./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/rec_strlen-alloca-1.i --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for memory safety (deref-memtrack)
Using default analysis
Version 63182f13
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd913c58-c84e-47a2-a04f-577b039e0182/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd913c58-c84e-47a2-a04f-577b039e0182/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd913c58-c84e-47a2-a04f-577b039e0182/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd913c58-c84e-47a2-a04f-577b039e0182/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/rec_strlen-alloca-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd913c58-c84e-47a2-a04f-577b039e0182/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd913c58-c84e-47a2-a04f-577b039e0182/bin/uautomizer-YU5uOKAj3y --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 60396cce4fa0936fb91e88a54a287214045469c9d9b3d447954681e0a5aabbc0
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-63182f1
[2021-11-13 17:32:48,161 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-11-13 17:32:48,166 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-11-13 17:32:48,237 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-11-13 17:32:48,238 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-11-13 17:32:48,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-11-13 17:32:48,247 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-11-13 17:32:48,252 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-11-13 17:32:48,255 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-11-13 17:32:48,263 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-11-13 17:32:48,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-11-13 17:32:48,267 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-11-13 17:32:48,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-11-13 17:32:48,271 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-11-13 17:32:48,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-11-13 17:32:48,276 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-11-13 17:32:48,277 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-11-13 17:32:48,279 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-11-13 17:32:48,281 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-11-13 17:32:48,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-11-13 17:32:48,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-11-13 17:32:48,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-11-13 17:32:48,289 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-11-13 17:32:48,291 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-11-13 17:32:48,295 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-11-13 17:32:48,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-11-13 17:32:48,296 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-11-13 17:32:48,297 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-11-13 17:32:48,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-11-13 17:32:48,300 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-11-13 17:32:48,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-11-13 17:32:48,302 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-11-13 17:32:48,303 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-11-13 17:32:48,304 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-11-13 17:32:48,305 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-11-13 17:32:48,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-11-13 17:32:48,307 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-11-13 17:32:48,307 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-11-13 17:32:48,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-11-13 17:32:48,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-11-13 17:32:48,310 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-11-13 17:32:48,311 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd913c58-c84e-47a2-a04f-577b039e0182/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf
[2021-11-13 17:32:48,346 INFO L113 SettingsManager]: Loading preferences was successful
[2021-11-13 17:32:48,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-11-13 17:32:48,351 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-11-13 17:32:48,351 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-11-13 17:32:48,352 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-11-13 17:32:48,353 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-11-13 17:32:48,354 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-11-13 17:32:48,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-11-13 17:32:48,355 INFO L138 SettingsManager]: * Use SBE=true
[2021-11-13 17:32:48,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-11-13 17:32:48,357 INFO L138 SettingsManager]: * sizeof long=4
[2021-11-13 17:32:48,357 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false
[2021-11-13 17:32:48,358 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-11-13 17:32:48,358 INFO L138 SettingsManager]: * sizeof POINTER=4
[2021-11-13 17:32:48,358 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-11-13 17:32:48,358 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2021-11-13 17:32:48,359 INFO L138 SettingsManager]: * Bitprecise bitfields=true
[2021-11-13 17:32:48,359 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2021-11-13 17:32:48,359 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-11-13 17:32:48,360 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2021-11-13 17:32:48,360 INFO L138 SettingsManager]: * sizeof long double=12
[2021-11-13 17:32:48,360 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-11-13 17:32:48,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-11-13 17:32:48,361 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-11-13 17:32:48,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-11-13 17:32:48,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 17:32:48,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-11-13 17:32:48,362 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-11-13 17:32:48,362 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-11-13 17:32:48,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-11-13 17:32:48,363 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-11-13 17:32:48,364 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_cd913c58-c84e-47a2-a04f-577b039e0182/bin/uautomizer-YU5uOKAj3y/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd913c58-c84e-47a2-a04f-577b039e0182/bin/uautomizer-YU5uOKAj3y
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60396cce4fa0936fb91e88a54a287214045469c9d9b3d447954681e0a5aabbc0
[2021-11-13 17:32:48,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-11-13 17:32:48,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-11-13 17:32:48,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-11-13 17:32:48,882 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-11-13 17:32:48,884 INFO L275 PluginConnector]: CDTParser initialized
[2021-11-13 17:32:48,886 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd913c58-c84e-47a2-a04f-577b039e0182/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/array-memsafety/rec_strlen-alloca-1.i
[2021-11-13 17:32:48,973 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd913c58-c84e-47a2-a04f-577b039e0182/bin/uautomizer-YU5uOKAj3y/data/efcaf0a9b/99d43c0314194d679048d3db3e1a7051/FLAG2bc1f9b99
[2021-11-13 17:32:49,672 INFO L306 CDTParser]: Found 1 translation units.
[2021-11-13 17:32:49,679 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd913c58-c84e-47a2-a04f-577b039e0182/sv-benchmarks/c/array-memsafety/rec_strlen-alloca-1.i
[2021-11-13 17:32:49,698 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd913c58-c84e-47a2-a04f-577b039e0182/bin/uautomizer-YU5uOKAj3y/data/efcaf0a9b/99d43c0314194d679048d3db3e1a7051/FLAG2bc1f9b99
[2021-11-13 17:32:49,871 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd913c58-c84e-47a2-a04f-577b039e0182/bin/uautomizer-YU5uOKAj3y/data/efcaf0a9b/99d43c0314194d679048d3db3e1a7051
[2021-11-13 17:32:49,876 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-11-13 17:32:49,879 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements.
[2021-11-13 17:32:49,884 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-11-13 17:32:49,884 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-11-13 17:32:49,888 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-11-13 17:32:49,889 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:32:49" (1/1) ...
[2021-11-13 17:32:49,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e0d9a51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:49, skipping insertion in model container
[2021-11-13 17:32:49,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:32:49" (1/1) ...
[2021-11-13 17:32:49,900 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-11-13 17:32:49,974 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-11-13 17:32:50,396 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 17:32:50,406 INFO L203 MainTranslator]: Completed pre-run
[2021-11-13 17:32:50,451 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 17:32:50,489 INFO L208 MainTranslator]: Completed translation
[2021-11-13 17:32:50,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:50 WrapperNode
[2021-11-13 17:32:50,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-11-13 17:32:50,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-11-13 17:32:50,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-11-13 17:32:50,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-11-13 17:32:50,506 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:50" (1/1) ...
[2021-11-13 17:32:50,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:50" (1/1) ...
[2021-11-13 17:32:50,523 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:50" (1/1) ...
[2021-11-13 17:32:50,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:50" (1/1) ...
[2021-11-13 17:32:50,541 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:50" (1/1) ...
[2021-11-13 17:32:50,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:50" (1/1) ...
[2021-11-13 17:32:50,549 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:50" (1/1) ...
