./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/960521-1_1-1.i --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for memory safety (deref-memtrack)
Using default analysis
Version 2329fc70
Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9be013-f2b6-4f42-a81e-22edf29ef0db/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9be013-f2b6-4f42-a81e-22edf29ef0db/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9be013-f2b6-4f42-a81e-22edf29ef0db/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9be013-f2b6-4f42-a81e-22edf29ef0db/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/960521-1_1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9be013-f2b6-4f42-a81e-22edf29ef0db/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9be013-f2b6-4f42-a81e-22edf29ef0db/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1bdc21b2f61b0d69220994ec3f8dc9d2db928c146bd54c19e0632aa07d01871a
--- Real Ultimate output ---
[0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset.
This is Ultimate 0.2.2-dev-2329fc7
[2022-12-13 16:28:21,502 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2022-12-13 16:28:21,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2022-12-13 16:28:21,524 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-12-13 16:28:21,524 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-12-13 16:28:21,525 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-12-13 16:28:21,527 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-12-13 16:28:21,528 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2022-12-13 16:28:21,530 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-12-13 16:28:21,531 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-12-13 16:28:21,532 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2022-12-13 16:28:21,533 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-12-13 16:28:21,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-12-13 16:28:21,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-12-13 16:28:21,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-12-13 16:28:21,536 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-12-13 16:28:21,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-12-13 16:28:21,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-12-13 16:28:21,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-12-13 16:28:21,542 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2022-12-13 16:28:21,543 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-12-13 16:28:21,544 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-12-13 16:28:21,545 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2022-12-13 16:28:21,546 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-12-13 16:28:21,550 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-12-13 16:28:21,550 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-12-13 16:28:21,551 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-12-13 16:28:21,551 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-12-13 16:28:21,552 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-12-13 16:28:21,553 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-12-13 16:28:21,553 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-12-13 16:28:21,554 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-12-13 16:28:21,555 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-12-13 16:28:21,556 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2022-12-13 16:28:21,557 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-12-13 16:28:21,557 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2022-12-13 16:28:21,558 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-12-13 16:28:21,558 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-12-13 16:28:21,558 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2022-12-13 16:28:21,559 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2022-12-13 16:28:21,560 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2022-12-13 16:28:21,560 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9be013-f2b6-4f42-a81e-22edf29ef0db/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf
[2022-12-13 16:28:21,584 INFO L113 SettingsManager]: Loading preferences was successful
[2022-12-13 16:28:21,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2022-12-13 16:28:21,584 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-12-13 16:28:21,584 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-12-13 16:28:21,585 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-12-13 16:28:21,585 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-12-13 16:28:21,586 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-12-13 16:28:21,586 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2022-12-13 16:28:21,586 INFO L138 SettingsManager]: * Use SBE=true
[2022-12-13 16:28:21,586 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-12-13 16:28:21,587 INFO L138 SettingsManager]: * sizeof long=4
[2022-12-13 16:28:21,587 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false
[2022-12-13 16:28:21,587 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2022-12-13 16:28:21,587 INFO L138 SettingsManager]: * sizeof POINTER=4
[2022-12-13 16:28:21,587 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2022-12-13 16:28:21,588 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2022-12-13 16:28:21,588 INFO L138 SettingsManager]: * Bitprecise bitfields=true
[2022-12-13 16:28:21,588 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2022-12-13 16:28:21,588 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-12-13 16:28:21,588 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2022-12-13 16:28:21,588 INFO L138 SettingsManager]: * sizeof long double=12
[2022-12-13 16:28:21,588 INFO L138 SettingsManager]: * Use constant arrays=true
[2022-12-13 16:28:21,588 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-12-13 16:28:21,588 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2022-12-13 16:28:21,589 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2022-12-13 16:28:21,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-12-13 16:28:21,589 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-12-13 16:28:21,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2022-12-13 16:28:21,589 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2022-12-13 16:28:21,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-12-13 16:28:21,589 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2022-12-13 16:28:21,589 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2022-12-13 16:28:21,590 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2022-12-13 16:28:21,590 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2022-12-13 16:28:21,590 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC
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_ad9be013-f2b6-4f42-a81e-22edf29ef0db/bin/uautomizer-uyxdKDjOR8/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9be013-f2b6-4f42-a81e-22edf29ef0db/bin/uautomizer-uyxdKDjOR8
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1bdc21b2f61b0d69220994ec3f8dc9d2db928c146bd54c19e0632aa07d01871a
[2022-12-13 16:28:21,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2022-12-13 16:28:21,798 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-12-13 16:28:21,800 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-12-13 16:28:21,801 INFO L271 PluginConnector]: Initializing CDTParser...
[2022-12-13 16:28:21,801 INFO L275 PluginConnector]: CDTParser initialized
[2022-12-13 16:28:21,802 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9be013-f2b6-4f42-a81e-22edf29ef0db/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/list-ext-properties/960521-1_1-1.i
[2022-12-13 16:28:24,344 INFO L500 CDTParser]: Created temporary CDT project at NULL
[2022-12-13 16:28:24,562 INFO L351 CDTParser]: Found 1 translation units.
[2022-12-13 16:28:24,562 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9be013-f2b6-4f42-a81e-22edf29ef0db/sv-benchmarks/c/list-ext-properties/960521-1_1-1.i
[2022-12-13 16:28:24,575 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9be013-f2b6-4f42-a81e-22edf29ef0db/bin/uautomizer-uyxdKDjOR8/data/ace1777e8/0c6ae67ae8254799bda1db98538a76be/FLAGce74d544f
[2022-12-13 16:28:24,934 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9be013-f2b6-4f42-a81e-22edf29ef0db/bin/uautomizer-uyxdKDjOR8/data/ace1777e8/0c6ae67ae8254799bda1db98538a76be
[2022-12-13 16:28:24,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-12-13 16:28:24,939 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2022-12-13 16:28:24,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-12-13 16:28:24,941 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-12-13 16:28:24,945 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2022-12-13 16:28:24,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:28:24" (1/1) ...
