18:36:16,553 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 46 transitions, 104 flow
[2021-11-13 18:36:16,563 INFO L129 PetriNetUnfolder]: 1/26 cut-off events.
[2021-11-13 18:36:16,570 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES.
[2021-11-13 18:36:16,571 INFO L246 CegarLoopForPetriNet]: Found error trace
[2021-11-13 18:36:16,571 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]
[2021-11-13 18:36:16,572 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] ===
[2021-11-13 18:36:16,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:36:16,573 INFO L85 PathProgramCache]: Analyzing trace with hash 775346483, now seen corresponding path program 1 times
[2021-11-13 18:36:16,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:36:16,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673926990]
[2021-11-13 18:36:16,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:36:16,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:36:16,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:36:16,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:36:16,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:36:16,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673926990]
[2021-11-13 18:36:16,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673926990] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:36:16,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:36:16,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-13 18:36:16,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403309228]
[2021-11-13 18:36:16,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:36:16,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-13 18:36:16,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:36:16,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-13 18:36:16,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-13 18:36:16,664 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 66
[2021-11-13 18:36:16,665 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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)
[2021-11-13 18:36:16,665 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2021-11-13 18:36:16,666 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 66
[2021-11-13 18:36:16,666 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2021-11-13 18:36:16,727 INFO L129 PetriNetUnfolder]: 0/61 cut-off events.
[2021-11-13 18:36:16,728 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES.
[2021-11-13 18:36:16,729 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 61 events. 0/61 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 0. Up to 12 conditions per place.
[2021-11-13 18:36:16,730 INFO L132 encePairwiseOnDemand]: 62/66 looper letters, 11 selfloop transitions, 2 changer transitions 0/49 dead transitions.
[2021-11-13 18:36:16,730 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 49 transitions, 136 flow
[2021-11-13 18:36:16,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-11-13 18:36:16,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2021-11-13 18:36:16,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions.
[2021-11-13 18:36:16,735 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8535353535353535
[2021-11-13 18:36:16,735 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 169 transitions.
[2021-11-13 18:36:16,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 169 transitions.
[2021-11-13 18:36:16,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2021-11-13 18:36:16,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 169 transitions.
[2021-11-13 18:36:16,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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)
[2021-11-13 18:36:16,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 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)
[2021-11-13 18:36:16,740 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 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)
[2021-11-13 18:36:16,740 INFO L186 Difference]: Start difference. First operand has 50 places, 46 transitions, 104 flow. Second operand 3 states and 169 transitions.
[2021-11-13 18:36:16,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 49 transitions, 136 flow
[2021-11-13 18:36:16,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 49 transitions, 134 flow, removed 1 selfloop flow, removed 0 redundant places.
[2021-11-13 18:36:16,747 INFO L242 Difference]: Finished difference. Result has 53 places, 46 transitions, 112 flow
[2021-11-13 18:36:16,747 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=53, PETRI_TRANSITIONS=46}
[2021-11-13 18:36:16,749 INFO L334 CegarLoopForPetriNet]: 50 programPoint places, 3 predicate places.
[2021-11-13 18:36:16,750 INFO L470 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 112 flow
[2021-11-13 18:36:16,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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)
[2021-11-13 18:36:16,751 INFO L246 CegarLoopForPetriNet]: Found error trace
[2021-11-13 18:36:16,751 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]
[2021-11-13 18:36:16,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2021-11-13 18:36:16,752 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] ===
[2021-11-13 18:36:16,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:36:16,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1083506660, now seen corresponding path program 1 times
[2021-11-13 18:36:16,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:36:16,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568414553]
[2021-11-13 18:36:16,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:36:16,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:36:16,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:36:16,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-11-13 18:36:16,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:36:16,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568414553]
[2021-11-13 18:36:16,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568414553] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:36:16,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:36:16,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-13 18:36:16,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036056298]
[2021-11-13 18:36:16,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:36:16,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-13 18:36:16,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:36:16,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-13 18:36:16,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-13 18:36:16,869 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 66
[2021-11-13 18:36:16,870 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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)
[2021-11-13 18:36:16,873 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2021-11-13 18:36:16,873 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 66
[2021-11-13 18:36:16,874 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2021-11-13 18:36:16,976 INFO L129 PetriNetUnfolder]: 4/87 cut-off events.
[2021-11-13 18:36:16,976 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES.
[2021-11-13 18:36:16,977 INFO L84 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 87 events. 4/87 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 146 event pairs, 1 based on Foata normal form. 2/88 useless extension candidates. Maximal degree in co-relation 84. Up to 13 conditions per place.
[2021-11-13 18:36:16,978 INFO L132 encePairwiseOnDemand]: 62/66 looper letters, 7 selfloop transitions, 3 changer transitions 0/49 dead transitions.
[2021-11-13 18:36:16,978 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 49 transitions, 143 flow
[2021-11-13 18:36:16,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-11-13 18:36:16,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2021-11-13 18:36:16,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 167 transitions.
[2021-11-13 18:36:16,982 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8434343434343434
[2021-11-13 18:36:16,982 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 167 transitions.
[2021-11-13 18:36:16,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 167 transitions.
[2021-11-13 18:36:16,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2021-11-13 18:36:16,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 167 transitions.
[2021-11-13 18:36:16,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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)
[2021-11-13 18:36:16,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 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)
[2021-11-13 18:36:16,987 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 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)
[2021-11-13 18:36:16,987 INFO L186 Difference]: Start difference. First operand has 53 places, 46 transitions, 112 flow. Second operand 3 states and 167 transitions.
[2021-11-13 18:36:16,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 49 transitions, 143 flow
[2021-11-13 18:36:16,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 49 transitions, 141 flow, removed 0 selfloop flow, removed 1 redundant places.
[2021-11-13 18:36:16,991 INFO L242 Difference]: Finished difference. Result has 55 places, 48 transitions, 129 flow
[2021-11-13 18:36:16,992 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=55, PETRI_TRANSITIONS=48}
[2021-11-13 18:36:16,993 INFO L334 CegarLoopForPetriNet]: 50 programPoint places, 5 predicate places.
[2021-11-13 18:36:16,994 INFO L470 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 129 flow
[2021-11-13 18:36:16,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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)
[2021-11-13 18:36:16,995 INFO L246 CegarLoopForPetriNet]: Found error trace
[2021-11-13 18:36:16,995 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]
[2021-11-13 18:36:16,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2021-11-13 18:36:16,996 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] ===
[2021-11-13 18:36:16,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:36:16,997 INFO L85 PathProgramCache]: Analyzing trace with hash -2017126046, now seen corresponding path program 1 times
[2021-11-13 18:36:16,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:36:16,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37799619]
[2021-11-13 18:36:16,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:36:16,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:36:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:36:17,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:36:17,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:36:17,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37799619]
[2021-11-13 18:36:17,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37799619] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 18:36:17,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736753924]
[2021-11-13 18:36:17,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:36:17,074 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:36:17,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:36:17,076 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:36:17,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2021-11-13 18:36:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:36:17,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core
[2021-11-13 18:36:17,188 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:36:17,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:36:17,438 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:36:17,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:36:17,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736753924] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:36:17,626 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-11-13 18:36:17,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10
[2021-11-13 18:36:17,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656586207]
[2021-11-13 18:36:17,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:36:17,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2021-11-13 18:36:17,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:36:17,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-11-13 18:36:17,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90
[2021-11-13 18:36:17,633 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 66
[2021-11-13 18:36:17,635 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 129 flow. Second operand has 10 states, 10 states have (on average 52.3) internal successors, (523), 10 states have internal predecessors, (523), 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)
[2021-11-13 18:36:17,636 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2021-11-13 18:36:17,636 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 66
[2021-11-13 18:36:17,636 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2021-11-13 18:36:17,759 INFO L129 PetriNetUnfolder]: 1/59 cut-off events.
[2021-11-13 18:36:17,759 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES.
[2021-11-13 18:36:17,760 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 59 events. 1/59 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 2/61 useless extension candidates. Maximal degree in co-relation 37. Up to 5 conditions per place.
[2021-11-13 18:36:17,761 INFO L132 encePairwiseOnDemand]: 61/66 looper letters, 9 selfloop transitions, 7 changer transitions 0/51 dead transitions.
[2021-11-13 18:36:17,761 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 51 transitions, 163 flow
[2021-11-13 18:36:17,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2021-11-13 18:36:17,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states.
[2021-11-13 18:36:17,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 468 transitions.
[2021-11-13 18:36:17,765 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7878787878787878
[2021-11-13 18:36:17,766 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 468 transitions.
[2021-11-13 18:36:17,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 468 transitions.
[2021-11-13 18:36:17,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2021-11-13 18:36:17,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 468 transitions.
[2021-11-13 18:36:17,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 52.0) internal successors, (468), 9 states have internal predecessors, (468), 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)
[2021-11-13 18:36:17,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 66.0) internal successors, (660), 10 states have internal predecessors, (660), 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)
[2021-11-13 18:36:17,777 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 66.0) internal successors, (660), 10 states have internal predecessors, (660), 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)
[2021-11-13 18:36:17,778 INFO L186 Difference]: Start difference. First operand has 55 places, 48 transitions, 129 flow. Second operand 9 states and 468 transitions.
[2021-11-13 18:36:17,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 51 transitions, 163 flow
[2021-11-13 18:36:17,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 51 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places.
[2021-11-13 18:36:17,786 INFO L242 Difference]: Finished difference. Result has 59 places, 47 transitions, 134 flow
[2021-11-13 18:36:17,787 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=134, PETRI_PLACES=59, PETRI_TRANSITIONS=47}
[2021-11-13 18:36:17,789 INFO L334 CegarLoopForPetriNet]: 50 programPoint places, 9 predicate places.
[2021-11-13 18:36:17,790 INFO L470 AbstractCegarLoop]: Abstraction has has 59 places, 47 transitions, 134 flow
[2021-11-13 18:36:17,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 52.3) internal successors, (523), 10 states have internal predecessors, (523), 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)
[2021-11-13 18:36:17,791 INFO L246 CegarLoopForPetriNet]: Found error trace
[2021-11-13 18:36:17,791 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:36:17,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2021-11-13 18:36:18,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:36:18,006 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] ===
[2021-11-13 18:36:18,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:36:18,007 INFO L85 PathProgramCache]: Analyzing trace with hash 286308789, now seen corresponding path program 1 times
[2021-11-13 18:36:18,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:36:18,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605779637]
[2021-11-13 18:36:18,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:36:18,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:36:18,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-11-13 18:36:18,034 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-11-13 18:36:18,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-11-13 18:36:18,068 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2021-11-13 18:36:18,068 INFO L628 BasicCegarLoop]: Counterexample is feasible
[2021-11-13 18:36:18,068 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 2 remaining)
[2021-11-13 18:36:18,069 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining)
[2021-11-13 18:36:18,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2021-11-13 18:36:18,070 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1]
[2021-11-13 18:36:18,071 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis
[2021-11-13 18:36:18,071 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances.
[2021-11-13 18:36:18,086 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,086 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,087 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,088 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,088 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,088 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,088 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,089 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,089 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,089 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,090 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,090 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,090 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,090 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,091 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,091 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,091 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,091 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,092 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,092 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,092 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,093 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,093 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,093 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,093 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,093 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,094 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,094 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,094 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,094 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,095 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,095 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,095 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,095 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,096 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,096 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,096 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,096 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,097 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,106 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,106 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,107 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,107 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,107 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,108 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,112 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,112 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,112 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,113 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,113 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,113 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,114 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,114 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,114 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,114 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,115 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,115 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,115 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,116 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,116 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,117 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,122 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,122 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,123 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,123 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,124 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,124 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,125 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,125 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,125 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,126 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,127 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,127 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,130 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,131 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:18,133 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions.
[2021-11-13 18:36:18,135 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-11-13 18:36:18,138 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
[2021-11-13 18:36:18,144 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2021-11-13 18:36:18,146 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 74 places, 73 transitions, 176 flow
[2021-11-13 18:36:18,203 INFO L129 PetriNetUnfolder]: 24/222 cut-off events.
[2021-11-13 18:36:18,203 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES.
[2021-11-13 18:36:18,204 INFO L84 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 222 events. 24/222 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 498 event pairs, 1 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 143. Up to 16 conditions per place.
[2021-11-13 18:36:18,205 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 73 transitions, 176 flow
[2021-11-13 18:36:18,207 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 52 transitions, 125 flow
[2021-11-13 18:36:18,211 INFO L129 PetriNetUnfolder]: 1/25 cut-off events.
[2021-11-13 18:36:18,211 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES.
