./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-crafted/4BitCounterPointer.c --full-output --architecture 64bit
--------------------------------------------------------------------------------
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_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/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_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-crafted/4BitCounterPointer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/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 64bit --witnessprinter.graph.data.programhash 7e6a17b7d4143542ba439290f9741c160a8cb32cc90a0cc2a238a67702990ba0
--- Real Ultimate output ---
This is Ultimate 0.2.1-dev-63182f1
[2021-11-13 18:12:58,082 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2021-11-13 18:12:58,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2021-11-13 18:12:58,129 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2021-11-13 18:12:58,130 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2021-11-13 18:12:58,132 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2021-11-13 18:12:58,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2021-11-13 18:12:58,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2021-11-13 18:12:58,140 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2021-11-13 18:12:58,141 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2021-11-13 18:12:58,143 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2021-11-13 18:12:58,145 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2021-11-13 18:12:58,146 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2021-11-13 18:12:58,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2021-11-13 18:12:58,150 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-11-13 18:12:58,152 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-11-13 18:12:58,154 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2021-11-13 18:12:58,155 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2021-11-13 18:12:58,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-11-13 18:12:58,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2021-11-13 18:12:58,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2021-11-13 18:12:58,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2021-11-13 18:12:58,176 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2021-11-13 18:12:58,178 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2021-11-13 18:12:58,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2021-11-13 18:12:58,189 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2021-11-13 18:12:58,189 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2021-11-13 18:12:58,191 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2021-11-13 18:12:58,193 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2021-11-13 18:12:58,195 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2021-11-13 18:12:58,196 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2021-11-13 18:12:58,197 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2021-11-13 18:12:58,200 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2021-11-13 18:12:58,201 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2021-11-13 18:12:58,203 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2021-11-13 18:12:58,204 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2021-11-13 18:12:58,205 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2021-11-13 18:12:58,205 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2021-11-13 18:12:58,206 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2021-11-13 18:12:58,207 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2021-11-13 18:12:58,208 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2021-11-13 18:12:58,210 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf
[2021-11-13 18:12:58,274 INFO L113 SettingsManager]: Loading preferences was successful
[2021-11-13 18:12:58,275 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2021-11-13 18:12:58,276 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-11-13 18:12:58,284 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-11-13 18:12:58,285 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2021-11-13 18:12:58,285 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2021-11-13 18:12:58,286 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-11-13 18:12:58,287 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2021-11-13 18:12:58,287 INFO L138 SettingsManager]: * Use SBE=true
[2021-11-13 18:12:58,287 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-11-13 18:12:58,289 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false
[2021-11-13 18:12:58,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2021-11-13 18:12:58,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2021-11-13 18:12:58,290 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2021-11-13 18:12:58,290 INFO L138 SettingsManager]: * Bitprecise bitfields=true
[2021-11-13 18:12:58,290 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2021-11-13 18:12:58,291 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-11-13 18:12:58,291 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2021-11-13 18:12:58,291 INFO L138 SettingsManager]: * Use constant arrays=true
[2021-11-13 18:12:58,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-11-13 18:12:58,292 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2021-11-13 18:12:58,292 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2021-11-13 18:12:58,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 18:12:58,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-11-13 18:12:58,293 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2021-11-13 18:12:58,294 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2021-11-13 18:12:58,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-11-13 18:12:58,294 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2021-11-13 18:12:58,295 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_588c00be-0167-4d97-8ec0-c2ed297eb2db/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e6a17b7d4143542ba439290f9741c160a8cb32cc90a0cc2a238a67702990ba0
[2021-11-13 18:12:58,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2021-11-13 18:12:58,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-11-13 18:12:58,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-11-13 18:12:58,664 INFO L271 PluginConnector]: Initializing CDTParser...
[2021-11-13 18:12:58,665 INFO L275 PluginConnector]: CDTParser initialized
[2021-11-13 18:12:58,667 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/termination-crafted/4BitCounterPointer.c
[2021-11-13 18:12:58,781 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y/data/c33d106b7/0e4f2f147e004f14bbb564c46f4cdb95/FLAGa5a67040a
[2021-11-13 18:12:59,297 INFO L306 CDTParser]: Found 1 translation units.
[2021-11-13 18:12:59,297 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/sv-benchmarks/c/termination-crafted/4BitCounterPointer.c
[2021-11-13 18:12:59,305 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y/data/c33d106b7/0e4f2f147e004f14bbb564c46f4cdb95/FLAGa5a67040a
[2021-11-13 18:12:59,661 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y/data/c33d106b7/0e4f2f147e004f14bbb564c46f4cdb95
[2021-11-13 18:12:59,664 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-11-13 18:12:59,666 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements.
[2021-11-13 18:12:59,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2021-11-13 18:12:59,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2021-11-13 18:12:59,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2021-11-13 18:12:59,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:12:59" (1/1) ...
[2021-11-13 18:12:59,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6712e826 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:12:59, skipping insertion in model container
[2021-11-13 18:12:59,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:12:59" (1/1) ...
[2021-11-13 18:12:59,688 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2021-11-13 18:12:59,700 INFO L178 MainTranslator]: Built tables and reachable declarations
[2021-11-13 18:12:59,876 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 18:12:59,900 INFO L203 MainTranslator]: Completed pre-run
[2021-11-13 18:12:59,922 INFO L206 PostProcessor]: Analyzing one entry point: main
[2021-11-13 18:12:59,941 INFO L208 MainTranslator]: Completed translation
[2021-11-13 18:12:59,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:12:59 WrapperNode
[2021-11-13 18:12:59,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2021-11-13 18:12:59,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-11-13 18:12:59,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2021-11-13 18:12:59,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2021-11-13 18:12:59,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:12:59" (1/1) ...
[2021-11-13 18:12:59,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:12:59" (1/1) ...
[2021-11-13 18:12:59,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:12:59" (1/1) ...
[2021-11-13 18:12:59,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:12:59" (1/1) ...
[2021-11-13 18:12:59,975 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:12:59" (1/1) ...
[2021-11-13 18:12:59,980 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:12:59" (1/1) ...
[2021-11-13 18:12:59,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:12:59" (1/1) ...
[2021-11-13 18:12:59,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-11-13 18:12:59,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-11-13 18:12:59,986 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2021-11-13 18:12:59,986 INFO L275 PluginConnector]: RCFGBuilder initialized
[2021-11-13 18:12:59,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:12:59" (1/1) ...
[2021-11-13 18:13:00,004 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-11-13 18:13:00,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:13:00,049 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2021-11-13 18:13:00,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2021-11-13 18:13:00,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2021-11-13 18:13:00,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-11-13 18:13:00,110 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2021-11-13 18:13:00,110 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2021-11-13 18:13:00,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2021-11-13 18:13:00,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2021-11-13 18:13:00,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2021-11-13 18:13:00,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2021-11-13 18:13:00,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2021-11-13 18:13:00,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-11-13 18:13:00,627 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-11-13 18:13:00,628 INFO L299 CfgBuilder]: Removed 1 assume(true) statements.
[2021-11-13 18:13:00,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:13:00 BoogieIcfgContainer
[2021-11-13 18:13:00,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-11-13 18:13:00,634 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-11-13 18:13:00,634 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2021-11-13 18:13:00,642 INFO L275 PluginConnector]: TraceAbstraction initialized
[2021-11-13 18:13:00,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:12:59" (1/3) ...
