./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/scopes3.c --full-output --architecture 32bit
--------------------------------------------------------------------------------
Checking for memory safety (deref-memtrack)
Using default analysis
Version 5e519f3a
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_a783af7b-cce8-4b2c-a1ff-7e10c680d114/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a783af7b-cce8-4b2c-a1ff-7e10c680d114/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a783af7b-cce8-4b2c-a1ff-7e10c680d114/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a783af7b-cce8-4b2c-a1ff-7e10c680d114/bin/uautomizer-Dbtcem3rbc/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/scopes3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a783af7b-cce8-4b2c-a1ff-7e10c680d114/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a783af7b-cce8-4b2c-a1ff-7e10c680d114/bin/uautomizer-Dbtcem3rbc --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 f8b4bb9a8f404cd020a4d6119f922da096d098a1547934faf4c16f394bfab92c
--- 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-5e519f3
[2022-11-02 20:48:45,944 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2022-11-02 20:48:45,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2022-11-02 20:48:45,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-11-02 20:48:46,000 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-11-02 20:48:46,004 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-11-02 20:48:46,007 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-11-02 20:48:46,011 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2022-11-02 20:48:46,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-11-02 20:48:46,020 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-11-02 20:48:46,022 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2022-11-02 20:48:46,024 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-11-02 20:48:46,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-11-02 20:48:46,027 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-11-02 20:48:46,029 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-11-02 20:48:46,031 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-11-02 20:48:46,033 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-11-02 20:48:46,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-11-02 20:48:46,035 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-11-02 20:48:46,045 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2022-11-02 20:48:46,047 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-11-02 20:48:46,050 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-11-02 20:48:46,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2022-11-02 20:48:46,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-11-02 20:48:46,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-11-02 20:48:46,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-11-02 20:48:46,060 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-11-02 20:48:46,061 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-11-02 20:48:46,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-11-02 20:48:46,063 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-11-02 20:48:46,063 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-11-02 20:48:46,064 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-11-02 20:48:46,066 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-11-02 20:48:46,067 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2022-11-02 20:48:46,069 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-11-02 20:48:46,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2022-11-02 20:48:46,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-11-02 20:48:46,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-11-02 20:48:46,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2022-11-02 20:48:46,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2022-11-02 20:48:46,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2022-11-02 20:48:46,073 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a783af7b-cce8-4b2c-a1ff-7e10c680d114/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf
[2022-11-02 20:48:46,115 INFO L113 SettingsManager]: Loading preferences was successful
[2022-11-02 20:48:46,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2022-11-02 20:48:46,116 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-11-02 20:48:46,116 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-11-02 20:48:46,117 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-11-02 20:48:46,117 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-11-02 20:48:46,118 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-11-02 20:48:46,118 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2022-11-02 20:48:46,118 INFO L138 SettingsManager]: * Use SBE=true
[2022-11-02 20:48:46,119 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-11-02 20:48:46,120 INFO L138 SettingsManager]: * sizeof long=4
[2022-11-02 20:48:46,120 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false
[2022-11-02 20:48:46,120 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2022-11-02 20:48:46,120 INFO L138 SettingsManager]: * sizeof POINTER=4
[2022-11-02 20:48:46,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2022-11-02 20:48:46,121 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2022-11-02 20:48:46,121 INFO L138 SettingsManager]: * Bitprecise bitfields=true
[2022-11-02 20:48:46,121 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2022-11-02 20:48:46,121 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-11-02 20:48:46,121 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2022-11-02 20:48:46,122 INFO L138 SettingsManager]: * sizeof long double=12
[2022-11-02 20:48:46,122 INFO L138 SettingsManager]: * Use constant arrays=true
[2022-11-02 20:48:46,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-11-02 20:48:46,122 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2022-11-02 20:48:46,123 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2022-11-02 20:48:46,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-02 20:48:46,123 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-11-02 20:48:46,123 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2022-11-02 20:48:46,123 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2022-11-02 20:48:46,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-11-02 20:48:46,124 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a783af7b-cce8-4b2c-a1ff-7e10c680d114/bin/uautomizer-Dbtcem3rbc/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a783af7b-cce8-4b2c-a1ff-7e10c680d114/bin/uautomizer-Dbtcem3rbc
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f8b4bb9a8f404cd020a4d6119f922da096d098a1547934faf4c16f394bfab92c
[2022-11-02 20:48:46,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2022-11-02 20:48:46,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-11-02 20:48:46,492 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-11-02 20:48:46,494 INFO L271 PluginConnector]: Initializing CDTParser...