[2021-11-13 18:36:18,212 INFO L246 CegarLoopForPetriNet]: Found error trace
[2021-11-13 18:36:18,212 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]
[2021-11-13 18:36:18,212 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] ===
[2021-11-13 18:36:18,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:36:18,213 INFO L85 PathProgramCache]: Analyzing trace with hash 898626907, now seen corresponding path program 1 times
[2021-11-13 18:36:18,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:36:18,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716312049]
[2021-11-13 18:36:18,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:36:18,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:36:18,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:36:18,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:36:18,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:36:18,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716312049]
[2021-11-13 18:36:18,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716312049] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:36:18,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:36:18,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-11-13 18:36:18,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032427787]
[2021-11-13 18:36:18,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:36:18,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2021-11-13 18:36:18,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:36:18,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2021-11-13 18:36:18,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-11-13 18:36:18,293 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 73
[2021-11-13 18:36:18,294 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 125 flow. Second operand has 2 states, 2 states have (on average 63.5) internal successors, (127), 2 states have internal predecessors, (127), 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)
[2021-11-13 18:36:18,294 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2021-11-13 18:36:18,294 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 73
[2021-11-13 18:36:18,295 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2021-11-13 18:36:18,317 INFO L129 PetriNetUnfolder]: 0/82 cut-off events.
[2021-11-13 18:36:18,318 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES.
[2021-11-13 18:36:18,318 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 82 events. 0/82 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 53 event pairs, 0 based on Foata normal form. 4/82 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place.
[2021-11-13 18:36:18,319 INFO L132 encePairwiseOnDemand]: 72/73 looper letters, 3 selfloop transitions, 0 changer transitions 0/51 dead transitions.
[2021-11-13 18:36:18,319 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 51 transitions, 129 flow
[2021-11-13 18:36:18,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2021-11-13 18:36:18,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states.
[2021-11-13 18:36:18,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 130 transitions.
[2021-11-13 18:36:18,322 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8904109589041096
[2021-11-13 18:36:18,322 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 130 transitions.
[2021-11-13 18:36:18,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 130 transitions.
[2021-11-13 18:36:18,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2021-11-13 18:36:18,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 130 transitions.
[2021-11-13 18:36:18,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 65.0) internal successors, (130), 2 states have internal predecessors, (130), 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)
[2021-11-13 18:36:18,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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)
[2021-11-13 18:36:18,327 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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)
[2021-11-13 18:36:18,327 INFO L186 Difference]: Start difference. First operand has 58 places, 52 transitions, 125 flow. Second operand 2 states and 130 transitions.
[2021-11-13 18:36:18,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 51 transitions, 129 flow
[2021-11-13 18:36:18,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 51 transitions, 123 flow, removed 3 selfloop flow, removed 0 redundant places.
[2021-11-13 18:36:18,335 INFO L242 Difference]: Finished difference. Result has 59 places, 51 transitions, 117 flow
[2021-11-13 18:36:18,335 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=117, PETRI_PLACES=59, PETRI_TRANSITIONS=51}
[2021-11-13 18:36:18,337 INFO L334 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places.
[2021-11-13 18:36:18,338 INFO L470 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 117 flow
[2021-11-13 18:36:18,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 63.5) internal successors, (127), 2 states have internal predecessors, (127), 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)
[2021-11-13 18:36:18,339 INFO L246 CegarLoopForPetriNet]: Found error trace
[2021-11-13 18:36:18,339 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]
[2021-11-13 18:36:18,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2021-11-13 18:36:18,340 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] ===
[2021-11-13 18:36:18,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:36:18,342 INFO L85 PathProgramCache]: Analyzing trace with hash 898627868, now seen corresponding path program 1 times
[2021-11-13 18:36:18,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:36:18,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38642203]
[2021-11-13 18:36:18,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:36:18,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:36:18,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:36:18,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:36:18,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:36:18,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38642203]
[2021-11-13 18:36:18,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38642203] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:36:18,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:36:18,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-13 18:36:18,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234340287]
[2021-11-13 18:36:18,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:36:18,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-13 18:36:18,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:36:18,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-13 18:36:18,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-13 18:36:18,410 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 73
[2021-11-13 18:36:18,410 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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)
[2021-11-13 18:36:18,411 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2021-11-13 18:36:18,411 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 73
[2021-11-13 18:36:18,411 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2021-11-13 18:36:18,449 INFO L129 PetriNetUnfolder]: 0/79 cut-off events.
[2021-11-13 18:36:18,449 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES.
[2021-11-13 18:36:18,450 INFO L84 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 79 events. 0/79 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 0. Up to 18 conditions per place.
[2021-11-13 18:36:18,450 INFO L132 encePairwiseOnDemand]: 70/73 looper letters, 12 selfloop transitions, 2 changer transitions 0/55 dead transitions.
[2021-11-13 18:36:18,451 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 55 transitions, 153 flow
[2021-11-13 18:36:18,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-11-13 18:36:18,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2021-11-13 18:36:18,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 183 transitions.
[2021-11-13 18:36:18,453 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8356164383561644
[2021-11-13 18:36:18,454 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 183 transitions.
[2021-11-13 18:36:18,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 183 transitions.
[2021-11-13 18:36:18,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2021-11-13 18:36:18,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 183 transitions.
[2021-11-13 18:36:18,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.0) internal successors, (183), 3 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)
[2021-11-13 18:36:18,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 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)
[2021-11-13 18:36:18,458 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 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)
[2021-11-13 18:36:18,458 INFO L186 Difference]: Start difference. First operand has 59 places, 51 transitions, 117 flow. Second operand 3 states and 183 transitions.
[2021-11-13 18:36:18,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 55 transitions, 153 flow
[2021-11-13 18:36:18,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 55 transitions, 153 flow, removed 0 selfloop flow, removed 0 redundant places.
[2021-11-13 18:36:18,463 INFO L242 Difference]: Finished difference. Result has 62 places, 52 transitions, 129 flow
[2021-11-13 18:36:18,463 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=62, PETRI_TRANSITIONS=52}
[2021-11-13 18:36:18,464 INFO L334 CegarLoopForPetriNet]: 58 programPoint places, 4 predicate places.
[2021-11-13 18:36:18,465 INFO L470 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 129 flow
[2021-11-13 18:36:18,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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)
[2021-11-13 18:36:18,466 INFO L246 CegarLoopForPetriNet]: Found error trace
[2021-11-13 18:36:18,466 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]
[2021-11-13 18:36:18,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2021-11-13 18:36:18,467 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] ===
[2021-11-13 18:36:18,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:36:18,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1823512938, now seen corresponding path program 1 times
[2021-11-13 18:36:18,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:36:18,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673517937]
[2021-11-13 18:36:18,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:36:18,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:36:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:36:18,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-11-13 18:36:18,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:36:18,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673517937]
[2021-11-13 18:36:18,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673517937] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:36:18,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:36:18,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-13 18:36:18,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999306755]
[2021-11-13 18:36:18,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:36:18,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-13 18:36:18,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:36:18,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-13 18:36:18,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-13 18:36:18,515 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 73
[2021-11-13 18:36:18,515 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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)
[2021-11-13 18:36:18,516 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2021-11-13 18:36:18,516 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 73
[2021-11-13 18:36:18,516 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2021-11-13 18:36:18,569 INFO L129 PetriNetUnfolder]: 21/177 cut-off events.
[2021-11-13 18:36:18,570 INFO L130 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES.
[2021-11-13 18:36:18,572 INFO L84 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 177 events. 21/177 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 569 event pairs, 8 based on Foata normal form. 3/175 useless extension candidates. Maximal degree in co-relation 262. Up to 44 conditions per place.
[2021-11-13 18:36:18,574 INFO L132 encePairwiseOnDemand]: 68/73 looper letters, 10 selfloop transitions, 4 changer transitions 0/57 dead transitions.
[2021-11-13 18:36:18,574 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 57 transitions, 177 flow
[2021-11-13 18:36:18,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-11-13 18:36:18,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2021-11-13 18:36:18,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 183 transitions.
[2021-11-13 18:36:18,577 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8356164383561644
[2021-11-13 18:36:18,577 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 183 transitions.
[2021-11-13 18:36:18,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 183 transitions.
[2021-11-13 18:36:18,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2021-11-13 18:36:18,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 183 transitions.
[2021-11-13 18:36:18,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.0) internal successors, (183), 3 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)
[2021-11-13 18:36:18,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 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)
[2021-11-13 18:36:18,581 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 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)
[2021-11-13 18:36:18,582 INFO L186 Difference]: Start difference. First operand has 62 places, 52 transitions, 129 flow. Second operand 3 states and 183 transitions.
[2021-11-13 18:36:18,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 57 transitions, 177 flow
[2021-11-13 18:36:18,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 57 transitions, 175 flow, removed 0 selfloop flow, removed 1 redundant places.
[2021-11-13 18:36:18,587 INFO L242 Difference]: Finished difference. Result has 64 places, 55 transitions, 153 flow
[2021-11-13 18:36:18,587 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=64, PETRI_TRANSITIONS=55}
[2021-11-13 18:36:18,588 INFO L334 CegarLoopForPetriNet]: 58 programPoint places, 6 predicate places.
[2021-11-13 18:36:18,589 INFO L470 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 153 flow
[2021-11-13 18:36:18,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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)
[2021-11-13 18:36:18,590 INFO L246 CegarLoopForPetriNet]: Found error trace
[2021-11-13 18:36:18,590 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]
[2021-11-13 18:36:18,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2021-11-13 18:36:18,591 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] ===
[2021-11-13 18:36:18,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:36:18,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1587743943, now seen corresponding path program 1 times
[2021-11-13 18:36:18,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:36:18,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868748732]
[2021-11-13 18:36:18,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:36:18,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:36:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:36:18,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:36:18,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:36:18,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868748732]
[2021-11-13 18:36:18,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868748732] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 18:36:18,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870569361]
[2021-11-13 18:36:18,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:36:18,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:36:18,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:36:18,647 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:36:18,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2021-11-13 18:36:18,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:36:18,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core
[2021-11-13 18:36:18,739 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:36:18,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:36:18,885 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:36:19,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:36:19,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870569361] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:36:19,035 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-11-13 18:36:19,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10
[2021-11-13 18:36:19,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556211420]
[2021-11-13 18:36:19,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:36:19,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2021-11-13 18:36:19,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:36:19,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-11-13 18:36:19,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90
[2021-11-13 18:36:19,043 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 73
[2021-11-13 18:36:19,045 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 153 flow. Second operand has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 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)
[2021-11-13 18:36:19,045 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2021-11-13 18:36:19,046 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 73
[2021-11-13 18:36:19,046 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2021-11-13 18:36:19,214 INFO L129 PetriNetUnfolder]: 14/115 cut-off events.
[2021-11-13 18:36:19,215 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES.
[2021-11-13 18:36:19,218 INFO L84 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 115 events. 14/115 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 231 event pairs, 6 based on Foata normal form. 2/112 useless extension candidates. Maximal degree in co-relation 184. Up to 29 conditions per place.
[2021-11-13 18:36:19,220 INFO L132 encePairwiseOnDemand]: 67/73 looper letters, 13 selfloop transitions, 9 changer transitions 0/65 dead transitions.
[2021-11-13 18:36:19,220 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 65 transitions, 219 flow
[2021-11-13 18:36:19,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2021-11-13 18:36:19,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states.
[2021-11-13 18:36:19,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 519 transitions.
[2021-11-13 18:36:19,226 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7899543378995434
[2021-11-13 18:36:19,226 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 519 transitions.
[2021-11-13 18:36:19,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 519 transitions.
[2021-11-13 18:36:19,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2021-11-13 18:36:19,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 519 transitions.
[2021-11-13 18:36:19,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 57.666666666666664) internal successors, (519), 9 states have internal predecessors, (519), 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)
[2021-11-13 18:36:19,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 73.0) internal successors, (730), 10 states have internal predecessors, (730), 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)
[2021-11-13 18:36:19,235 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 73.0) internal successors, (730), 10 states have internal predecessors, (730), 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)
[2021-11-13 18:36:19,236 INFO L186 Difference]: Start difference. First operand has 64 places, 55 transitions, 153 flow. Second operand 9 states and 519 transitions.
[2021-11-13 18:36:19,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 65 transitions, 219 flow
[2021-11-13 18:36:19,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 65 transitions, 215 flow, removed 0 selfloop flow, removed 1 redundant places.
[2021-11-13 18:36:19,241 INFO L242 Difference]: Finished difference. Result has 74 places, 61 transitions, 199 flow
[2021-11-13 18:36:19,243 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=199, PETRI_PLACES=74, PETRI_TRANSITIONS=61}
[2021-11-13 18:36:19,244 INFO L334 CegarLoopForPetriNet]: 58 programPoint places, 16 predicate places.
