./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for memory safety (deref-memtrack)
Using default analysis
Version b2eff8ba
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fac7ba-0a37-452c-ae38-6508d5e203ac/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fac7ba-0a37-452c-ae38-6508d5e203ac/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fac7ba-0a37-452c-ae38-6508d5e203ac/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fac7ba-0a37-452c-ae38-6508d5e203ac/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fac7ba-0a37-452c-ae38-6508d5e203ac/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fac7ba-0a37-452c-ae38-6508d5e203ac/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 67e6429a6543f453ac429a23a8d2fcad0657c53add4186ba92445fb458193f20
...........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
Execution finished normally
Writing output log to file Ultimate.log
Writing human readable error path to file UltimateCounterExample.errorpath
Result:
FALSE(valid-deref)
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-b2eff8b
[2021-10-28 23:09:20,918 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-10-28 23:09:20,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-10-28 23:09:20,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-10-28 23:09:20,987 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-10-28 23:09:20,991 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-10-28 23:09:20,993 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-10-28 23:09:20,997 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-10-28 23:09:21,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-10-28 23:09:21,006 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-10-28 23:09:21,007 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-10-28 23:09:21,009 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-10-28 23:09:21,010 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-10-28 23:09:21,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-10-28 23:09:21,016 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-10-28 23:09:21,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-10-28 23:09:21,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-10-28 23:09:21,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-10-28 23:09:21,028 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-10-28 23:09:21,039 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-10-28 23:09:21,041 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-10-28 23:09:21,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-10-28 23:09:21,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-10-28 23:09:21,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-10-28 23:09:21,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-10-28 23:09:21,057 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-10-28 23:09:21,058 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-10-28 23:09:21,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-10-28 23:09:21,061 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-10-28 23:09:21,063 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-10-28 23:09:21,063 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-10-28 23:09:21,064 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-10-28 23:09:21,067 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-10-28 23:09:21,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-10-28 23:09:21,070 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-10-28 23:09:21,070 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-10-28 23:09:21,071 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-10-28 23:09:21,072 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-10-28 23:09:21,072 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-10-28 23:09:21,073 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-10-28 23:09:21,074 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-10-28 23:09:21,077 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fac7ba-0a37-452c-ae38-6508d5e203ac/bin/uautomizer-GMMbpWq8iD/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf
[2021-10-28 23:09:21,126 INFO L113 SettingsManager]: Loading preferences was successful
[2021-10-28 23:09:21,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-10-28 23:09:21,127 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-10-28 23:09:21,127 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-10-28 23:09:21,132 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-10-28 23:09:21,132 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-10-28 23:09:21,132 INFO L138 SettingsManager]: * Use SBE=true
[2021-10-28 23:09:21,133 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-10-28 23:09:21,133 INFO L138 SettingsManager]: * sizeof long=4
[2021-10-28 23:09:21,133 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false
[2021-10-28 23:09:21,133 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-10-28 23:09:21,133 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-10-28 23:09:21,134 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-10-28 23:09:21,134 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2021-10-28 23:09:21,134 INFO L138 SettingsManager]: * Bitprecise bitfields=true
[2021-10-28 23:09:21,134 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2021-10-28 23:09:21,134 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-10-28 23:09:21,135 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2021-10-28 23:09:21,135 INFO L138 SettingsManager]: * sizeof long double=12
[2021-10-28 23:09:21,135 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-10-28 23:09:21,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-10-28 23:09:21,135 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-10-28 23:09:21,136 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-10-28 23:09:21,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-10-28 23:09:21,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-10-28 23:09:21,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-10-28 23:09:21,136 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-10-28 23:09:21,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-10-28 23:09:21,137 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-10-28 23:09:21,139 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_25fac7ba-0a37-452c-ae38-6508d5e203ac/bin/uautomizer-GMMbpWq8iD/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fac7ba-0a37-452c-ae38-6508d5e203ac/bin/uautomizer-GMMbpWq8iD
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67e6429a6543f453ac429a23a8d2fcad0657c53add4186ba92445fb458193f20
[2021-10-28 23:09:21,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-10-28 23:09:21,490 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-10-28 23:09:21,494 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-10-28 23:09:21,496 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-10-28 23:09:21,497 INFO L275 PluginConnector]: CDTParser initialized
[2021-10-28 23:09:21,498 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fac7ba-0a37-452c-ae38-6508d5e203ac/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i
[2021-10-28 23:09:21,602 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fac7ba-0a37-452c-ae38-6508d5e203ac/bin/uautomizer-GMMbpWq8iD/data/039d911bd/8b447eeafecf46d591b5b23b3415c776/FLAGfbedda6bd
[2021-10-28 23:09:22,199 INFO L306 CDTParser]: Found 1 translation units.
[2021-10-28 23:09:22,200 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fac7ba-0a37-452c-ae38-6508d5e203ac/sv-benchmarks/c/array-memsafety/reverse_array_alloca_unsafe.i
[2021-10-28 23:09:22,211 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fac7ba-0a37-452c-ae38-6508d5e203ac/bin/uautomizer-GMMbpWq8iD/data/039d911bd/8b447eeafecf46d591b5b23b3415c776/FLAGfbedda6bd
[2021-10-28 23:09:22,524 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fac7ba-0a37-452c-ae38-6508d5e203ac/bin/uautomizer-GMMbpWq8iD/data/039d911bd/8b447eeafecf46d591b5b23b3415c776
[2021-10-28 23:09:22,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-10-28 23:09:22,528 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements.
[2021-10-28 23:09:22,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-10-28 23:09:22,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-10-28 23:09:22,548 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-10-28 23:09:22,549 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:09:22" (1/1) ...