[2022-11-02 20:48:46,494 INFO L275 PluginConnector]: CDTParser initialized
[2022-11-02 20:48:46,496 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a783af7b-cce8-4b2c-a1ff-7e10c680d114/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/memsafety-ext3/scopes3.c
[2022-11-02 20:48:46,577 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a783af7b-cce8-4b2c-a1ff-7e10c680d114/bin/uautomizer-Dbtcem3rbc/data/bc44d45d7/520dbc21bca841cabee2a3fdaf8440e7/FLAGa254e0a66
[2022-11-02 20:48:47,045 INFO L306 CDTParser]: Found 1 translation units.
[2022-11-02 20:48:47,046 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a783af7b-cce8-4b2c-a1ff-7e10c680d114/sv-benchmarks/c/memsafety-ext3/scopes3.c
[2022-11-02 20:48:47,052 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a783af7b-cce8-4b2c-a1ff-7e10c680d114/bin/uautomizer-Dbtcem3rbc/data/bc44d45d7/520dbc21bca841cabee2a3fdaf8440e7/FLAGa254e0a66
[2022-11-02 20:48:47,429 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a783af7b-cce8-4b2c-a1ff-7e10c680d114/bin/uautomizer-Dbtcem3rbc/data/bc44d45d7/520dbc21bca841cabee2a3fdaf8440e7
[2022-11-02 20:48:47,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-11-02 20:48:47,433 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2022-11-02 20:48:47,436 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-11-02 20:48:47,436 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-11-02 20:48:47,440 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2022-11-02 20:48:47,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:48:47" (1/1) ...
[2022-11-02 20:48:47,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a66a769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:47, skipping insertion in model container
[2022-11-02 20:48:47,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:48:47" (1/1) ...
[2022-11-02 20:48:47,451 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2022-11-02 20:48:47,466 INFO L178 MainTranslator]: Built tables and reachable declarations
[2022-11-02 20:48:47,641 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-11-02 20:48:47,661 INFO L203 MainTranslator]: Completed pre-run
[2022-11-02 20:48:47,678 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-11-02 20:48:47,693 INFO L208 MainTranslator]: Completed translation
[2022-11-02 20:48:47,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:47 WrapperNode
[2022-11-02 20:48:47,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-11-02 20:48:47,696 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-11-02 20:48:47,696 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-11-02 20:48:47,696 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2022-11-02 20:48:47,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:47" (1/1) ...
[2022-11-02 20:48:47,714 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:47" (1/1) ...
[2022-11-02 20:48:47,735 INFO L138 Inliner]: procedures = 7, calls = 6, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22
[2022-11-02 20:48:47,735 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-11-02 20:48:47,736 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-11-02 20:48:47,736 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2022-11-02 20:48:47,736 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2022-11-02 20:48:47,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:47" (1/1) ...
[2022-11-02 20:48:47,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:47" (1/1) ...
[2022-11-02 20:48:47,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:47" (1/1) ...
[2022-11-02 20:48:47,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:47" (1/1) ...
[2022-11-02 20:48:47,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:47" (1/1) ...
[2022-11-02 20:48:47,759 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:47" (1/1) ...
[2022-11-02 20:48:47,766 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:47" (1/1) ...
[2022-11-02 20:48:47,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:47" (1/1) ...
[2022-11-02 20:48:47,769 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-11-02 20:48:47,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-11-02 20:48:47,771 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2022-11-02 20:48:47,771 INFO L275 PluginConnector]: RCFGBuilder initialized
[2022-11-02 20:48:47,773 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:47" (1/1) ...
[2022-11-02 20:48:47,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-02 20:48:47,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a783af7b-cce8-4b2c-a1ff-7e10c680d114/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:48:47,808 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a783af7b-cce8-4b2c-a1ff-7e10c680d114/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-11-02 20:48:47,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a783af7b-cce8-4b2c-a1ff-7e10c680d114/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-11-02 20:48:47,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2022-11-02 20:48:47,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-11-02 20:48:47,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-11-02 20:48:47,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2022-11-02 20:48:47,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-11-02 20:48:47,939 INFO L235 CfgBuilder]: Building ICFG
[2022-11-02 20:48:47,941 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation
[2022-11-02 20:48:48,110 INFO L276 CfgBuilder]: Performing block encoding
[2022-11-02 20:48:48,116 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-11-02 20:48:48,116 INFO L300 CfgBuilder]: Removed 1 assume(true) statements.