[2021-11-13 18:13:00,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b4db368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:13:00, skipping insertion in model container
[2021-11-13 18:13:00,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:12:59" (2/3) ...
[2021-11-13 18:13:00,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b4db368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:13:00, skipping insertion in model container
[2021-11-13 18:13:00,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:13:00" (3/3) ...
[2021-11-13 18:13:00,648 INFO L111 eAbstractionObserver]: Analyzing ICFG 4BitCounterPointer.c
[2021-11-13 18:13:00,665 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-11-13 18:13:00,665 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations.
[2021-11-13 18:13:00,736 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2021-11-13 18:13:00,746 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 18:13:00,746 INFO L340 AbstractCegarLoop]: Starting to check reachability of 31 error locations.
[2021-11-13 18:13:00,777 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 25 states have (on average 2.44) internal successors, (61), 56 states have internal predecessors, (61), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)
[2021-11-13 18:13:00,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2021-11-13 18:13:00,788 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:13:00,789 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:13:00,790 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 26 more)] ===
[2021-11-13 18:13:00,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:13:00,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1507145205, now seen corresponding path program 1 times
[2021-11-13 18:13:00,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:13:00,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795290914]
[2021-11-13 18:13:00,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:13:00,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:13:00,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:13:01,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-11-13 18:13:01,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:13:01,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:13:01,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:13:01,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795290914]
[2021-11-13 18:13:01,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795290914] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:13:01,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:13:01,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-13 18:13:01,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067461608]
[2021-11-13 18:13:01,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:13:01,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-13 18:13:01,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:13:01,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-13 18:13:01,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-11-13 18:13:01,194 INFO L87 Difference]: Start difference. First operand has 61 states, 25 states have (on average 2.44) internal successors, (61), 56 states have internal predecessors, (61), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 18:13:01,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:13:01,425 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions.
[2021-11-13 18:13:01,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-11-13 18:13:01,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 7
[2021-11-13 18:13:01,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:13:01,441 INFO L225 Difference]: With dead ends: 57
[2021-11-13 18:13:01,441 INFO L226 Difference]: Without dead ends: 54
[2021-11-13 18:13:01,443 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 18:13:01,448 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 49 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 136.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.40ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 179.61ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:13:01,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 35 Invalid, 97 Unknown, 0 Unchecked, 6.40ms Time], IncrementalHoareTripleChecker [5 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 179.61ms Time]
[2021-11-13 18:13:01,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states.
[2021-11-13 18:13:01,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54.
[2021-11-13 18:13:01,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 24 states have (on average 2.25) internal successors, (54), 50 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 18:13:01,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions.
[2021-11-13 18:13:01,512 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 7
[2021-11-13 18:13:01,513 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:13:01,513 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions.
[2021-11-13 18:13:01,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 18:13:01,514 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions.
[2021-11-13 18:13:01,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2021-11-13 18:13:01,514 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:13:01,515 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:13:01,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-11-13 18:13:01,515 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 26 more)] ===
[2021-11-13 18:13:01,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:13:01,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1507145206, now seen corresponding path program 1 times
[2021-11-13 18:13:01,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:13:01,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468019328]
[2021-11-13 18:13:01,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:13:01,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:13:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:13:01,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-11-13 18:13:01,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:13:01,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:13:01,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:13:01,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468019328]
[2021-11-13 18:13:01,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468019328] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:13:01,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:13:01,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-13 18:13:01,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481543227]
[2021-11-13 18:13:01,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:13:01,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-13 18:13:01,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:13:01,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-13 18:13:01,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-11-13 18:13:01,683 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 18:13:01,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:13:01,809 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions.
[2021-11-13 18:13:01,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-11-13 18:13:01,810 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 7
[2021-11-13 18:13:01,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:13:01,812 INFO L225 Difference]: With dead ends: 50
[2021-11-13 18:13:01,812 INFO L226 Difference]: Without dead ends: 50
[2021-11-13 18:13:01,813 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 18:13:01,815 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 47 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 84.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.75ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 111.41ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:13:01,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 31 Invalid, 82 Unknown, 0 Unchecked, 3.75ms Time], IncrementalHoareTripleChecker [4 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 111.41ms Time]
[2021-11-13 18:13:01,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2021-11-13 18:13:01,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50.
[2021-11-13 18:13:01,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 46 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 18:13:01,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions.
[2021-11-13 18:13:01,826 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 7
[2021-11-13 18:13:01,827 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:13:01,827 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions.
[2021-11-13 18:13:01,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 18:13:01,828 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions.
[2021-11-13 18:13:01,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2021-11-13 18:13:01,829 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:13:01,829 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:13:01,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-11-13 18:13:01,830 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr2REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 26 more)] ===
[2021-11-13 18:13:01,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:13:01,831 INFO L85 PathProgramCache]: Analyzing trace with hash -523138922, now seen corresponding path program 1 times
[2021-11-13 18:13:01,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:13:01,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205857972]
[2021-11-13 18:13:01,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:13:01,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:13:01,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:13:01,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-11-13 18:13:01,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:13:01,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:13:01,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:13:01,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205857972]
[2021-11-13 18:13:01,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205857972] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:13:01,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:13:01,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-13 18:13:01,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313991389]
[2021-11-13 18:13:01,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:13:01,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-13 18:13:01,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:13:01,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-13 18:13:01,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-11-13 18:13:01,907 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 18:13:02,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:13:02,010 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions.
[2021-11-13 18:13:02,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-11-13 18:13:02,011 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 8
[2021-11-13 18:13:02,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:13:02,012 INFO L225 Difference]: With dead ends: 46
[2021-11-13 18:13:02,012 INFO L226 Difference]: Without dead ends: 46
[2021-11-13 18:13:02,013 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 18:13:02,015 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 40 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 72.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.97ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 91.14ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:13:02,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 26 Invalid, 81 Unknown, 0 Unchecked, 2.97ms Time], IncrementalHoareTripleChecker [4 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 91.14ms Time]
[2021-11-13 18:13:02,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states.
[2021-11-13 18:13:02,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46.
[2021-11-13 18:13:02,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 24 states have (on average 1.9166666666666667) internal successors, (46), 42 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 18:13:02,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions.
[2021-11-13 18:13:02,025 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 8
[2021-11-13 18:13:02,025 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:13:02,025 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions.
[2021-11-13 18:13:02,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 18:13:02,026 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions.
[2021-11-13 18:13:02,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2021-11-13 18:13:02,027 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:13:02,027 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:13:02,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-11-13 18:13:02,028 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 26 more)] ===
[2021-11-13 18:13:02,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:13:02,029 INFO L85 PathProgramCache]: Analyzing trace with hash -523138921, now seen corresponding path program 1 times
[2021-11-13 18:13:02,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:13:02,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675969791]
[2021-11-13 18:13:02,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:13:02,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:13:02,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:13:02,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-11-13 18:13:02,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:13:02,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:13:02,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:13:02,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675969791]
[2021-11-13 18:13:02,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675969791] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:13:02,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:13:02,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-13 18:13:02,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940894643]
[2021-11-13 18:13:02,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:13:02,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-13 18:13:02,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:13:02,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-13 18:13:02,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-11-13 18:13:02,117 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 18:13:02,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:13:02,207 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions.