[2021-10-28 23:09:22,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52311047 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:22, skipping insertion in model container
[2021-10-28 23:09:22,550 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:09:22" (1/1) ...
[2021-10-28 23:09:22,557 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-10-28 23:09:22,601 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-10-28 23:09:22,909 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-10-28 23:09:22,919 INFO L203 MainTranslator]: Completed pre-run
[2021-10-28 23:09:22,991 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-10-28 23:09:23,015 INFO L208 MainTranslator]: Completed translation
[2021-10-28 23:09:23,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:23 WrapperNode
[2021-10-28 23:09:23,016 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-10-28 23:09:23,017 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-10-28 23:09:23,017 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-10-28 23:09:23,017 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-10-28 23:09:23,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:23" (1/1) ...
[2021-10-28 23:09:23,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:23" (1/1) ...
[2021-10-28 23:09:23,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:23" (1/1) ...
[2021-10-28 23:09:23,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:23" (1/1) ...
[2021-10-28 23:09:23,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:23" (1/1) ...
[2021-10-28 23:09:23,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:23" (1/1) ...
[2021-10-28 23:09:23,062 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:23" (1/1) ...
[2021-10-28 23:09:23,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-10-28 23:09:23,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-10-28 23:09:23,070 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-10-28 23:09:23,070 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-10-28 23:09:23,071 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:23" (1/1) ...
[2021-10-28 23:09:23,078 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-10-28 23:09:23,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fac7ba-0a37-452c-ae38-6508d5e203ac/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:09:23,102 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fac7ba-0a37-452c-ae38-6508d5e203ac/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-10-28 23:09:23,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fac7ba-0a37-452c-ae38-6508d5e203ac/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-10-28 23:09:23,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2021-10-28 23:09:23,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-10-28 23:09:23,145 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32
[2021-10-28 23:09:23,145 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64
[2021-10-28 23:09:23,145 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity
[2021-10-28 23:09:23,145 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity
[2021-10-28 23:09:23,145 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity
[2021-10-28 23:09:23,146 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2021-10-28 23:09:23,146 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max
[2021-10-28 23:09:23,146 INFO L130 BoogieDeclarations]: Found specification of procedure atof
[2021-10-28 23:09:23,146 INFO L130 BoogieDeclarations]: Found specification of procedure atoi
[2021-10-28 23:09:23,146 INFO L130 BoogieDeclarations]: Found specification of procedure atol
[2021-10-28 23:09:23,147 INFO L130 BoogieDeclarations]: Found specification of procedure atoll
[2021-10-28 23:09:23,147 INFO L130 BoogieDeclarations]: Found specification of procedure strtod
[2021-10-28 23:09:23,147 INFO L130 BoogieDeclarations]: Found specification of procedure strtof
[2021-10-28 23:09:23,147 INFO L130 BoogieDeclarations]: Found specification of procedure strtold
[2021-10-28 23:09:23,147 INFO L130 BoogieDeclarations]: Found specification of procedure strtol
[2021-10-28 23:09:23,147 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul
[2021-10-28 23:09:23,148 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq
[2021-10-28 23:09:23,148 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq
[2021-10-28 23:09:23,148 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll
[2021-10-28 23:09:23,148 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull
[2021-10-28 23:09:23,148 INFO L130 BoogieDeclarations]: Found specification of procedure l64a
[2021-10-28 23:09:23,149 INFO L130 BoogieDeclarations]: Found specification of procedure a64l
[2021-10-28 23:09:23,149 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32
[2021-10-28 23:09:23,149 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64
[2021-10-28 23:09:23,149 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity
[2021-10-28 23:09:23,149 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity
[2021-10-28 23:09:23,149 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity
[2021-10-28 23:09:23,150 INFO L130 BoogieDeclarations]: Found specification of procedure select
[2021-10-28 23:09:23,150 INFO L130 BoogieDeclarations]: Found specification of procedure pselect
[2021-10-28 23:09:23,150 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major
[2021-10-28 23:09:23,150 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor
[2021-10-28 23:09:23,150 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev
[2021-10-28 23:09:23,151 INFO L130 BoogieDeclarations]: Found specification of procedure random
[2021-10-28 23:09:23,151 INFO L130 BoogieDeclarations]: Found specification of procedure srandom
[2021-10-28 23:09:23,151 INFO L130 BoogieDeclarations]: Found specification of procedure initstate
[2021-10-28 23:09:23,151 INFO L130 BoogieDeclarations]: Found specification of procedure setstate
[2021-10-28 23:09:23,151 INFO L130 BoogieDeclarations]: Found specification of procedure random_r
[2021-10-28 23:09:23,151 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r
[2021-10-28 23:09:23,152 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r
[2021-10-28 23:09:23,152 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r
[2021-10-28 23:09:23,152 INFO L130 BoogieDeclarations]: Found specification of procedure rand
[2021-10-28 23:09:23,152 INFO L130 BoogieDeclarations]: Found specification of procedure srand
[2021-10-28 23:09:23,152 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r
[2021-10-28 23:09:23,153 INFO L130 BoogieDeclarations]: Found specification of procedure drand48
[2021-10-28 23:09:23,153 INFO L130 BoogieDeclarations]: Found specification of procedure erand48
[2021-10-28 23:09:23,153 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48
[2021-10-28 23:09:23,153 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48
[2021-10-28 23:09:23,153 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48
[2021-10-28 23:09:23,154 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48
[2021-10-28 23:09:23,154 INFO L130 BoogieDeclarations]: Found specification of procedure srand48
[2021-10-28 23:09:23,154 INFO L130 BoogieDeclarations]: Found specification of procedure seed48
[2021-10-28 23:09:23,154 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48