[2022-11-02 20:48:48,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:48:48 BoogieIcfgContainer
[2022-11-02 20:48:48,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-11-02 20:48:48,120 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-11-02 20:48:48,120 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2022-11-02 20:48:48,123 INFO L275 PluginConnector]: TraceAbstraction initialized
[2022-11-02 20:48:48,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:48:47" (1/3) ...
[2022-11-02 20:48:48,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f184103 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:48:48, skipping insertion in model container
[2022-11-02 20:48:48,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:48:47" (2/3) ...
[2022-11-02 20:48:48,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f184103 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:48:48, skipping insertion in model container
[2022-11-02 20:48:48,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:48:48" (3/3) ...
[2022-11-02 20:48:48,127 INFO L112 eAbstractionObserver]: Analyzing ICFG scopes3.c
[2022-11-02 20:48:48,145 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-11-02 20:48:48,145 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations.
[2022-11-02 20:48:48,190 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-11-02 20:48:48,198 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4b7670fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-11-02 20:48:48,198 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations.
[2022-11-02 20:48:48,202 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 14 states have internal predecessors, (16), 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)
[2022-11-02 20:48:48,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5
[2022-11-02 20:48:48,209 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:48:48,209 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1]
[2022-11-02 20:48:48,210 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] ===
[2022-11-02 20:48:48,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:48:48,215 INFO L85 PathProgramCache]: Analyzing trace with hash 925990, now seen corresponding path program 1 times
[2022-11-02 20:48:48,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:48:48,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266281916]
[2022-11-02 20:48:48,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:48:48,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:48:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:48:48,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:48:48,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:48:48,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266281916]
[2022-11-02 20:48:48,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266281916] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 20:48:48,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 20:48:48,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-02 20:48:48,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073309937]
[2022-11-02 20:48:48,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:48:48,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-11-02 20:48:48,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:48:48,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-11-02 20:48:48,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-11-02 20:48:48,383 INFO L87 Difference]: Start difference. First operand has 15 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 14 states have internal predecessors, (16), 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 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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)
[2022-11-02 20:48:48,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:48:48,394 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions.
[2022-11-02 20:48:48,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2022-11-02 20:48:48,396 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4
[2022-11-02 20:48:48,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:48:48,403 INFO L225 Difference]: With dead ends: 15
[2022-11-02 20:48:48,404 INFO L226 Difference]: Without dead ends: 13
[2022-11-02 20:48:48,405 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
[2022-11-02 20:48:48,409 INFO L413 NwaCegarLoop]: 15 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, 15 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
[2022-11-02 20:48:48,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-11-02 20:48:48,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states.
[2022-11-02 20:48:48,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13.
[2022-11-02 20:48:48,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.625) internal successors, (13), 12 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)
[2022-11-02 20:48:48,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions.
[2022-11-02 20:48:48,440 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 4
[2022-11-02 20:48:48,440 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:48:48,441 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions.
[2022-11-02 20:48:48,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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)
[2022-11-02 20:48:48,441 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions.
[2022-11-02 20:48:48,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5
[2022-11-02 20:48:48,442 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:48:48,442 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1]
[2022-11-02 20:48:48,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-11-02 20:48:48,442 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] ===
[2022-11-02 20:48:48,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:48:48,443 INFO L85 PathProgramCache]: Analyzing trace with hash 925711, now seen corresponding path program 1 times
[2022-11-02 20:48:48,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:48:48,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803279655]
[2022-11-02 20:48:48,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:48:48,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:48:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:48:48,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:48:48,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:48:48,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803279655]
[2022-11-02 20:48:48,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803279655] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 20:48:48,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 20:48:48,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-02 20:48:48,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378198434]
[2022-11-02 20:48:48,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:48:48,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-02 20:48:48,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:48:48,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-02 20:48:48,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-02 20:48:48,489 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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)
[2022-11-02 20:48:48,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:48:48,503 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions.