[2021-11-13 17:32:50,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-11-13 17:32:50,558 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-11-13 17:32:50,558 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-11-13 17:32:50,558 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-11-13 17:32:50,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:50" (1/1) ...
[2021-11-13 17:32:50,569 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 17:32:50,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd913c58-c84e-47a2-a04f-577b039e0182/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 17:32:50,598 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd913c58-c84e-47a2-a04f-577b039e0182/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-11-13 17:32:50,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd913c58-c84e-47a2-a04f-577b039e0182/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-11-13 17:32:50,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2021-11-13 17:32:50,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-11-13 17:32:50,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32
[2021-11-13 17:32:50,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64
[2021-11-13 17:32:50,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity
[2021-11-13 17:32:50,646 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity
[2021-11-13 17:32:50,646 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity
[2021-11-13 17:32:50,646 INFO L138 BoogieDeclarations]: Found implementation of procedure strlen_rec
[2021-11-13 17:32:50,646 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2021-11-13 17:32:50,646 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max
[2021-11-13 17:32:50,647 INFO L130 BoogieDeclarations]: Found specification of procedure atof
[2021-11-13 17:32:50,647 INFO L130 BoogieDeclarations]: Found specification of procedure atoi
[2021-11-13 17:32:50,647 INFO L130 BoogieDeclarations]: Found specification of procedure atol
[2021-11-13 17:32:50,647 INFO L130 BoogieDeclarations]: Found specification of procedure atoll
[2021-11-13 17:32:50,647 INFO L130 BoogieDeclarations]: Found specification of procedure strtod
[2021-11-13 17:32:50,647 INFO L130 BoogieDeclarations]: Found specification of procedure strtof
[2021-11-13 17:32:50,648 INFO L130 BoogieDeclarations]: Found specification of procedure strtold
[2021-11-13 17:32:50,648 INFO L130 BoogieDeclarations]: Found specification of procedure strtol
[2021-11-13 17:32:50,648 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul
[2021-11-13 17:32:50,648 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq
[2021-11-13 17:32:50,648 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq
[2021-11-13 17:32:50,648 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll
[2021-11-13 17:32:50,649 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull
[2021-11-13 17:32:50,649 INFO L130 BoogieDeclarations]: Found specification of procedure l64a
[2021-11-13 17:32:50,649 INFO L130 BoogieDeclarations]: Found specification of procedure a64l
[2021-11-13 17:32:50,649 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32
[2021-11-13 17:32:50,649 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64
[2021-11-13 17:32:50,649 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity
[2021-11-13 17:32:50,650 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity
[2021-11-13 17:32:50,650 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity
[2021-11-13 17:32:50,650 INFO L130 BoogieDeclarations]: Found specification of procedure select
[2021-11-13 17:32:50,650 INFO L130 BoogieDeclarations]: Found specification of procedure pselect
[2021-11-13 17:32:50,650 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major
[2021-11-13 17:32:50,650 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor
[2021-11-13 17:32:50,651 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev
[2021-11-13 17:32:50,651 INFO L130 BoogieDeclarations]: Found specification of procedure random
[2021-11-13 17:32:50,651 INFO L130 BoogieDeclarations]: Found specification of procedure srandom
[2021-11-13 17:32:50,651 INFO L130 BoogieDeclarations]: Found specification of procedure initstate
[2021-11-13 17:32:50,651 INFO L130 BoogieDeclarations]: Found specification of procedure setstate
[2021-11-13 17:32:50,651 INFO L130 BoogieDeclarations]: Found specification of procedure random_r
[2021-11-13 17:32:50,652 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r
[2021-11-13 17:32:50,652 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r
[2021-11-13 17:32:50,652 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r
[2021-11-13 17:32:50,652 INFO L130 BoogieDeclarations]: Found specification of procedure rand
[2021-11-13 17:32:50,652 INFO L130 BoogieDeclarations]: Found specification of procedure srand
[2021-11-13 17:32:50,652 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r
[2021-11-13 17:32:50,652 INFO L130 BoogieDeclarations]: Found specification of procedure drand48
[2021-11-13 17:32:50,653 INFO L130 BoogieDeclarations]: Found specification of procedure erand48
[2021-11-13 17:32:50,653 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48
[2021-11-13 17:32:50,653 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48
[2021-11-13 17:32:50,653 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48
[2021-11-13 17:32:50,653 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48
[2021-11-13 17:32:50,653 INFO L130 BoogieDeclarations]: Found specification of procedure srand48
[2021-11-13 17:32:50,654 INFO L130 BoogieDeclarations]: Found specification of procedure seed48
[2021-11-13 17:32:50,654 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48
[2021-11-13 17:32:50,654 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r
[2021-11-13 17:32:50,654 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r
[2021-11-13 17:32:50,654 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r
[2021-11-13 17:32:50,654 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r
[2021-11-13 17:32:50,655 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r
[2021-11-13 17:32:50,655 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r
[2021-11-13 17:32:50,655 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r
[2021-11-13 17:32:50,655 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r
[2021-11-13 17:32:50,655 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r
[2021-11-13 17:32:50,656 INFO L130 BoogieDeclarations]: Found specification of procedure malloc
[2021-11-13 17:32:50,656 INFO L130 BoogieDeclarations]: Found specification of procedure calloc
[2021-11-13 17:32:50,656 INFO L130 BoogieDeclarations]: Found specification of procedure realloc
[2021-11-13 17:32:50,656 INFO L130 BoogieDeclarations]: Found specification of procedure free
[2021-11-13 17:32:50,656 INFO L130 BoogieDeclarations]: Found specification of procedure alloca
[2021-11-13 17:32:50,656 INFO L130 BoogieDeclarations]: Found specification of procedure valloc
[2021-11-13 17:32:50,657 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign
[2021-11-13 17:32:50,657 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc
[2021-11-13 17:32:50,657 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2021-11-13 17:32:50,657 INFO L130 BoogieDeclarations]: Found specification of procedure atexit
[2021-11-13 17:32:50,657 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit
[2021-11-13 17:32:50,657 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit
[2021-11-13 17:32:50,658 INFO L130 BoogieDeclarations]: Found specification of procedure exit
[2021-11-13 17:32:50,658 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit
[2021-11-13 17:32:50,658 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit
[2021-11-13 17:32:50,658 INFO L130 BoogieDeclarations]: Found specification of procedure getenv
[2021-11-13 17:32:50,658 INFO L130 BoogieDeclarations]: Found specification of procedure putenv
[2021-11-13 17:32:50,658 INFO L130 BoogieDeclarations]: Found specification of procedure setenv
[2021-11-13 17:32:50,659 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv
[2021-11-13 17:32:50,659 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv
[2021-11-13 17:32:50,659 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp
[2021-11-13 17:32:50,659 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp
[2021-11-13 17:32:50,659 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps
[2021-11-13 17:32:50,660 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp
[2021-11-13 17:32:50,660 INFO L130 BoogieDeclarations]: Found specification of procedure system
[2021-11-13 17:32:50,660 INFO L130 BoogieDeclarations]: Found specification of procedure realpath
[2021-11-13 17:32:50,660 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch
[2021-11-13 17:32:50,660 INFO L130 BoogieDeclarations]: Found specification of procedure qsort
[2021-11-13 17:32:50,661 INFO L130 BoogieDeclarations]: Found specification of procedure abs
[2021-11-13 17:32:50,661 INFO L130 BoogieDeclarations]: Found specification of procedure labs
[2021-11-13 17:32:50,661 INFO L130 BoogieDeclarations]: Found specification of procedure llabs
[2021-11-13 17:32:50,661 INFO L130 BoogieDeclarations]: Found specification of procedure div
[2021-11-13 17:32:50,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv
[2021-11-13 17:32:50,661 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv
[2021-11-13 17:32:50,662 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt
[2021-11-13 17:32:50,662 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt
[2021-11-13 17:32:50,662 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt
[2021-11-13 17:32:50,662 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt
[2021-11-13 17:32:50,662 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt
[2021-11-13 17:32:50,663 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt
[2021-11-13 17:32:50,663 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r
[2021-11-13 17:32:50,663 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r
[2021-11-13 17:32:50,663 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r
[2021-11-13 17:32:50,663 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r
[2021-11-13 17:32:50,664 INFO L130 BoogieDeclarations]: Found specification of procedure mblen