[2021-10-28 23:09:23,154 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r
[2021-10-28 23:09:23,155 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r
[2021-10-28 23:09:23,155 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r
[2021-10-28 23:09:23,155 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r
[2021-10-28 23:09:23,155 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r
[2021-10-28 23:09:23,155 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r
[2021-10-28 23:09:23,156 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r
[2021-10-28 23:09:23,156 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r
[2021-10-28 23:09:23,156 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r
[2021-10-28 23:09:23,156 INFO L130 BoogieDeclarations]: Found specification of procedure malloc
[2021-10-28 23:09:23,156 INFO L130 BoogieDeclarations]: Found specification of procedure calloc
[2021-10-28 23:09:23,157 INFO L130 BoogieDeclarations]: Found specification of procedure realloc
[2021-10-28 23:09:23,157 INFO L130 BoogieDeclarations]: Found specification of procedure free
[2021-10-28 23:09:23,157 INFO L130 BoogieDeclarations]: Found specification of procedure alloca
[2021-10-28 23:09:23,157 INFO L130 BoogieDeclarations]: Found specification of procedure valloc
[2021-10-28 23:09:23,157 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign
[2021-10-28 23:09:23,158 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc
[2021-10-28 23:09:23,158 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2021-10-28 23:09:23,158 INFO L130 BoogieDeclarations]: Found specification of procedure atexit
[2021-10-28 23:09:23,158 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit
[2021-10-28 23:09:23,158 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit
[2021-10-28 23:09:23,159 INFO L130 BoogieDeclarations]: Found specification of procedure exit
[2021-10-28 23:09:23,159 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit
[2021-10-28 23:09:23,159 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit
[2021-10-28 23:09:23,159 INFO L130 BoogieDeclarations]: Found specification of procedure getenv
[2021-10-28 23:09:23,159 INFO L130 BoogieDeclarations]: Found specification of procedure putenv
[2021-10-28 23:09:23,160 INFO L130 BoogieDeclarations]: Found specification of procedure setenv
[2021-10-28 23:09:23,160 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv
[2021-10-28 23:09:23,160 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv
[2021-10-28 23:09:23,160 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp
[2021-10-28 23:09:23,160 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp
[2021-10-28 23:09:23,160 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps
[2021-10-28 23:09:23,161 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp
[2021-10-28 23:09:23,161 INFO L130 BoogieDeclarations]: Found specification of procedure system
[2021-10-28 23:09:23,161 INFO L130 BoogieDeclarations]: Found specification of procedure realpath
[2021-10-28 23:09:23,161 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch
[2021-10-28 23:09:23,161 INFO L130 BoogieDeclarations]: Found specification of procedure qsort
[2021-10-28 23:09:23,162 INFO L130 BoogieDeclarations]: Found specification of procedure abs
[2021-10-28 23:09:23,162 INFO L130 BoogieDeclarations]: Found specification of procedure labs
[2021-10-28 23:09:23,162 INFO L130 BoogieDeclarations]: Found specification of procedure llabs
[2021-10-28 23:09:23,162 INFO L130 BoogieDeclarations]: Found specification of procedure div
[2021-10-28 23:09:23,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv
[2021-10-28 23:09:23,163 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv
[2021-10-28 23:09:23,163 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt
[2021-10-28 23:09:23,163 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt
[2021-10-28 23:09:23,163 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt
[2021-10-28 23:09:23,163 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt
[2021-10-28 23:09:23,164 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt
[2021-10-28 23:09:23,164 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt
[2021-10-28 23:09:23,164 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r
[2021-10-28 23:09:23,164 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r
[2021-10-28 23:09:23,164 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r
[2021-10-28 23:09:23,165 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r
[2021-10-28 23:09:23,165 INFO L130 BoogieDeclarations]: Found specification of procedure mblen
[2021-10-28 23:09:23,165 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc
[2021-10-28 23:09:23,165 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb
[2021-10-28 23:09:23,165 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs
[2021-10-28 23:09:23,165 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs
[2021-10-28 23:09:23,166 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch
[2021-10-28 23:09:23,166 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt
[2021-10-28 23:09:23,166 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg
[2021-10-28 23:09:23,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2021-10-28 23:09:23,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char
[2021-10-28 23:09:23,167 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2021-10-28 23:09:23,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-10-28 23:09:23,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-10-28 23:09:23,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-10-28 23:09:23,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-10-28 23:09:23,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2021-10-28 23:09:23,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-10-28 23:09:23,704 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-10-28 23:09:23,704 INFO L299 CfgBuilder]: Removed 3 assume(true) statements.
[2021-10-28 23:09:23,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:09:23 BoogieIcfgContainer
[2021-10-28 23:09:23,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-10-28 23:09:23,711 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-10-28 23:09:23,711 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-10-28 23:09:23,718 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-10-28 23:09:23,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:09:22" (1/3) ...
[2021-10-28 23:09:23,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44cfb978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:09:23, skipping insertion in model container
[2021-10-28 23:09:23,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:09:23" (2/3) ...
[2021-10-28 23:09:23,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44cfb978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:09:23, skipping insertion in model container
[2021-10-28 23:09:23,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:09:23" (3/3) ...
[2021-10-28 23:09:23,724 INFO L111 eAbstractionObserver]: Analyzing ICFG reverse_array_alloca_unsafe.i
[2021-10-28 23:09:23,730 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-10-28 23:09:23,731 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations.