[2022-11-02 20:48:48,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2022-11-02 20:48:48,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 4
[2022-11-02 20:48:48,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:48:48,505 INFO L225 Difference]: With dead ends: 18
[2022-11-02 20:48:48,505 INFO L226 Difference]: Without dead ends: 18
[2022-11-02 20:48:48,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-02 20:48:48,507 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-11-02 20:48:48,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 20 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-11-02 20:48:48,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states.
[2022-11-02 20:48:48,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 14.
[2022-11-02 20:48:48,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 13 states have internal predecessors, (14), 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)
[2022-11-02 20:48:48,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions.
[2022-11-02 20:48:48,511 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 4
[2022-11-02 20:48:48,511 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:48:48,512 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions.
[2022-11-02 20:48:48,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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)
[2022-11-02 20:48:48,512 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions.
[2022-11-02 20:48:48,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5
[2022-11-02 20:48:48,513 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:48:48,513 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1]
[2022-11-02 20:48:48,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-11-02 20:48:48,513 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] ===
[2022-11-02 20:48:48,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:48:48,514 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times
[2022-11-02 20:48:48,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:48:48,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070633716]
[2022-11-02 20:48:48,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:48:48,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:48:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:48:48,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:48:48,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:48:48,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070633716]
[2022-11-02 20:48:48,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070633716] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 20:48:48,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 20:48:48,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-02 20:48:48,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732448708]
[2022-11-02 20:48:48,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:48:48,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-02 20:48:48,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:48:48,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-02 20:48:48,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-02 20:48:48,594 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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)
[2022-11-02 20:48:48,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:48:48,613 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions.
[2022-11-02 20:48:48,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2022-11-02 20:48:48,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4
[2022-11-02 20:48:48,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:48:48,614 INFO L225 Difference]: With dead ends: 13
[2022-11-02 20:48:48,614 INFO L226 Difference]: Without dead ends: 13
[2022-11-02 20:48:48,615 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
[2022-11-02 20:48:48,616 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-11-02 20:48:48,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 9 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-11-02 20:48:48,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states.
[2022-11-02 20:48:48,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13.
[2022-11-02 20:48:48,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 12 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)
[2022-11-02 20:48:48,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions.
[2022-11-02 20:48:48,620 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 4
[2022-11-02 20:48:48,632 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:48:48,632 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions.
[2022-11-02 20:48:48,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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)
[2022-11-02 20:48:48,633 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions.
[2022-11-02 20:48:48,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5
[2022-11-02 20:48:48,647 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:48:48,647 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1]
[2022-11-02 20:48:48,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-11-02 20:48:48,648 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] ===
[2022-11-02 20:48:48,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:48:48,649 INFO L85 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times
[2022-11-02 20:48:48,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:48:48,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326537510]
[2022-11-02 20:48:48,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:48:48,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:48:48,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:48:48,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:48:48,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:48:48,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326537510]
[2022-11-02 20:48:48,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326537510] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-02 20:48:48,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-02 20:48:48,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-02 20:48:48,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503911493]
[2022-11-02 20:48:48,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-02 20:48:48,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-02 20:48:48,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:48:48,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-02 20:48:48,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-02 20:48:48,839 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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)
[2022-11-02 20:48:48,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:48:48,867 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions.
[2022-11-02 20:48:48,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2022-11-02 20:48:48,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4
[2022-11-02 20:48:48,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:48:48,869 INFO L225 Difference]: With dead ends: 11
[2022-11-02 20:48:48,869 INFO L226 Difference]: Without dead ends: 11
[2022-11-02 20:48:48,869 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
[2022-11-02 20:48:48,871 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 7 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-11-02 20:48:48,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 8 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-11-02 20:48:48,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states.
[2022-11-02 20:48:48,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11.
[2022-11-02 20:48:48,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 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)
[2022-11-02 20:48:48,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions.
[2022-11-02 20:48:48,874 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 4
[2022-11-02 20:48:48,874 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:48:48,875 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions.
[2022-11-02 20:48:48,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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)
[2022-11-02 20:48:48,875 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions.