[2021-11-13 18:36:19,245 INFO L470 AbstractCegarLoop]: Abstraction has has 74 places, 61 transitions, 199 flow
[2021-11-13 18:36:19,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 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)
[2021-11-13 18:36:19,246 INFO L246 CegarLoopForPetriNet]: Found error trace
[2021-11-13 18:36:19,246 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 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]
[2021-11-13 18:36:19,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2021-11-13 18:36:19,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2021-11-13 18:36:19,458 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] ===
[2021-11-13 18:36:19,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:36:19,459 INFO L85 PathProgramCache]: Analyzing trace with hash 176735389, now seen corresponding path program 1 times
[2021-11-13 18:36:19,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:36:19,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699776116]
[2021-11-13 18:36:19,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:36:19,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:36:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-11-13 18:36:19,482 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-11-13 18:36:19,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-11-13 18:36:19,519 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2021-11-13 18:36:19,520 INFO L628 BasicCegarLoop]: Counterexample is feasible
[2021-11-13 18:36:19,520 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 2 remaining)
[2021-11-13 18:36:19,520 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining)
[2021-11-13 18:36:19,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2021-11-13 18:36:19,522 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1]
[2021-11-13 18:36:19,522 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis
[2021-11-13 18:36:19,522 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances.
[2021-11-13 18:36:19,535 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,535 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,535 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,536 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,536 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,536 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,536 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,537 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,537 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,537 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,537 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,538 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,538 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,538 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,538 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,539 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,539 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,539 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,539 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,540 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,540 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,540 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,541 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,541 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,541 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,541 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,542 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,542 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,542 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,542 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,542 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,543 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,543 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,543 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,544 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,544 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,544 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,544 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,545 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,545 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,545 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,545 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,546 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,546 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,546 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,546 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,547 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,547 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,547 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,547 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,548 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,548 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,548 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,548 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,549 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,549 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,549 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,549 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,550 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,550 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,550 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,551 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,551 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,551 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,551 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,551 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,552 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,552 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,552 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,552 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,553 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,553 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,553 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,553 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,554 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,554 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,554 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,554 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,555 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,555 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,555 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,556 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,556 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,556 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,557 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,557 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,558 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,558 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,558 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,559 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,559 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,560 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,560 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,560 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,560 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,561 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,562 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,562 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,562 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,562 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:19,565 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions.
[2021-11-13 18:36:19,567 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-11-13 18:36:19,568 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
[2021-11-13 18:36:19,568 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2021-11-13 18:36:19,571 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 80 transitions, 204 flow
[2021-11-13 18:36:19,641 INFO L129 PetriNetUnfolder]: 47/377 cut-off events.
[2021-11-13 18:36:19,641 INFO L130 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES.
[2021-11-13 18:36:19,643 INFO L84 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 377 events. 47/377 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1165 event pairs, 6 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 242. Up to 32 conditions per place.
[2021-11-13 18:36:19,643 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 80 transitions, 204 flow
[2021-11-13 18:36:19,645 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 58 transitions, 148 flow
[2021-11-13 18:36:19,649 INFO L129 PetriNetUnfolder]: 1/26 cut-off events.
[2021-11-13 18:36:19,649 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES.
[2021-11-13 18:36:19,650 INFO L246 CegarLoopForPetriNet]: Found error trace
[2021-11-13 18:36:19,650 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]
[2021-11-13 18:36:19,650 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] ===
[2021-11-13 18:36:19,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:36:19,651 INFO L85 PathProgramCache]: Analyzing trace with hash -2143368340, now seen corresponding path program 1 times
[2021-11-13 18:36:19,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:36:19,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977547083]
[2021-11-13 18:36:19,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:36:19,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:36:19,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:36:19,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:36:19,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:36:19,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977547083]
[2021-11-13 18:36:19,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977547083] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:36:19,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:36:19,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-13 18:36:19,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122406591]
[2021-11-13 18:36:19,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:36:19,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-13 18:36:19,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:36:19,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-13 18:36:19,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-13 18:36:19,686 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 80
[2021-11-13 18:36:19,687 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 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)
[2021-11-13 18:36:19,687 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2021-11-13 18:36:19,687 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 80
[2021-11-13 18:36:19,687 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2021-11-13 18:36:19,729 INFO L129 PetriNetUnfolder]: 0/97 cut-off events.
[2021-11-13 18:36:19,729 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES.
[2021-11-13 18:36:19,730 INFO L84 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 97 events. 0/97 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 68 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 0. Up to 24 conditions per place.
[2021-11-13 18:36:19,730 INFO L132 encePairwiseOnDemand]: 76/80 looper letters, 13 selfloop transitions, 2 changer transitions 0/61 dead transitions.
[2021-11-13 18:36:19,731 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 61 transitions, 184 flow
[2021-11-13 18:36:19,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-11-13 18:36:19,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2021-11-13 18:36:19,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 201 transitions.
[2021-11-13 18:36:19,733 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8375
[2021-11-13 18:36:19,733 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 201 transitions.
[2021-11-13 18:36:19,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 201 transitions.
[2021-11-13 18:36:19,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2021-11-13 18:36:19,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 201 transitions.
[2021-11-13 18:36:19,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 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)
[2021-11-13 18:36:19,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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)
[2021-11-13 18:36:19,737 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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)
[2021-11-13 18:36:19,737 INFO L186 Difference]: Start difference. First operand has 66 places, 58 transitions, 148 flow. Second operand 3 states and 201 transitions.
[2021-11-13 18:36:19,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 61 transitions, 184 flow
[2021-11-13 18:36:19,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 61 transitions, 172 flow, removed 6 selfloop flow, removed 0 redundant places.
[2021-11-13 18:36:19,741 INFO L242 Difference]: Finished difference. Result has 69 places, 58 transitions, 146 flow
[2021-11-13 18:36:19,741 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=69, PETRI_TRANSITIONS=58}
[2021-11-13 18:36:19,742 INFO L334 CegarLoopForPetriNet]: 66 programPoint places, 3 predicate places.
[2021-11-13 18:36:19,742 INFO L470 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 146 flow
[2021-11-13 18:36:19,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 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)
[2021-11-13 18:36:19,743 INFO L246 CegarLoopForPetriNet]: Found error trace
[2021-11-13 18:36:19,743 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]
[2021-11-13 18:36:19,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13
[2021-11-13 18:36:19,744 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] ===
[2021-11-13 18:36:19,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:36:19,745 INFO L85 PathProgramCache]: Analyzing trace with hash -184146753, now seen corresponding path program 1 times
[2021-11-13 18:36:19,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:36:19,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882994697]
[2021-11-13 18:36:19,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:36:19,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:36:19,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:36:19,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-11-13 18:36:19,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:36:19,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882994697]
[2021-11-13 18:36:19,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882994697] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:36:19,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:36:19,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-13 18:36:19,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304698041]
[2021-11-13 18:36:19,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:36:19,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-13 18:36:19,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:36:19,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-13 18:36:19,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-13 18:36:19,799 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 80
[2021-11-13 18:36:19,800 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 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)
[2021-11-13 18:36:19,800 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2021-11-13 18:36:19,800 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 80
[2021-11-13 18:36:19,800 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2021-11-13 18:36:19,906 INFO L129 PetriNetUnfolder]: 73/359 cut-off events.
[2021-11-13 18:36:19,907 INFO L130 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES.
[2021-11-13 18:36:19,909 INFO L84 FinitePrefix]: Finished finitePrefix Result has 568 conditions, 359 events. 73/359 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1623 event pairs, 35 based on Foata normal form. 4/348 useless extension candidates. Maximal degree in co-relation 523. Up to 126 conditions per place.
[2021-11-13 18:36:19,914 INFO L132 encePairwiseOnDemand]: 74/80 looper letters, 13 selfloop transitions, 5 changer transitions 0/65 dead transitions.
[2021-11-13 18:36:19,914 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 65 transitions, 211 flow
[2021-11-13 18:36:19,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-11-13 18:36:19,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2021-11-13 18:36:19,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 199 transitions.
[2021-11-13 18:36:19,917 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8291666666666667
[2021-11-13 18:36:19,917 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 199 transitions.
[2021-11-13 18:36:19,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 199 transitions.
[2021-11-13 18:36:19,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2021-11-13 18:36:19,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 199 transitions.
[2021-11-13 18:36:19,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 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)
[2021-11-13 18:36:19,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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)
[2021-11-13 18:36:19,922 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 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)
[2021-11-13 18:36:19,922 INFO L186 Difference]: Start difference. First operand has 69 places, 58 transitions, 146 flow. Second operand 3 states and 199 transitions.
[2021-11-13 18:36:19,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 65 transitions, 211 flow
[2021-11-13 18:36:19,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 65 transitions, 209 flow, removed 0 selfloop flow, removed 1 redundant places.
[2021-11-13 18:36:19,927 INFO L242 Difference]: Finished difference. Result has 71 places, 62 transitions, 177 flow
[2021-11-13 18:36:19,927 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=177, PETRI_PLACES=71, PETRI_TRANSITIONS=62}
[2021-11-13 18:36:19,928 INFO L334 CegarLoopForPetriNet]: 66 programPoint places, 5 predicate places.
[2021-11-13 18:36:19,929 INFO L470 AbstractCegarLoop]: Abstraction has has 71 places, 62 transitions, 177 flow
[2021-11-13 18:36:19,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 3 states have internal predecessors, (184), 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)
[2021-11-13 18:36:19,956 INFO L246 CegarLoopForPetriNet]: Found error trace
[2021-11-13 18:36:19,956 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]
[2021-11-13 18:36:19,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14
[2021-11-13 18:36:19,956 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] ===
[2021-11-13 18:36:19,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:36:19,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1187205763, now seen corresponding path program 1 times
[2021-11-13 18:36:19,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:36:19,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60003483]
[2021-11-13 18:36:19,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:36:19,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:36:19,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:36:20,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:36:20,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:36:20,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60003483]
[2021-11-13 18:36:20,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60003483] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 18:36:20,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078184391]
[2021-11-13 18:36:20,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:36:20,010 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:36:20,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:36:20,012 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:36:20,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2021-11-13 18:36:20,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:36:20,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core
[2021-11-13 18:36:20,107 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:36:20,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:36:20,239 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:36:20,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:36:20,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078184391] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:36:20,385 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-11-13 18:36:20,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10
[2021-11-13 18:36:20,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699815805]
[2021-11-13 18:36:20,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:36:20,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2021-11-13 18:36:20,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:36:20,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-11-13 18:36:20,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90
[2021-11-13 18:36:20,391 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 80
[2021-11-13 18:36:20,395 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 62 transitions, 177 flow. Second operand has 10 states, 10 states have (on average 62.3) internal successors, (623), 10 states have internal predecessors, (623), 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)
[2021-11-13 18:36:20,396 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2021-11-13 18:36:20,396 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 80
[2021-11-13 18:36:20,396 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2021-11-13 18:36:20,556 INFO L129 PetriNetUnfolder]: 54/233 cut-off events.
[2021-11-13 18:36:20,556 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES.
[2021-11-13 18:36:20,558 INFO L84 FinitePrefix]: Finished finitePrefix Result has 387 conditions, 233 events. 54/233 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 820 event pairs, 28 based on Foata normal form. 2/217 useless extension candidates. Maximal degree in co-relation 324. Up to 92 conditions per place.
[2021-11-13 18:36:20,561 INFO L132 encePairwiseOnDemand]: 74/80 looper letters, 14 selfloop transitions, 9 changer transitions 0/72 dead transitions.
[2021-11-13 18:36:20,561 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 72 transitions, 245 flow
[2021-11-13 18:36:20,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2021-11-13 18:36:20,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states.
[2021-11-13 18:36:20,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 565 transitions.
[2021-11-13 18:36:20,565 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7847222222222222
[2021-11-13 18:36:20,565 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 565 transitions.
[2021-11-13 18:36:20,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 565 transitions.
[2021-11-13 18:36:20,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2021-11-13 18:36:20,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 565 transitions.
[2021-11-13 18:36:20,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 62.77777777777778) internal successors, (565), 9 states have internal predecessors, (565), 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)
[2021-11-13 18:36:20,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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)
[2021-11-13 18:36:20,572 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 80.0) internal successors, (800), 10 states have internal predecessors, (800), 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)
[2021-11-13 18:36:20,572 INFO L186 Difference]: Start difference. First operand has 71 places, 62 transitions, 177 flow. Second operand 9 states and 565 transitions.
[2021-11-13 18:36:20,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 72 transitions, 245 flow
[2021-11-13 18:36:20,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 72 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places.
[2021-11-13 18:36:20,579 INFO L242 Difference]: Finished difference. Result has 81 places, 68 transitions, 222 flow
[2021-11-13 18:36:20,579 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=222, PETRI_PLACES=81, PETRI_TRANSITIONS=68}
[2021-11-13 18:36:20,581 INFO L334 CegarLoopForPetriNet]: 66 programPoint places, 15 predicate places.