[2022-12-13 16:28:24,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24e351e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:28:24, skipping insertion in model container
[2022-12-13 16:28:24,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:28:24" (1/1) ...
[2022-12-13 16:28:24,954 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2022-12-13 16:28:24,974 INFO L178 MainTranslator]: Built tables and reachable declarations
[2022-12-13 16:28:25,169 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-12-13 16:28:25,178 INFO L203 MainTranslator]: Completed pre-run
[2022-12-13 16:28:25,210 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-12-13 16:28:25,229 INFO L208 MainTranslator]: Completed translation
[2022-12-13 16:28:25,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:28:25 WrapperNode
[2022-12-13 16:28:25,229 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-12-13 16:28:25,230 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-12-13 16:28:25,230 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-12-13 16:28:25,230 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2022-12-13 16:28:25,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:28:25" (1/1) ...
[2022-12-13 16:28:25,247 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:28:25" (1/1) ...
[2022-12-13 16:28:25,264 INFO L138 Inliner]: procedures = 122, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 75
[2022-12-13 16:28:25,264 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-12-13 16:28:25,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-12-13 16:28:25,265 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2022-12-13 16:28:25,265 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2022-12-13 16:28:25,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:28:25" (1/1) ...
[2022-12-13 16:28:25,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:28:25" (1/1) ...
[2022-12-13 16:28:25,276 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:28:25" (1/1) ...
[2022-12-13 16:28:25,276 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:28:25" (1/1) ...
[2022-12-13 16:28:25,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:28:25" (1/1) ...
[2022-12-13 16:28:25,283 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:28:25" (1/1) ...
[2022-12-13 16:28:25,285 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:28:25" (1/1) ...
[2022-12-13 16:28:25,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:28:25" (1/1) ...
[2022-12-13 16:28:25,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-12-13 16:28:25,290 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-12-13 16:28:25,290 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2022-12-13 16:28:25,290 INFO L275 PluginConnector]: RCFGBuilder initialized
[2022-12-13 16:28:25,291 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:28:25" (1/1) ...
[2022-12-13 16:28:25,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-12-13 16:28:25,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9be013-f2b6-4f42-a81e-22edf29ef0db/bin/uautomizer-uyxdKDjOR8/z3
[2022-12-13 16:28:25,314 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9be013-f2b6-4f42-a81e-22edf29ef0db/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-12-13 16:28:25,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9be013-f2b6-4f42-a81e-22edf29ef0db/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-12-13 16:28:25,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2022-12-13 16:28:25,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2022-12-13 16:28:25,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2022-12-13 16:28:25,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-12-13 16:28:25,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-12-13 16:28:25,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2022-12-13 16:28:25,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-12-13 16:28:25,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-12-13 16:28:25,435 INFO L235 CfgBuilder]: Building ICFG
[2022-12-13 16:28:25,437 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation
[2022-12-13 16:28:25,606 INFO L276 CfgBuilder]: Performing block encoding
[2022-12-13 16:28:25,611 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-12-13 16:28:25,612 INFO L300 CfgBuilder]: Removed 3 assume(true) statements.
[2022-12-13 16:28:25,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:28:25 BoogieIcfgContainer
[2022-12-13 16:28:25,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-12-13 16:28:25,615 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-12-13 16:28:25,615 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2022-12-13 16:28:25,617 INFO L275 PluginConnector]: TraceAbstraction initialized
[2022-12-13 16:28:25,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 04:28:24" (1/3) ...
[2022-12-13 16:28:25,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38efbdbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:28:25, skipping insertion in model container
[2022-12-13 16:28:25,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:28:25" (2/3) ...
[2022-12-13 16:28:25,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38efbdbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:28:25, skipping insertion in model container
[2022-12-13 16:28:25,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:28:25" (3/3) ...
[2022-12-13 16:28:25,620 INFO L112 eAbstractionObserver]: Analyzing ICFG 960521-1_1-1.i
[2022-12-13 16:28:25,634 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-12-13 16:28:25,634 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations.
[2022-12-13 16:28:25,667 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-12-13 16:28:25,671 INFO L357 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=PETRI_NET, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@400475af, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2022-12-13 16:28:25,672 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations.
[2022-12-13 16:28:25,675 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 32 states have (on average 1.875) internal successors, (60), 53 states have internal predecessors, (60), 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)
[2022-12-13 16:28:25,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6
[2022-12-13 16:28:25,679 INFO L187 NwaCegarLoop]: Found error trace
[2022-12-13 16:28:25,680 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1]
[2022-12-13 16:28:25,680 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] ===
[2022-12-13 16:28:25,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 16:28:25,684 INFO L85 PathProgramCache]: Analyzing trace with hash 28702701, now seen corresponding path program 1 times
[2022-12-13 16:28:25,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 16:28:25,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704046270]
[2022-12-13 16:28:25,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 16:28:25,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 16:28:25,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 16:28:25,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 16:28:25,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 16:28:25,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704046270]
[2022-12-13 16:28:25,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704046270] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 16:28:25,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 16:28:25,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-13 16:28:25,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195439981]
[2022-12-13 16:28:25,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 16:28:25,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-12-13 16:28:25,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 16:28:25,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-12-13 16:28:25,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-12-13 16:28:25,855 INFO L87 Difference]: Start difference. First operand has 54 states, 32 states have (on average 1.875) internal successors, (60), 53 states have internal predecessors, (60), 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) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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)
[2022-12-13 16:28:25,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 16:28:25,871 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions.