[2021-11-13 17:32:50,664 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc
[2021-11-13 17:32:50,665 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb
[2021-11-13 17:32:50,665 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs
[2021-11-13 17:32:50,665 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs
[2021-11-13 17:32:50,665 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch
[2021-11-13 17:32:50,666 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt
[2021-11-13 17:32:50,666 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg
[2021-11-13 17:32:50,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2021-11-13 17:32:50,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char
[2021-11-13 17:32:50,666 INFO L130 BoogieDeclarations]: Found specification of procedure strlen_rec
[2021-11-13 17:32:50,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-11-13 17:32:50,667 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2021-11-13 17:32:50,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-11-13 17:32:50,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-11-13 17:32:50,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-11-13 17:32:50,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2021-11-13 17:32:50,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-11-13 17:32:51,255 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-11-13 17:32:51,255 INFO L299 CfgBuilder]: Removed 1 assume(true) statements.
[2021-11-13 17:32:51,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:32:51 BoogieIcfgContainer
[2021-11-13 17:32:51,258 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-11-13 17:32:51,261 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-11-13 17:32:51,261 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-11-13 17:32:51,265 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-11-13 17:32:51,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:32:49" (1/3) ...
[2021-11-13 17:32:51,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6700fd79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:32:51, skipping insertion in model container
[2021-11-13 17:32:51,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:32:50" (2/3) ...
[2021-11-13 17:32:51,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6700fd79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:32:51, skipping insertion in model container
[2021-11-13 17:32:51,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:32:51" (3/3) ...
[2021-11-13 17:32:51,270 INFO L111 eAbstractionObserver]: Analyzing ICFG rec_strlen-alloca-1.i
[2021-11-13 17:32:51,276 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-11-13 17:32:51,277 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations.
[2021-11-13 17:32:51,335 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-11-13 17:32:51,344 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
[2021-11-13 17:32:51,344 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations.
[2021-11-13 17:32:51,362 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 25 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2021-11-13 17:32:51,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2021-11-13 17:32:51,372 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:32:51,373 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:32:51,374 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr2REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 2 more)] ===
[2021-11-13 17:32:51,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:32:51,381 INFO L85 PathProgramCache]: Analyzing trace with hash -2117754822, now seen corresponding path program 1 times
[2021-11-13 17:32:51,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:32:51,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567810476]
[2021-11-13 17:32:51,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:32:51,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:32:51,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:51,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-11-13 17:32:51,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:51,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:32:51,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:32:51,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567810476]
[2021-11-13 17:32:51,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567810476] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:32:51,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 17:32:51,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-13 17:32:51,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128206733]
[2021-11-13 17:32:51,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:32:51,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-13 17:32:51,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:32:51,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-13 17:32:51,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-11-13 17:32:51,677 INFO L87 Difference]: Start difference. First operand has 33 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 25 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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)
[2021-11-13 17:32:51,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:32:51,785 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions.
[2021-11-13 17:32:51,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-11-13 17:32:51,788 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 10
[2021-11-13 17:32:51,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:32:51,797 INFO L225 Difference]: With dead ends: 31
[2021-11-13 17:32:51,798 INFO L226 Difference]: Without dead ends: 28
[2021-11-13 17:32:51,800 INFO L932 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
[2021-11-13 17:32:51,805 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 18 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.68ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75.77ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:32:51,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 31 Invalid, 49 Unknown, 0 Unchecked, 3.68ms Time], IncrementalHoareTripleChecker [5 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 75.77ms Time]
[2021-11-13 17:32:51,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states.
[2021-11-13 17:32:51,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28.
[2021-11-13 17:32:51,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 17 states have (on average 1.411764705882353) internal successors, (24), 21 states have internal predecessors, (24), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2021-11-13 17:32:51,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions.
[2021-11-13 17:32:51,880 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 10
[2021-11-13 17:32:51,880 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:32:51,880 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions.
[2021-11-13 17:32:51,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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)
[2021-11-13 17:32:51,881 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions.
[2021-11-13 17:32:51,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2021-11-13 17:32:51,882 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:32:51,882 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:32:51,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-11-13 17:32:51,883 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 2 more)] ===
[2021-11-13 17:32:51,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:32:51,884 INFO L85 PathProgramCache]: Analyzing trace with hash -2117754821, now seen corresponding path program 1 times
[2021-11-13 17:32:51,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:32:51,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64855604]
[2021-11-13 17:32:51,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:32:51,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:32:51,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:52,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-11-13 17:32:52,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:52,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:32:52,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:32:52,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64855604]
[2021-11-13 17:32:52,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64855604] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:32:52,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 17:32:52,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-11-13 17:32:52,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130869317]
[2021-11-13 17:32:52,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:32:52,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-11-13 17:32:52,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:32:52,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-11-13 17:32:52,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2021-11-13 17:32:52,061 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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)
[2021-11-13 17:32:52,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:32:52,171 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions.
[2021-11-13 17:32:52,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-11-13 17:32:52,172 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 10
[2021-11-13 17:32:52,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:32:52,175 INFO L225 Difference]: With dead ends: 27
[2021-11-13 17:32:52,175 INFO L226 Difference]: Without dead ends: 27
[2021-11-13 17:32:52,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2021-11-13 17:32:52,184 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 28 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.17ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75.21ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:32:52,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 28 Invalid, 41 Unknown, 0 Unchecked, 4.17ms Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 75.21ms Time]
[2021-11-13 17:32:52,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2021-11-13 17:32:52,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27.