[2021-11-13 18:13:02,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-11-13 18:13:02,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 8
[2021-11-13 18:13:02,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:13:02,209 INFO L225 Difference]: With dead ends: 42
[2021-11-13 18:13:02,209 INFO L226 Difference]: Without dead ends: 42
[2021-11-13 18:13:02,210 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 18:13:02,212 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 38 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.11ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 80.20ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:13:02,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 27 Invalid, 70 Unknown, 0 Unchecked, 2.11ms Time], IncrementalHoareTripleChecker [4 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 80.20ms Time]
[2021-11-13 18:13:02,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states.
[2021-11-13 18:13:02,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42.
[2021-11-13 18:13:02,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 24 states have (on average 1.75) internal successors, (42), 38 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 18:13:02,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions.
[2021-11-13 18:13:02,220 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 8
[2021-11-13 18:13:02,221 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:13:02,221 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions.
[2021-11-13 18:13:02,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 18:13:02,221 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions.
[2021-11-13 18:13:02,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2021-11-13 18:13:02,222 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:13:02,222 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:13:02,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-11-13 18:13:02,223 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr4REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 26 more)] ===
[2021-11-13 18:13:02,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:13:02,224 INFO L85 PathProgramCache]: Analyzing trace with hash 962562584, now seen corresponding path program 1 times
[2021-11-13 18:13:02,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:13:02,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369502827]
[2021-11-13 18:13:02,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:13:02,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:13:02,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:13:02,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-11-13 18:13:02,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:13:02,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:13:02,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:13:02,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369502827]
[2021-11-13 18:13:02,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369502827] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:13:02,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:13:02,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-13 18:13:02,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026798410]
[2021-11-13 18:13:02,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:13:02,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-13 18:13:02,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:13:02,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-13 18:13:02,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-11-13 18:13:02,291 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 18:13:02,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:13:02,373 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions.
[2021-11-13 18:13:02,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-11-13 18:13:02,374 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 9
[2021-11-13 18:13:02,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:13:02,375 INFO L225 Difference]: With dead ends: 38
[2021-11-13 18:13:02,375 INFO L226 Difference]: Without dead ends: 38
[2021-11-13 18:13:02,376 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 18:13:02,377 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 31 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.90ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 73.84ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:13:02,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 22 Invalid, 69 Unknown, 0 Unchecked, 1.90ms Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 73.84ms Time]
[2021-11-13 18:13:02,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states.
[2021-11-13 18:13:02,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38.
[2021-11-13 18:13:02,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 34 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 18:13:02,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions.
[2021-11-13 18:13:02,384 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 9
[2021-11-13 18:13:02,385 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:13:02,385 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions.
[2021-11-13 18:13:02,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 18:13:02,386 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions.
[2021-11-13 18:13:02,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2021-11-13 18:13:02,387 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:13:02,387 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:13:02,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2021-11-13 18:13:02,387 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr5REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 26 more)] ===
[2021-11-13 18:13:02,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:13:02,388 INFO L85 PathProgramCache]: Analyzing trace with hash 962562585, now seen corresponding path program 1 times
[2021-11-13 18:13:02,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:13:02,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464276909]
[2021-11-13 18:13:02,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:13:02,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:13:02,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:13:02,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-11-13 18:13:02,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:13:02,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:13:02,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:13:02,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464276909]
[2021-11-13 18:13:02,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464276909] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:13:02,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:13:02,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-13 18:13:02,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351201579]
[2021-11-13 18:13:02,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:13:02,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-13 18:13:02,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:13:02,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-13 18:13:02,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-11-13 18:13:02,463 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 18:13:02,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:13:02,539 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions.
[2021-11-13 18:13:02,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-11-13 18:13:02,540 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 9
[2021-11-13 18:13:02,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:13:02,541 INFO L225 Difference]: With dead ends: 34
[2021-11-13 18:13:02,541 INFO L226 Difference]: Without dead ends: 34
[2021-11-13 18:13:02,542 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 18:13:02,543 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 29 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.98ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.51ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:13:02,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 23 Invalid, 58 Unknown, 0 Unchecked, 1.98ms Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 68.51ms Time]
[2021-11-13 18:13:02,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states.
[2021-11-13 18:13:02,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34.
[2021-11-13 18:13:02,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 30 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 18:13:02,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions.
[2021-11-13 18:13:02,574 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 9
[2021-11-13 18:13:02,574 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:13:02,574 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions.
[2021-11-13 18:13:02,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 18:13:02,575 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions.
[2021-11-13 18:13:02,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2021-11-13 18:13:02,576 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:13:02,576 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:13:02,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2021-11-13 18:13:02,576 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr6REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 26 more)] ===
[2021-11-13 18:13:02,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:13:02,577 INFO L85 PathProgramCache]: Analyzing trace with hash -225330983, now seen corresponding path program 1 times
[2021-11-13 18:13:02,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:13:02,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310284010]
[2021-11-13 18:13:02,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:13:02,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:13:02,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:13:02,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-11-13 18:13:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:13:02,629 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 18:13:02,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:13:02,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310284010]
[2021-11-13 18:13:02,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310284010] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:13:02,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:13:02,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-13 18:13:02,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960732253]
[2021-11-13 18:13:02,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:13:02,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-13 18:13:02,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:13:02,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-13 18:13:02,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-11-13 18:13:02,633 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. 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 18:13:02,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:13:02,699 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions.
[2021-11-13 18:13:02,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-11-13 18:13:02,700 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 18:13:02,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:13:02,701 INFO L225 Difference]: With dead ends: 31
[2021-11-13 18:13:02,701 INFO L226 Difference]: Without dead ends: 31
[2021-11-13 18:13:02,702 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 18:13:02,703 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 23 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.42ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.69ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:13:02,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 19 Invalid, 57 Unknown, 0 Unchecked, 1.42ms Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 59.69ms Time]
[2021-11-13 18:13:02,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2021-11-13 18:13:02,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31.
[2021-11-13 18:13:02,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 27 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 18:13:02,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions.
[2021-11-13 18:13:02,709 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 10
[2021-11-13 18:13:02,710 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:13:02,710 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions.
[2021-11-13 18:13:02,710 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 18:13:02,710 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions.
[2021-11-13 18:13:02,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2021-11-13 18:13:02,711 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:13:02,711 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:13:02,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2021-11-13 18:13:02,712 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr7REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 26 more)] ===
[2021-11-13 18:13:02,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:13:02,713 INFO L85 PathProgramCache]: Analyzing trace with hash -225330982, now seen corresponding path program 1 times
[2021-11-13 18:13:02,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:13:02,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910500126]
[2021-11-13 18:13:02,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:13:02,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:13:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:13:02,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-11-13 18:13:02,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:13:02,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:13:02,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:13:02,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910500126]
[2021-11-13 18:13:02,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910500126] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:13:02,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:13:02,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-11-13 18:13:02,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65773286]
[2021-11-13 18:13:02,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:13:02,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-11-13 18:13:02,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:13:02,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-11-13 18:13:02,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-11-13 18:13:02,839 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. 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 18:13:02,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:13:02,907 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions.
[2021-11-13 18:13:02,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2021-11-13 18:13:02,908 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 18:13:02,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:13:02,910 INFO L225 Difference]: With dead ends: 28
[2021-11-13 18:13:02,910 INFO L226 Difference]: Without dead ends: 28
[2021-11-13 18:13:02,910 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 18:13:02,912 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 22 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.80ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61.61ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:13:02,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 20 Invalid, 48 Unknown, 0 Unchecked, 1.80ms Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 61.61ms Time]
[2021-11-13 18:13:02,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states.