[2022-12-13 16:28:25,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2022-12-13 16:28:25,873 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) Word has length 5
[2022-12-13 16:28:25,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 16:28:25,880 INFO L225 Difference]: With dead ends: 54
[2022-12-13 16:28:25,880 INFO L226 Difference]: Without dead ends: 52
[2022-12-13 16:28:25,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-12-13 16:28:25,884 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-12-13 16:28:25,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-12-13 16:28:25,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states.
[2022-12-13 16:28:25,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52.
[2022-12-13 16:28:25,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 31 states have (on average 1.7741935483870968) internal successors, (55), 51 states have internal predecessors, (55), 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)
[2022-12-13 16:28:25,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions.
[2022-12-13 16:28:25,909 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 5
[2022-12-13 16:28:25,909 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-12-13 16:28:25,909 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions.
[2022-12-13 16:28:25,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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)
[2022-12-13 16:28:25,909 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions.
[2022-12-13 16:28:25,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2022-12-13 16:28:25,909 INFO L187 NwaCegarLoop]: Found error trace
[2022-12-13 16:28:25,910 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2022-12-13 16:28:25,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-12-13 16:28:25,910 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] ===
[2022-12-13 16:28:25,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 16:28:25,911 INFO L85 PathProgramCache]: Analyzing trace with hash 889569384, now seen corresponding path program 1 times
[2022-12-13 16:28:25,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 16:28:25,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461067453]
[2022-12-13 16:28:25,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 16:28:25,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 16:28:25,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 16:28:25,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 16:28:25,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 16:28:25,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461067453]
[2022-12-13 16:28:25,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461067453] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 16:28:25,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 16:28:25,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-12-13 16:28:25,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349965872]
[2022-12-13 16:28:25,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 16:28:25,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-12-13 16:28:25,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 16:28:25,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-12-13 16:28:25,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 16:28:25,994 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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)
[2022-12-13 16:28:26,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 16:28:26,030 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions.
[2022-12-13 16:28:26,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2022-12-13 16:28:26,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) Word has length 6
[2022-12-13 16:28:26,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 16:28:26,032 INFO L225 Difference]: With dead ends: 51
[2022-12-13 16:28:26,032 INFO L226 Difference]: Without dead ends: 51
[2022-12-13 16:28:26,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-12-13 16:28:26,033 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 2 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-12-13 16:28:26,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 85 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-12-13 16:28:26,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2022-12-13 16:28:26,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51.
[2022-12-13 16:28:26,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 31 states have (on average 1.7419354838709677) internal successors, (54), 50 states have internal predecessors, (54), 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)
[2022-12-13 16:28:26,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions.
[2022-12-13 16:28:26,037 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 6
[2022-12-13 16:28:26,037 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-12-13 16:28:26,037 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions.
[2022-12-13 16:28:26,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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)
[2022-12-13 16:28:26,037 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions.
[2022-12-13 16:28:26,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2022-12-13 16:28:26,037 INFO L187 NwaCegarLoop]: Found error trace
[2022-12-13 16:28:26,037 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2022-12-13 16:28:26,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-12-13 16:28:26,038 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] ===
[2022-12-13 16:28:26,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 16:28:26,038 INFO L85 PathProgramCache]: Analyzing trace with hash 889569385, now seen corresponding path program 1 times
[2022-12-13 16:28:26,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 16:28:26,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866885166]
[2022-12-13 16:28:26,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 16:28:26,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 16:28:26,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 16:28:26,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 16:28:26,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 16:28:26,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866885166]
[2022-12-13 16:28:26,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866885166] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 16:28:26,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 16:28:26,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 16:28:26,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427300441]
[2022-12-13 16:28:26,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 16:28:26,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-12-13 16:28:26,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 16:28:26,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-12-13 16:28:26,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-12-13 16:28:26,158 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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)
[2022-12-13 16:28:26,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 16:28:26,216 INFO L93 Difference]: Finished difference Result 99 states and 105 transitions.
[2022-12-13 16:28:26,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-12-13 16:28:26,217 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) Word has length 6
[2022-12-13 16:28:26,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 16:28:26,217 INFO L225 Difference]: With dead ends: 99
[2022-12-13 16:28:26,217 INFO L226 Difference]: Without dead ends: 99
[2022-12-13 16:28:26,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-12-13 16:28:26,219 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 49 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-12-13 16:28:26,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 123 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-12-13 16:28:26,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states.
[2022-12-13 16:28:26,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 55.
[2022-12-13 16:28:26,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 54 states have internal predecessors, (59), 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)
[2022-12-13 16:28:26,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions.
[2022-12-13 16:28:26,223 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 6
[2022-12-13 16:28:26,223 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-12-13 16:28:26,224 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions.
[2022-12-13 16:28:26,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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)
[2022-12-13 16:28:26,224 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions.
[2022-12-13 16:28:26,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2022-12-13 16:28:26,224 INFO L187 NwaCegarLoop]: Found error trace
[2022-12-13 16:28:26,224 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1]
[2022-12-13 16:28:26,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-12-13 16:28:26,225 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] ===
[2022-12-13 16:28:26,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 16:28:26,225 INFO L85 PathProgramCache]: Analyzing trace with hash 179257870, now seen corresponding path program 1 times
[2022-12-13 16:28:26,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 16:28:26,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566431278]
[2022-12-13 16:28:26,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 16:28:26,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 16:28:26,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 16:28:26,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 16:28:26,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 16:28:26,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566431278]
[2022-12-13 16:28:26,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566431278] provided 0 perfect and 1 imperfect interpolant sequences
[2022-12-13 16:28:26,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263867193]
[2022-12-13 16:28:26,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 16:28:26,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-12-13 16:28:26,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9be013-f2b6-4f42-a81e-22edf29ef0db/bin/uautomizer-uyxdKDjOR8/z3
[2022-12-13 16:28:26,343 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9be013-f2b6-4f42-a81e-22edf29ef0db/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-12-13 16:28:26,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9be013-f2b6-4f42-a81e-22edf29ef0db/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-12-13 16:28:26,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 16:28:26,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core
[2022-12-13 16:28:26,401 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-12-13 16:28:26,480 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size
[2022-12-13 16:28:26,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15
[2022-12-13 16:28:26,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 16:28:26,486 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-12-13 16:28:26,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 16:28:26,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263867193] provided 0 perfect and 2 imperfect interpolant sequences
[2022-12-13 16:28:26,535 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-12-13 16:28:26,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8
[2022-12-13 16:28:26,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473588388]
[2022-12-13 16:28:26,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-12-13 16:28:26,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2022-12-13 16:28:26,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 16:28:26,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2022-12-13 16:28:26,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2022-12-13 16:28:26,537 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 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)
[2022-12-13 16:28:26,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 16:28:26,660 INFO L93 Difference]: Finished difference Result 146 states and 155 transitions.