[2022-11-02 20:48:48,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2022-11-02 20:48:48,876 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:48:48,876 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1]
[2022-11-02 20:48:48,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-11-02 20:48:48,877 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] ===
[2022-11-02 20:48:48,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:48:48,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1809646231, now seen corresponding path program 1 times
[2022-11-02 20:48:48,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:48:48,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331961559]
[2022-11-02 20:48:48,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:48:48,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:48:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:48:48,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:48:48,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:48:48,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331961559]
[2022-11-02 20:48:48,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331961559] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-02 20:48:48,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102460058]
[2022-11-02 20:48:48,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:48:48,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:48:48,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a783af7b-cce8-4b2c-a1ff-7e10c680d114/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:48:48,958 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a783af7b-cce8-4b2c-a1ff-7e10c680d114/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-02 20:48:48,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a783af7b-cce8-4b2c-a1ff-7e10c680d114/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-11-02 20:48:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:48:49,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core
[2022-11-02 20:48:49,055 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:48:49,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:48:49,111 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:48:49,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:48:49,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102460058] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:48:49,139 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-11-02 20:48:49,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7
[2022-11-02 20:48:49,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686218318]
[2022-11-02 20:48:49,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:48:49,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-11-02 20:48:49,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:48:49,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-11-02 20:48:49,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2022-11-02 20:48:49,141 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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)
[2022-11-02 20:48:49,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:48:49,170 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions.
[2022-11-02 20:48:49,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2022-11-02 20:48:49,171 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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 7
[2022-11-02 20:48:49,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:48:49,171 INFO L225 Difference]: With dead ends: 20
[2022-11-02 20:48:49,171 INFO L226 Difference]: Without dead ends: 20
[2022-11-02 20:48:49,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2022-11-02 20:48:49,173 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 8 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-11-02 20:48:49,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 32 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-11-02 20:48:49,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states.
[2022-11-02 20:48:49,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20.
[2022-11-02 20:48:49,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 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)
[2022-11-02 20:48:49,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions.
[2022-11-02 20:48:49,178 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 7
[2022-11-02 20:48:49,178 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:48:49,178 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions.
[2022-11-02 20:48:49,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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)
[2022-11-02 20:48:49,179 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions.
[2022-11-02 20:48:49,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2022-11-02 20:48:49,179 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:48:49,179 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1]
[2022-11-02 20:48:49,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a783af7b-cce8-4b2c-a1ff-7e10c680d114/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2022-11-02 20:48:49,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a783af7b-cce8-4b2c-a1ff-7e10c680d114/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:48:49,407 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] ===
[2022-11-02 20:48:49,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:48:49,408 INFO L85 PathProgramCache]: Analyzing trace with hash -116849137, now seen corresponding path program 2 times
[2022-11-02 20:48:49,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:48:49,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087405022]
[2022-11-02 20:48:49,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:48:49,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:48:49,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-02 20:48:49,637 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:48:49,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-11-02 20:48:49,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087405022]
[2022-11-02 20:48:49,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087405022] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-02 20:48:49,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392742651]
[2022-11-02 20:48:49,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-11-02 20:48:49,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-02 20:48:49,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a783af7b-cce8-4b2c-a1ff-7e10c680d114/bin/uautomizer-Dbtcem3rbc/z3
[2022-11-02 20:48:49,640 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a783af7b-cce8-4b2c-a1ff-7e10c680d114/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-02 20:48:49,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a783af7b-cce8-4b2c-a1ff-7e10c680d114/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-11-02 20:48:49,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-11-02 20:48:49,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-11-02 20:48:49,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjunts are in the unsatisfiable core
[2022-11-02 20:48:49,736 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-02 20:48:49,775 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:48:49,775 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-02 20:48:49,867 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-02 20:48:49,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392742651] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-02 20:48:49,868 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-11-02 20:48:49,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13
[2022-11-02 20:48:49,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805714263]
[2022-11-02 20:48:49,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-11-02 20:48:49,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2022-11-02 20:48:49,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-11-02 20:48:49,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2022-11-02 20:48:49,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156
[2022-11-02 20:48:49,871 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 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)
[2022-11-02 20:48:49,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-02 20:48:49,922 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions.
[2022-11-02 20:48:49,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2022-11-02 20:48:49,922 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 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 16
[2022-11-02 20:48:49,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-02 20:48:49,923 INFO L225 Difference]: With dead ends: 38
[2022-11-02 20:48:49,924 INFO L226 Difference]: Without dead ends: 38
[2022-11-02 20:48:49,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156
[2022-11-02 20:48:49,926 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 20 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-11-02 20:48:49,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 37 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-11-02 20:48:49,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states.