[2021-11-13 18:13:02,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28.
[2021-11-13 18:13:02,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 18:13:02,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions.
[2021-11-13 18:13:02,930 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 10
[2021-11-13 18:13:02,931 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:13:02,931 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions.
[2021-11-13 18:13:02,931 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 18:13:02,931 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions.
[2021-11-13 18:13:02,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2021-11-13 18:13:02,935 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:13:02,936 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:13:02,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2021-11-13 18:13:02,938 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr30ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 26 more)] ===
[2021-11-13 18:13:02,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:13:02,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1860435007, now seen corresponding path program 1 times
[2021-11-13 18:13:02,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:13:02,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830209440]
[2021-11-13 18:13:02,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:13:02,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:13:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:13:03,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-11-13 18:13:03,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:13:03,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:13:03,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:13:03,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830209440]
[2021-11-13 18:13:03,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830209440] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:13:03,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2021-11-13 18:13:03,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-11-13 18:13:03,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276630165]
[2021-11-13 18:13:03,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:13:03,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-11-13 18:13:03,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:13:03,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-11-13 18:13:03,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2021-11-13 18:13:03,051 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 18:13:03,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:13:03,154 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions.
[2021-11-13 18:13:03,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-11-13 18:13:03,155 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14
[2021-11-13 18:13:03,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:13:03,156 INFO L225 Difference]: With dead ends: 43
[2021-11-13 18:13:03,156 INFO L226 Difference]: Without dead ends: 43
[2021-11-13 18:13:03,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2021-11-13 18:13:03,160 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 10 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.06ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 78.28ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:13:03,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 49 Invalid, 77 Unknown, 0 Unchecked, 3.06ms Time], IncrementalHoareTripleChecker [5 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 78.28ms Time]
[2021-11-13 18:13:03,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2021-11-13 18:13:03,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 30.
[2021-11-13 18:13:03,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 18:13:03,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions.
[2021-11-13 18:13:03,173 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 14
[2021-11-13 18:13:03,173 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:13:03,173 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions.
[2021-11-13 18:13:03,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 18:13:03,174 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions.
[2021-11-13 18:13:03,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2021-11-13 18:13:03,175 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:13:03,176 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:13:03,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2021-11-13 18:13:03,176 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr30ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 26 more)] ===
[2021-11-13 18:13:03,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:13:03,177 INFO L85 PathProgramCache]: Analyzing trace with hash 988980839, now seen corresponding path program 1 times
[2021-11-13 18:13:03,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:13:03,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022292770]
[2021-11-13 18:13:03,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:13:03,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:13:03,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:13:03,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-11-13 18:13:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:13:03,410 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 18:13:03,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:13:03,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022292770]
[2021-11-13 18:13:03,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022292770] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 18:13:03,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422423393]
[2021-11-13 18:13:03,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:13:03,413 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:13:03,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:13:03,416 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:13:03,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2021-11-13 18:13:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:13:03,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 10 conjunts are in the unsatisfiable core
[2021-11-13 18:13:03,553 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:13:03,662 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 18 treesize of output 16
[2021-11-13 18:13:03,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2021-11-13 18:13:03,882 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size
[2021-11-13 18:13:03,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 31
[2021-11-13 18:13:04,023 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size
[2021-11-13 18:13:04,024 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 26 treesize of output 14
[2021-11-13 18:13:04,044 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 18:13:04,044 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:13:04,847 WARN L838 $PredicateComparison]: unable to prove that (forall ((main_~x0~0.offset Int)) (= 0 (select (select (store |c_#memory_int| c_main_~x0~0.base (store (select |c_#memory_int| c_main_~x0~0.base) main_~x0~0.offset 1)) c_main_~x3~0.base) c_main_~x3~0.offset))) is different from false
[2021-11-13 18:13:04,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked.
[2021-11-13 18:13:04,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422423393] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:13:04,958 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-11-13 18:13:04,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 9
[2021-11-13 18:13:04,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617195382]
[2021-11-13 18:13:04,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:13:04,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2021-11-13 18:13:04,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:13:04,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2021-11-13 18:13:04,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=41, Unknown=1, NotChecked=12, Total=72
[2021-11-13 18:13:04,962 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 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 18:13:05,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:13:05,801 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions.
[2021-11-13 18:13:05,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2021-11-13 18:13:05,802 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 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 19
[2021-11-13 18:13:05,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:13:05,802 INFO L225 Difference]: With dead ends: 45
[2021-11-13 18:13:05,803 INFO L226 Difference]: Without dead ends: 45
[2021-11-13 18:13:05,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=30, Invalid=62, Unknown=2, NotChecked=16, Total=110
[2021-11-13 18:13:05,804 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 49 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 76.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.72ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 94.50ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:13:05,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 59 Invalid, 133 Unknown, 0 Unchecked, 2.72ms Time], IncrementalHoareTripleChecker [18 Valid, 77 Invalid, 0 Unknown, 38 Unchecked, 94.50ms Time]
[2021-11-13 18:13:05,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2021-11-13 18:13:05,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 33.
[2021-11-13 18:13:05,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 18:13:05,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions.
[2021-11-13 18:13:05,808 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 19
[2021-11-13 18:13:05,809 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:13:05,809 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions.
[2021-11-13 18:13:05,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 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 18:13:05,809 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions.
[2021-11-13 18:13:05,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2021-11-13 18:13:05,810 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:13:05,810 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, 1]
[2021-11-13 18:13:05,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2021-11-13 18:13:06,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:13:06,023 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr30ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 26 more)] ===
[2021-11-13 18:13:06,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:13:06,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1875845268, now seen corresponding path program 1 times
[2021-11-13 18:13:06,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:13:06,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407083875]
[2021-11-13 18:13:06,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:13:06,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:13:06,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:13:06,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-11-13 18:13:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:13:06,300 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 18:13:06,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:13:06,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407083875]
[2021-11-13 18:13:06,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407083875] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 18:13:06,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500864509]
[2021-11-13 18:13:06,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:13:06,301 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:13:06,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:13:06,303 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:13:06,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2021-11-13 18:13:06,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:13:06,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 22 conjunts are in the unsatisfiable core
[2021-11-13 18:13:06,376 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:13:06,411 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 18 treesize of output 16
[2021-11-13 18:13:06,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2021-11-13 18:13:06,656 INFO L354 Elim1Store]: treesize reduction 20, result has 37.5 percent of original size
[2021-11-13 18:13:06,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 26
[2021-11-13 18:13:06,858 INFO L354 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size
[2021-11-13 18:13:06,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 44
[2021-11-13 18:13:07,106 INFO L354 Elim1Store]: treesize reduction 21, result has 36.4 percent of original size
[2021-11-13 18:13:07,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 41
[2021-11-13 18:13:07,120 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 18:13:07,120 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:13:07,950 WARN L838 $PredicateComparison]: unable to prove that (forall ((main_~x1~0.offset Int)) (= (select (select (store |c_#memory_int| c_main_~x1~0.base (store (select |c_#memory_int| c_main_~x1~0.base) main_~x1~0.offset 1)) c_main_~x3~0.base) c_main_~x3~0.offset) 0)) is different from false
[2021-11-13 18:13:08,983 WARN L838 $PredicateComparison]: unable to prove that (forall ((main_~x1~0.offset Int)) (= (select (select (let ((.cse0 (store |c_#memory_int| c_main_~x0~0.base (store (select |c_#memory_int| c_main_~x0~0.base) c_main_~x0~0.offset 0)))) (store .cse0 c_main_~x1~0.base (store (select .cse0 c_main_~x1~0.base) main_~x1~0.offset 1))) c_main_~x3~0.base) c_main_~x3~0.offset) 0)) is different from false
[2021-11-13 18:13:23,840 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 33 treesize of output 29
[2021-11-13 18:13:23,914 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 18:13:23,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500864509] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:13:23,915 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-11-13 18:13:23,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 21
[2021-11-13 18:13:23,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809334779]
[2021-11-13 18:13:23,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:13:23,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2021-11-13 18:13:23,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:13:23,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2021-11-13 18:13:23,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=243, Unknown=9, NotChecked=70, Total=420
[2021-11-13 18:13:23,917 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 20 states have internal predecessors, (47), 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 18:13:26,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:13:26,379 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions.