[2022-12-13 16:28:26,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2022-12-13 16:28:26,661 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 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) Word has length 8
[2022-12-13 16:28:26,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 16:28:26,662 INFO L225 Difference]: With dead ends: 146
[2022-12-13 16:28:26,662 INFO L226 Difference]: Without dead ends: 146
[2022-12-13 16:28:26,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156
[2022-12-13 16:28:26,664 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 344 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-12-13 16:28:26,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 279 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-12-13 16:28:26,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states.
[2022-12-13 16:28:26,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 50.
[2022-12-13 16:28:26,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 49 states have internal predecessors, (53), 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)
[2022-12-13 16:28:26,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions.
[2022-12-13 16:28:26,670 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 8
[2022-12-13 16:28:26,670 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-12-13 16:28:26,670 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions.
[2022-12-13 16:28:26,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 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)
[2022-12-13 16:28:26,670 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions.
[2022-12-13 16:28:26,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2022-12-13 16:28:26,670 INFO L187 NwaCegarLoop]: Found error trace
[2022-12-13 16:28:26,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 16:28:26,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9be013-f2b6-4f42-a81e-22edf29ef0db/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2022-12-13 16:28:26,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9be013-f2b6-4f42-a81e-22edf29ef0db/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-12-13 16:28:26,871 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] ===
[2022-12-13 16:28:26,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 16:28:26,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1213292751, now seen corresponding path program 1 times
[2022-12-13 16:28:26,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 16:28:26,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964199424]
[2022-12-13 16:28:26,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 16:28:26,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 16:28:26,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 16:28:26,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 16:28:26,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 16:28:26,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964199424]
[2022-12-13 16:28:26,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964199424] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 16:28:26,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 16:28:26,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 16:28:26,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628502378]
[2022-12-13 16:28:26,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 16:28:26,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-12-13 16:28:26,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 16:28:26,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-12-13 16:28:26,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-12-13 16:28:26,954 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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)
[2022-12-13 16:28:26,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 16:28:26,978 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions.
[2022-12-13 16:28:26,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2022-12-13 16:28:26,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) Word has length 9
[2022-12-13 16:28:26,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 16:28:26,980 INFO L225 Difference]: With dead ends: 47
[2022-12-13 16:28:26,980 INFO L226 Difference]: Without dead ends: 47
[2022-12-13 16:28:26,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-12-13 16:28:26,981 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 50 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-12-13 16:28:26,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 49 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-12-13 16:28:26,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2022-12-13 16:28:26,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47.
[2022-12-13 16:28:26,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 46 states have internal predecessors, (50), 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)
[2022-12-13 16:28:26,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions.
[2022-12-13 16:28:26,986 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 9
[2022-12-13 16:28:26,986 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-12-13 16:28:26,986 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions.
[2022-12-13 16:28:26,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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)
[2022-12-13 16:28:26,986 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions.
[2022-12-13 16:28:26,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2022-12-13 16:28:26,987 INFO L187 NwaCegarLoop]: Found error trace
[2022-12-13 16:28:26,987 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 16:28:26,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-12-13 16:28:26,987 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] ===
[2022-12-13 16:28:26,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 16:28:26,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1213292752, now seen corresponding path program 1 times
[2022-12-13 16:28:26,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 16:28:26,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383015214]
[2022-12-13 16:28:26,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 16:28:26,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 16:28:27,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 16:28:27,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 16:28:27,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 16:28:27,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383015214]
[2022-12-13 16:28:27,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383015214] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 16:28:27,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 16:28:27,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-12-13 16:28:27,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914147750]
[2022-12-13 16:28:27,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 16:28:27,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-12-13 16:28:27,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 16:28:27,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-12-13 16:28:27,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2022-12-13 16:28:27,150 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 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)
[2022-12-13 16:28:27,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 16:28:27,242 INFO L93 Difference]: Finished difference Result 82 states and 87 transitions.
[2022-12-13 16:28:27,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2022-12-13 16:28:27,243 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 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) Word has length 9
[2022-12-13 16:28:27,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 16:28:27,243 INFO L225 Difference]: With dead ends: 82
[2022-12-13 16:28:27,244 INFO L226 Difference]: Without dead ends: 82
[2022-12-13 16:28:27,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2022-12-13 16:28:27,245 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 151 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-12-13 16:28:27,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 72 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-12-13 16:28:27,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states.
[2022-12-13 16:28:27,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 47.
[2022-12-13 16:28:27,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 46 states have internal predecessors, (51), 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)
[2022-12-13 16:28:27,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions.
[2022-12-13 16:28:27,249 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 9
[2022-12-13 16:28:27,249 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-12-13 16:28:27,249 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions.
[2022-12-13 16:28:27,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 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)
[2022-12-13 16:28:27,250 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions.