[2021-10-28 23:09:23,808 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-10-28 23:09:23,818 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR
[2021-10-28 23:09:23,818 INFO L340 AbstractCegarLoop]: Starting to check reachability of 23 error locations.
[2021-10-28 23:09:23,831 INFO L276 IsEmpty]: Start isEmpty. Operand has 65 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 60 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2021-10-28 23:09:23,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2021-10-28 23:09:23,838 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:09:23,839 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:09:23,839 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 18 more)] ===
[2021-10-28 23:09:23,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:09:23,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1096953401, now seen corresponding path program 1 times
[2021-10-28 23:09:23,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:09:23,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579294364]
[2021-10-28 23:09:23,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:09:23,856 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:09:24,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:09:24,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-10-28 23:09:24,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:09:24,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:09:24,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:09:24,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579294364]
[2021-10-28 23:09:24,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579294364] provided 1 perfect and 0 imperfect interpolant sequences
[2021-10-28 23:09:24,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-28 23:09:24,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2021-10-28 23:09:24,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712444027]
[2021-10-28 23:09:24,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2021-10-28 23:09:24,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:09:24,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-10-28 23:09:24,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2021-10-28 23:09:24,290 INFO L87 Difference]: Start difference. First operand has 65 states, 37 states have (on average 1.8918918918918919) internal successors, (70), 60 states have internal predecessors, (70), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-10-28 23:09:24,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:09:24,743 INFO L93 Difference]: Finished difference Result 125 states and 136 transitions.
[2021-10-28 23:09:24,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2021-10-28 23:09:24,745 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11
[2021-10-28 23:09:24,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:09:24,777 INFO L225 Difference]: With dead ends: 125
[2021-10-28 23:09:24,777 INFO L226 Difference]: Without dead ends: 121
[2021-10-28 23:09:24,781 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2021-10-28 23:09:24,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states.
[2021-10-28 23:09:24,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 65.
[2021-10-28 23:09:24,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 39 states have (on average 1.7692307692307692) internal successors, (69), 61 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-10-28 23:09:24,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions.
[2021-10-28 23:09:24,829 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 11
[2021-10-28 23:09:24,829 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:09:24,830 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions.
[2021-10-28 23:09:24,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-10-28 23:09:24,830 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions.
[2021-10-28 23:09:24,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2021-10-28 23:09:24,831 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:09:24,832 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:09:24,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-10-28 23:09:24,832 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 18 more)] ===
[2021-10-28 23:09:24,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:09:24,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1096953402, now seen corresponding path program 1 times
[2021-10-28 23:09:24,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:09:24,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504095872]
[2021-10-28 23:09:24,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:09:24,834 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:09:24,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:09:24,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-10-28 23:09:24,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:09:24,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:09:24,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:09:24,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504095872]
[2021-10-28 23:09:24,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504095872] provided 1 perfect and 0 imperfect interpolant sequences
[2021-10-28 23:09:24,937 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-28 23:09:24,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-10-28 23:09:24,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328829311]
[2021-10-28 23:09:24,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-10-28 23:09:24,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:09:24,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-10-28 23:09:24,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-10-28 23:09:24,943 INFO L87 Difference]: Start difference. First operand 65 states and 72 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-10-28 23:09:25,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:09:25,058 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions.
[2021-10-28 23:09:25,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-10-28 23:09:25,059 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11
[2021-10-28 23:09:25,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:09:25,062 INFO L225 Difference]: With dead ends: 60
[2021-10-28 23:09:25,062 INFO L226 Difference]: Without dead ends: 60
[2021-10-28 23:09:25,063 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-10-28 23:09:25,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states.
[2021-10-28 23:09:25,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60.
[2021-10-28 23:09:25,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 39 states have (on average 1.6153846153846154) internal successors, (63), 56 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-10-28 23:09:25,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions.
[2021-10-28 23:09:25,082 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 11
[2021-10-28 23:09:25,083 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:09:25,083 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions.
[2021-10-28 23:09:25,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-10-28 23:09:25,083 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions.
[2021-10-28 23:09:25,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2021-10-28 23:09:25,084 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:09:25,084 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:09:25,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-10-28 23:09:25,085 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 18 more)] ===
[2021-10-28 23:09:25,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:09:25,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1096893819, now seen corresponding path program 1 times
[2021-10-28 23:09:25,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:09:25,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404817346]
[2021-10-28 23:09:25,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:09:25,086 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:09:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:09:25,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-10-28 23:09:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:09:25,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:09:25,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:09:25,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404817346]
[2021-10-28 23:09:25,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404817346] provided 1 perfect and 0 imperfect interpolant sequences
[2021-10-28 23:09:25,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-28 23:09:25,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-10-28 23:09:25,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26941492]
[2021-10-28 23:09:25,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-10-28 23:09:25,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:09:25,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-10-28 23:09:25,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2021-10-28 23:09:25,242 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-10-28 23:09:25,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:09:25,376 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions.
[2021-10-28 23:09:25,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-10-28 23:09:25,377 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11
[2021-10-28 23:09:25,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:09:25,383 INFO L225 Difference]: With dead ends: 64
[2021-10-28 23:09:25,383 INFO L226 Difference]: Without dead ends: 64
[2021-10-28 23:09:25,384 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2021-10-28 23:09:25,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states.
[2021-10-28 23:09:25,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 59.
[2021-10-28 23:09:25,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 38 states have (on average 1.631578947368421) internal successors, (62), 55 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-10-28 23:09:25,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions.
[2021-10-28 23:09:25,397 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 11
[2021-10-28 23:09:25,397 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:09:25,399 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions.