[2021-11-13 18:13:26,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2021-11-13 18:13:26,379 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 20 states have internal predecessors, (47), 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 22
[2021-11-13 18:13:26,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:13:26,380 INFO L225 Difference]: With dead ends: 47
[2021-11-13 18:13:26,381 INFO L226 Difference]: Without dead ends: 47
[2021-11-13 18:13:26,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=124, Invalid=293, Unknown=11, NotChecked=78, Total=506
[2021-11-13 18:13:26,382 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 28 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 117.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.70ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 100 IncrementalHoareTripleChecker+Unchecked, 137.00ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:13:26,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 174 Invalid, 240 Unknown, 0 Unchecked, 2.70ms Time], IncrementalHoareTripleChecker [14 Valid, 126 Invalid, 0 Unknown, 100 Unchecked, 137.00ms Time]
[2021-11-13 18:13:26,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2021-11-13 18:13:26,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43.
[2021-11-13 18:13:26,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 39 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 18:13:26,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions.
[2021-11-13 18:13:26,388 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 22
[2021-11-13 18:13:26,388 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:13:26,388 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions.
[2021-11-13 18:13:26,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.238095238095238) internal successors, (47), 20 states have internal predecessors, (47), 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 18:13:26,389 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions.
[2021-11-13 18:13:26,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2021-11-13 18:13:26,390 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:13:26,390 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, 1, 1, 1, 1]
[2021-11-13 18:13:26,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2021-11-13 18:13:26,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:13:26,607 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr30ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 26 more)] ===
[2021-11-13 18:13:26,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:13:26,608 INFO L85 PathProgramCache]: Analyzing trace with hash -230868331, now seen corresponding path program 1 times
[2021-11-13 18:13:26,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:13:26,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756110016]
[2021-11-13 18:13:26,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:13:26,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:13:26,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:13:26,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-11-13 18:13:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:13:26,946 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 18:13:26,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:13:26,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756110016]
[2021-11-13 18:13:26,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756110016] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 18:13:26,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892945064]
[2021-11-13 18:13:26,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:13:26,947 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:13:26,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:13:26,949 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:13:26,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2021-11-13 18:13:27,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:13:27,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 27 conjunts are in the unsatisfiable core
[2021-11-13 18:13:27,023 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:13:27,089 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 18 treesize of output 16
[2021-11-13 18:13:27,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2021-11-13 18:13:27,379 INFO L354 Elim1Store]: treesize reduction 20, result has 37.5 percent of original size
[2021-11-13 18:13:27,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 26
[2021-11-13 18:13:27,557 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size
[2021-11-13 18:13:27,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32
[2021-11-13 18:13:27,726 INFO L354 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size
[2021-11-13 18:13:27,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 44
[2021-11-13 18:13:31,777 INFO L354 Elim1Store]: treesize reduction 21, result has 36.4 percent of original size
[2021-11-13 18:13:31,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 41
[2021-11-13 18:13:31,788 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 18:13:31,788 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:13:35,476 WARN L838 $PredicateComparison]: unable to prove that (forall ((main_~x1~0.base Int) (main_~x2~0.offset Int)) (= 0 (select (select (let ((.cse0 (store |c_#memory_int| main_~x1~0.base (store (select |c_#memory_int| main_~x1~0.base) c_main_~x1~0.offset 0)))) (store .cse0 c_main_~x2~0.base (store (select .cse0 c_main_~x2~0.base) main_~x2~0.offset 1))) c_main_~x3~0.base) c_main_~x3~0.offset))) is different from false
[2021-11-13 18:13:37,501 WARN L838 $PredicateComparison]: unable to prove that (forall ((main_~x1~0.base Int) (main_~x2~0.offset Int)) (= (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| c_main_~x0~0.base (store (select |c_#memory_int| c_main_~x0~0.base) c_main_~x0~0.offset 0)))) (store .cse1 main_~x1~0.base (store (select .cse1 main_~x1~0.base) c_main_~x1~0.offset 0))))) (store .cse0 c_main_~x2~0.base (store (select .cse0 c_main_~x2~0.base) main_~x2~0.offset 1))) c_main_~x3~0.base) c_main_~x3~0.offset) 0)) is different from false
[2021-11-13 18:13:57,827 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 33 treesize of output 29
[2021-11-13 18:13:58,566 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 18:13:58,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892945064] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:13:58,567 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-11-13 18:13:58,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 24
[2021-11-13 18:13:58,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909839246]
[2021-11-13 18:13:58,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:13:58,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2021-11-13 18:13:58,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:13:58,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2021-11-13 18:13:58,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=345, Unknown=16, NotChecked=82, Total=552
[2021-11-13 18:13:58,569 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 23 states have internal predecessors, (56), 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 18:14:04,182 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| c_main_~x0~0.base))) (and (not (= (select .cse0 c_main_~x0~0.offset) 0)) (not (= c_main_~x2~0.base c_main_~x3~0.base)) (not (= c_main_~x3~0.base c_main_~x1~0.base)) (= c_main_~x0~0.offset 0) (= (select (select |c_#memory_int| c_main_~x3~0.base) c_main_~x3~0.offset) 0) (= c_main_~x1~0.offset 0) (= (select (select (store |c_#memory_int| c_main_~x0~0.base (store .cse0 c_main_~x0~0.offset 0)) c_main_~x3~0.base) c_main_~x3~0.offset) 0) (= c_main_~x3~0.offset 0) (forall ((main_~x1~0.base Int) (main_~x2~0.offset Int)) (= (select (select (let ((.cse1 (let ((.cse2 (store |c_#memory_int| c_main_~x0~0.base (store (select |c_#memory_int| c_main_~x0~0.base) c_main_~x0~0.offset 0)))) (store .cse2 main_~x1~0.base (store (select .cse2 main_~x1~0.base) c_main_~x1~0.offset 0))))) (store .cse1 c_main_~x2~0.base (store (select .cse1 c_main_~x2~0.base) main_~x2~0.offset 1))) c_main_~x3~0.base) c_main_~x3~0.offset) 0)) (not (= c_main_~x0~0.base c_main_~x3~0.base)))) is different from false
[2021-11-13 18:14:06,202 WARN L838 $PredicateComparison]: unable to prove that (and (not (= c_main_~x2~0.base c_main_~x3~0.base)) (not (= c_main_~x3~0.base c_main_~x1~0.base)) (= (select (select |c_#memory_int| c_main_~x3~0.base) c_main_~x3~0.offset) 0) (= c_main_~x1~0.offset 0) (= (select (select (store |c_#memory_int| c_main_~x1~0.base (store (select |c_#memory_int| c_main_~x1~0.base) c_main_~x1~0.offset 0)) c_main_~x3~0.base) c_main_~x3~0.offset) 0) (= c_main_~x3~0.offset 0) (forall ((main_~x1~0.base Int) (main_~x2~0.offset Int)) (= 0 (select (select (let ((.cse0 (store |c_#memory_int| main_~x1~0.base (store (select |c_#memory_int| main_~x1~0.base) c_main_~x1~0.offset 0)))) (store .cse0 c_main_~x2~0.base (store (select .cse0 c_main_~x2~0.base) main_~x2~0.offset 1))) c_main_~x3~0.base) c_main_~x3~0.offset))) (exists ((main_~x0~0.base Int)) (and (not (= main_~x0~0.base c_main_~x3~0.base)) (= (select (select |c_#memory_int| main_~x0~0.base) 0) 0)))) is different from false
[2021-11-13 18:14:06,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:14:06,220 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions.