[2022-12-13 16:28:27,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2022-12-13 16:28:27,250 INFO L187 NwaCegarLoop]: Found error trace
[2022-12-13 16:28:27,250 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 16:28:27,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-12-13 16:28:27,250 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] ===
[2022-12-13 16:28:27,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 16:28:27,251 INFO L85 PathProgramCache]: Analyzing trace with hash 2038145083, now seen corresponding path program 1 times
[2022-12-13 16:28:27,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 16:28:27,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562255312]
[2022-12-13 16:28:27,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 16:28:27,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 16:28:27,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 16:28:27,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 16:28:27,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 16:28:27,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562255312]
[2022-12-13 16:28:27,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562255312] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 16:28:27,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 16:28:27,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-12-13 16:28:27,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193106815]
[2022-12-13 16:28:27,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 16:28:27,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-12-13 16:28:27,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 16:28:27,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-12-13 16:28:27,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-12-13 16:28:27,289 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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)
[2022-12-13 16:28:27,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 16:28:27,319 INFO L93 Difference]: Finished difference Result 89 states and 95 transitions.
[2022-12-13 16:28:27,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-12-13 16:28:27,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) Word has length 11
[2022-12-13 16:28:27,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 16:28:27,320 INFO L225 Difference]: With dead ends: 89
[2022-12-13 16:28:27,320 INFO L226 Difference]: Without dead ends: 89
[2022-12-13 16:28:27,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-12-13 16:28:27,321 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 37 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-12-13 16:28:27,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 139 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-12-13 16:28:27,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states.
[2022-12-13 16:28:27,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 59.
[2022-12-13 16:28:27,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 45 states have (on average 1.4666666666666666) internal successors, (66), 58 states have internal predecessors, (66), 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)
[2022-12-13 16:28:27,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions.
[2022-12-13 16:28:27,327 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 11
[2022-12-13 16:28:27,327 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-12-13 16:28:27,327 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions.
[2022-12-13 16:28:27,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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)
[2022-12-13 16:28:27,327 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions.
[2022-12-13 16:28:27,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2022-12-13 16:28:27,328 INFO L187 NwaCegarLoop]: Found error trace
[2022-12-13 16:28:27,328 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 16:28:27,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2022-12-13 16:28:27,328 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] ===
[2022-12-13 16:28:27,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 16:28:27,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1240415274, now seen corresponding path program 1 times
[2022-12-13 16:28:27,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 16:28:27,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950765689]
[2022-12-13 16:28:27,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 16:28:27,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 16:28:27,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 16:28:27,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 16:28:27,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 16:28:27,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950765689]
[2022-12-13 16:28:27,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950765689] provided 0 perfect and 1 imperfect interpolant sequences
[2022-12-13 16:28:27,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123781050]
[2022-12-13 16:28:27,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 16:28:27,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-12-13 16:28:27,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9be013-f2b6-4f42-a81e-22edf29ef0db/bin/uautomizer-uyxdKDjOR8/z3
[2022-12-13 16:28:27,375 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9be013-f2b6-4f42-a81e-22edf29ef0db/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-12-13 16:28:27,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9be013-f2b6-4f42-a81e-22edf29ef0db/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-12-13 16:28:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 16:28:27,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core
[2022-12-13 16:28:27,423 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-12-13 16:28:27,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 16:28:27,460 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-12-13 16:28:27,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123781050] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 16:28:27,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-12-13 16:28:27,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8
[2022-12-13 16:28:27,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111143514]
[2022-12-13 16:28:27,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 16:28:27,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-12-13 16:28:27,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 16:28:27,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-12-13 16:28:27,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56
[2022-12-13 16:28:27,462 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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)
[2022-12-13 16:28:27,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 16:28:27,495 INFO L93 Difference]: Finished difference Result 86 states and 91 transitions.
[2022-12-13 16:28:27,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-12-13 16:28:27,495 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) Word has length 12
[2022-12-13 16:28:27,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 16:28:27,496 INFO L225 Difference]: With dead ends: 86
[2022-12-13 16:28:27,496 INFO L226 Difference]: Without dead ends: 86
[2022-12-13 16:28:27,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56
[2022-12-13 16:28:27,497 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 31 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-12-13 16:28:27,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 167 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-12-13 16:28:27,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states.
[2022-12-13 16:28:27,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 58.
[2022-12-13 16:28:27,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 44 states have (on average 1.4318181818181819) internal successors, (63), 57 states have internal predecessors, (63), 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)
[2022-12-13 16:28:27,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions.
[2022-12-13 16:28:27,501 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 12
[2022-12-13 16:28:27,501 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-12-13 16:28:27,501 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions.
[2022-12-13 16:28:27,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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)
[2022-12-13 16:28:27,501 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions.
[2022-12-13 16:28:27,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2022-12-13 16:28:27,502 INFO L187 NwaCegarLoop]: Found error trace
[2022-12-13 16:28:27,502 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 16:28:27,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9be013-f2b6-4f42-a81e-22edf29ef0db/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2022-12-13 16:28:27,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9be013-f2b6-4f42-a81e-22edf29ef0db/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-12-13 16:28:27,703 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] ===
[2022-12-13 16:28:27,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 16:28:27,703 INFO L85 PathProgramCache]: Analyzing trace with hash 2776502, now seen corresponding path program 1 times
[2022-12-13 16:28:27,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 16:28:27,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668434443]
[2022-12-13 16:28:27,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 16:28:27,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 16:28:27,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 16:28:27,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 16:28:27,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 16:28:27,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668434443]
[2022-12-13 16:28:27,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668434443] provided 0 perfect and 1 imperfect interpolant sequences
[2022-12-13 16:28:27,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978569079]
[2022-12-13 16:28:27,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 16:28:27,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-12-13 16:28:27,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9be013-f2b6-4f42-a81e-22edf29ef0db/bin/uautomizer-uyxdKDjOR8/z3
[2022-12-13 16:28:27,751 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9be013-f2b6-4f42-a81e-22edf29ef0db/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-12-13 16:28:27,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9be013-f2b6-4f42-a81e-22edf29ef0db/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-12-13 16:28:27,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 16:28:27,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core
[2022-12-13 16:28:27,798 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-12-13 16:28:27,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 16:28:27,821 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-12-13 16:28:27,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978569079] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 16:28:27,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-12-13 16:28:27,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7
[2022-12-13 16:28:27,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452205079]
[2022-12-13 16:28:27,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 16:28:27,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-12-13 16:28:27,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 16:28:27,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-12-13 16:28:27,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2022-12-13 16:28:27,823 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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)
[2022-12-13 16:28:27,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 16:28:27,856 INFO L93 Difference]: Finished difference Result 92 states and 96 transitions.