[2021-11-13 17:32:52,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2021-11-13 17:32:52,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions.
[2021-11-13 17:32:52,200 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 10
[2021-11-13 17:32:52,201 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:32:52,201 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions.
[2021-11-13 17:32:52,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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)
[2021-11-13 17:32:52,201 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions.
[2021-11-13 17:32:52,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2021-11-13 17:32:52,202 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:32:52,203 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:32:52,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-11-13 17:32:52,204 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 2 more)] ===
[2021-11-13 17:32:52,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:32:52,205 INFO L85 PathProgramCache]: Analyzing trace with hash -2117754768, now seen corresponding path program 1 times
[2021-11-13 17:32:52,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:32:52,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840462547]
[2021-11-13 17:32:52,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:32:52,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:32:52,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:52,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-11-13 17:32:52,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:52,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:32:52,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:32:52,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840462547]
[2021-11-13 17:32:52,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840462547] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:32:52,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 17:32:52,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-11-13 17:32:52,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053281005]
[2021-11-13 17:32:52,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:32:52,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-11-13 17:32:52,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:32:52,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-11-13 17:32:52,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2021-11-13 17:32:52,371 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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)
[2021-11-13 17:32:52,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:32:52,477 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions.
[2021-11-13 17:32:52,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-11-13 17:32:52,485 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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 10
[2021-11-13 17:32:52,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:32:52,488 INFO L225 Difference]: With dead ends: 34
[2021-11-13 17:32:52,490 INFO L226 Difference]: Without dead ends: 34
[2021-11-13 17:32:52,492 INFO L932 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
[2021-11-13 17:32:52,495 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 19 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.81ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.27ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:32:52,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 39 Invalid, 43 Unknown, 0 Unchecked, 5.81ms Time], IncrementalHoareTripleChecker [6 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 70.27ms Time]
[2021-11-13 17:32:52,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states.
[2021-11-13 17:32:52,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29.
[2021-11-13 17:32:52,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 22 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2021-11-13 17:32:52,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions.
[2021-11-13 17:32:52,513 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 10
[2021-11-13 17:32:52,513 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:32:52,513 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions.
[2021-11-13 17:32:52,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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)
[2021-11-13 17:32:52,514 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions.
[2021-11-13 17:32:52,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2021-11-13 17:32:52,515 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:32:52,516 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:32:52,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-11-13 17:32:52,516 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 2 more)] ===
[2021-11-13 17:32:52,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:32:52,520 INFO L85 PathProgramCache]: Analyzing trace with hash -2117695186, now seen corresponding path program 1 times
[2021-11-13 17:32:52,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:32:52,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056104315]
[2021-11-13 17:32:52,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:32:52,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:32:52,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:52,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-11-13 17:32:52,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:52,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:32:52,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:32:52,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056104315]
[2021-11-13 17:32:52,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056104315] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:32:52,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 17:32:52,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-11-13 17:32:52,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403873206]
[2021-11-13 17:32:52,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:32:52,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-11-13 17:32:52,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:32:52,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-11-13 17:32:52,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2021-11-13 17:32:52,702 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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)
[2021-11-13 17:32:52,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:32:52,819 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions.
[2021-11-13 17:32:52,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-11-13 17:32:52,820 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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 10
[2021-11-13 17:32:52,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:32:52,822 INFO L225 Difference]: With dead ends: 38
[2021-11-13 17:32:52,822 INFO L226 Difference]: Without dead ends: 38
[2021-11-13 17:32:52,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2021-11-13 17:32:52,834 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 34 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.29ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 84.87ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:32:52,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 41 Invalid, 72 Unknown, 0 Unchecked, 4.29ms Time], IncrementalHoareTripleChecker [9 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 84.87ms Time]
[2021-11-13 17:32:52,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states.
[2021-11-13 17:32:52,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31.
[2021-11-13 17:32:52,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 24 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2021-11-13 17:32:52,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions.
[2021-11-13 17:32:52,845 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 10
[2021-11-13 17:32:52,846 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:32:52,846 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions.
[2021-11-13 17:32:52,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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)
[2021-11-13 17:32:52,847 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions.
[2021-11-13 17:32:52,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2021-11-13 17:32:52,848 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:32:52,848 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:32:52,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-11-13 17:32:52,849 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting strlen_recErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 2 more)] ===
[2021-11-13 17:32:52,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:32:52,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1259263901, now seen corresponding path program 1 times
[2021-11-13 17:32:52,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:32:52,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083008287]
[2021-11-13 17:32:52,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:32:52,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:32:52,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:52,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-11-13 17:32:52,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:52,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:32:52,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:32:52,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083008287]
[2021-11-13 17:32:52,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083008287] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:32:52,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 17:32:52,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-11-13 17:32:52,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854628717]
[2021-11-13 17:32:52,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:32:52,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-11-13 17:32:52,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:32:52,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-11-13 17:32:52,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2021-11-13 17:32:52,974 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 17:32:53,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:32:53,091 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions.
[2021-11-13 17:32:53,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2021-11-13 17:32:53,092 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 3 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 13
[2021-11-13 17:32:53,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:32:53,093 INFO L225 Difference]: With dead ends: 30
[2021-11-13 17:32:53,093 INFO L226 Difference]: Without dead ends: 30
[2021-11-13 17:32:53,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2021-11-13 17:32:53,095 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 29 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.61ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 77.45ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:32:53,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 40 Invalid, 71 Unknown, 0 Unchecked, 2.61ms Time], IncrementalHoareTripleChecker [8 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 77.45ms Time]
[2021-11-13 17:32:53,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2021-11-13 17:32:53,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30.
[2021-11-13 17:32:53,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 23 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)
[2021-11-13 17:32:53,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions.
[2021-11-13 17:32:53,102 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 13
[2021-11-13 17:32:53,102 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:32:53,102 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions.
[2021-11-13 17:32:53,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 17:32:53,103 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions.
[2021-11-13 17:32:53,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2021-11-13 17:32:53,103 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:32:53,104 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:32:53,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2021-11-13 17:32:53,104 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting strlen_recErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 2 more)] ===
[2021-11-13 17:32:53,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:32:53,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1259263900, now seen corresponding path program 1 times
[2021-11-13 17:32:53,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:32:53,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79669732]
[2021-11-13 17:32:53,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:32:53,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:32:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:53,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-11-13 17:32:53,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:53,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:32:53,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:32:53,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79669732]
[2021-11-13 17:32:53,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79669732] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:32:53,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 17:32:53,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2021-11-13 17:32:53,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012821402]
[2021-11-13 17:32:53,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:32:53,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2021-11-13 17:32:53,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:32:53,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2021-11-13 17:32:53,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2021-11-13 17:32:53,270 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 17:32:53,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:32:53,476 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions.