[2021-11-13 18:14:06,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2021-11-13 18:14:06,221 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 23 states have internal predecessors, (56), 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 25
[2021-11-13 18:14:06,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:14:06,222 INFO L225 Difference]: With dead ends: 50
[2021-11-13 18:14:06,222 INFO L226 Difference]: Without dead ends: 50
[2021-11-13 18:14:06,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 38.3s TimeCoverageRelationStatistics Valid=162, Invalid=483, Unknown=21, NotChecked=204, Total=870
[2021-11-13 18:14:06,225 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 8 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.45ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 77 IncrementalHoareTripleChecker+Unchecked, 45.76ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:14:06,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 125 Invalid, 122 Unknown, 0 Unchecked, 1.45ms Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 77 Unchecked, 45.76ms Time]
[2021-11-13 18:14:06,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2021-11-13 18:14:06,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47.
[2021-11-13 18:14:06,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 43 states have (on average 1.186046511627907) internal successors, (51), 43 states have internal predecessors, (51), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 18:14:06,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions.
[2021-11-13 18:14:06,231 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 25
[2021-11-13 18:14:06,232 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:14:06,232 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions.
[2021-11-13 18:14:06,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 23 states have internal predecessors, (56), 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 18:14:06,232 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions.
[2021-11-13 18:14:06,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2021-11-13 18:14:06,234 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:14:06,234 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, 1, 1, 1, 1, 1]
[2021-11-13 18:14:06,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2021-11-13 18:14:06,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2021-11-13 18:14:06,439 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr30ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 26 more)] ===
[2021-11-13 18:14:06,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:14:06,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1764690337, now seen corresponding path program 1 times
[2021-11-13 18:14:06,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:14:06,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329609640]
[2021-11-13 18:14:06,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:14:06,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:14:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:14:06,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-11-13 18:14:06,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:14:06,828 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 18:14:06,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:14:06,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329609640]
[2021-11-13 18:14:06,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329609640] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 18:14:06,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724425670]
[2021-11-13 18:14:06,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:14:06,829 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:14:06,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:14:06,830 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:14:06,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2021-11-13 18:14:06,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:14:06,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 23 conjunts are in the unsatisfiable core
[2021-11-13 18:14:06,895 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:14:06,991 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 11 treesize of output 7
[2021-11-13 18:14:07,053 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size
[2021-11-13 18:14:07,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18
[2021-11-13 18:14:07,200 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size
[2021-11-13 18:14:07,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18
[2021-11-13 18:14:07,307 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size
[2021-11-13 18:14:07,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18
[2021-11-13 18:14:07,354 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 15 treesize of output 7
[2021-11-13 18:14:07,387 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 18:14:07,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-11-13 18:14:07,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724425670] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:14:07,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2021-11-13 18:14:07,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15
[2021-11-13 18:14:07,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144672495]
[2021-11-13 18:14:07,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:14:07,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2021-11-13 18:14:07,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:14:07,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2021-11-13 18:14:07,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210
[2021-11-13 18:14:07,391 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 18:14:07,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:14:07,483 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions.
[2021-11-13 18:14:07,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-11-13 18:14:07,484 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26
[2021-11-13 18:14:07,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:14:07,484 INFO L225 Difference]: With dead ends: 48
[2021-11-13 18:14:07,485 INFO L226 Difference]: Without dead ends: 48
[2021-11-13 18:14:07,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240
[2021-11-13 18:14:07,486 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 60 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.08ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72.04ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:14:07,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 49 Invalid, 74 Unknown, 0 Unchecked, 1.08ms Time], IncrementalHoareTripleChecker [28 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 72.04ms Time]
[2021-11-13 18:14:07,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states.
[2021-11-13 18:14:07,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47.
[2021-11-13 18:14:07,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 43 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 18:14:07,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions.
[2021-11-13 18:14:07,492 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 26
[2021-11-13 18:14:07,492 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:14:07,492 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions.
[2021-11-13 18:14:07,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 18:14:07,493 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions.
[2021-11-13 18:14:07,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2021-11-13 18:14:07,494 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:14:07,494 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:14:07,526 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2021-11-13 18:14:07,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2021-11-13 18:14:07,695 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr30ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 26 more)] ===
[2021-11-13 18:14:07,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:14:07,695 INFO L85 PathProgramCache]: Analyzing trace with hash -364567876, now seen corresponding path program 1 times
[2021-11-13 18:14:07,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:14:07,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447422474]
[2021-11-13 18:14:07,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:14:07,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:14:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:14:08,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-11-13 18:14:08,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:14:08,232 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:14:08,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:14:08,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447422474]
[2021-11-13 18:14:08,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447422474] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 18:14:08,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244067201]
[2021-11-13 18:14:08,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:14:08,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:14:08,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:14:08,235 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:14:08,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2021-11-13 18:14:08,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:14:08,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 23 conjunts are in the unsatisfiable core
[2021-11-13 18:14:08,306 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:14:08,337 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 18 treesize of output 16
[2021-11-13 18:14:08,474 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 11 treesize of output 7
[2021-11-13 18:14:08,679 INFO L354 Elim1Store]: treesize reduction 20, result has 37.5 percent of original size
[2021-11-13 18:14:08,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 25
[2021-11-13 18:14:08,823 INFO L354 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size
[2021-11-13 18:14:08,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 44
[2021-11-13 18:14:09,772 INFO L354 Elim1Store]: treesize reduction 21, result has 36.4 percent of original size
[2021-11-13 18:14:09,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 41
[2021-11-13 18:14:09,785 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:14:09,785 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2021-11-13 18:14:17,343 WARN L838 $PredicateComparison]: unable to prove that (forall ((main_~x1~0.offset Int)) (= (select (select (let ((.cse0 (store |c_#memory_int| c_main_~x0~0.base (store (select |c_#memory_int| c_main_~x0~0.base) c_main_~x0~0.offset 0)))) (store .cse0 c_main_~x1~0.base (store (select .cse0 c_main_~x1~0.base) main_~x1~0.offset 1))) c_main_~x3~0.base) c_main_~x3~0.offset) 0)) is different from false
[2021-11-13 18:14:19,506 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 58 treesize of output 50
[2021-11-13 18:14:20,192 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked.
