./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/scopes2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b5699aa Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8cd24161-595d-4517-a560-8b912d9506e4/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_8cd24161-595d-4517-a560-8b912d9506e4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8cd24161-595d-4517-a560-8b912d9506e4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8cd24161-595d-4517-a560-8b912d9506e4/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/scopes2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8cd24161-595d-4517-a560-8b912d9506e4/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8cd24161-595d-4517-a560-8b912d9506e4/bin/uautomizer --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 a06ac35b6270d716926f4cab09091bb160bdd736 ............................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-6b5699a [2019-11-25 08:49:25,031 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:49:25,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:49:25,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:49:25,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:49:25,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:49:25,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:49:25,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:49:25,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:49:25,051 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:49:25,052 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:49:25,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:49:25,053 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:49:25,054 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:49:25,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:49:25,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:49:25,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:49:25,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:49:25,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:49:25,062 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:49:25,063 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:49:25,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:49:25,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:49:25,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:49:25,069 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:49:25,069 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:49:25,069 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:49:25,070 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:49:25,070 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:49:25,071 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:49:25,071 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:49:25,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:49:25,073 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:49:25,073 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:49:25,074 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:49:25,074 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:49:25,075 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:49:25,075 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:49:25,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:49:25,076 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:49:25,077 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:49:25,077 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8cd24161-595d-4517-a560-8b912d9506e4/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-25 08:49:25,090 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:49:25,090 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:49:25,091 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:49:25,091 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:49:25,091 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:49:25,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:49:25,092 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:49:25,092 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:49:25,092 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:49:25,092 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:49:25,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:49:25,092 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-25 08:49:25,093 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-25 08:49:25,093 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-25 08:49:25,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:49:25,093 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-25 08:49:25,093 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-25 08:49:25,094 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-25 08:49:25,094 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:49:25,094 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:49:25,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:49:25,094 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:49:25,094 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:49:25,095 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:49:25,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:49:25,095 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:49:25,095 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:49:25,095 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-25 08:49:25,096 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-25 08:49:25,096 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-25 08:49:25,096 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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-vcloud-master/worker/run_dir_8cd24161-595d-4517-a560-8b912d9506e4/bin/uautomizer 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 -> a06ac35b6270d716926f4cab09091bb160bdd736 [2019-11-25 08:49:25,261 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:49:25,275 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:49:25,278 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:49:25,280 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:49:25,282 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:49:25,283 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8cd24161-595d-4517-a560-8b912d9506e4/bin/uautomizer/../../sv-benchmarks/c/memsafety-ext3/scopes2.c [2019-11-25 08:49:25,347 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8cd24161-595d-4517-a560-8b912d9506e4/bin/uautomizer/data/d471b591d/96a7d6c9e30943fa889825563f2da838/FLAG5b052f146 [2019-11-25 08:49:25,739 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:49:25,739 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8cd24161-595d-4517-a560-8b912d9506e4/sv-benchmarks/c/memsafety-ext3/scopes2.c [2019-11-25 08:49:25,745 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8cd24161-595d-4517-a560-8b912d9506e4/bin/uautomizer/data/d471b591d/96a7d6c9e30943fa889825563f2da838/FLAG5b052f146 [2019-11-25 08:49:26,166 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8cd24161-595d-4517-a560-8b912d9506e4/bin/uautomizer/data/d471b591d/96a7d6c9e30943fa889825563f2da838 [2019-11-25 08:49:26,168 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:49:26,170 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-25 08:49:26,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:49:26,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:49:26,174 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:49:26,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:49:26" (1/1) ... [2019-11-25 08:49:26,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38539bba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:26, skipping insertion in model container [2019-11-25 08:49:26,178 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:49:26" (1/1) ... [2019-11-25 08:49:26,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:49:26,202 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:49:26,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:49:26,450 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:49:26,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:49:26,482 