[2022-11-02 20:48:49,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38.
[2022-11-02 20:48:49,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 37 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)
[2022-11-02 20:48:49,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions.
[2022-11-02 20:48:49,932 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 16
[2022-11-02 20:48:49,932 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-02 20:48:49,932 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions.
[2022-11-02 20:48:49,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 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)
[2022-11-02 20:48:49,933 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions.
[2022-11-02 20:48:49,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2022-11-02 20:48:49,934 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-02 20:48:49,934 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1]
[2022-11-02 20:48:49,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a783af7b-cce8-4b2c-a1ff-7e10c680d114/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-11-02 20:48:50,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a783af7b-cce8-4b2c-a1ff-7e10c680d114/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2022-11-02 20:48:50,159 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] ===
[2022-11-02 20:48:50,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-02 20:48:50,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1565294351, now seen corresponding path program 3 times
[2022-11-02 20:48:50,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-11-02 20:48:50,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387932631]
[2022-11-02 20:48:50,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-02 20:48:50,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-02 20:48:50,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-11-02 20:48:50,222 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2022-11-02 20:48:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-11-02 20:48:50,279 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2022-11-02 20:48:50,279 INFO L359 BasicCegarLoop]: Counterexample is feasible
[2022-11-02 20:48:50,280 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 5 remaining)
[2022-11-02 20:48:50,282 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 5 remaining)
[2022-11-02 20:48:50,282 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 5 remaining)
[2022-11-02 20:48:50,283 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 5 remaining)
[2022-11-02 20:48:50,283 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining)
[2022-11-02 20:48:50,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2022-11-02 20:48:50,287 INFO L444 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1]
[2022-11-02 20:48:50,291 INFO L178 ceAbstractionStarter]: Computing trace abstraction results
[2022-11-02 20:48:50,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:48:50 BoogieIcfgContainer
[2022-11-02 20:48:50,319 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2022-11-02 20:48:50,320 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2022-11-02 20:48:50,320 INFO L271 PluginConnector]: Initializing Witness Printer...
[2022-11-02 20:48:50,320 INFO L275 PluginConnector]: Witness Printer initialized
[2022-11-02 20:48:50,321 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:48:48" (3/4) ...
[2022-11-02 20:48:50,322 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample
[2022-11-02 20:48:50,367 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a783af7b-cce8-4b2c-a1ff-7e10c680d114/bin/uautomizer-Dbtcem3rbc/witness.graphml
[2022-11-02 20:48:50,367 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2022-11-02 20:48:50,368 INFO L158 Benchmark]: Toolchain (without parser) took 2935.58ms. Allocated memory was 96.5MB in the beginning and 132.1MB in the end (delta: 35.7MB). Free memory was 62.1MB in the beginning and 83.3MB in the end (delta: -21.3MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB.
[2022-11-02 20:48:50,368 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 96.5MB. Free memory was 68.3MB in the beginning and 68.3MB in the end (delta: 29.9kB). There was no memory consumed. Max. memory is 16.1GB.
[2022-11-02 20:48:50,369 INFO L158 Benchmark]: CACSL2BoogieTranslator took 258.98ms. Allocated memory is still 96.5MB. Free memory was 61.9MB in the beginning and 73.5MB in the end (delta: -11.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
[2022-11-02 20:48:50,369 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.54ms. Allocated memory is still 96.5MB. Free memory was 73.5MB in the beginning and 72.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB.
[2022-11-02 20:48:50,369 INFO L158 Benchmark]: Boogie Preprocessor took 33.21ms. Allocated memory is still 96.5MB. Free memory was 72.2MB in the beginning and 71.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2022-11-02 20:48:50,370 INFO L158 Benchmark]: RCFGBuilder took 348.14ms. Allocated memory is still 96.5MB. Free memory was 71.0MB in the beginning and 61.4MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
[2022-11-02 20:48:50,370 INFO L158 Benchmark]: TraceAbstraction took 2199.39ms. Allocated memory was 96.5MB in the beginning and 132.1MB in the end (delta: 35.7MB). Free memory was 61.0MB in the beginning and 86.2MB in the end (delta: -25.2MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB.
[2022-11-02 20:48:50,371 INFO L158 Benchmark]: Witness Printer took 47.73ms. Allocated memory is still 132.1MB. Free memory was 86.2MB in the beginning and 83.3MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB.