[2021-11-13 18:36:20,581 INFO L470 AbstractCegarLoop]: Abstraction has has 81 places, 68 transitions, 222 flow
[2021-11-13 18:36:20,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 62.3) internal successors, (623), 10 states have internal predecessors, (623), 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)
[2021-11-13 18:36:20,582 INFO L246 CegarLoopForPetriNet]: Found error trace
[2021-11-13 18:36:20,582 INFO L254 CegarLoopForPetriNet]: trace histogram [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]
[2021-11-13 18:36:20,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2021-11-13 18:36:20,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2021-11-13 18:36:20,807 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] ===
[2021-11-13 18:36:20,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:36:20,808 INFO L85 PathProgramCache]: Analyzing trace with hash -909312246, now seen corresponding path program 1 times
[2021-11-13 18:36:20,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:36:20,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094505397]
[2021-11-13 18:36:20,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:36:20,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:36:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:36:20,949 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked.
[2021-11-13 18:36:20,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:36:20,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094505397]
[2021-11-13 18:36:20,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094505397] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 18:36:20,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040851793]
[2021-11-13 18:36:20,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:36:20,951 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:36:20,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:36:20,953 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:36:20,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2021-11-13 18:36:21,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:36:21,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core
[2021-11-13 18:36:21,061 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:36:21,295 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked.
[2021-11-13 18:36:21,296 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:36:21,512 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked.
[2021-11-13 18:36:21,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040851793] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:36:21,513 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-11-13 18:36:21,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15
[2021-11-13 18:36:21,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348769223]
[2021-11-13 18:36:21,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:36:21,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2021-11-13 18:36:21,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:36:21,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2021-11-13 18:36:21,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210
[2021-11-13 18:36:21,518 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 80
[2021-11-13 18:36:21,520 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 68 transitions, 222 flow. Second operand has 15 states, 15 states have (on average 53.6) internal successors, (804), 15 states have internal predecessors, (804), 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)
[2021-11-13 18:36:21,520 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2021-11-13 18:36:21,521 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 80
[2021-11-13 18:36:21,521 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2021-11-13 18:36:22,427 INFO L129 PetriNetUnfolder]: 768/1925 cut-off events.
[2021-11-13 18:36:22,427 INFO L130 PetriNetUnfolder]: For 1179/1187 co-relation queries the response was YES.
[2021-11-13 18:36:22,442 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4594 conditions, 1925 events. 768/1925 cut-off events. For 1179/1187 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 12692 event pairs, 54 based on Foata normal form. 13/1938 useless extension candidates. Maximal degree in co-relation 1672. Up to 663 conditions per place.
[2021-11-13 18:36:22,471 INFO L132 encePairwiseOnDemand]: 68/80 looper letters, 70 selfloop transitions, 66 changer transitions 0/175 dead transitions.
[2021-11-13 18:36:22,471 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 175 transitions, 999 flow
[2021-11-13 18:36:22,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2021-11-13 18:36:22,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states.
[2021-11-13 18:36:22,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1082 transitions.
[2021-11-13 18:36:22,479 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7118421052631579
[2021-11-13 18:36:22,479 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1082 transitions.
[2021-11-13 18:36:22,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1082 transitions.
[2021-11-13 18:36:22,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2021-11-13 18:36:22,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1082 transitions.
[2021-11-13 18:36:22,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 56.94736842105263) internal successors, (1082), 19 states have internal predecessors, (1082), 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)
[2021-11-13 18:36:22,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 80.0) internal successors, (1600), 20 states have internal predecessors, (1600), 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)
[2021-11-13 18:36:22,495 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 80.0) internal successors, (1600), 20 states have internal predecessors, (1600), 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)
[2021-11-13 18:36:22,495 INFO L186 Difference]: Start difference. First operand has 81 places, 68 transitions, 222 flow. Second operand 19 states and 1082 transitions.
[2021-11-13 18:36:22,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 175 transitions, 999 flow
[2021-11-13 18:36:22,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 175 transitions, 971 flow, removed 12 selfloop flow, removed 1 redundant places.
[2021-11-13 18:36:22,508 INFO L242 Difference]: Finished difference. Result has 100 places, 121 transitions, 607 flow
[2021-11-13 18:36:22,509 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=607, PETRI_PLACES=100, PETRI_TRANSITIONS=121}
[2021-11-13 18:36:22,509 INFO L334 CegarLoopForPetriNet]: 66 programPoint places, 34 predicate places.
[2021-11-13 18:36:22,510 INFO L470 AbstractCegarLoop]: Abstraction has has 100 places, 121 transitions, 607 flow
[2021-11-13 18:36:22,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 53.6) internal successors, (804), 15 states have internal predecessors, (804), 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)
[2021-11-13 18:36:22,511 INFO L246 CegarLoopForPetriNet]: Found error trace
[2021-11-13 18:36:22,511 INFO L254 CegarLoopForPetriNet]: trace histogram [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]
[2021-11-13 18:36:22,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2021-11-13 18:36:22,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:36:22,727 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] ===
[2021-11-13 18:36:22,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:36:22,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1362214409, now seen corresponding path program 1 times
[2021-11-13 18:36:22,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:36:22,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252972160]
[2021-11-13 18:36:22,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:36:22,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:36:22,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:36:22,882 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2021-11-13 18:36:22,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:36:22,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252972160]
[2021-11-13 18:36:22,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252972160] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 18:36:22,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977681295]
[2021-11-13 18:36:22,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:36:22,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:36:22,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:36:22,884 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:36:22,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2021-11-13 18:36:23,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:36:23,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjunts are in the unsatisfiable core
[2021-11-13 18:36:23,006 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:36:23,270 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2021-11-13 18:36:23,270 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:36:23,610 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2021-11-13 18:36:23,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977681295] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:36:23,611 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-11-13 18:36:23,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20
[2021-11-13 18:36:23,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190859504]
[2021-11-13 18:36:23,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:36:23,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states
[2021-11-13 18:36:23,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:36:23,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2021-11-13 18:36:23,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380
[2021-11-13 18:36:23,614 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 80
[2021-11-13 18:36:23,616 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 121 transitions, 607 flow. Second operand has 20 states, 20 states have (on average 52.9) internal successors, (1058), 20 states have internal predecessors, (1058), 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)
[2021-11-13 18:36:23,616 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2021-11-13 18:36:23,616 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 80
[2021-11-13 18:36:23,616 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2021-11-13 18:36:25,760 INFO L129 PetriNetUnfolder]: 1764/4298 cut-off events.
[2021-11-13 18:36:25,760 INFO L130 PetriNetUnfolder]: For 4575/4585 co-relation queries the response was YES.
[2021-11-13 18:36:25,804 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12409 conditions, 4298 events. 1764/4298 cut-off events. For 4575/4585 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 34284 event pairs, 65 based on Foata normal form. 28/4326 useless extension candidates. Maximal degree in co-relation 4818. Up to 1292 conditions per place.
[2021-11-13 18:36:25,865 INFO L132 encePairwiseOnDemand]: 66/80 looper letters, 113 selfloop transitions, 180 changer transitions 0/337 dead transitions.
[2021-11-13 18:36:25,865 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 337 transitions, 2519 flow
[2021-11-13 18:36:25,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states.
[2021-11-13 18:36:25,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states.
[2021-11-13 18:36:25,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 2224 transitions.
[2021-11-13 18:36:25,880 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6780487804878049
[2021-11-13 18:36:25,881 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 2224 transitions.
[2021-11-13 18:36:25,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 2224 transitions.
[2021-11-13 18:36:25,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2021-11-13 18:36:25,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 2224 transitions.
[2021-11-13 18:36:25,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 54.24390243902439) internal successors, (2224), 41 states have internal predecessors, (2224), 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)
[2021-11-13 18:36:25,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 80.0) internal successors, (3360), 42 states have internal predecessors, (3360), 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)
[2021-11-13 18:36:25,913 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 80.0) internal successors, (3360), 42 states have internal predecessors, (3360), 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)
[2021-11-13 18:36:25,914 INFO L186 Difference]: Start difference. First operand has 100 places, 121 transitions, 607 flow. Second operand 41 states and 2224 transitions.
[2021-11-13 18:36:25,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 337 transitions, 2519 flow
[2021-11-13 18:36:25,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 337 transitions, 2497 flow, removed 1 selfloop flow, removed 5 redundant places.
[2021-11-13 18:36:25,977 INFO L242 Difference]: Finished difference. Result has 140 places, 255 transitions, 1863 flow
[2021-11-13 18:36:25,978 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=1863, PETRI_PLACES=140, PETRI_TRANSITIONS=255}
[2021-11-13 18:36:25,979 INFO L334 CegarLoopForPetriNet]: 66 programPoint places, 74 predicate places.
[2021-11-13 18:36:25,979 INFO L470 AbstractCegarLoop]: Abstraction has has 140 places, 255 transitions, 1863 flow
[2021-11-13 18:36:25,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 52.9) internal successors, (1058), 20 states have internal predecessors, (1058), 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)
[2021-11-13 18:36:25,980 INFO L246 CegarLoopForPetriNet]: Found error trace
[2021-11-13 18:36:25,981 INFO L254 CegarLoopForPetriNet]: trace histogram [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]
[2021-11-13 18:36:26,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2021-11-13 18:36:26,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2021-11-13 18:36:26,208 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] ===
[2021-11-13 18:36:26,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:36:26,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1109338339, now seen corresponding path program 1 times
[2021-11-13 18:36:26,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:36:26,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129576486]
[2021-11-13 18:36:26,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:36:26,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:36:26,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:36:26,349 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:36:26,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:36:26,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129576486]
[2021-11-13 18:36:26,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129576486] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 18:36:26,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326226592]
[2021-11-13 18:36:26,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:36:26,351 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:36:26,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:36:26,353 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:36:26,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2021-11-13 18:36:26,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:36:26,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjunts are in the unsatisfiable core
[2021-11-13 18:36:26,461 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:36:26,732 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:36:26,733 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:36:27,052 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:36:27,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326226592] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:36:27,053 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-11-13 18:36:27,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 21
[2021-11-13 18:36:27,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057707468]
[2021-11-13 18:36:27,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:36:27,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2021-11-13 18:36:27,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:36:27,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2021-11-13 18:36:27,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420
[2021-11-13 18:36:27,059 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 80
[2021-11-13 18:36:27,062 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 255 transitions, 1863 flow. Second operand has 21 states, 21 states have (on average 52.904761904761905) internal successors, (1111), 21 states have internal predecessors, (1111), 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)
[2021-11-13 18:36:27,062 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2021-11-13 18:36:27,062 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 80
[2021-11-13 18:36:27,063 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2021-11-13 18:36:30,212 INFO L129 PetriNetUnfolder]: 2710/6167 cut-off events.
[2021-11-13 18:36:30,213 INFO L130 PetriNetUnfolder]: For 14796/14898 co-relation queries the response was YES.
[2021-11-13 18:36:30,281 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20066 conditions, 6167 events. 2710/6167 cut-off events. For 14796/14898 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 49685 event pairs, 0 based on Foata normal form. 295/6461 useless extension candidates. Maximal degree in co-relation 9451. Up to 1549 conditions per place.
[2021-11-13 18:36:30,361 INFO L132 encePairwiseOnDemand]: 67/80 looper letters, 380 selfloop transitions, 600 changer transitions 0/1041 dead transitions.
[2021-11-13 18:36:30,363 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 1041 transitions, 10637 flow
[2021-11-13 18:36:30,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states.
[2021-11-13 18:36:30,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states.
[2021-11-13 18:36:30,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 3228 transitions.
[2021-11-13 18:36:30,374 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6838983050847458
[2021-11-13 18:36:30,374 INFO L72 ComplementDD]: Start complementDD. Operand 59 states and 3228 transitions.
[2021-11-13 18:36:30,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 3228 transitions.
[2021-11-13 18:36:30,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2021-11-13 18:36:30,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 59 states and 3228 transitions.
[2021-11-13 18:36:30,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 60 states, 59 states have (on average 54.71186440677966) internal successors, (3228), 59 states have internal predecessors, (3228), 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)
[2021-11-13 18:36:30,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 60 states, 60 states have (on average 80.0) internal successors, (4800), 60 states have internal predecessors, (4800), 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)
[2021-11-13 18:36:30,500 INFO L81 ComplementDD]: Finished complementDD. Result has 60 states, 60 states have (on average 80.0) internal successors, (4800), 60 states have internal predecessors, (4800), 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)
[2021-11-13 18:36:30,501 INFO L186 Difference]: Start difference. First operand has 140 places, 255 transitions, 1863 flow. Second operand 59 states and 3228 transitions.
[2021-11-13 18:36:30,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 1041 transitions, 10637 flow
[2021-11-13 18:36:30,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 1041 transitions, 10210 flow, removed 15 selfloop flow, removed 15 redundant places.
[2021-11-13 18:36:30,685 INFO L242 Difference]: Finished difference. Result has 187 places, 737 transitions, 6892 flow
[2021-11-13 18:36:30,686 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=1661, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=6892, PETRI_PLACES=187, PETRI_TRANSITIONS=737}
[2021-11-13 18:36:30,687 INFO L334 CegarLoopForPetriNet]: 66 programPoint places, 121 predicate places.