[2021-10-28 23:09:25,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-10-28 23:09:25,399 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions.
[2021-10-28 23:09:25,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2021-10-28 23:09:25,400 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:09:25,400 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:09:25,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-10-28 23:09:25,401 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 18 more)] ===
[2021-10-28 23:09:25,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:09:25,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1271599478, now seen corresponding path program 1 times
[2021-10-28 23:09:25,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:09:25,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54194019]
[2021-10-28 23:09:25,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:09:25,403 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:09:25,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:09:25,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-10-28 23:09:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:09:25,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-10-28 23:09:25,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:09:25,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54194019]
[2021-10-28 23:09:25,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54194019] provided 1 perfect and 0 imperfect interpolant sequences
[2021-10-28 23:09:25,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-28 23:09:25,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-10-28 23:09:25,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346435590]
[2021-10-28 23:09:25,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-10-28 23:09:25,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:09:25,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-10-28 23:09:25,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-10-28 23:09:25,541 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-10-28 23:09:25,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:09:25,638 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions.
[2021-10-28 23:09:25,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-10-28 23:09:25,639 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15
[2021-10-28 23:09:25,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:09:25,640 INFO L225 Difference]: With dead ends: 60
[2021-10-28 23:09:25,640 INFO L226 Difference]: Without dead ends: 60
[2021-10-28 23:09:25,640 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-10-28 23:09:25,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states.
[2021-10-28 23:09:25,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60.
[2021-10-28 23:09:25,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 39 states have (on average 1.6153846153846154) internal successors, (63), 56 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-10-28 23:09:25,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions.
[2021-10-28 23:09:25,654 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 15
[2021-10-28 23:09:25,654 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:09:25,654 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions.
[2021-10-28 23:09:25,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-10-28 23:09:25,655 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions.
[2021-10-28 23:09:25,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2021-10-28 23:09:25,655 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:09:25,655 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:09:25,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-10-28 23:09:25,656 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 18 more)] ===
[2021-10-28 23:09:25,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:09:25,657 INFO L85 PathProgramCache]: Analyzing trace with hash -2080946104, now seen corresponding path program 1 times
[2021-10-28 23:09:25,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:09:25,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299532493]
[2021-10-28 23:09:25,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:09:25,659 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:09:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:09:25,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-10-28 23:09:25,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:09:25,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:09:25,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:09:25,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299532493]
[2021-10-28 23:09:25,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299532493] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:09:25,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474670480]
[2021-10-28 23:09:25,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:09:25,774 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:09:25,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fac7ba-0a37-452c-ae38-6508d5e203ac/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:09:25,781 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fac7ba-0a37-452c-ae38-6508d5e203ac/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:09:25,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fac7ba-0a37-452c-ae38-6508d5e203ac/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2021-10-28 23:09:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:09:25,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core
[2021-10-28 23:09:25,913 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:09:26,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:09:26,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474670480] provided 1 perfect and 0 imperfect interpolant sequences
[2021-10-28 23:09:26,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2021-10-28 23:09:26,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8
[2021-10-28 23:09:26,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522558754]
[2021-10-28 23:09:26,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-10-28 23:09:26,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:09:26,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-10-28 23:09:26,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2021-10-28 23:09:26,099 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-10-28 23:09:26,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:09:26,139 INFO L93 Difference]: Finished difference Result 109 states and 118 transitions.
[2021-10-28 23:09:26,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-10-28 23:09:26,140 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15
[2021-10-28 23:09:26,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:09:26,142 INFO L225 Difference]: With dead ends: 109
[2021-10-28 23:09:26,142 INFO L226 Difference]: Without dead ends: 109
[2021-10-28 23:09:26,142 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2021-10-28 23:09:26,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states.
[2021-10-28 23:09:26,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 66.
[2021-10-28 23:09:26,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 45 states have (on average 1.5333333333333334) internal successors, (69), 62 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-10-28 23:09:26,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions.
[2021-10-28 23:09:26,163 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 15
[2021-10-28 23:09:26,163 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:09:26,164 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions.
[2021-10-28 23:09:26,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-10-28 23:09:26,164 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions.
[2021-10-28 23:09:26,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2021-10-28 23:09:26,165 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:09:26,165 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:09:26,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fac7ba-0a37-452c-ae38-6508d5e203ac/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2021-10-28 23:09:26,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fac7ba-0a37-452c-ae38-6508d5e203ac/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:09:26,379 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 18 more)] ===
[2021-10-28 23:09:26,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:09:26,379 INFO L85 PathProgramCache]: Analyzing trace with hash -591541108, now seen corresponding path program 1 times
[2021-10-28 23:09:26,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:09:26,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652858332]
[2021-10-28 23:09:26,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:09:26,380 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:09:26,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:09:26,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-10-28 23:09:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:09:26,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:09:26,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:09:26,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652858332]
[2021-10-28 23:09:26,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652858332] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:09:26,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455770001]
[2021-10-28 23:09:26,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:09:26,544 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:09:26,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fac7ba-0a37-452c-ae38-6508d5e203ac/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:09:26,548 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fac7ba-0a37-452c-ae38-6508d5e203ac/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:09:26,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fac7ba-0a37-452c-ae38-6508d5e203ac/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2021-10-28 23:09:26,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:09:26,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 14 conjunts are in the unsatisfiable core
[2021-10-28 23:09:26,681 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:09:26,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11
[2021-10-28 23:09:26,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:09:26,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455770001] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:09:26,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-28 23:09:26,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 9
[2021-10-28 23:09:26,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989789777]
[2021-10-28 23:09:26,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2021-10-28 23:09:26,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:09:26,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-10-28 23:09:26,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90
[2021-10-28 23:09:26,928 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-10-28 23:09:27,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:09:27,270 INFO L93 Difference]: Finished difference Result 123 states and 133 transitions.