[2022-11-02 20:48:50,372 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.31ms. Allocated memory is still 96.5MB. Free memory was 68.3MB in the beginning and 68.3MB in the end (delta: 29.9kB). There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 258.98ms. Allocated memory is still 96.5MB. Free memory was 61.9MB in the beginning and 73.5MB in the end (delta: -11.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 39.54ms. Allocated memory is still 96.5MB. Free memory was 73.5MB in the beginning and 72.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB.
* Boogie Preprocessor took 33.21ms. Allocated memory is still 96.5MB. Free memory was 72.2MB in the beginning and 71.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 348.14ms. Allocated memory is still 96.5MB. Free memory was 71.0MB in the beginning and 61.4MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
* TraceAbstraction took 2199.39ms. Allocated memory was 96.5MB in the beginning and 132.1MB in the end (delta: 35.7MB). Free memory was 61.0MB in the beginning and 86.2MB in the end (delta: -25.2MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB.
* Witness Printer took 47.73ms. Allocated memory is still 132.1MB. Free memory was 86.2MB in the beginning and 83.3MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. 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:
[L2] int* p;
[L3] int i = 0;
VAL [i=0]
[L3] COND TRUE i < 10
[L4] int a[10];
[L5] p = a
VAL [a={3:0}, i=0, p={3:0}]
[L6] p[0] = 1
VAL [a={3:0}, i=0, p={3:0}]
[L3] i++
[L3] COND TRUE i < 10
[L4] int a[10];
[L5] p = a
VAL [a={4:0}, i=1, p={4:0}]
[L6] p[0] = 1
VAL [a={4:0}, i=1, p={4:0}]
[L3] i++
[L3] COND TRUE i < 10
[L4] int a[10];
[L5] p = a
VAL [a={5:0}, i=2, p={5:0}]
[L6] p[0] = 1
VAL [a={5:0}, i=2, p={5:0}]
[L3] i++
[L3] COND TRUE i < 10
[L4] int a[10];
[L5] p = a
VAL [a={6:0}, i=3, p={6:0}]
[L6] p[0] = 1
VAL [a={6:0}, i=3, p={6:0}]
[L3] i++
[L3] COND TRUE i < 10
[L4] int a[10];
[L5] p = a
VAL [a={7:0}, i=4, p={7:0}]
[L6] p[0] = 1
VAL [a={7:0}, i=4, p={7:0}]
[L3] i++
[L3] COND TRUE i < 10
[L4] int a[10];
[L5] p = a
VAL [a={8:0}, i=5, p={8:0}]
[L6] p[0] = 1
VAL [a={8:0}, i=5, p={8:0}]
[L3] i++
[L3] COND TRUE i < 10
[L4] int a[10];
[L5] p = a
VAL [a={9:0}, i=6, p={9:0}]
[L6] p[0] = 1
VAL [a={9:0}, i=6, p={9:0}]
[L3] i++
[L3] COND TRUE i < 10
[L4] int a[10];
[L5] p = a
VAL [a={10:0}, i=7, p={10:0}]
[L6] p[0] = 1
VAL [a={10:0}, i=7, p={10:0}]
[L3] i++
[L3] COND TRUE i < 10
[L4] int a[10];
[L5] p = a
VAL [a={11:0}, i=8, p={11:0}]
[L6] p[0] = 1
VAL [a={11:0}, i=8, p={11:0}]
[L3] i++
[L3] COND TRUE i < 10
[L4] int a[10];
[L5] p = a
VAL [a={2:0}, i=9, p={2:0}]
[L6] p[0] = 1
VAL [a={2:0}, i=9, p={2:0}]
[L3] i++
[L3] COND FALSE !(i < 10)
VAL [i=10, p={2:0}]
[L8] p[0] = 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 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, 15 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 7, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 43 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 43 mSDsluCounter, 121 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 64 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 59 IncrementalHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 57 mSDtfsCounter, 59 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=6, InterpolantAutomatonStates: 29, 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, 6 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 191 SizeOfPredicates, 0 NumberOfNonLiveVariables, 178 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 0/69 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!
[2022-11-02 20:48:50,419 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a783af7b-cce8-4b2c-a1ff-7e10c680d114/bin/uautomizer-Dbtcem3rbc/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)