[2021-11-13 17:32:53,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2021-11-13 17:32:53,477 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 3 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 13
[2021-11-13 17:32:53,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:32:53,478 INFO L225 Difference]: With dead ends: 37
[2021-11-13 17:32:53,478 INFO L226 Difference]: Without dead ends: 37
[2021-11-13 17:32:53,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110
[2021-11-13 17:32:53,480 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 45 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 115.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.35ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 135.61ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:32:53,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 45 Invalid, 105 Unknown, 0 Unchecked, 2.35ms Time], IncrementalHoareTripleChecker [11 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 135.61ms Time]
[2021-11-13 17:32:53,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2021-11-13 17:32:53,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37.
[2021-11-13 17:32:53,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 28 states have internal predecessors, (33), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2021-11-13 17:32:53,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions.
[2021-11-13 17:32:53,488 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 13
[2021-11-13 17:32:53,488 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:32:53,488 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions.
[2021-11-13 17:32:53,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 17:32:53,489 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions.
[2021-11-13 17:32:53,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2021-11-13 17:32:53,490 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:32:53,490 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:32:53,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2021-11-13 17:32:53,490 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 2 more)] ===
[2021-11-13 17:32:53,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:32:53,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1143813903, now seen corresponding path program 1 times
[2021-11-13 17:32:53,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:32:53,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840323921]
[2021-11-13 17:32:53,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:32:53,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:32:53,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:53,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-11-13 17:32:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:53,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:32:53,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:32:53,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840323921]
[2021-11-13 17:32:53,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840323921] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 17:32:53,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448307193]
[2021-11-13 17:32:53,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:32:53,619 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:32:53,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd913c58-c84e-47a2-a04f-577b039e0182/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 17:32:53,626 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd913c58-c84e-47a2-a04f-577b039e0182/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 17:32:53,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd913c58-c84e-47a2-a04f-577b039e0182/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2021-11-13 17:32:53,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:53,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 11 conjunts are in the unsatisfiable core
[2021-11-13 17:32:53,845 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 17:32:53,930 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 6 treesize of output 5
[2021-11-13 17:32:54,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:32:54,059 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 17:32:54,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:32:54,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448307193] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 17:32:54,465 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-11-13 17:32:54,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9
[2021-11-13 17:32:54,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537593883]
[2021-11-13 17:32:54,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-11-13 17:32:54,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2021-11-13 17:32:54,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:32:54,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-11-13 17:32:54,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90
[2021-11-13 17:32:54,470 INFO L87 Difference]: Start difference. First operand 37 states and 42 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)
[2021-11-13 17:32:54,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:32:54,697 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions.
[2021-11-13 17:32:54,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2021-11-13 17:32:54,699 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 14
[2021-11-13 17:32:54,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:32:54,702 INFO L225 Difference]: With dead ends: 49
[2021-11-13 17:32:54,703 INFO L226 Difference]: Without dead ends: 49
[2021-11-13 17:32:54,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156
[2021-11-13 17:32:54,704 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 42 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 121.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.62ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 147.55ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:32:54,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 65 Invalid, 150 Unknown, 0 Unchecked, 3.62ms Time], IncrementalHoareTripleChecker [16 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 147.55ms Time]
[2021-11-13 17:32:54,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2021-11-13 17:32:54,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 34.
[2021-11-13 17:32:54,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4)
[2021-11-13 17:32:54,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions.
[2021-11-13 17:32:54,725 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 14
[2021-11-13 17:32:54,726 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:32:54,726 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions.
[2021-11-13 17:32:54,727 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)
[2021-11-13 17:32:54,727 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions.
[2021-11-13 17:32:54,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2021-11-13 17:32:54,729 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:32:54,729 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:32:54,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd913c58-c84e-47a2-a04f-577b039e0182/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2021-11-13 17:32:54,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd913c58-c84e-47a2-a04f-577b039e0182/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:32:54,946 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting strlen_recErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 2 more)] ===
[2021-11-13 17:32:54,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:32:54,946 INFO L85 PathProgramCache]: Analyzing trace with hash 228211982, now seen corresponding path program 1 times
[2021-11-13 17:32:54,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:32:54,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320616263]
[2021-11-13 17:32:54,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:32:54,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:32:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:55,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-11-13 17:32:55,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:55,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:32:55,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:32:55,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320616263]
[2021-11-13 17:32:55,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320616263] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:32:55,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 17:32:55,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2021-11-13 17:32:55,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907946127]
[2021-11-13 17:32:55,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:32:55,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2021-11-13 17:32:55,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:32:55,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2021-11-13 17:32:55,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72
[2021-11-13 17:32:55,175 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 17:32:55,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:32:55,371 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions.
[2021-11-13 17:32:55,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2021-11-13 17:32:55,372 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17
[2021-11-13 17:32:55,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:32:55,374 INFO L225 Difference]: With dead ends: 44
[2021-11-13 17:32:55,374 INFO L226 Difference]: Without dead ends: 44
[2021-11-13 17:32:55,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182
[2021-11-13 17:32:55,375 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 24 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 89.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.97ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 110.99ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:32:55,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 90 Invalid, 133 Unknown, 0 Unchecked, 3.97ms Time], IncrementalHoareTripleChecker [10 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 110.99ms Time]
[2021-11-13 17:32:55,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states.
[2021-11-13 17:32:55,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41.
[2021-11-13 17:32:55,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 31 states have internal predecessors, (34), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5)
[2021-11-13 17:32:55,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions.
[2021-11-13 17:32:55,383 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 17
[2021-11-13 17:32:55,384 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:32:55,384 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions.
[2021-11-13 17:32:55,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 17:32:55,385 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions.
[2021-11-13 17:32:55,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2021-11-13 17:32:55,386 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:32:55,386 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:32:55,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2021-11-13 17:32:55,387 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting strlen_recErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 2 more)] ===
[2021-11-13 17:32:55,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:32:55,387 INFO L85 PathProgramCache]: Analyzing trace with hash 929276560, now seen corresponding path program 1 times
[2021-11-13 17:32:55,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:32:55,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452814660]
[2021-11-13 17:32:55,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:32:55,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:32:55,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:55,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-11-13 17:32:55,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:55,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:32:55,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:32:55,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452814660]
[2021-11-13 17:32:55,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452814660] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:32:55,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 17:32:55,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2021-11-13 17:32:55,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185601020]
[2021-11-13 17:32:55,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:32:55,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2021-11-13 17:32:55,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:32:55,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-11-13 17:32:55,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90
[2021-11-13 17:32:55,574 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 17:32:55,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:32:55,779 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions.