[2022-12-13 16:28:27,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-12-13 16:28:27,857 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) Word has length 13
[2022-12-13 16:28:27,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 16:28:27,858 INFO L225 Difference]: With dead ends: 92
[2022-12-13 16:28:27,858 INFO L226 Difference]: Without dead ends: 92
[2022-12-13 16:28:27,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2022-12-13 16:28:27,859 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 103 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-12-13 16:28:27,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 133 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-12-13 16:28:27,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states.
[2022-12-13 16:28:27,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 59.
[2022-12-13 16:28:27,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 45 states have (on average 1.4) internal successors, (63), 58 states have internal predecessors, (63), 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)
[2022-12-13 16:28:27,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions.
[2022-12-13 16:28:27,864 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 13
[2022-12-13 16:28:27,864 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-12-13 16:28:27,864 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions.
[2022-12-13 16:28:27,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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)
[2022-12-13 16:28:27,864 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions.
[2022-12-13 16:28:27,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2022-12-13 16:28:27,865 INFO L187 NwaCegarLoop]: Found error trace
[2022-12-13 16:28:27,865 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 16:28:27,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9be013-f2b6-4f42-a81e-22edf29ef0db/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2022-12-13 16:28:28,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9be013-f2b6-4f42-a81e-22edf29ef0db/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-12-13 16:28:28,066 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] ===
[2022-12-13 16:28:28,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 16:28:28,066 INFO L85 PathProgramCache]: Analyzing trace with hash 87668155, now seen corresponding path program 1 times
[2022-12-13 16:28:28,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 16:28:28,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839040287]
[2022-12-13 16:28:28,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 16:28:28,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 16:28:28,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 16:28:28,279 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 16:28:28,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 16:28:28,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839040287]
[2022-12-13 16:28:28,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839040287] provided 0 perfect and 1 imperfect interpolant sequences
[2022-12-13 16:28:28,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015668898]
[2022-12-13 16:28:28,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 16:28:28,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-12-13 16:28:28,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9be013-f2b6-4f42-a81e-22edf29ef0db/bin/uautomizer-uyxdKDjOR8/z3
[2022-12-13 16:28:28,281 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9be013-f2b6-4f42-a81e-22edf29ef0db/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-12-13 16:28:28,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9be013-f2b6-4f42-a81e-22edf29ef0db/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2022-12-13 16:28:28,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 16:28:28,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 19 conjunts are in the unsatisfiable core
[2022-12-13 16:28:28,330 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-12-13 16:28:28,355 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size
[2022-12-13 16:28:28,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11
[2022-12-13 16:28:28,456 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 16:28:28,456 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-12-13 16:28:28,622 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-12-13 16:28:28,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015668898] provided 0 perfect and 2 imperfect interpolant sequences
[2022-12-13 16:28:28,622 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-12-13 16:28:28,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 19
[2022-12-13 16:28:28,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142594701]
[2022-12-13 16:28:28,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-12-13 16:28:28,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states
[2022-12-13 16:28:28,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 16:28:28,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2022-12-13 16:28:28,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380
[2022-12-13 16:28:28,624 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand has 20 states, 19 states have (on average 2.0) internal successors, (38), 20 states have internal predecessors, (38), 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)
[2022-12-13 16:28:29,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 16:28:29,191 INFO L93 Difference]: Finished difference Result 179 states and 187 transitions.
[2022-12-13 16:28:29,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2022-12-13 16:28:29,192 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.0) internal successors, (38), 20 states have internal predecessors, (38), 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) Word has length 14
[2022-12-13 16:28:29,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 16:28:29,193 INFO L225 Difference]: With dead ends: 179
[2022-12-13 16:28:29,193 INFO L226 Difference]: Without dead ends: 179
[2022-12-13 16:28:29,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=212, Invalid=718, Unknown=0, NotChecked=0, Total=930
[2022-12-13 16:28:29,194 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 445 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-12-13 16:28:29,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 559 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-12-13 16:28:29,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states.
[2022-12-13 16:28:29,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 79.
[2022-12-13 16:28:29,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 65 states have (on average 1.3692307692307693) internal successors, (89), 78 states have internal predecessors, (89), 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)
[2022-12-13 16:28:29,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 89 transitions.
[2022-12-13 16:28:29,198 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 89 transitions. Word has length 14
[2022-12-13 16:28:29,198 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-12-13 16:28:29,198 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 89 transitions.
[2022-12-13 16:28:29,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.0) internal successors, (38), 20 states have internal predecessors, (38), 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)
[2022-12-13 16:28:29,198 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 89 transitions.