[2021-11-13 18:14:20,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244067201] provided 0 perfect and 2 imperfect interpolant sequences
[2021-11-13 18:14:20,192 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2021-11-13 18:14:20,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 24
[2021-11-13 18:14:20,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716551291]
[2021-11-13 18:14:20,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2021-11-13 18:14:20,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states
[2021-11-13 18:14:20,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:14:20,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2021-11-13 18:14:20,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=389, Unknown=11, NotChecked=42, Total=552
[2021-11-13 18:14:20,194 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 23 states have internal predecessors, (62), 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 18:14:32,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:14:32,583 INFO L93 Difference]: Finished difference Result 95 states and 112 transitions.
[2021-11-13 18:14:32,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states.
[2021-11-13 18:14:32,584 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 23 states have internal predecessors, (62), 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 27
[2021-11-13 18:14:32,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:14:32,585 INFO L225 Difference]: With dead ends: 95
[2021-11-13 18:14:32,585 INFO L226 Difference]: Without dead ends: 95
[2021-11-13 18:14:32,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 46 SyntacticMatches, 7 SemanticMatches, 39 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 23.5s TimeCoverageRelationStatistics Valid=400, Invalid=1148, Unknown=16, NotChecked=76, Total=1640
[2021-11-13 18:14:32,587 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 52 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 168.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.05ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 192 IncrementalHoareTripleChecker+Unchecked, 193.27ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:14:32,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 151 Invalid, 430 Unknown, 0 Unchecked, 3.05ms Time], IncrementalHoareTripleChecker [29 Valid, 209 Invalid, 0 Unknown, 192 Unchecked, 193.27ms Time]
[2021-11-13 18:14:32,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states.
[2021-11-13 18:14:32,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 78.
[2021-11-13 18:14:32,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 74 states have (on average 1.2162162162162162) internal successors, (90), 74 states have internal predecessors, (90), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)
[2021-11-13 18:14:32,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 93 transitions.
[2021-11-13 18:14:32,594 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 93 transitions. Word has length 27
[2021-11-13 18:14:32,595 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:14:32,595 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 93 transitions.
[2021-11-13 18:14:32,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 23 states have internal predecessors, (62), 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 18:14:32,596 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 93 transitions.
[2021-11-13 18:14:32,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2021-11-13 18:14:32,597 INFO L506 BasicCegarLoop]: Found error trace
[2021-11-13 18:14:32,597 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:14:32,625 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2021-11-13 18:14:32,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2021-11-13 18:14:32,811 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr30ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 26 more)] ===
[2021-11-13 18:14:32,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2021-11-13 18:14:32,811 INFO L85 PathProgramCache]: Analyzing trace with hash 342486834, now seen corresponding path program 2 times
[2021-11-13 18:14:32,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-11-13 18:14:32,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630858659]
[2021-11-13 18:14:32,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-11-13 18:14:32,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-11-13 18:14:32,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:14:33,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2021-11-13 18:14:33,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-11-13 18:14:33,202 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-11-13 18:14:33,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-11-13 18:14:33,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630858659]
[2021-11-13 18:14:33,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630858659] provided 0 perfect and 1 imperfect interpolant sequences
[2021-11-13 18:14:33,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687669583]
[2021-11-13 18:14:33,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-11-13 18:14:33,203 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:14:33,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y/z3
[2021-11-13 18:14:33,211 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-11-13 18:14:33,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2021-11-13 18:14:33,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2021-11-13 18:14:33,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2021-11-13 18:14:33,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 16 conjunts are in the unsatisfiable core
[2021-11-13 18:14:33,271 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2021-11-13 18:14:33,925 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2021-11-13 18:14:33,925 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2021-11-13 18:14:33,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687669583] provided 1 perfect and 0 imperfect interpolant sequences
[2021-11-13 18:14:33,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2021-11-13 18:14:33,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 15
[2021-11-13 18:14:33,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534766843]
[2021-11-13 18:14:33,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2021-11-13 18:14:33,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-11-13 18:14:33,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-11-13 18:14:33,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-11-13 18:14:33,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210
[2021-11-13 18:14:33,927 INFO L87 Difference]: Start difference. First operand 78 states and 93 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 18:14:33,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2021-11-13 18:14:33,969 INFO L93 Difference]: Finished difference Result 77 states and 92 transitions.
[2021-11-13 18:14:33,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2021-11-13 18:14:33,969 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 27
[2021-11-13 18:14:33,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2021-11-13 18:14:33,969 INFO L225 Difference]: With dead ends: 77
[2021-11-13 18:14:33,969 INFO L226 Difference]: Without dead ends: 0
[2021-11-13 18:14:33,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210
[2021-11-13 18:14:33,971 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 8 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.41ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 39.73ms IncrementalHoareTripleChecker+Time
[2021-11-13 18:14:33,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 24 Invalid, 43 Unknown, 0 Unchecked, 0.41ms Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 2 Unchecked, 39.73ms Time]
[2021-11-13 18:14:33,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2021-11-13 18:14:33,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2021-11-13 18:14:33,972 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 18:14:33,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2021-11-13 18:14:33,973 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27
[2021-11-13 18:14:33,973 INFO L84 Accepts]: Finished accepts. word is rejected.