[2021-11-13 17:32:55,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2021-11-13 17:32:55,780 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17
[2021-11-13 17:32:55,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:32:55,783 INFO L225 Difference]: With dead ends: 55
[2021-11-13 17:32:55,783 INFO L226 Difference]: Without dead ends: 55
[2021-11-13 17:32:55,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210
[2021-11-13 17:32:55,787 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 42 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 96.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.96ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 117.03ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:32:55,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 67 Invalid, 143 Unknown, 0 Unchecked, 2.96ms Time], IncrementalHoareTripleChecker [13 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 117.03ms Time]
[2021-11-13 17:32:55,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2021-11-13 17:32:55,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 42.
[2021-11-13 17:32:55,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 30 states have (on average 1.2) internal successors, (36), 32 states have internal predecessors, (36), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5)
[2021-11-13 17:32:55,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions.
[2021-11-13 17:32:55,800 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 17
[2021-11-13 17:32:55,800 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:32:55,801 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions.
[2021-11-13 17:32:55,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 17:32:55,801 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions.
[2021-11-13 17:32:55,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2021-11-13 17:32:55,802 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:32:55,802 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:32:55,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2021-11-13 17:32:55,803 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr4ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 2 more)] ===
[2021-11-13 17:32:55,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:32:55,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1516451273, now seen corresponding path program 1 times
[2021-11-13 17:32:55,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:32:55,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806595056]
[2021-11-13 17:32:55,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:32:55,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:32:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:55,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-11-13 17:32:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:55,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2021-11-13 17:32:55,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:55,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:32:55,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:32:55,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806595056]
[2021-11-13 17:32:55,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806595056] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 17:32:55,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 17:32:55,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-11-13 17:32:55,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320072754]
[2021-11-13 17:32:55,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 17:32:55,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-11-13 17:32:55,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:32:55,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-11-13 17:32:55,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2021-11-13 17:32:55,924 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2021-11-13 17:32:55,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:32:55,981 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions.
[2021-11-13 17:32:55,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-11-13 17:32:55,982 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18
[2021-11-13 17:32:55,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:32:55,983 INFO L225 Difference]: With dead ends: 41
[2021-11-13 17:32:55,983 INFO L226 Difference]: Without dead ends: 24
[2021-11-13 17:32:55,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2021-11-13 17:32:55,984 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 14 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.90ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.23ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:32:55,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 29 Invalid, 44 Unknown, 0 Unchecked, 0.90ms Time], IncrementalHoareTripleChecker [5 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 43.23ms Time]
[2021-11-13 17:32:55,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states.
[2021-11-13 17:32:55,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22.
[2021-11-13 17:32:55,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 17:32:55,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions.
[2021-11-13 17:32:55,992 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 18
[2021-11-13 17:32:55,994 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:32:55,994 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions.
[2021-11-13 17:32:55,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2021-11-13 17:32:55,995 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions.
[2021-11-13 17:32:55,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2021-11-13 17:32:55,998 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:32:55,999 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:32:55,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2021-11-13 17:32:55,999 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting strlen_recErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 2 more)] ===
[2021-11-13 17:32:56,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:32:56,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1650962797, now seen corresponding path program 1 times
[2021-11-13 17:32:56,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:32:56,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014724014]
[2021-11-13 17:32:56,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:32:56,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:32:56,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:56,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-11-13 17:32:56,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:56,223 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:32:56,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:32:56,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014724014]
[2021-11-13 17:32:56,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014724014] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 17:32:56,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102872388]
[2021-11-13 17:32:56,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:32:56,225 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:32:56,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd913c58-c84e-47a2-a04f-577b039e0182/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 17:32:56,226 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd913c58-c84e-47a2-a04f-577b039e0182/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 17:32:56,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd913c58-c84e-47a2-a04f-577b039e0182/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2021-11-13 17:32:56,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:56,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 21 conjunts are in the unsatisfiable core
[2021-11-13 17:32:56,354 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 17:32:56,578 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:32:56,579 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 17:32:56,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3
[2021-11-13 17:32:56,915 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:32:56,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102872388] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 17:32:56,916 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-11-13 17:32:56,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22
[2021-11-13 17:32:56,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247855018]
[2021-11-13 17:32:56,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-11-13 17:32:56,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2021-11-13 17:32:56,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:32:56,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2021-11-13 17:32:56,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506
[2021-11-13 17:32:56,919 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 23 states, 19 states have (on average 1.736842105263158) internal successors, (33), 17 states have internal predecessors, (33), 7 states have call successors, (9), 7 states have call predecessors, (9), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 17:32:57,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:32:57,277 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions.
[2021-11-13 17:32:57,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2021-11-13 17:32:57,277 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 1.736842105263158) internal successors, (33), 17 states have internal predecessors, (33), 7 states have call successors, (9), 7 states have call predecessors, (9), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21
[2021-11-13 17:32:57,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:32:57,278 INFO L225 Difference]: With dead ends: 31
[2021-11-13 17:32:57,278 INFO L226 Difference]: Without dead ends: 31
[2021-11-13 17:32:57,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=125, Invalid=687, Unknown=0, NotChecked=0, Total=812
[2021-11-13 17:32:57,280 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 57 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 158.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.69ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 202.54ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:32:57,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 78 Invalid, 246 Unknown, 0 Unchecked, 2.69ms Time], IncrementalHoareTripleChecker [18 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 202.54ms Time]
[2021-11-13 17:32:57,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2021-11-13 17:32:57,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26.
[2021-11-13 17:32:57,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 5 states have call successors, (5), 5 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 17:32:57,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions.
[2021-11-13 17:32:57,292 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 21
[2021-11-13 17:32:57,292 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:32:57,292 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions.
[2021-11-13 17:32:57,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 1.736842105263158) internal successors, (33), 17 states have internal predecessors, (33), 7 states have call successors, (9), 7 states have call predecessors, (9), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 17:32:57,293 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions.