[2021-11-13 18:36:30,687 INFO L470 AbstractCegarLoop]: Abstraction has has 187 places, 737 transitions, 6892 flow
[2021-11-13 18:36:30,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 52.904761904761905) internal successors, (1111), 21 states have internal predecessors, (1111), 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)
[2021-11-13 18:36:30,689 INFO L246 CegarLoopForPetriNet]: Found error trace
[2021-11-13 18:36:30,689 INFO L254 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 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]
[2021-11-13 18:36:30,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2021-11-13 18:36:30,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:36:30,905 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] ===
[2021-11-13 18:36:30,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:36:30,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1693116247, now seen corresponding path program 1 times
[2021-11-13 18:36:30,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:36:30,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534629676]
[2021-11-13 18:36:30,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:36:30,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:36:30,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-11-13 18:36:30,958 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-11-13 18:36:30,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-11-13 18:36:30,993 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2021-11-13 18:36:30,993 INFO L628 BasicCegarLoop]: Counterexample is feasible
[2021-11-13 18:36:30,994 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 2 remaining)
[2021-11-13 18:36:30,994 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining)
[2021-11-13 18:36:30,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19
[2021-11-13 18:36:30,995 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:36:30,995 WARN L234 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis
[2021-11-13 18:36:30,996 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances.
[2021-11-13 18:36:31,007 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,007 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,007 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,007 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,008 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,008 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,008 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,008 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,008 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,008 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,009 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,009 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,009 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,009 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,009 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,010 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,010 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,010 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,010 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,010 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,011 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,011 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,011 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,011 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,012 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,012 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,012 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,012 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,012 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,012 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,013 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,013 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,013 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,013 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,013 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,014 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,014 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,014 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,014 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,014 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,015 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,015 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,015 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,015 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,016 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,016 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,016 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,016 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,016 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,016 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,017 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,017 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,017 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,017 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,017 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,018 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,018 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,018 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,018 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,018 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,019 WARN L322 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,019 WARN L322 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,019 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,019 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,019 WARN L322 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,020 WARN L322 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,020 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,020 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,020 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,020 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,021 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,021 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,021 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,021 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,021 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,022 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,022 WARN L322 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,022 WARN L322 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,022 WARN L322 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,022 WARN L322 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,023 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,023 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,023 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,023 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,023 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,024 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,024 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,024 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,024 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,024 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,024 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,025 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,025 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,025 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,025 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,025 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,026 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,026 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,026 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,026 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,027 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,027 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,027 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,028 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,028 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,029 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,029 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,029 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,029 WARN L322 ript$VariableManager]: TermVariabe |threadThread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,030 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,030 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,031 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,031 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,031 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,031 WARN L322 ript$VariableManager]: TermVariabe |threadThread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,032 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,032 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,032 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,033 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,033 WARN L322 ript$VariableManager]: TermVariabe |threadThread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,034 WARN L322 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,034 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,034 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~thread~0 not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,034 WARN L322 ript$VariableManager]: TermVariabe |threadThread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,034 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes.
[2021-11-13 18:36:31,037 INFO L148 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions.
[2021-11-13 18:36:31,044 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-11-13 18:36:31,044 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
[2021-11-13 18:36:31,045 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2021-11-13 18:36:31,049 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 90 places, 87 transitions, 234 flow
[2021-11-13 18:36:31,169 INFO L129 PetriNetUnfolder]: 98/672 cut-off events.
[2021-11-13 18:36:31,169 INFO L130 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES.
[2021-11-13 18:36:31,173 INFO L84 FinitePrefix]: Finished finitePrefix Result has 783 conditions, 672 events. 98/672 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2833 event pairs, 23 based on Foata normal form. 0/584 useless extension candidates. Maximal degree in co-relation 422. Up to 80 conditions per place.
[2021-11-13 18:36:31,173 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 87 transitions, 234 flow
[2021-11-13 18:36:31,176 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 64 transitions, 173 flow
[2021-11-13 18:36:31,179 INFO L129 PetriNetUnfolder]: 1/26 cut-off events.
[2021-11-13 18:36:31,179 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES.
[2021-11-13 18:36:31,180 INFO L246 CegarLoopForPetriNet]: Found error trace
[2021-11-13 18:36:31,180 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]
[2021-11-13 18:36:31,180 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] ===
[2021-11-13 18:36:31,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:36:31,181 INFO L85 PathProgramCache]: Analyzing trace with hash 239291490, now seen corresponding path program 1 times
[2021-11-13 18:36:31,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:36:31,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871569630]
[2021-11-13 18:36:31,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:36:31,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:36:31,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:36:31,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:36:31,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:36:31,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871569630]
[2021-11-13 18:36:31,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871569630] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:36:31,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:36:31,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-11-13 18:36:31,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245703856]
[2021-11-13 18:36:31,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:36:31,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2021-11-13 18:36:31,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:36:31,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2021-11-13 18:36:31,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2021-11-13 18:36:31,202 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 87
[2021-11-13 18:36:31,203 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 64 transitions, 173 flow. Second operand has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 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)
[2021-11-13 18:36:31,203 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2021-11-13 18:36:31,203 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 87
[2021-11-13 18:36:31,204 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2021-11-13 18:36:31,227 INFO L129 PetriNetUnfolder]: 0/118 cut-off events.
[2021-11-13 18:36:31,228 INFO L130 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES.
[2021-11-13 18:36:31,228 INFO L84 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 118 events. 0/118 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 83 event pairs, 0 based on Foata normal form. 6/118 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place.
[2021-11-13 18:36:31,229 INFO L132 encePairwiseOnDemand]: 86/87 looper letters, 5 selfloop transitions, 0 changer transitions 0/63 dead transitions.
[2021-11-13 18:36:31,229 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 63 transitions, 181 flow
[2021-11-13 18:36:31,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2021-11-13 18:36:31,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states.
[2021-11-13 18:36:31,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 152 transitions.
[2021-11-13 18:36:31,230 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8735632183908046
[2021-11-13 18:36:31,231 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 152 transitions.
[2021-11-13 18:36:31,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 152 transitions.
[2021-11-13 18:36:31,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2021-11-13 18:36:31,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 152 transitions.
[2021-11-13 18:36:31,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 76.0) internal successors, (152), 2 states have internal predecessors, (152), 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)
[2021-11-13 18:36:31,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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)
[2021-11-13 18:36:31,233 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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)
[2021-11-13 18:36:31,233 INFO L186 Difference]: Start difference. First operand has 74 places, 64 transitions, 173 flow. Second operand 2 states and 152 transitions.
[2021-11-13 18:36:31,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 63 transitions, 181 flow
[2021-11-13 18:36:31,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 63 transitions, 161 flow, removed 10 selfloop flow, removed 0 redundant places.
[2021-11-13 18:36:31,236 INFO L242 Difference]: Finished difference. Result has 75 places, 63 transitions, 151 flow
[2021-11-13 18:36:31,236 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=151, PETRI_PLACES=75, PETRI_TRANSITIONS=63}
[2021-11-13 18:36:31,237 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 1 predicate places.
[2021-11-13 18:36:31,237 INFO L470 AbstractCegarLoop]: Abstraction has has 75 places, 63 transitions, 151 flow
[2021-11-13 18:36:31,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 73.5) internal successors, (147), 2 states have internal predecessors, (147), 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)
[2021-11-13 18:36:31,238 INFO L246 CegarLoopForPetriNet]: Found error trace
[2021-11-13 18:36:31,238 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]
[2021-11-13 18:36:31,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20
[2021-11-13 18:36:31,239 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] ===
[2021-11-13 18:36:31,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:36:31,239 INFO L85 PathProgramCache]: Analyzing trace with hash 239292451, now seen corresponding path program 1 times
[2021-11-13 18:36:31,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:36:31,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829778126]
[2021-11-13 18:36:31,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:36:31,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:36:31,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:36:31,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:36:31,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:36:31,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829778126]
[2021-11-13 18:36:31,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829778126] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:36:31,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:36:31,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-13 18:36:31,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27505698]
[2021-11-13 18:36:31,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:36:31,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-13 18:36:31,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:36:31,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-13 18:36:31,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-13 18:36:31,266 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 87
[2021-11-13 18:36:31,267 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 63 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 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)
[2021-11-13 18:36:31,267 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2021-11-13 18:36:31,267 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 87
[2021-11-13 18:36:31,268 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2021-11-13 18:36:31,314 INFO L129 PetriNetUnfolder]: 0/115 cut-off events.
[2021-11-13 18:36:31,314 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES.
[2021-11-13 18:36:31,314 INFO L84 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 115 events. 0/115 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 83 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 0. Up to 30 conditions per place.
[2021-11-13 18:36:31,315 INFO L132 encePairwiseOnDemand]: 84/87 looper letters, 14 selfloop transitions, 2 changer transitions 0/67 dead transitions.
[2021-11-13 18:36:31,316 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 67 transitions, 191 flow
[2021-11-13 18:36:31,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-11-13 18:36:31,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2021-11-13 18:36:31,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 215 transitions.
[2021-11-13 18:36:31,318 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8237547892720306
[2021-11-13 18:36:31,318 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 215 transitions.
[2021-11-13 18:36:31,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 215 transitions.
[2021-11-13 18:36:31,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2021-11-13 18:36:31,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 215 transitions.
[2021-11-13 18:36:31,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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)
[2021-11-13 18:36:31,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 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)
[2021-11-13 18:36:31,322 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 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)
[2021-11-13 18:36:31,322 INFO L186 Difference]: Start difference. First operand has 75 places, 63 transitions, 151 flow. Second operand 3 states and 215 transitions.
[2021-11-13 18:36:31,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 67 transitions, 191 flow
[2021-11-13 18:36:31,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 67 transitions, 191 flow, removed 0 selfloop flow, removed 0 redundant places.
[2021-11-13 18:36:31,325 INFO L242 Difference]: Finished difference. Result has 78 places, 64 transitions, 163 flow
[2021-11-13 18:36:31,326 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=163, PETRI_PLACES=78, PETRI_TRANSITIONS=64}
[2021-11-13 18:36:31,327 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 4 predicate places.
[2021-11-13 18:36:31,327 INFO L470 AbstractCegarLoop]: Abstraction has has 78 places, 64 transitions, 163 flow
[2021-11-13 18:36:31,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 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)
[2021-11-13 18:36:31,327 INFO L246 CegarLoopForPetriNet]: Found error trace
[2021-11-13 18:36:31,328 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]
[2021-11-13 18:36:31,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21
[2021-11-13 18:36:31,328 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] ===
[2021-11-13 18:36:31,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:36:31,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1483448859, now seen corresponding path program 1 times
[2021-11-13 18:36:31,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:36:31,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223151897]
[2021-11-13 18:36:31,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:36:31,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:36:31,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:36:31,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-11-13 18:36:31,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:36:31,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223151897]
[2021-11-13 18:36:31,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223151897] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:36:31,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:36:31,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-13 18:36:31,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345282131]
[2021-11-13 18:36:31,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:36:31,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-11-13 18:36:31,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:36:31,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-11-13 18:36:31,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-11-13 18:36:31,422 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 87
[2021-11-13 18:36:31,423 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 64 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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)
[2021-11-13 18:36:31,423 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2021-11-13 18:36:31,423 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 87
[2021-11-13 18:36:31,423 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2021-11-13 18:36:31,622 INFO L129 PetriNetUnfolder]: 212/733 cut-off events.
[2021-11-13 18:36:31,623 INFO L130 PetriNetUnfolder]: For 92/92 co-relation queries the response was YES.
[2021-11-13 18:36:31,629 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1205 conditions, 733 events. 212/733 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 4068 event pairs, 118 based on Foata normal form. 5/703 useless extension candidates. Maximal degree in co-relation 1195. Up to 327 conditions per place.
[2021-11-13 18:36:31,641 INFO L132 encePairwiseOnDemand]: 80/87 looper letters, 16 selfloop transitions, 6 changer transitions 0/73 dead transitions.
[2021-11-13 18:36:31,642 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 73 transitions, 245 flow
[2021-11-13 18:36:31,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2021-11-13 18:36:31,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2021-11-13 18:36:31,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 215 transitions.
[2021-11-13 18:36:31,644 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8237547892720306
[2021-11-13 18:36:31,644 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 215 transitions.
[2021-11-13 18:36:31,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 215 transitions.
[2021-11-13 18:36:31,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2021-11-13 18:36:31,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 215 transitions.
[2021-11-13 18:36:31,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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)
[2021-11-13 18:36:31,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 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)
[2021-11-13 18:36:31,649 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 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)
[2021-11-13 18:36:31,649 INFO L186 Difference]: Start difference. First operand has 78 places, 64 transitions, 163 flow. Second operand 3 states and 215 transitions.
[2021-11-13 18:36:31,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 73 transitions, 245 flow
[2021-11-13 18:36:31,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 73 transitions, 243 flow, removed 0 selfloop flow, removed 1 redundant places.