[2022-12-13 16:28:29,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2022-12-13 16:28:29,199 INFO L187 NwaCegarLoop]: Found error trace
[2022-12-13 16:28:29,199 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 16:28:29,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9be013-f2b6-4f42-a81e-22edf29ef0db/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2022-12-13 16:28:29,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9be013-f2b6-4f42-a81e-22edf29ef0db/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2022-12-13 16:28:29,400 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] ===
[2022-12-13 16:28:29,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 16:28:29,400 INFO L85 PathProgramCache]: Analyzing trace with hash 685561807, now seen corresponding path program 1 times
[2022-12-13 16:28:29,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 16:28:29,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882751256]
[2022-12-13 16:28:29,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 16:28:29,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 16:28:29,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-12-13 16:28:29,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2022-12-13 16:28:29,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-12-13 16:28:29,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882751256]
[2022-12-13 16:28:29,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882751256] provided 1 perfect and 0 imperfect interpolant sequences
[2022-12-13 16:28:29,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-12-13 16:28:29,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-12-13 16:28:29,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372390491]
[2022-12-13 16:28:29,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-12-13 16:28:29,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-12-13 16:28:29,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-12-13 16:28:29,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-12-13 16:28:29,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-12-13 16:28:29,428 INFO L87 Difference]: Start difference. First operand 79 states and 89 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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)
[2022-12-13 16:28:29,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-12-13 16:28:29,457 INFO L93 Difference]: Finished difference Result 77 states and 86 transitions.
[2022-12-13 16:28:29,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-12-13 16:28:29,458 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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) Word has length 15
[2022-12-13 16:28:29,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-12-13 16:28:29,458 INFO L225 Difference]: With dead ends: 77
[2022-12-13 16:28:29,458 INFO L226 Difference]: Without dead ends: 77
[2022-12-13 16:28:29,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-12-13 16:28:29,459 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 16 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-12-13 16:28:29,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 71 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-12-13 16:28:29,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states.
[2022-12-13 16:28:29,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77.
[2022-12-13 16:28:29,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 65 states have (on average 1.323076923076923) internal successors, (86), 76 states have internal predecessors, (86), 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)
[2022-12-13 16:28:29,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions.
[2022-12-13 16:28:29,462 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 15
[2022-12-13 16:28:29,462 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-12-13 16:28:29,462 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions.
[2022-12-13 16:28:29,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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)
[2022-12-13 16:28:29,462 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions.
[2022-12-13 16:28:29,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2022-12-13 16:28:29,463 INFO L187 NwaCegarLoop]: Found error trace
[2022-12-13 16:28:29,463 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 16:28:29,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2022-12-13 16:28:29,463 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 18 more)] ===
[2022-12-13 16:28:29,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-12-13 16:28:29,463 INFO L85 PathProgramCache]: Analyzing trace with hash 685561808, now seen corresponding path program 1 times
[2022-12-13 16:28:29,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-12-13 16:28:29,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099906410]
[2022-12-13 16:28:29,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-12-13 16:28:29,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-12-13 16:28:29,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-12-13 16:28:29,472 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2022-12-13 16:28:29,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-12-13 16:28:29,488 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2022-12-13 16:28:29,488 INFO L360 BasicCegarLoop]: Counterexample is feasible
[2022-12-13 16:28:29,489 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 21 remaining)
[2022-12-13 16:28:29,490 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 21 remaining)
[2022-12-13 16:28:29,490 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 21 remaining)
[2022-12-13 16:28:29,491 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 21 remaining)
[2022-12-13 16:28:29,491 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 21 remaining)
[2022-12-13 16:28:29,491 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 21 remaining)
[2022-12-13 16:28:29,491 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 21 remaining)
[2022-12-13 16:28:29,491 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 21 remaining)
[2022-12-13 16:28:29,491 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE (12 of 21 remaining)
[2022-12-13 16:28:29,491 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE (11 of 21 remaining)
[2022-12-13 16:28:29,491 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE (10 of 21 remaining)
[2022-12-13 16:28:29,491 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE (9 of 21 remaining)
[2022-12-13 16:28:29,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE (8 of 21 remaining)
[2022-12-13 16:28:29,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE (7 of 21 remaining)
[2022-12-13 16:28:29,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE (6 of 21 remaining)
[2022-12-13 16:28:29,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE (5 of 21 remaining)
[2022-12-13 16:28:29,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE (4 of 21 remaining)
[2022-12-13 16:28:29,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE (3 of 21 remaining)
[2022-12-13 16:28:29,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE (2 of 21 remaining)
[2022-12-13 16:28:29,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE (1 of 21 remaining)
[2022-12-13 16:28:29,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK (0 of 21 remaining)
[2022-12-13 16:28:29,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2022-12-13 16:28:29,495 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-12-13 16:28:29,498 INFO L178 ceAbstractionStarter]: Computing trace abstraction results
[2022-12-13 16:28:29,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 04:28:29 BoogieIcfgContainer
[2022-12-13 16:28:29,513 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2022-12-13 16:28:29,513 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2022-12-13 16:28:29,513 INFO L271 PluginConnector]: Initializing Witness Printer...
[2022-12-13 16:28:29,513 INFO L275 PluginConnector]: Witness Printer initialized
[2022-12-13 16:28:29,514 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:28:25" (3/4) ...
[2022-12-13 16:28:29,515 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample
[2022-12-13 16:28:29,539 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9be013-f2b6-4f42-a81e-22edf29ef0db/bin/uautomizer-uyxdKDjOR8/witness.graphml
[2022-12-13 16:28:29,539 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2022-12-13 16:28:29,540 INFO L158 Benchmark]: Toolchain (without parser) took 4600.94ms. Allocated memory was 125.8MB in the beginning and 184.5MB in the end (delta: 58.7MB). Free memory was 89.4MB in the beginning and 118.9MB in the end (delta: -29.5MB). Peak memory consumption was 32.4MB. Max. memory is 16.1GB.
[2022-12-13 16:28:29,540 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 125.8MB. Free memory was 90.0MB in the beginning and 89.9MB in the end (delta: 24.2kB). There was no memory consumed. Max. memory is 16.1GB.