[2021-11-13 17:32:57,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2021-11-13 17:32:57,293 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:32:57,294 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:32:57,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd913c58-c84e-47a2-a04f-577b039e0182/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2021-11-13 17:32:57,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd913c58-c84e-47a2-a04f-577b039e0182/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10
[2021-11-13 17:32:57,494 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting strlen_recErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 2 more)] ===
[2021-11-13 17:32:57,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:32:57,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1692198505, now seen corresponding path program 2 times
[2021-11-13 17:32:57,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:32:57,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149552383]
[2021-11-13 17:32:57,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:32:57,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:32:57,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:57,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-11-13 17:32:57,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:32:57,805 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:32:57,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:32:57,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149552383]
[2021-11-13 17:32:57,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149552383] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 17:32:57,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204469222]
[2021-11-13 17:32:57,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-11-13 17:32:57,806 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:32:57,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd913c58-c84e-47a2-a04f-577b039e0182/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 17:32:57,807 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd913c58-c84e-47a2-a04f-577b039e0182/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 17:32:57,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd913c58-c84e-47a2-a04f-577b039e0182/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2021-11-13 17:32:57,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-11-13 17:32:57,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-13 17:32:57,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 33 conjunts are in the unsatisfiable core
[2021-11-13 17:32:57,923 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 17:32:57,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 25 treesize of output 21
[2021-11-13 17:32:58,633 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-11-13 17:32:58,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 33
[2021-11-13 17:32:58,894 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:32:58,894 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 17:32:59,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34
[2021-11-13 17:32:59,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30
[2021-11-13 17:32:59,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35
[2021-11-13 17:32:59,689 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:32:59,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204469222] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 17:32:59,690 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-11-13 17:32:59,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 35
[2021-11-13 17:32:59,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427965376]
[2021-11-13 17:32:59,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-11-13 17:32:59,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states
[2021-11-13 17:32:59,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:32:59,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2021-11-13 17:32:59,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1082, Unknown=0, NotChecked=0, Total=1190
[2021-11-13 17:32:59,693 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 35 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 26 states have internal predecessors, (44), 10 states have call successors, (12), 11 states have call predecessors, (12), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 17:33:00,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:33:00,608 INFO L93 Difference]: Finished difference Result 48 states and 49 transitions.
[2021-11-13 17:33:00,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states.
[2021-11-13 17:33:00,609 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 26 states have internal predecessors, (44), 10 states have call successors, (12), 11 states have call predecessors, (12), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25
[2021-11-13 17:33:00,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:33:00,609 INFO L225 Difference]: With dead ends: 48
[2021-11-13 17:33:00,609 INFO L226 Difference]: Without dead ends: 39
[2021-11-13 17:33:00,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=212, Invalid=2140, Unknown=0, NotChecked=0, Total=2352
[2021-11-13 17:33:00,612 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 48 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 158.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.24ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 127 IncrementalHoareTripleChecker+Unchecked, 215.00ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:33:00,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 141 Invalid, 401 Unknown, 0 Unchecked, 4.24ms Time], IncrementalHoareTripleChecker [13 Valid, 261 Invalid, 0 Unknown, 127 Unchecked, 215.00ms Time]
[2021-11-13 17:33:00,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2021-11-13 17:33:00,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34.
[2021-11-13 17:33:00,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 6 states have call successors, (6), 6 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 17:33:00,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions.
[2021-11-13 17:33:00,616 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 25
[2021-11-13 17:33:00,616 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:33:00,616 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions.
[2021-11-13 17:33:00,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 26 states have internal predecessors, (44), 10 states have call successors, (12), 11 states have call predecessors, (12), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 17:33:00,617 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions.
[2021-11-13 17:33:00,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2021-11-13 17:33:00,618 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 17:33:00,618 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:33:00,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd913c58-c84e-47a2-a04f-577b039e0182/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2021-11-13 17:33:00,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd913c58-c84e-47a2-a04f-577b039e0182/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2021-11-13 17:33:00,837 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting strlen_recErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK (and 2 more)] ===
[2021-11-13 17:33:00,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 17:33:00,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1867118562, now seen corresponding path program 3 times
[2021-11-13 17:33:00,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 17:33:00,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99442825]
[2021-11-13 17:33:00,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 17:33:00,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 17:33:00,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:01,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-11-13 17:33:01,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 17:33:01,123 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 17:33:01,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 17:33:01,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99442825]
[2021-11-13 17:33:01,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99442825] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 17:33:01,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965805438]
[2021-11-13 17:33:01,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2021-11-13 17:33:01,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 17:33:01,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd913c58-c84e-47a2-a04f-577b039e0182/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 17:33:01,131 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd913c58-c84e-47a2-a04f-577b039e0182/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 17:33:01,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd913c58-c84e-47a2-a04f-577b039e0182/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2021-11-13 17:33:01,246 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2021-11-13 17:33:01,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-13 17:33:01,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 34 conjunts are in the unsatisfiable core
[2021-11-13 17:33:01,252 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 17:33:01,283 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 6 treesize of output 5
[2021-11-13 17:33:01,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 11
[2021-11-13 17:33:01,513 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size
[2021-11-13 17:33:01,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19
[2021-11-13 17:33:01,714 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked.
[2021-11-13 17:33:01,715 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 17:33:02,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 29
[2021-11-13 17:33:02,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 35
[2021-11-13 17:33:02,717 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked.
[2021-11-13 17:33:02,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965805438] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 17:33:02,718 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-11-13 17:33:02,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 9] total 32
[2021-11-13 17:33:02,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551174052]
[2021-11-13 17:33:02,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-11-13 17:33:02,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states
[2021-11-13 17:33:02,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 17:33:02,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants.
[2021-11-13 17:33:02,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=916, Unknown=0, NotChecked=0, Total=992
[2021-11-13 17:33:02,728 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand has 32 states, 27 states have (on average 2.037037037037037) internal successors, (55), 24 states have internal predecessors, (55), 11 states have call successors, (13), 10 states have call predecessors, (13), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 17:33:04,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 17:33:04,397 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions.
[2021-11-13 17:33:04,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states.
[2021-11-13 17:33:04,398 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 27 states have (on average 2.037037037037037) internal successors, (55), 24 states have internal predecessors, (55), 11 states have call successors, (13), 10 states have call predecessors, (13), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33
[2021-11-13 17:33:04,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 17:33:04,398 INFO L225 Difference]: With dead ends: 53
[2021-11-13 17:33:04,398 INFO L226 Difference]: Without dead ends: 0
[2021-11-13 17:33:04,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=388, Invalid=2918, Unknown=0, NotChecked=0, Total=3306
[2021-11-13 17:33:04,401 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 52 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 291.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.37ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 340.39ms IncrementalHoareTripleChecker+Time
[2021-11-13 17:33:04,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 163 Invalid, 559 Unknown, 0 Unchecked, 5.37ms Time], IncrementalHoareTripleChecker [22 Valid, 471 Invalid, 0 Unknown, 66 Unchecked, 340.39ms Time]
[2021-11-13 17:33:04,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2021-11-13 17:33:04,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2021-11-13 17:33:04,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-11-13 17:33:04,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2021-11-13 17:33:04,403 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33
[2021-11-13 17:33:04,403 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 17:33:04,404 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2021-11-13 17:33:04,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 27 states have (on average 2.037037037037037) internal successors, (55), 24 states have internal predecessors, (55), 11 states have call successors, (13), 10 states have call predecessors, (13), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 17:33:04,404 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2021-11-13 17:33:04,404 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2021-11-13 17:33:04,407 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0REQUIRES_VIOLATION (6 of 7 remaining)
[2021-11-13 17:33:04,408 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr1REQUIRES_VIOLATION (5 of 7 remaining)
[2021-11-13 17:33:04,408 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr2REQUIRES_VIOLATION (4 of 7 remaining)
[2021-11-13 17:33:04,408 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr3REQUIRES_VIOLATION (3 of 7 remaining)
[2021-11-13 17:33:04,409 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr4ENSURES_VIOLATIONMEMORY_LEAK (2 of 7 remaining)
[2021-11-13 17:33:04,409 INFO L764 garLoopResultBuilder]: Registering result SAFE for location strlen_recErr0REQUIRES_VIOLATION (1 of 7 remaining)
[2021-11-13 17:33:04,409 INFO L764 garLoopResultBuilder]: Registering result SAFE for location strlen_recErr1REQUIRES_VIOLATION (0 of 7 remaining)
[2021-11-13 17:33:04,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd913c58-c84e-47a2-a04f-577b039e0182/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2021-11-13 17:33:04,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd913c58-c84e-47a2-a04f-577b039e0182/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2021-11-13 17:33:04,627 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 17:33:04,628 INFO L179 ceAbstractionStarter]: Computing trace abstraction results
[2021-11-13 17:33:04,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 05:33:04 BoogieIcfgContainer
[2021-11-13 17:33:04,631 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-11-13 17:33:04,632 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2021-11-13 17:33:04,632 INFO L271 PluginConnector]: Initializing Witness Printer...