[2021-10-28 23:09:27,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2021-10-28 23:09:27,271 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15
[2021-10-28 23:09:27,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:09:27,272 INFO L225 Difference]: With dead ends: 123
[2021-10-28 23:09:27,272 INFO L226 Difference]: Without dead ends: 123
[2021-10-28 23:09:27,272 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156
[2021-10-28 23:09:27,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states.
[2021-10-28 23:09:27,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 71.
[2021-10-28 23:09:27,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 50 states have (on average 1.48) internal successors, (74), 67 states have internal predecessors, (74), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-10-28 23:09:27,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions.
[2021-10-28 23:09:27,275 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 15
[2021-10-28 23:09:27,276 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:09:27,276 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 77 transitions.
[2021-10-28 23:09:27,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-10-28 23:09:27,276 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions.
[2021-10-28 23:09:27,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2021-10-28 23:09:27,277 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:09:27,277 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:09:27,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fac7ba-0a37-452c-ae38-6508d5e203ac/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2021-10-28 23:09:27,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fac7ba-0a37-452c-ae38-6508d5e203ac/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:09:27,489 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 18 more)] ===
[2021-10-28 23:09:27,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:09:27,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1400887734, now seen corresponding path program 1 times
[2021-10-28 23:09:27,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:09:27,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502272725]
[2021-10-28 23:09:27,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:09:27,490 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:09:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:09:27,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-10-28 23:09:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:09:27,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:09:27,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:09:27,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502272725]
[2021-10-28 23:09:27,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502272725] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:09:27,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526141774]
[2021-10-28 23:09:27,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:09:27,590 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:09:27,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fac7ba-0a37-452c-ae38-6508d5e203ac/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:09:27,591 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fac7ba-0a37-452c-ae38-6508d5e203ac/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:09:27,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fac7ba-0a37-452c-ae38-6508d5e203ac/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2021-10-28 23:09:27,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:09:27,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjunts are in the unsatisfiable core
[2021-10-28 23:09:27,706 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:09:27,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7
[2021-10-28 23:09:27,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:09:27,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526141774] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:09:27,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-28 23:09:27,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7
[2021-10-28 23:09:27,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96321646]
[2021-10-28 23:09:27,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2021-10-28 23:09:27,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:09:27,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2021-10-28 23:09:27,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2021-10-28 23:09:27,844 INFO L87 Difference]: Start difference. First operand 71 states and 77 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-10-28 23:09:28,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:09:28,081 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions.
[2021-10-28 23:09:28,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-10-28 23:09:28,081 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15
[2021-10-28 23:09:28,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:09:28,082 INFO L225 Difference]: With dead ends: 74
[2021-10-28 23:09:28,082 INFO L226 Difference]: Without dead ends: 74
[2021-10-28 23:09:28,083 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2021-10-28 23:09:28,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states.
[2021-10-28 23:09:28,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69.
[2021-10-28 23:09:28,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 49 states have (on average 1.469387755102041) internal successors, (72), 65 states have internal predecessors, (72), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-10-28 23:09:28,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions.
[2021-10-28 23:09:28,086 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 15
[2021-10-28 23:09:28,086 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:09:28,087 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions.
[2021-10-28 23:09:28,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-10-28 23:09:28,087 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions.
[2021-10-28 23:09:28,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2021-10-28 23:09:28,088 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:09:28,088 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:09:28,125 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fac7ba-0a37-452c-ae38-6508d5e203ac/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2021-10-28 23:09:28,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fac7ba-0a37-452c-ae38-6508d5e203ac/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:09:28,308 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 18 more)] ===
[2021-10-28 23:09:28,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:09:28,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1665502603, now seen corresponding path program 1 times
[2021-10-28 23:09:28,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:09:28,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812022862]
[2021-10-28 23:09:28,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:09:28,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:09:28,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:09:28,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-10-28 23:09:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:09:28,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-10-28 23:09:28,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:09:28,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812022862]
[2021-10-28 23:09:28,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812022862] provided 1 perfect and 0 imperfect interpolant sequences
[2021-10-28 23:09:28,356 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-28 23:09:28,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-10-28 23:09:28,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737711503]
[2021-10-28 23:09:28,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-10-28 23:09:28,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:09:28,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-10-28 23:09:28,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2021-10-28 23:09:28,358 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-10-28 23:09:28,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:09:28,462 INFO L93 Difference]: Finished difference Result 80 states and 87 transitions.
[2021-10-28 23:09:28,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-10-28 23:09:28,462 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17
[2021-10-28 23:09:28,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:09:28,463 INFO L225 Difference]: With dead ends: 80
[2021-10-28 23:09:28,464 INFO L226 Difference]: Without dead ends: 80
[2021-10-28 23:09:28,464 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2021-10-28 23:09:28,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states.
[2021-10-28 23:09:28,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 70.
[2021-10-28 23:09:28,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 50 states have (on average 1.46) internal successors, (73), 66 states have internal predecessors, (73), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-10-28 23:09:28,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions.
[2021-10-28 23:09:28,467 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 17
[2021-10-28 23:09:28,468 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:09:28,468 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions.
[2021-10-28 23:09:28,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-10-28 23:09:28,468 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions.