[2021-11-13 18:36:31,654 INFO L242 Difference]: Finished difference. Result has 80 places, 69 transitions, 201 flow
[2021-11-13 18:36:31,654 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=201, PETRI_PLACES=80, PETRI_TRANSITIONS=69}
[2021-11-13 18:36:31,655 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 6 predicate places.
[2021-11-13 18:36:31,656 INFO L470 AbstractCegarLoop]: Abstraction has has 80 places, 69 transitions, 201 flow
[2021-11-13 18:36:31,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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)
[2021-11-13 18:36:31,656 INFO L246 CegarLoopForPetriNet]: Found error trace
[2021-11-13 18:36:31,657 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]
[2021-11-13 18:36:31,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22
[2021-11-13 18:36:31,659 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] ===
[2021-11-13 18:36:31,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:36:31,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1737726477, now seen corresponding path program 1 times
[2021-11-13 18:36:31,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:36:31,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94861981]
[2021-11-13 18:36:31,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:36:31,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:36:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:36:31,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:36:31,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:36:31,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94861981]
[2021-11-13 18:36:31,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94861981] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 18:36:31,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631427443]
[2021-11-13 18:36:31,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:36:31,728 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:36:31,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:36:31,732 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:36:31,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2021-11-13 18:36:31,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:36:31,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core
[2021-11-13 18:36:31,845 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:36:31,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:36:31,935 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:36:32,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:36:32,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631427443] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:36:32,032 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-11-13 18:36:32,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10
[2021-11-13 18:36:32,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922977127]
[2021-11-13 18:36:32,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:36:32,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2021-11-13 18:36:32,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:36:32,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-11-13 18:36:32,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90
[2021-11-13 18:36:32,036 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 87
[2021-11-13 18:36:32,037 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 69 transitions, 201 flow. Second operand has 10 states, 10 states have (on average 67.3) internal successors, (673), 10 states have internal predecessors, (673), 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)
[2021-11-13 18:36:32,037 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2021-11-13 18:36:32,038 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 87
[2021-11-13 18:36:32,038 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2021-11-13 18:36:32,221 INFO L129 PetriNetUnfolder]: 161/489 cut-off events.
[2021-11-13 18:36:32,222 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES.
[2021-11-13 18:36:32,225 INFO L84 FinitePrefix]: Finished finitePrefix Result has 812 conditions, 489 events. 161/489 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2426 event pairs, 94 based on Foata normal form. 2/442 useless extension candidates. Maximal degree in co-relation 801. Up to 246 conditions per place.
[2021-11-13 18:36:32,230 INFO L132 encePairwiseOnDemand]: 81/87 looper letters, 15 selfloop transitions, 9 changer transitions 0/79 dead transitions.
[2021-11-13 18:36:32,230 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 79 transitions, 271 flow
[2021-11-13 18:36:32,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2021-11-13 18:36:32,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states.
[2021-11-13 18:36:32,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 611 transitions.
[2021-11-13 18:36:32,233 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7803320561941252
[2021-11-13 18:36:32,233 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 611 transitions.
[2021-11-13 18:36:32,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 611 transitions.
[2021-11-13 18:36:32,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2021-11-13 18:36:32,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 611 transitions.
[2021-11-13 18:36:32,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 67.88888888888889) internal successors, (611), 9 states have internal predecessors, (611), 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)
[2021-11-13 18:36:32,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 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)
[2021-11-13 18:36:32,240 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 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)
[2021-11-13 18:36:32,240 INFO L186 Difference]: Start difference. First operand has 80 places, 69 transitions, 201 flow. Second operand 9 states and 611 transitions.
[2021-11-13 18:36:32,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 79 transitions, 271 flow
[2021-11-13 18:36:32,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 79 transitions, 265 flow, removed 0 selfloop flow, removed 1 redundant places.
[2021-11-13 18:36:32,245 INFO L242 Difference]: Finished difference. Result has 90 places, 75 transitions, 245 flow
[2021-11-13 18:36:32,245 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=245, PETRI_PLACES=90, PETRI_TRANSITIONS=75}
[2021-11-13 18:36:32,246 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 16 predicate places.
[2021-11-13 18:36:32,246 INFO L470 AbstractCegarLoop]: Abstraction has has 90 places, 75 transitions, 245 flow
[2021-11-13 18:36:32,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 67.3) internal successors, (673), 10 states have internal predecessors, (673), 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)
[2021-11-13 18:36:32,247 INFO L246 CegarLoopForPetriNet]: Found error trace
[2021-11-13 18:36:32,248 INFO L254 CegarLoopForPetriNet]: trace histogram [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]
[2021-11-13 18:36:32,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2021-11-13 18:36:32,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23
[2021-11-13 18:36:32,463 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] ===
[2021-11-13 18:36:32,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:36:32,464 INFO L85 PathProgramCache]: Analyzing trace with hash 157483872, now seen corresponding path program 1 times
[2021-11-13 18:36:32,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:36:32,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141261584]
[2021-11-13 18:36:32,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:36:32,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:36:32,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:36:32,580 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked.
[2021-11-13 18:36:32,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:36:32,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141261584]
[2021-11-13 18:36:32,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141261584] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 18:36:32,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16021527]
[2021-11-13 18:36:32,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:36:32,582 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:36:32,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:36:32,583 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:36:32,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2021-11-13 18:36:32,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:36:32,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core
[2021-11-13 18:36:32,683 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:36:32,952 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:36:32,953 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:36:33,163 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:36:33,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16021527] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:36:33,164 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-11-13 18:36:33,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 16
[2021-11-13 18:36:33,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690806740]
[2021-11-13 18:36:33,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:36:33,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2021-11-13 18:36:33,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:36:33,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2021-11-13 18:36:33,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240
[2021-11-13 18:36:33,173 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 87
[2021-11-13 18:36:33,182 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 75 transitions, 245 flow. Second operand has 16 states, 16 states have (on average 57.3125) internal successors, (917), 16 states have internal predecessors, (917), 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)
[2021-11-13 18:36:33,183 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2021-11-13 18:36:33,183 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 87
[2021-11-13 18:36:33,183 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2021-11-13 18:36:36,058 INFO L129 PetriNetUnfolder]: 2264/4409 cut-off events.
[2021-11-13 18:36:36,058 INFO L130 PetriNetUnfolder]: For 2523/2523 co-relation queries the response was YES.
[2021-11-13 18:36:36,088 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11286 conditions, 4409 events. 2264/4409 cut-off events. For 2523/2523 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 29439 event pairs, 78 based on Foata normal form. 74/4483 useless extension candidates. Maximal degree in co-relation 11273. Up to 1984 conditions per place.
[2021-11-13 18:36:36,126 INFO L132 encePairwiseOnDemand]: 71/87 looper letters, 171 selfloop transitions, 243 changer transitions 0/454 dead transitions.
[2021-11-13 18:36:36,126 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 454 transitions, 2650 flow
[2021-11-13 18:36:36,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states.
[2021-11-13 18:36:36,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states.
[2021-11-13 18:36:36,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 4667 transitions.
[2021-11-13 18:36:36,139 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6790339007711335
[2021-11-13 18:36:36,140 INFO L72 ComplementDD]: Start complementDD. Operand 79 states and 4667 transitions.
[2021-11-13 18:36:36,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 4667 transitions.
[2021-11-13 18:36:36,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2021-11-13 18:36:36,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 79 states and 4667 transitions.
[2021-11-13 18:36:36,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 80 states, 79 states have (on average 59.075949367088604) internal successors, (4667), 79 states have internal predecessors, (4667), 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)
[2021-11-13 18:36:36,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 80 states, 80 states have (on average 87.0) internal successors, (6960), 80 states have internal predecessors, (6960), 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)
[2021-11-13 18:36:36,177 INFO L81 ComplementDD]: Finished complementDD. Result has 80 states, 80 states have (on average 87.0) internal successors, (6960), 80 states have internal predecessors, (6960), 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)
[2021-11-13 18:36:36,177 INFO L186 Difference]: Start difference. First operand has 90 places, 75 transitions, 245 flow. Second operand 79 states and 4667 transitions.
[2021-11-13 18:36:36,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 454 transitions, 2650 flow
[2021-11-13 18:36:36,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 454 transitions, 2598 flow, removed 24 selfloop flow, removed 1 redundant places.
[2021-11-13 18:36:36,196 INFO L242 Difference]: Finished difference. Result has 193 places, 311 transitions, 1969 flow
[2021-11-13 18:36:36,197 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=79, PETRI_FLOW=1969, PETRI_PLACES=193, PETRI_TRANSITIONS=311}
[2021-11-13 18:36:36,198 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 119 predicate places.
[2021-11-13 18:36:36,198 INFO L470 AbstractCegarLoop]: Abstraction has has 193 places, 311 transitions, 1969 flow
[2021-11-13 18:36:36,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 57.3125) internal successors, (917), 16 states have internal predecessors, (917), 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)
[2021-11-13 18:36:36,199 INFO L246 CegarLoopForPetriNet]: Found error trace
[2021-11-13 18:36:36,199 INFO L254 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:36:36,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2021-11-13 18:36:36,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24
[2021-11-13 18:36:36,416 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] ===
[2021-11-13 18:36:36,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:36:36,417 INFO L85 PathProgramCache]: Analyzing trace with hash -184578877, now seen corresponding path program 1 times
[2021-11-13 18:36:36,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:36:36,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814570742]
[2021-11-13 18:36:36,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:36:36,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:36:36,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:36:36,617 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 88 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:36:36,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:36:36,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814570742]
[2021-11-13 18:36:36,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814570742] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 18:36:36,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574628905]
[2021-11-13 18:36:36,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:36:36,618 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:36:36,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:36:36,624 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:36:36,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2021-11-13 18:36:36,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:36:36,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 12 conjunts are in the unsatisfiable core
[2021-11-13 18:36:36,736 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:36:36,945 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:36:36,945 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-11-13 18:36:36,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574628905] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:36:36,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2021-11-13 18:36:36,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 15
[2021-11-13 18:36:36,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956915949]
[2021-11-13 18:36:36,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:36:36,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2021-11-13 18:36:36,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:36:36,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-11-13 18:36:36,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210
[2021-11-13 18:36:36,950 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 87
[2021-11-13 18:36:36,951 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 311 transitions, 1969 flow. Second operand has 13 states, 13 states have (on average 67.61538461538461) internal successors, (879), 13 states have internal predecessors, (879), 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)
[2021-11-13 18:36:36,951 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2021-11-13 18:36:36,952 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 87
[2021-11-13 18:36:36,952 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2021-11-13 18:36:37,904 INFO L129 PetriNetUnfolder]: 926/2474 cut-off events.
[2021-11-13 18:36:37,905 INFO L130 PetriNetUnfolder]: For 30531/31152 co-relation queries the response was YES.
[2021-11-13 18:36:37,945 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11431 conditions, 2474 events. 926/2474 cut-off events. For 30531/31152 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 18260 event pairs, 213 based on Foata normal form. 353/2730 useless extension candidates. Maximal degree in co-relation 11391. Up to 1007 conditions per place.
[2021-11-13 18:36:37,983 INFO L132 encePairwiseOnDemand]: 82/87 looper letters, 17 selfloop transitions, 82 changer transitions 0/311 dead transitions.
[2021-11-13 18:36:37,984 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 311 transitions, 2137 flow
[2021-11-13 18:36:37,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2021-11-13 18:36:37,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states.
[2021-11-13 18:36:37,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1204 transitions.
[2021-11-13 18:36:37,992 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.768837803320562
[2021-11-13 18:36:37,992 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1204 transitions.
[2021-11-13 18:36:37,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1204 transitions.
[2021-11-13 18:36:37,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2021-11-13 18:36:37,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1204 transitions.
[2021-11-13 18:36:37,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 66.88888888888889) internal successors, (1204), 18 states have internal predecessors, (1204), 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)
[2021-11-13 18:36:38,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 87.0) internal successors, (1653), 19 states have internal predecessors, (1653), 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)
[2021-11-13 18:36:38,009 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 87.0) internal successors, (1653), 19 states have internal predecessors, (1653), 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)
[2021-11-13 18:36:38,009 INFO L186 Difference]: Start difference. First operand has 193 places, 311 transitions, 1969 flow. Second operand 18 states and 1204 transitions.
[2021-11-13 18:36:38,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 311 transitions, 2137 flow
[2021-11-13 18:36:38,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 311 transitions, 1953 flow, removed 27 selfloop flow, removed 12 redundant places.
[2021-11-13 18:36:38,162 INFO L242 Difference]: Finished difference. Result has 197 places, 304 transitions, 1885 flow
[2021-11-13 18:36:38,163 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=1721, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1885, PETRI_PLACES=197, PETRI_TRANSITIONS=304}
[2021-11-13 18:36:38,164 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 123 predicate places.