[2022-12-13 16:28:29,541 INFO L158 Benchmark]: CACSL2BoogieTranslator took 288.83ms. Allocated memory is still 125.8MB. Free memory was 88.9MB in the beginning and 72.7MB in the end (delta: 16.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB.
[2022-12-13 16:28:29,541 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.01ms. Allocated memory is still 125.8MB. Free memory was 72.7MB in the beginning and 71.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2022-12-13 16:28:29,541 INFO L158 Benchmark]: Boogie Preprocessor took 24.06ms. Allocated memory is still 125.8MB. Free memory was 71.0MB in the beginning and 69.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2022-12-13 16:28:29,541 INFO L158 Benchmark]: RCFGBuilder took 323.57ms. Allocated memory is still 125.8MB. Free memory was 69.5MB in the beginning and 55.4MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB.
[2022-12-13 16:28:29,542 INFO L158 Benchmark]: TraceAbstraction took 3897.97ms. Allocated memory was 125.8MB in the beginning and 184.5MB in the end (delta: 58.7MB). Free memory was 54.8MB in the beginning and 121.0MB in the end (delta: -66.2MB). There was no memory consumed. Max. memory is 16.1GB.
[2022-12-13 16:28:29,542 INFO L158 Benchmark]: Witness Printer took 26.27ms. Allocated memory is still 184.5MB. Free memory was 121.0MB in the beginning and 118.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2022-12-13 16:28:29,543 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.10ms. Allocated memory is still 125.8MB. Free memory was 90.0MB in the beginning and 89.9MB in the end (delta: 24.2kB). There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 288.83ms. Allocated memory is still 125.8MB. Free memory was 88.9MB in the beginning and 72.7MB in the end (delta: 16.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 34.01ms. Allocated memory is still 125.8MB. Free memory was 72.7MB in the beginning and 71.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 24.06ms. Allocated memory is still 125.8MB. Free memory was 71.0MB in the beginning and 69.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 323.57ms. Allocated memory is still 125.8MB. Free memory was 69.5MB in the beginning and 55.4MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB.
* TraceAbstraction took 3897.97ms. Allocated memory was 125.8MB in the beginning and 184.5MB in the end (delta: 58.7MB). Free memory was 54.8MB in the beginning and 121.0MB in the end (delta: -66.2MB). There was no memory consumed. Max. memory is 16.1GB.
* Witness Printer took 26.27ms. Allocated memory is still 184.5MB. Free memory was 121.0MB in the beginning and 118.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: ErrorAutomatonStatistics
NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
- CounterExampleResult [Line: -1]: pointer dereference may fail
pointer dereference may fail
We found a FailurePath:
[L523] int *a, *b;
[L524] int n;
VAL [a={0:0}, b={0:0}, n=0]
[L536] n = 1
VAL [a={0:0}, b={0:0}, n=1]
[L537] COND FALSE !(__VERIFIER_nondet_int() && n < 30)
[L540] a = malloc(n * sizeof(*a))
[L541] b = malloc(n * sizeof(*b))
[L542] EXPR b++
VAL [a={-2:0}, b={-1:4}, b++={-1:0}, n=1]
[L542] *b++ = 0
VAL [a={-2:0}, b={-1:4}, b++={-1:0}, n=1]
[L543] CALL foo()
[L528] int i;
[L529] i = 0
VAL [a={-2:0}, b={-1:4}, i=0, n=1]
[L529] COND TRUE i < n
VAL [a={-2:0}, b={-1:4}, i=0, n=1]
[L530] a[i] = n
VAL [a={-2:0}, b={-1:4}, i=0, n=1]
[L529] i++
VAL [a={-2:0}, b={-1:4}, i=1, n=1]
[L529] COND FALSE !(i < n)
VAL [a={-2:0}, b={-1:4}, i=1, n=1]
[L531] i = 0
VAL [a={-2:0}, b={-1:4}, i=0, n=1]
[L531] COND FALSE !(i < n - 1)
VAL [a={-2:0}, b={-1:4}, i=0, n=1]
[L543] RET foo()
[L544] b[-2]
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 545]: Unable to prove that free always succeeds
Unable to prove that free always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 545]: Unable to prove that free always succeeds
Unable to prove that free always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 545]: Unable to prove that free always succeeds
Unable to prove that free always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 545]: Unable to prove that free always succeeds
Unable to prove that free always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 545]: Unable to prove that free always succeeds
Unable to prove that free always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 545]: Unable to prove that free always succeeds
Unable to prove that free always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 547]: Unable to prove that free always succeeds
Unable to prove that free always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 547]: Unable to prove that free always succeeds
Unable to prove that free always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 547]: Unable to prove that free always succeeds
Unable to prove that free always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 547]: Unable to prove that free always succeeds
Unable to prove that free always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 547]: Unable to prove that free always succeeds
Unable to prove that free always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 547]: Unable to prove that free always succeeds
Unable to prove that free always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 534]: Unable to prove that all allocated memory was freed
Unable to prove that all allocated memory was freed
Reason: Not analyzed.
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 1 procedures, 54 locations, 21 error locations. Started 1 CEGAR loops. OverallTime: 3.8s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1228 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1228 mSDsluCounter, 1734 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1107 mSDsCounter, 46 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 949 IncrementalHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 46 mSolverCounterUnsat, 627 mSDtfsCounter, 949 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=10, InterpolantAutomatonStates: 62, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 366 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 170 NumberOfCodeBlocks, 170 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 160 ConstructedInterpolants, 0 QuantifiedInterpolants, 1050 SizeOfPredicates, 10 NumberOfNonLiveVariables, 340 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 17 InterpolantComputations, 9 PerfectInterpolantSequences, 6/27 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
[2022-12-13 16:28:29,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad9be013-f2b6-4f42-a81e-22edf29ef0db/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Writing output log to file Ultimate.log
Writing human readable error path to file UltimateCounterExample.errorpath
Result:
FALSE(valid-deref)