[2021-11-13 18:14:33,973 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2021-11-13 18:14:33,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 18:14:33,973 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2021-11-13 18:14:33,974 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2021-11-13 18:14:33,976 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0REQUIRES_VIOLATION (30 of 31 remaining)
[2021-11-13 18:14:33,977 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr1REQUIRES_VIOLATION (29 of 31 remaining)
[2021-11-13 18:14:33,977 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr2REQUIRES_VIOLATION (28 of 31 remaining)
[2021-11-13 18:14:33,977 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr3REQUIRES_VIOLATION (27 of 31 remaining)
[2021-11-13 18:14:33,977 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr4REQUIRES_VIOLATION (26 of 31 remaining)
[2021-11-13 18:14:33,978 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr5REQUIRES_VIOLATION (25 of 31 remaining)
[2021-11-13 18:14:33,978 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr6REQUIRES_VIOLATION (24 of 31 remaining)
[2021-11-13 18:14:33,978 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr7REQUIRES_VIOLATION (23 of 31 remaining)
[2021-11-13 18:14:33,978 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr8REQUIRES_VIOLATION (22 of 31 remaining)
[2021-11-13 18:14:33,978 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr9REQUIRES_VIOLATION (21 of 31 remaining)
[2021-11-13 18:14:33,979 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr10REQUIRES_VIOLATION (20 of 31 remaining)
[2021-11-13 18:14:33,979 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr11REQUIRES_VIOLATION (19 of 31 remaining)
[2021-11-13 18:14:33,979 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr12REQUIRES_VIOLATION (18 of 31 remaining)
[2021-11-13 18:14:33,979 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr13REQUIRES_VIOLATION (17 of 31 remaining)
[2021-11-13 18:14:33,979 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr14REQUIRES_VIOLATION (16 of 31 remaining)
[2021-11-13 18:14:33,980 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr15REQUIRES_VIOLATION (15 of 31 remaining)
[2021-11-13 18:14:33,980 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr16REQUIRES_VIOLATION (14 of 31 remaining)
[2021-11-13 18:14:33,980 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr17REQUIRES_VIOLATION (13 of 31 remaining)
[2021-11-13 18:14:33,980 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr18REQUIRES_VIOLATION (12 of 31 remaining)
[2021-11-13 18:14:33,980 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr19REQUIRES_VIOLATION (11 of 31 remaining)
[2021-11-13 18:14:33,981 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr20REQUIRES_VIOLATION (10 of 31 remaining)
[2021-11-13 18:14:33,981 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr21REQUIRES_VIOLATION (9 of 31 remaining)
[2021-11-13 18:14:33,981 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr22REQUIRES_VIOLATION (8 of 31 remaining)
[2021-11-13 18:14:33,981 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr23REQUIRES_VIOLATION (7 of 31 remaining)
[2021-11-13 18:14:33,981 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr24REQUIRES_VIOLATION (6 of 31 remaining)
[2021-11-13 18:14:33,982 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr25REQUIRES_VIOLATION (5 of 31 remaining)
[2021-11-13 18:14:33,982 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr26REQUIRES_VIOLATION (4 of 31 remaining)
[2021-11-13 18:14:33,982 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr27REQUIRES_VIOLATION (3 of 31 remaining)
[2021-11-13 18:14:33,982 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr28REQUIRES_VIOLATION (2 of 31 remaining)
[2021-11-13 18:14:33,982 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr29REQUIRES_VIOLATION (1 of 31 remaining)
[2021-11-13 18:14:33,983 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr30ENSURES_VIOLATIONMEMORY_LEAK (0 of 31 remaining)
[2021-11-13 18:14:34,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2021-11-13 18:14:34,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-11-13 18:14:34,206 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-11-13 18:14:34,208 INFO L179 ceAbstractionStarter]: Computing trace abstraction results
[2021-11-13 18:14:34,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 06:14:34 BoogieIcfgContainer
[2021-11-13 18:14:34,211 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2021-11-13 18:14:34,211 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2021-11-13 18:14:34,212 INFO L271 PluginConnector]: Initializing Witness Printer...
[2021-11-13 18:14:34,212 INFO L275 PluginConnector]: Witness Printer initialized
[2021-11-13 18:14:34,213 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:13:00" (3/4) ...
[2021-11-13 18:14:34,216 INFO L137 WitnessPrinter]: Generating witness for correct program
[2021-11-13 18:14:34,224 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init
[2021-11-13 18:14:34,225 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main
[2021-11-13 18:14:34,245 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges
[2021-11-13 18:14:34,245 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges
[2021-11-13 18:14:34,245 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges
[2021-11-13 18:14:34,246 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges
[2021-11-13 18:14:34,287 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/bin/uautomizer-YU5uOKAj3y/witness.graphml
[2021-11-13 18:14:34,287 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2021-11-13 18:14:34,288 INFO L158 Benchmark]: Toolchain (without parser) took 94621.97ms. Allocated memory was 98.6MB in the beginning and 163.6MB in the end (delta: 65.0MB). Free memory was 65.9MB in the beginning and 71.8MB in the end (delta: -5.9MB). Peak memory consumption was 57.7MB. Max. memory is 16.1GB.
[2021-11-13 18:14:34,288 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 98.6MB. Free memory is still 54.8MB. There was no memory consumed. Max. memory is 16.1GB.
[2021-11-13 18:14:34,289 INFO L158 Benchmark]: CACSL2BoogieTranslator took 274.94ms. Allocated memory was 98.6MB in the beginning and 136.3MB in the end (delta: 37.7MB). Free memory was 65.7MB in the beginning and 113.1MB in the end (delta: -47.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2021-11-13 18:14:34,289 INFO L158 Benchmark]: Boogie Preprocessor took 38.01ms. Allocated memory is still 136.3MB. Free memory was 113.1MB in the beginning and 111.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB.
[2021-11-13 18:14:34,290 INFO L158 Benchmark]: RCFGBuilder took 645.63ms. Allocated memory is still 136.3MB. Free memory was 111.7MB in the beginning and 99.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
[2021-11-13 18:14:34,290 INFO L158 Benchmark]: TraceAbstraction took 93577.41ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 98.4MB in the beginning and 74.9MB in the end (delta: 23.5MB). Peak memory consumption was 52.3MB. Max. memory is 16.1GB.
[2021-11-13 18:14:34,291 INFO L158 Benchmark]: Witness Printer took 75.85ms. Allocated memory is still 163.6MB. Free memory was 74.9MB in the beginning and 71.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2021-11-13 18:14:34,294 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.38ms. Allocated memory is still 98.6MB. Free memory is still 54.8MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 274.94ms. Allocated memory was 98.6MB in the beginning and 136.3MB in the end (delta: 37.7MB). Free memory was 65.7MB in the beginning and 113.1MB in the end (delta: -47.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 38.01ms. Allocated memory is still 136.3MB. Free memory was 113.1MB in the beginning and 111.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB.
* RCFGBuilder took 645.63ms. Allocated memory is still 136.3MB. Free memory was 111.7MB in the beginning and 99.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
* TraceAbstraction took 93577.41ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 98.4MB in the beginning and 74.9MB in the end (delta: 23.5MB). Peak memory consumption was 52.3MB. Max. memory is 16.1GB.
* Witness Printer took 75.85ms. Allocated memory is still 163.6MB. Free memory was 74.9MB in the beginning and 71.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: ErrorAutomatonStatistics
NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
- PositiveResult [Line: 11]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 11]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 12]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 12]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 13]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 13]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 14]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 14]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 15]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 15]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 16]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 16]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 17]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 17]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 19]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 19]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 20]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 20]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 21]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 21]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 23]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 23]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 24]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 24]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 25]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 25]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 27]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 27]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 28]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 28]: pointer dereference always succeeds
For all program executions holds that pointer dereference always succeeds at this location
- PositiveResult [Line: 6]: all allocated memory was freed
For all program executions holds that all allocated memory was freed at this location
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 3 procedures, 61 locations, 31 error locations. Started 1 CEGAR loops. OverallTime: 93.5s, OverallIterations: 15, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 24.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 494 SdHoareTripleChecker+Valid, 1386.58ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 494 mSDsluCounter, 834 SdHoareTripleChecker+Invalid, 1129.14ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 409 IncrementalHoareTripleChecker+Unchecked, 581 mSDsCounter, 131 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1141 IncrementalHoareTripleChecker+Invalid, 1681 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 131 mSolverCounterUnsat, 253 mSDtfsCounter, 1141 mSolverCounterSat, 36.79ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 386 GetRequests, 223 SyntacticMatches, 19 SemanticMatches, 144 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 813 ImplicationChecksByTransitivity, 83.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=14, InterpolantAutomatonStates: 108, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 50 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 66.2s InterpolantComputationTime, 374 NumberOfCodeBlocks, 361 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 442 ConstructedInterpolants, 49 QuantifiedInterpolants, 6185 SizeOfPredicates, 86 NumberOfNonLiveVariables, 808 ConjunctsInSsa, 121 ConjunctsInUnsatCore, 25 InterpolantComputations, 11 PerfectInterpolantSequences, 14/62 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
31 specifications checked. All of them hold
RESULT: Ultimate proved your program to be correct!
[2021-11-13 18:14:34,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_588c00be-0167-4d97-8ec0-c2ed297eb2db/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