[2021-11-13 18:36:38,165 INFO L470 AbstractCegarLoop]: Abstraction has has 197 places, 304 transitions, 1885 flow
[2021-11-13 18:36:38,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 67.61538461538461) internal successors, (879), 13 states have internal predecessors, (879), 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)
[2021-11-13 18:36:38,165 INFO L246 CegarLoopForPetriNet]: Found error trace
[2021-11-13 18:36:38,166 INFO L254 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:36:38,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2021-11-13 18:36:38,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25
[2021-11-13 18:36:38,391 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] ===
[2021-11-13 18:36:38,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:36:38,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1466686242, now seen corresponding path program 1 times
[2021-11-13 18:36:38,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:36:38,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306713079]
[2021-11-13 18:36:38,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:36:38,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:36:38,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:36:38,521 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked.
[2021-11-13 18:36:38,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:36:38,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306713079]
[2021-11-13 18:36:38,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306713079] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 18:36:38,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159845851]
[2021-11-13 18:36:38,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:36:38,523 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:36:38,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:36:38,524 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:36:38,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2021-11-13 18:36:38,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:36:38,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 10 conjunts are in the unsatisfiable core
[2021-11-13 18:36:38,642 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:36:38,965 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked.
[2021-11-13 18:36:38,966 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:36:39,334 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked.
[2021-11-13 18:36:39,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159845851] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:36:39,335 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-11-13 18:36:39,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20
[2021-11-13 18:36:39,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646841742]
[2021-11-13 18:36:39,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:36:39,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states
[2021-11-13 18:36:39,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:36:39,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2021-11-13 18:36:39,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380
[2021-11-13 18:36:39,344 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 87
[2021-11-13 18:36:39,345 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 304 transitions, 1885 flow. Second operand has 20 states, 20 states have (on average 57.7) internal successors, (1154), 20 states have internal predecessors, (1154), 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)
[2021-11-13 18:36:39,346 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2021-11-13 18:36:39,346 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 87
[2021-11-13 18:36:39,346 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2021-11-13 18:36:42,409 INFO L129 PetriNetUnfolder]: 4044/7969 cut-off events.
[2021-11-13 18:36:42,409 INFO L130 PetriNetUnfolder]: For 72958/72980 co-relation queries the response was YES.
[2021-11-13 18:36:42,492 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37934 conditions, 7969 events. 4044/7969 cut-off events. For 72958/72980 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 59380 event pairs, 66 based on Foata normal form. 44/8013 useless extension candidates. Maximal degree in co-relation 37896. Up to 3105 conditions per place.
[2021-11-13 18:36:42,596 INFO L132 encePairwiseOnDemand]: 72/87 looper letters, 333 selfloop transitions, 374 changer transitions 0/794 dead transitions.
[2021-11-13 18:36:42,596 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 794 transitions, 7248 flow
[2021-11-13 18:36:42,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states.
[2021-11-13 18:36:42,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states.
[2021-11-13 18:36:42,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 2406 transitions.
[2021-11-13 18:36:42,603 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6745164003364171
[2021-11-13 18:36:42,603 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 2406 transitions.
[2021-11-13 18:36:42,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 2406 transitions.
[2021-11-13 18:36:42,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2021-11-13 18:36:42,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 2406 transitions.
[2021-11-13 18:36:42,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 58.68292682926829) internal successors, (2406), 41 states have internal predecessors, (2406), 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)
[2021-11-13 18:36:42,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 87.0) internal successors, (3654), 42 states have internal predecessors, (3654), 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)
[2021-11-13 18:36:42,620 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 87.0) internal successors, (3654), 42 states have internal predecessors, (3654), 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)
[2021-11-13 18:36:42,620 INFO L186 Difference]: Start difference. First operand has 197 places, 304 transitions, 1885 flow. Second operand 41 states and 2406 transitions.
[2021-11-13 18:36:42,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 794 transitions, 7248 flow
[2021-11-13 18:36:43,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 794 transitions, 6504 flow, removed 0 selfloop flow, removed 15 redundant places.
[2021-11-13 18:36:43,046 INFO L242 Difference]: Finished difference. Result has 224 places, 566 transitions, 4395 flow
[2021-11-13 18:36:43,047 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=1655, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=4395, PETRI_PLACES=224, PETRI_TRANSITIONS=566}
[2021-11-13 18:36:43,047 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 150 predicate places.
[2021-11-13 18:36:43,048 INFO L470 AbstractCegarLoop]: Abstraction has has 224 places, 566 transitions, 4395 flow
[2021-11-13 18:36:43,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 57.7) internal successors, (1154), 20 states have internal predecessors, (1154), 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)
[2021-11-13 18:36:43,048 INFO L246 CegarLoopForPetriNet]: Found error trace
[2021-11-13 18:36:43,049 INFO L254 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:36:43,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2021-11-13 18:36:43,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26
[2021-11-13 18:36:43,263 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] ===
[2021-11-13 18:36:43,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:36:43,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1484109075, now seen corresponding path program 1 times
[2021-11-13 18:36:43,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:36:43,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102146163]
[2021-11-13 18:36:43,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:36:43,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:36:43,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:36:43,425 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2021-11-13 18:36:43,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:36:43,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102146163]
[2021-11-13 18:36:43,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102146163] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 18:36:43,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612998196]
[2021-11-13 18:36:43,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:36:43,427 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:36:43,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:36:43,435 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:36:43,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2021-11-13 18:36:43,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:36:43,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 12 conjunts are in the unsatisfiable core
[2021-11-13 18:36:43,549 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:36:44,004 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2021-11-13 18:36:44,005 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:36:44,326 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2021-11-13 18:36:44,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612998196] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:36:44,327 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-11-13 18:36:44,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23
[2021-11-13 18:36:44,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686114341]
[2021-11-13 18:36:44,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:36:44,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2021-11-13 18:36:44,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:36:44,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2021-11-13 18:36:44,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506
[2021-11-13 18:36:44,332 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 87
[2021-11-13 18:36:44,334 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 566 transitions, 4395 flow. Second operand has 23 states, 23 states have (on average 57.34782608695652) internal successors, (1319), 23 states have internal predecessors, (1319), 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)
[2021-11-13 18:36:44,335 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2021-11-13 18:36:44,335 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 87
[2021-11-13 18:36:44,335 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2021-11-13 18:36:50,006 INFO L129 PetriNetUnfolder]: 7761/15568 cut-off events.
[2021-11-13 18:36:50,007 INFO L130 PetriNetUnfolder]: For 168204/168299 co-relation queries the response was YES.
[2021-11-13 18:36:50,393 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76750 conditions, 15568 events. 7761/15568 cut-off events. For 168204/168299 co-relation queries the response was YES. Maximal size of possible extension queue 713. Compared 132651 event pairs, 90 based on Foata normal form. 93/15656 useless extension candidates. Maximal degree in co-relation 76710. Up to 5383 conditions per place.
[2021-11-13 18:36:50,587 INFO L132 encePairwiseOnDemand]: 73/87 looper letters, 392 selfloop transitions, 859 changer transitions 0/1356 dead transitions.
[2021-11-13 18:36:50,588 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 1356 transitions, 14830 flow
[2021-11-13 18:36:50,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states.
[2021-11-13 18:36:50,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states.
[2021-11-13 18:36:50,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 3846 transitions.
[2021-11-13 18:36:50,613 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.680106100795756
[2021-11-13 18:36:50,614 INFO L72 ComplementDD]: Start complementDD. Operand 65 states and 3846 transitions.
[2021-11-13 18:36:50,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 3846 transitions.
[2021-11-13 18:36:50,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2021-11-13 18:36:50,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 65 states and 3846 transitions.
[2021-11-13 18:36:50,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 66 states, 65 states have (on average 59.16923076923077) internal successors, (3846), 65 states have internal predecessors, (3846), 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)
[2021-11-13 18:36:50,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 66 states, 66 states have (on average 87.0) internal successors, (5742), 66 states have internal predecessors, (5742), 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)
[2021-11-13 18:36:50,648 INFO L81 ComplementDD]: Finished complementDD. Result has 66 states, 66 states have (on average 87.0) internal successors, (5742), 66 states have internal predecessors, (5742), 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)
[2021-11-13 18:36:50,649 INFO L186 Difference]: Start difference. First operand has 224 places, 566 transitions, 4395 flow. Second operand 65 states and 3846 transitions.
[2021-11-13 18:36:50,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 1356 transitions, 14830 flow
[2021-11-13 18:36:51,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 1356 transitions, 14017 flow, removed 233 selfloop flow, removed 10 redundant places.
[2021-11-13 18:36:51,850 INFO L242 Difference]: Finished difference. Result has 286 places, 1129 transitions, 11002 flow
[2021-11-13 18:36:51,851 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=4168, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=296, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=11002, PETRI_PLACES=286, PETRI_TRANSITIONS=1129}
[2021-11-13 18:36:51,852 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 212 predicate places.
[2021-11-13 18:36:51,852 INFO L470 AbstractCegarLoop]: Abstraction has has 286 places, 1129 transitions, 11002 flow
[2021-11-13 18:36:51,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 57.34782608695652) internal successors, (1319), 23 states have internal predecessors, (1319), 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)
[2021-11-13 18:36:51,853 INFO L246 CegarLoopForPetriNet]: Found error trace
[2021-11-13 18:36:51,853 INFO L254 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:36:51,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0
[2021-11-13 18:36:52,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27
[2021-11-13 18:36:52,079 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] ===
[2021-11-13 18:36:52,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:36:52,080 INFO L85 PathProgramCache]: Analyzing trace with hash 813208193, now seen corresponding path program 1 times
[2021-11-13 18:36:52,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:36:52,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563971194]
[2021-11-13 18:36:52,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:36:52,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:36:52,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:36:52,261 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-11-13 18:36:52,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:36:52,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563971194]
[2021-11-13 18:36:52,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563971194] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 18:36:52,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194590245]
[2021-11-13 18:36:52,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:36:52,263 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:36:52,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:36:52,264 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:36:52,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2021-11-13 18:36:52,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:36:52,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 14 conjunts are in the unsatisfiable core
[2021-11-13 18:36:52,385 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:36:52,676 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-11-13 18:36:52,677 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:36:53,009 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-11-13 18:36:53,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194590245] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:36:53,010 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-11-13 18:36:53,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23
[2021-11-13 18:36:53,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819543446]
[2021-11-13 18:36:53,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:36:53,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2021-11-13 18:36:53,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:36:53,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2021-11-13 18:36:53,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506
[2021-11-13 18:36:53,014 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 87
[2021-11-13 18:36:53,015 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 1129 transitions, 11002 flow. Second operand has 23 states, 23 states have (on average 57.04347826086956) internal successors, (1312), 23 states have internal predecessors, (1312), 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)
[2021-11-13 18:36:53,015 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2021-11-13 18:36:53,015 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 87
[2021-11-13 18:36:53,016 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2021-11-13 18:37:04,254 INFO L129 PetriNetUnfolder]: 13758/27553 cut-off events.
[2021-11-13 18:37:04,255 INFO L130 PetriNetUnfolder]: For 321118/321418 co-relation queries the response was YES.
[2021-11-13 18:37:04,836 INFO L84 FinitePrefix]: Finished finitePrefix Result has 137915 conditions, 27553 events. 13758/27553 cut-off events. For 321118/321418 co-relation queries the response was YES. Maximal size of possible extension queue 1339. Compared 255943 event pairs, 130 based on Foata normal form. 246/27779 useless extension candidates. Maximal degree in co-relation 137872. Up to 8280 conditions per place.
[2021-11-13 18:37:05,008 INFO L132 encePairwiseOnDemand]: 73/87 looper letters, 453 selfloop transitions, 1615 changer transitions 0/2203 dead transitions.
[2021-11-13 18:37:05,008 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 2203 transitions, 27206 flow
[2021-11-13 18:37:05,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states.
[2021-11-13 18:37:05,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states.
[2021-11-13 18:37:05,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 3140 transitions.
[2021-11-13 18:37:05,016 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6809802645846887
[2021-11-13 18:37:05,016 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 3140 transitions.
[2021-11-13 18:37:05,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 3140 transitions.
[2021-11-13 18:37:05,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2021-11-13 18:37:05,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 3140 transitions.
[2021-11-13 18:37:05,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 59.24528301886792) internal successors, (3140), 53 states have internal predecessors, (3140), 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)
[2021-11-13 18:37:05,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 87.0) internal successors, (4698), 54 states have internal predecessors, (4698), 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)
[2021-11-13 18:37:05,037 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 87.0) internal successors, (4698), 54 states have internal predecessors, (4698), 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)
[2021-11-13 18:37:05,037 INFO L186 Difference]: Start difference. First operand has 286 places, 1129 transitions, 11002 flow. Second operand 53 states and 3140 transitions.
[2021-11-13 18:37:05,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 2203 transitions, 27206 flow
[2021-11-13 18:37:12,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 2203 transitions, 26708 flow, removed 182 selfloop flow, removed 15 redundant places.