[2021-10-28 23:09:28,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2021-10-28 23:09:28,469 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:09:28,469 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:09:28,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2021-10-28 23:09:28,469 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 18 more)] ===
[2021-10-28 23:09:28,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:09:28,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1665502644, now seen corresponding path program 1 times
[2021-10-28 23:09:28,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:09:28,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889671734]
[2021-10-28 23:09:28,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:09:28,471 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:09:28,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:09:28,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-10-28 23:09:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:09:28,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:09:28,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-28 23:09:28,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889671734]
[2021-10-28 23:09:28,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889671734] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:09:28,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751950350]
[2021-10-28 23:09:28,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:09:28,561 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:09:28,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fac7ba-0a37-452c-ae38-6508d5e203ac/bin/uautomizer-GMMbpWq8iD/z3
[2021-10-28 23:09:28,562 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fac7ba-0a37-452c-ae38-6508d5e203ac/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-28 23:09:28,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fac7ba-0a37-452c-ae38-6508d5e203ac/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2021-10-28 23:09:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-28 23:09:28,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-10-28 23:09:28,740 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-10-28 23:09:28,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-10-28 23:09:28,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751950350] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-28 23:09:28,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-28 23:09:28,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 9
[2021-10-28 23:09:28,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817148853]
[2021-10-28 23:09:28,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2021-10-28 23:09:28,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-28 23:09:28,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-10-28 23:09:28,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90
[2021-10-28 23:09:28,906 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-10-28 23:09:29,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-10-28 23:09:29,093 INFO L93 Difference]: Finished difference Result 81 states and 88 transitions.
[2021-10-28 23:09:29,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2021-10-28 23:09:29,093 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17
[2021-10-28 23:09:29,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-10-28 23:09:29,094 INFO L225 Difference]: With dead ends: 81
[2021-10-28 23:09:29,094 INFO L226 Difference]: Without dead ends: 81
[2021-10-28 23:09:29,094 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132
[2021-10-28 23:09:29,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states.
[2021-10-28 23:09:29,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75.
[2021-10-28 23:09:29,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 55 states have (on average 1.4363636363636363) internal successors, (79), 71 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-10-28 23:09:29,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 82 transitions.
[2021-10-28 23:09:29,097 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 82 transitions. Word has length 17
[2021-10-28 23:09:29,097 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-10-28 23:09:29,097 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 82 transitions.
[2021-10-28 23:09:29,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-10-28 23:09:29,098 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 82 transitions.
[2021-10-28 23:09:29,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2021-10-28 23:09:29,099 INFO L505 BasicCegarLoop]: Found error trace
[2021-10-28 23:09:29,099 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:09:29,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fac7ba-0a37-452c-ae38-6508d5e203ac/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2021-10-28 23:09:29,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fac7ba-0a37-452c-ae38-6508d5e203ac/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-28 23:09:29,308 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 18 more)] ===
[2021-10-28 23:09:29,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-10-28 23:09:29,309 INFO L85 PathProgramCache]: Analyzing trace with hash 94437838, now seen corresponding path program 1 times
[2021-10-28 23:09:29,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-28 23:09:29,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873194323]
[2021-10-28 23:09:29,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-28 23:09:29,309 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-28 23:09:29,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-10-28 23:09:29,322 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2021-10-28 23:09:29,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2021-10-28 23:09:29,351 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2021-10-28 23:09:29,351 INFO L627 BasicCegarLoop]: Counterexample is feasible
[2021-10-28 23:09:29,352 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr9REQUIRES_VIOLATION
[2021-10-28 23:09:29,354 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION
[2021-10-28 23:09:29,354 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION
[2021-10-28 23:09:29,354 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION
[2021-10-28 23:09:29,355 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION
[2021-10-28 23:09:29,355 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION
[2021-10-28 23:09:29,355 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION
[2021-10-28 23:09:29,355 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION
[2021-10-28 23:09:29,355 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION
[2021-10-28 23:09:29,355 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION
[2021-10-28 23:09:29,356 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION
[2021-10-28 23:09:29,356 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION
[2021-10-28 23:09:29,356 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION
[2021-10-28 23:09:29,356 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION
[2021-10-28 23:09:29,356 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION
[2021-10-28 23:09:29,356 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION
[2021-10-28 23:09:29,356 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION
[2021-10-28 23:09:29,357 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION
[2021-10-28 23:09:29,357 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION
[2021-10-28 23:09:29,357 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION
[2021-10-28 23:09:29,357 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION
[2021-10-28 23:09:29,357 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION
[2021-10-28 23:09:29,357 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22ENSURES_VIOLATIONMEMORY_LEAK
[2021-10-28 23:09:29,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2021-10-28 23:09:29,362 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-10-28 23:09:29,367 INFO L179 ceAbstractionStarter]: Computing trace abstraction results
[2021-10-28 23:09:29,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:09:29 BoogieIcfgContainer
[2021-10-28 23:09:29,394 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-10-28 23:09:29,395 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2021-10-28 23:09:29,395 INFO L271 PluginConnector]: Initializing Witness Printer...
[2021-10-28 23:09:29,395 INFO L275 PluginConnector]: Witness Printer initialized
[2021-10-28 23:09:29,396 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:09:23" (3/4) ...
[2021-10-28 23:09:29,398 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample
[2021-10-28 23:09:29,448 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fac7ba-0a37-452c-ae38-6508d5e203ac/bin/uautomizer-GMMbpWq8iD/witness.graphml
[2021-10-28 23:09:29,448 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2021-10-28 23:09:29,450 INFO L168 Benchmark]: Toolchain (without parser) took 6921.32 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 118.6 MB in the beginning and 94.4 MB in the end (delta: 24.2 MB). Peak memory consumption was 55.0 MB. Max. memory is 16.1 GB.