[2021-11-13 17:33:04,633 INFO L275 PluginConnector]: Witness Printer initialized
[2021-11-13 17:33:04,633 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:32:51" (3/4) ...
[2021-11-13 17:33:04,637 INFO L137 WitnessPrinter]: Generating witness for correct program
[2021-11-13 17:33:04,645 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init
[2021-11-13 17:33:04,645 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32
[2021-11-13 17:33:04,646 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64
[2021-11-13 17:33:04,646 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity
[2021-11-13 17:33:04,646 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity
[2021-11-13 17:33:04,646 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main
[2021-11-13 17:33:04,646 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure strlen_rec
[2021-11-13 17:33:04,647 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity
[2021-11-13 17:33:04,651 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges
[2021-11-13 17:33:04,652 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges
[2021-11-13 17:33:04,652 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges
[2021-11-13 17:33:04,652 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2021-11-13 17:33:04,692 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd913c58-c84e-47a2-a04f-577b039e0182/bin/uautomizer-YU5uOKAj3y/witness.graphml
[2021-11-13 17:33:04,693 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2021-11-13 17:33:04,694 INFO L158 Benchmark]: Toolchain (without parser) took 14814.63ms. Allocated memory was 86.0MB in the beginning and 201.3MB in the end (delta: 115.3MB). Free memory was 49.0MB in the beginning and 152.3MB in the end (delta: -103.3MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB.
[2021-11-13 17:33:04,694 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 86.0MB. Free memory is still 66.8MB. There was no memory consumed. Max. memory is 16.1GB.
[2021-11-13 17:33:04,695 INFO L158 Benchmark]: CACSL2BoogieTranslator took 606.58ms. Allocated memory was 86.0MB in the beginning and 121.6MB in the end (delta: 35.7MB). Free memory was 48.8MB in the beginning and 90.3MB in the end (delta: -41.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2021-11-13 17:33:04,695 INFO L158 Benchmark]: Boogie Preprocessor took 65.75ms. Allocated memory is still 121.6MB. Free memory was 90.3MB in the beginning and 88.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2021-11-13 17:33:04,696 INFO L158 Benchmark]: RCFGBuilder took 700.64ms. Allocated memory is still 121.6MB. Free memory was 88.2MB in the beginning and 70.1MB in the end (delta: 18.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
[2021-11-13 17:33:04,696 INFO L158 Benchmark]: TraceAbstraction took 13370.97ms. Allocated memory was 121.6MB in the beginning and 201.3MB in the end (delta: 79.7MB). Free memory was 69.7MB in the beginning and 156.2MB in the end (delta: -86.4MB). There was no memory consumed. Max. memory is 16.1GB.
[2021-11-13 17:33:04,697 INFO L158 Benchmark]: Witness Printer took 60.62ms. Allocated memory is still 201.3MB. Free memory was 155.1MB in the beginning and 152.3MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2021-11-13 17:33:04,700 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.37ms. Allocated memory is still 86.0MB. Free memory is still 66.8MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 606.58ms. Allocated memory was 86.0MB in the beginning and 121.6MB in the end (delta: 35.7MB). Free memory was 48.8MB in the beginning and 90.3MB in the end (delta: -41.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 65.75ms. Allocated memory is still 121.6MB. Free memory was 90.3MB in the beginning and 88.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 700.64ms. Allocated memory is still 121.6MB. Free memory was 88.2MB in the beginning and 70.1MB in the end (delta: 18.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
* TraceAbstraction took 13370.97ms. Allocated memory was 121.6MB in the beginning and 201.3MB in the end (delta: 79.7MB). Free memory was 69.7MB in the beginning and 156.2MB in the end (delta: -86.4MB). There was no memory consumed. Max. memory is 16.1GB.
* Witness Printer took 60.62ms. Allocated memory is still 201.3MB. Free memory was 155.1MB in the beginning and 152.3MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: ErrorAutomatonStatistics
NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
- PositiveResult [Line: 529]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 529]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 532]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 532]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 520]: all allocated memory was freed
For all program executions holds that all allocated memory was freed at this location
- PositiveResult [Line: 515]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 515]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 9 procedures, 48 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 13.3s, OverallIterations: 13, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 470 SdHoareTripleChecker+Valid, 1695.93ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 452 mSDsluCounter, 857 SdHoareTripleChecker+Invalid, 1382.08ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 193 IncrementalHoareTripleChecker+Unchecked, 611 mSDsCounter, 142 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1722 IncrementalHoareTripleChecker+Invalid, 2057 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 142 mSolverCounterUnsat, 246 mSDtfsCounter, 1722 mSolverCounterSat, 46.66ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 364 GetRequests, 159 SyntacticMatches, 6 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 974 ImplicationChecksByTransitivity, 5.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=9, InterpolantAutomatonStates: 131, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 55 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.4s InterpolantComputationTime, 304 NumberOfCodeBlocks, 304 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 376 ConstructedInterpolants, 20 QuantifiedInterpolants, 2941 SizeOfPredicates, 39 NumberOfNonLiveVariables, 400 ConjunctsInSsa, 99 ConjunctsInUnsatCore, 21 InterpolantComputations, 9 PerfectInterpolantSequences, 46/118 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
- AllSpecificationsHoldResult: All specifications hold
7 specifications checked. All of them hold
RESULT: Ultimate proved your program to be correct!
[2021-11-13 17:33:04,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd913c58-c84e-47a2-a04f-577b039e0182/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Writing output log to file Ultimate.log
Result:
TRUE