[2021-11-13 18:37:12,337 INFO L242 Difference]: Finished difference. Result has 328 places, 2016 transitions, 24087 flow
[2021-11-13 18:37:12,339 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=10668, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=728, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=24087, PETRI_PLACES=328, PETRI_TRANSITIONS=2016}
[2021-11-13 18:37:12,339 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 254 predicate places.
[2021-11-13 18:37:12,340 INFO L470 AbstractCegarLoop]: Abstraction has has 328 places, 2016 transitions, 24087 flow
[2021-11-13 18:37:12,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 57.04347826086956) internal successors, (1312), 23 states have internal predecessors, (1312), 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)
[2021-11-13 18:37:12,341 INFO L246 CegarLoopForPetriNet]: Found error trace
[2021-11-13 18:37:12,341 INFO L254 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:37:12,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0
[2021-11-13 18:37:12,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28
[2021-11-13 18:37:12,557 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION] ===
[2021-11-13 18:37:12,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:37:12,557 INFO L85 PathProgramCache]: Analyzing trace with hash 933906732, now seen corresponding path program 1 times
[2021-11-13 18:37:12,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:37:12,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334666024]
[2021-11-13 18:37:12,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:37:12,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:37:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:37:12,640 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked.
[2021-11-13 18:37:12,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:37:12,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334666024]
[2021-11-13 18:37:12,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334666024] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:37:12,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:37:12,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2021-11-13 18:37:12,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633683067]
[2021-11-13 18:37:12,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:37:12,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2021-11-13 18:37:12,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:37:12,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-11-13 18:37:12,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2021-11-13 18:37:12,645 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 87
[2021-11-13 18:37:12,645 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 2016 transitions, 24087 flow. Second operand has 7 states, 7 states have (on average 58.142857142857146) internal successors, (407), 7 states have internal predecessors, (407), 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)
[2021-11-13 18:37:12,645 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2021-11-13 18:37:12,646 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 87
[2021-11-13 18:37:12,646 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2021-11-13 18:37:28,969 INFO L129 PetriNetUnfolder]: 20206/41363 cut-off events.
[2021-11-13 18:37:28,969 INFO L130 PetriNetUnfolder]: For 450710/451229 co-relation queries the response was YES.
[2021-11-13 18:37:29,663 INFO L84 FinitePrefix]: Finished finitePrefix Result has 195284 conditions, 41363 events. 20206/41363 cut-off events. For 450710/451229 co-relation queries the response was YES. Maximal size of possible extension queue 2129. Compared 426891 event pairs, 200 based on Foata normal form. 469/41758 useless extension candidates. Maximal degree in co-relation 195237. Up to 10349 conditions per place.
[2021-11-13 18:37:29,706 INFO L132 encePairwiseOnDemand]: 74/87 looper letters, 0 selfloop transitions, 0 changer transitions 3079/3079 dead transitions.
[2021-11-13 18:37:29,706 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 3079 transitions, 44657 flow
[2021-11-13 18:37:29,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2021-11-13 18:37:29,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states.
[2021-11-13 18:37:29,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1052 transitions.
[2021-11-13 18:37:29,710 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.711291413116971
[2021-11-13 18:37:29,710 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1052 transitions.
[2021-11-13 18:37:29,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1052 transitions.
[2021-11-13 18:37:29,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2021-11-13 18:37:29,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1052 transitions.
[2021-11-13 18:37:29,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 61.88235294117647) internal successors, (1052), 17 states have internal predecessors, (1052), 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)
[2021-11-13 18:37:29,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 87.0) internal successors, (1566), 18 states have internal predecessors, (1566), 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)
[2021-11-13 18:37:29,718 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 87.0) internal successors, (1566), 18 states have internal predecessors, (1566), 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)
[2021-11-13 18:37:29,718 INFO L186 Difference]: Start difference. First operand has 328 places, 2016 transitions, 24087 flow. Second operand 17 states and 1052 transitions.
[2021-11-13 18:37:29,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 3079 transitions, 44657 flow
[2021-11-13 18:37:51,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 3079 transitions, 43734 flow, removed 270 selfloop flow, removed 21 redundant places.
[2021-11-13 18:37:51,727 INFO L242 Difference]: Finished difference. Result has 321 places, 0 transitions, 0 flow
[2021-11-13 18:37:51,728 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=23326, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2014, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2014, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=0, PETRI_PLACES=321, PETRI_TRANSITIONS=0}
[2021-11-13 18:37:51,729 INFO L334 CegarLoopForPetriNet]: 74 programPoint places, 247 predicate places.
[2021-11-13 18:37:51,729 INFO L470 AbstractCegarLoop]: Abstraction has has 321 places, 0 transitions, 0 flow
[2021-11-13 18:37:51,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 58.142857142857146) internal successors, (407), 7 states have internal predecessors, (407), 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)
[2021-11-13 18:37:51,730 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining)
[2021-11-13 18:37:51,730 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (0 of 2 remaining)
[2021-11-13 18:37:51,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29
[2021-11-13 18:37:51,730 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:37:51,732 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 5 thread instances
[2021-11-13 18:37:51,732 INFO L179 ceAbstractionStarter]: Computing trace abstraction results
[2021-11-13 18:37:51,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 06:37:51 BasicIcfg
[2021-11-13 18:37:51,742 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-11-13 18:37:51,742 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2021-11-13 18:37:51,742 INFO L271 PluginConnector]: Initializing Witness Printer...
[2021-11-13 18:37:51,743 INFO L275 PluginConnector]: Witness Printer initialized
[2021-11-13 18:37:51,743 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:36:14" (3/4) ...
[2021-11-13 18:37:51,747 INFO L137 WitnessPrinter]: Generating witness for correct program
[2021-11-13 18:37:51,755 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread
[2021-11-13 18:37:51,759 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges
[2021-11-13 18:37:51,760 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges
[2021-11-13 18:37:51,760 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges
[2021-11-13 18:37:51,760 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2021-11-13 18:37:51,794 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/witness.graphml
[2021-11-13 18:37:51,794 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2021-11-13 18:37:51,795 INFO L158 Benchmark]: Toolchain (without parser) took 98948.58ms. Allocated memory was 81.8MB in the beginning and 8.1GB in the end (delta: 8.0GB). Free memory was 43.0MB in the beginning and 6.5GB in the end (delta: -6.4GB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB.
[2021-11-13 18:37:51,795 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 81.8MB. Free memory was 60.5MB in the beginning and 60.4MB in the end (delta: 46.2kB). There was no memory consumed. Max. memory is 16.1GB.
[2021-11-13 18:37:51,796 INFO L158 Benchmark]: CACSL2BoogieTranslator took 915.99ms. Allocated memory was 81.8MB in the beginning and 117.4MB in the end (delta: 35.7MB). Free memory was 42.8MB in the beginning and 83.3MB in the end (delta: -40.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
[2021-11-13 18:37:51,796 INFO L158 Benchmark]: Boogie Procedure Inliner took 88.58ms. Allocated memory is still 117.4MB. Free memory was 83.3MB in the beginning and 81.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2021-11-13 18:37:51,797 INFO L158 Benchmark]: Boogie Preprocessor took 44.44ms. Allocated memory is still 117.4MB. Free memory was 81.6MB in the beginning and 80.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2021-11-13 18:37:51,802 INFO L158 Benchmark]: RCFGBuilder took 826.83ms. Allocated memory is still 117.4MB. Free memory was 80.0MB in the beginning and 69.1MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
[2021-11-13 18:37:51,803 INFO L158 Benchmark]: TraceAbstraction took 97003.22ms. Allocated memory was 117.4MB in the beginning and 8.1GB in the end (delta: 8.0GB). Free memory was 68.1MB in the beginning and 6.5GB in the end (delta: -6.4GB). Peak memory consumption was 6.0GB. Max. memory is 16.1GB.
[2021-11-13 18:37:51,803 INFO L158 Benchmark]: Witness Printer took 51.81ms. Allocated memory is still 8.1GB. Free memory was 6.5GB in the beginning and 6.5GB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2021-11-13 18:37:51,809 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.45ms. Allocated memory is still 81.8MB. Free memory was 60.5MB in the beginning and 60.4MB in the end (delta: 46.2kB). There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 915.99ms. Allocated memory was 81.8MB in the beginning and 117.4MB in the end (delta: 35.7MB). Free memory was 42.8MB in the beginning and 83.3MB in the end (delta: -40.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 88.58ms. Allocated memory is still 117.4MB. Free memory was 83.3MB in the beginning and 81.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 44.44ms. Allocated memory is still 117.4MB. Free memory was 81.6MB in the beginning and 80.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 826.83ms. Allocated memory is still 117.4MB. Free memory was 80.0MB in the beginning and 69.1MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
* TraceAbstraction took 97003.22ms. Allocated memory was 117.4MB in the beginning and 8.1GB in the end (delta: 8.0GB). Free memory was 68.1MB in the beginning and 6.5GB in the end (delta: -6.4GB). Peak memory consumption was 6.0GB. Max. memory is 16.1GB.
* Witness Printer took 51.81ms. Allocated memory is still 8.1GB. Free memory was 6.5GB in the beginning and 6.5GB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* 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
- 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
- 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
- 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
- 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: 727]: 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 3 procedures, 62 locations, 2 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: 1.5s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4 SdHoareTripleChecker+Valid, 36.63ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 24.69ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13 IncrementalHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 8 mSDtfsCounter, 13 mSolverCounterSat, 1.02ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=95occurred in iteration=3, InterpolantAutomatonStates: 8, 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, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 104 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
- StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances
CFG has 4 procedures, 68 locations, 2 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: 1.6s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 87.17ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 67.32ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 49 IncrementalHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 12 mSDtfsCounter, 49 mSolverCounterSat, 5.31ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred in iteration=3, 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, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 173 NumberOfCodeBlocks, 173 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 159 ConstructedInterpolants, 0 QuantifiedInterpolants, 253 SizeOfPredicates, 2 NumberOfNonLiveVariables, 91 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 1/4 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
- StatisticsResult: Ultimate Automizer benchmark data with 3 thread instances
CFG has 5 procedures, 74 locations, 2 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: 1.4s, OverallIterations: 5, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 31 SdHoareTripleChecker+Valid, 85.98ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 31 mSDsluCounter, 19 SdHoareTripleChecker+Invalid, 64.39ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 59 IncrementalHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 14 mSDtfsCounter, 59 mSolverCounterSat, 2.08ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=199occurred in iteration=4, InterpolantAutomatonStates: 17, 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, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 206 NumberOfCodeBlocks, 206 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 181 ConstructedInterpolants, 0 QuantifiedInterpolants, 275 SizeOfPredicates, 2 NumberOfNonLiveVariables, 91 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 1/4 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
- StatisticsResult: Ultimate Automizer benchmark data with 4 thread instances
CFG has 6 procedures, 80 locations, 2 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: 11.4s, OverallIterations: 7, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1059 SdHoareTripleChecker+Valid, 956.24ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1059 mSDsluCounter, 588 SdHoareTripleChecker+Invalid, 769.80ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 493 mSDsCounter, 139 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 773 IncrementalHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 139 mSolverCounterUnsat, 98 mSDtfsCounter, 773 mSolverCounterSat, 21.66ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 543 GetRequests, 375 SyntacticMatches, 1 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2577 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6892occurred in iteration=6, InterpolantAutomatonStates: 134, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 529 NumberOfCodeBlocks, 529 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 654 ConstructedInterpolants, 0 QuantifiedInterpolants, 1446 SizeOfPredicates, 26 NumberOfNonLiveVariables, 478 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 76/301 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
- StatisticsResult: Ultimate Automizer benchmark data with 5 thread instances
CFG has 7 procedures, 86 locations, 2 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: 80.7s, OverallIterations: 10, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 74.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2207 SdHoareTripleChecker+Valid, 1566.36ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2207 mSDsluCounter, 1285 SdHoareTripleChecker+Invalid, 1259.85ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1094 mSDsCounter, 282 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1659 IncrementalHoareTripleChecker+Invalid, 1941 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 282 mSolverCounterUnsat, 195 mSDtfsCounter, 1659 mSolverCounterSat, 31.85ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1027 GetRequests, 684 SyntacticMatches, 2 SemanticMatches, 341 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7457 ImplicationChecksByTransitivity, 5.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24087occurred in iteration=9, InterpolantAutomatonStates: 290, 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: 0.2s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 945 NumberOfCodeBlocks, 945 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1244 ConstructedInterpolants, 0 QuantifiedInterpolants, 3284 SizeOfPredicates, 48 NumberOfNonLiveVariables, 884 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 21 InterpolantComputations, 5 PerfectInterpolantSequences, 455/1403 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!
[2021-11-13 18:37:51,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f64c2949-2757-44c7-8f60-565194df1561/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Writing output log to file Ultimate.log
Result:
TRUE