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:49:26,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:26 WrapperNode [2019-11-25 08:49:26,482 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:49:26,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:49:26,483 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:49:26,483 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:49:26,496 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:26" (1/1) ... [2019-11-25 08:49:26,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:26" (1/1) ... [2019-11-25 08:49:26,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:26" (1/1) ... [2019-11-25 08:49:26,506 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:26" (1/1) ... [2019-11-25 08:49:26,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:26" (1/1) ... [2019-11-25 08:49:26,515 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:26" (1/1) ... [2019-11-25 08:49:26,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:26" (1/1) ... [2019-11-25 08:49:26,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:49:26,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:49:26,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:49:26,520 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:49:26,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cd24161-595d-4517-a560-8b912d9506e4/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:49:26,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-25 08:49:26,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:49:26,578 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-25 08:49:26,578 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-25 08:49:26,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-25 08:49:26,578 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-25 08:49:26,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:49:26,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2019-11-25 08:49:26,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:49:26,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-25 08:49:26,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-25 08:49:26,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2019-11-25 08:49:26,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:49:26,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2019-11-25 08:49:26,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-25 08:49:26,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2019-11-25 08:49:26,802 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:49:26,802 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-25 08:49:26,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:49:26 BoogieIcfgContainer [2019-11-25 08:49:26,803 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:49:26,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:49:26,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:49:26,807 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:49:26,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:49:26" (1/3) ... [2019-11-25 08:49:26,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76497025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:49:26, skipping insertion in model container [2019-11-25 08:49:26,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:49:26" (2/3) ... [2019-11-25 08:49:26,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76497025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:49:26, skipping insertion in model container [2019-11-25 08:49:26,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:49:26" (3/3) ... [2019-11-25 08:49:26,811 INFO L109 eAbstractionObserver]: Analyzing ICFG scopes2.c [2019-11-25 08:49:26,828 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:49:26,834 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-11-25 08:49:26,844 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-11-25 08:49:26,864 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:49:26,864 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-25 08:49:26,865 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:49:26,865 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:49:26,865 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:49:26,865 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:49:26,865 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:49:26,866 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:49:26,878 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-11-25 08:49:26,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-25 08:49:26,893 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:49:26,894 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:49:26,894 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-25 08:49:26,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:49:26,900 INFO L82 PathProgramCache]: Analyzing trace with hash 2028001052, now seen corresponding path program 1 times [2019-11-25 08:49:26,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:49:26,912 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1966153773] [2019-11-25 08:49:26,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8cd24161-595d-4517-a560-8b912d9506e4/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:49:27,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:49:27,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:49:27,116 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-25 08:49:27,117 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:49:27,320 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:49:27,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:49:27 BoogieIcfgContainer [2019-11-25 08:49:27,341 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:49:27,341 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:49:27,341 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:49:27,342 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:49:27,342 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:49:26" (3/4) ... [2019-11-25 08:49:27,344 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-25 08:49:27,380 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8cd24161-595d-4517-a560-8b912d9506e4/bin/uautomizer/witness.graphml [2019-11-25 08:49:27,380 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:49:27,382 INFO L168 Benchmark]: Toolchain (without parser) took 1211.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -124.0 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:27,382 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:49:27,383 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -173.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:27,383 INFO L168 Benchmark]: Boogie Preprocessor took 35.98 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:49:27,384 INFO L168 Benchmark]: RCFGBuilder took 283.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:27,384 INFO L168 Benchmark]: TraceAbstraction took 536.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:49:27,385 INFO L168 Benchmark]: Witness Printer took 38.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:49:27,387 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 311.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 944.8 MB in the beginning and 1.1 GB in the end (delta: -173.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.98 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 283.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 536.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. * Witness Printer took 38.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L5] int *myPointerA = ((void*) 0); [L6] int *myPointerB = ((void*) 0); VAL [myPointerA={0:0}, myPointerB={0:0}] [L8] COND TRUE __VERIFIER_nondet_int() [L10] int myNumberA = 7; [L11] myPointerA = &myNumberA [L10] int myNumberA = 7; VAL [myPointerA={1073741823:0}, myPointerB={0:0}] [L15] int myNumberB = 3; [L16] myPointerB = &myNumberB VAL [myNumberB={1073741824:0}, myPointerA={1073741823:0}, myPointerB={1073741824:0}] [L18] \read(*myPointerA) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 20 locations, 5 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...