[2021-10-28 23:09:29,450 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 92.3 MB. Free memory is still 48.7 MB. There was no memory consumed. Max. memory is 16.1 GB.
[2021-10-28 23:09:29,451 INFO L168 Benchmark]: CACSL2BoogieTranslator took 472.19 ms. Allocated memory is still 153.1 MB. Free memory was 118.6 MB in the beginning and 120.9 MB in the end (delta: -2.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB.
[2021-10-28 23:09:29,451 INFO L168 Benchmark]: Boogie Preprocessor took 51.70 ms. Allocated memory is still 153.1 MB. Free memory was 120.9 MB in the beginning and 118.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
[2021-10-28 23:09:29,451 INFO L168 Benchmark]: RCFGBuilder took 639.63 ms. Allocated memory is still 153.1 MB. Free memory was 118.4 MB in the beginning and 97.4 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB.
[2021-10-28 23:09:29,452 INFO L168 Benchmark]: TraceAbstraction took 5683.51 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 97.0 MB in the beginning and 96.5 MB in the end (delta: 480.6 kB). Peak memory consumption was 34.8 MB. Max. memory is 16.1 GB.
[2021-10-28 23:09:29,452 INFO L168 Benchmark]: Witness Printer took 53.64 ms. Allocated memory is still 184.5 MB. Free memory was 96.5 MB in the beginning and 94.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
[2021-10-28 23:09:29,454 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.34 ms. Allocated memory is still 92.3 MB. Free memory is still 48.7 MB. There was no memory consumed. Max. memory is 16.1 GB.
* CACSL2BoogieTranslator took 472.19 ms. Allocated memory is still 153.1 MB. Free memory was 118.6 MB in the beginning and 120.9 MB in the end (delta: -2.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB.
* Boogie Preprocessor took 51.70 ms. Allocated memory is still 153.1 MB. Free memory was 120.9 MB in the beginning and 118.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
* RCFGBuilder took 639.63 ms. Allocated memory is still 153.1 MB. Free memory was 118.4 MB in the beginning and 97.4 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB.
* TraceAbstraction took 5683.51 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 97.0 MB in the beginning and 96.5 MB in the end (delta: 480.6 kB). Peak memory consumption was 34.8 MB. Max. memory is 16.1 GB.
* Witness Printer took 53.64 ms. Allocated memory is still 184.5 MB. Free memory was 96.5 MB in the beginning and 94.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: ErrorAutomatonStatistics
NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
- CounterExampleResult [Line: 529]: pointer dereference may fail
pointer dereference may fail
We found a FailurePath:
[L515] int i, j, tmp;
[L516] int length = __VERIFIER_nondet_int();
[L517] COND TRUE length < 1
[L517] length = 1
VAL [length=1]
[L518] COND FALSE !(length % 2 == 0)
VAL [length=1]
[L519] int *arr = __builtin_alloca (length*sizeof(int));
[L521] int i = 0;
VAL [__builtin_alloca (length*sizeof(int))={2:0}, arr={2:0}, i=0, length=1]
[L521] COND TRUE i < length
[L523] arr[i] = __VERIFIER_nondet_int()
VAL [__builtin_alloca (length*sizeof(int))={2:0}, __VERIFIER_nondet_int()=-1, arr={2:0}, i=0, length=1]
[L521] i++
VAL [__builtin_alloca (length*sizeof(int))={2:0}, arr={2:0}, i=1, length=1]
[L521] COND FALSE !(i < length)
VAL [__builtin_alloca (length*sizeof(int))={2:0}, arr={2:0}, i=1, length=1]
[L526] i=0
VAL [__builtin_alloca (length*sizeof(int))={2:0}, arr={2:0}, i=0, i=1, length=1]
[L526] COND TRUE i<length
VAL [__builtin_alloca (length*sizeof(int))={2:0}, arr={2:0}, i=0, i=1, length=1]
[L527] EXPR arr[i]
VAL [__builtin_alloca (length*sizeof(int))={2:0}, arr={2:0}, arr[i]=-1, i=0, i=1, length=1]
[L527] COND FALSE !(arr[i] == '\0')
[L526] i++
VAL [__builtin_alloca (length*sizeof(int))={2:0}, arr={2:0}, i=1, i=1, length=1]
[L526] COND FALSE !(i<length)
VAL [__builtin_alloca (length*sizeof(int))={2:0}, arr={2:0}, i=1, i=1, length=1]
[L529] arr[length / 2 + 1] = '\0'
- UnprovableResult [Line: 523]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 523]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 527]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 527]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 527]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 527]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 527]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 527]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 529]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 532]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 532]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 532]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 532]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 533]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 535]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 514]: Unable to prove that all allocated memory was freed
Unable to prove that all allocated memory was freed
Reason: Not analyzed.
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 8 procedures, 80 locations, 23 error locations. Started 1 CEGAR loops. OverallTime: 5.5s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 504 SDtfs, 873 SDslu, 707 SDs, 0 SdLazy, 1403 SolverSat, 57 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 125 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=9, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 177 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 210 NumberOfCodeBlocks, 210 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 176 ConstructedInterpolants, 0 QuantifiedInterpolants, 1032 SizeOfPredicates, 10 NumberOfNonLiveVariables, 260 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 13 InterpolantComputations, 6 PerfectInterpolantSequences, 7/17 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
RESULT: Ultimate proved your program to be incorrect!
[2021-10-28 23:09:29,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25fac7ba-0a37-452c-ae38-6508d5e203ac/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...