./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memset3_-write.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 678e0110 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_48655852-e8ce-4fb3-8e7e-446bb09cc81a/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_48655852-e8ce-4fb3-8e7e-446bb09cc81a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_48655852-e8ce-4fb3-8e7e-446bb09cc81a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_48655852-e8ce-4fb3-8e7e-446bb09cc81a/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memset3_-write.c -s /tmp/vcloud-vcloud-master/worker/run_dir_48655852-e8ce-4fb3-8e7e-446bb09cc81a/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_48655852-e8ce-4fb3-8e7e-446bb09cc81a/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 97106d24c91338d3a7f71605e6dcf95bdff73f56 ................................................................................................................................................................................................................................................................................. 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 0.1.24-678e011 [2019-11-19 22:56:21,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 22:56:21,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 22:56:21,920 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 22:56:21,920 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 22:56:21,921 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 22:56:21,923 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 22:56:21,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 22:56:21,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 22:56:21,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 22:56:21,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 22:56:21,930 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 22:56:21,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 22:56:21,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 22:56:21,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 22:56:21,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 22:56:21,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 22:56:21,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 22:56:21,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 22:56:21,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 22:56:21,940 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 22:56:21,941 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 22:56:21,943 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 22:56:21,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 22:56:21,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 22:56:21,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 22:56:21,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 22:56:21,948 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 22:56:21,948 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 22:56:21,949 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 22:56:21,950 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 22:56:21,950 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 22:56:21,951 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 22:56:21,952 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 22:56:21,953 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 22:56:21,953 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 22:56:21,954 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 22:56:21,954 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 22:56:21,954 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 22:56:21,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 22:56:21,956 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 22:56:21,957 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_48655852-e8ce-4fb3-8e7e-446bb09cc81a/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-19 22:56:21,970 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 22:56:21,970 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 22:56:21,971 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 22:56:21,971 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 22:56:21,971 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 22:56:21,972 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 22:56:21,972 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 22:56:21,972 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-19 22:56:21,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 22:56:21,973 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 22:56:21,973 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 22:56:21,973 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-19 22:56:21,973 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-19 22:56:21,973 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-19 22:56:21,974 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 22:56:21,974 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-19 22:56:21,974 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-19 22:56:21,974 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 22:56:21,974 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 22:56:21,975 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 22:56:21,975 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 22:56:21,975 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 22:56:21,975 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 22:56:21,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 22:56:21,976 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 22:56:21,976 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 22:56:21,976 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-19 22:56:21,977 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-19 22:56:21,977 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-19 22:56:21,977 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_48655852-e8ce-4fb3-8e7e-446bb09cc81a/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 -> 97106d24c91338d3a7f71605e6dcf95bdff73f56 [2019-11-19 22:56:22,113 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 22:56:22,122 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 22:56:22,126 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 22:56:22,127 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 22:56:22,127 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 22:56:22,128 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_48655852-e8ce-4fb3-8e7e-446bb09cc81a/bin/uautomizer/../../sv-benchmarks/c/ldv-memsafety/memset3_-write.c [2019-11-19 22:56:22,179 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_48655852-e8ce-4fb3-8e7e-446bb09cc81a/bin/uautomizer/data/37d8496a7/4409130989ac4c11b150ff056a2d66ce/FLAG2dfc45354 [2019-11-19 22:56:22,590 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 22:56:22,591 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_48655852-e8ce-4fb3-8e7e-446bb09cc81a/sv-benchmarks/c/ldv-memsafety/memset3_-write.c [2019-11-19 22:56:22,596 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_48655852-e8ce-4fb3-8e7e-446bb09cc81a/bin/uautomizer/data/37d8496a7/4409130989ac4c11b150ff056a2d66ce/FLAG2dfc45354 [2019-11-19 22:56:22,611 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_48655852-e8ce-4fb3-8e7e-446bb09cc81a/bin/uautomizer/data/37d8496a7/4409130989ac4c11b150ff056a2d66ce [2019-11-19 22:56:22,614 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 22:56:22,616 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-19 22:56:22,618 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 22:56:22,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 22:56:22,622 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 22:56:22,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:56:22" (1/1) ... [2019-11-19 22:56:22,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ce9acd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:56:22, skipping insertion in model container [2019-11-19 22:56:22,630 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:56:22" (1/1) ... [2019-11-19 22:56:22,637 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 22:56:22,653 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 22:56:22,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:56:22,960 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 22:56:22,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:56:22,993 INFO L192 MainTranslator]: Completed translation [2019-11-19 22:56:22,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:56:22 WrapperNode [2019-11-19 22:56:22,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 22:56:22,994 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 22:56:22,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 22:56:22,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 22:56:23,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:56:22" (1/1) ... [2019-11-19 22:56:23,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:56:22" (1/1) ... [2019-11-19 22:56:23,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:56:22" (1/1) ... [2019-11-19 22:56:23,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:56:22" (1/1) ... [2019-11-19 22:56:23,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:56:22" (1/1) ... [2019-11-19 22:56:23,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:56:22" (1/1) ... [2019-11-19 22:56:23,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:56:22" (1/1) ... [2019-11-19 22:56:23,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 22:56:23,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 22:56:23,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 22:56:23,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 22:56:23,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:56:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48655852-e8ce-4fb3-8e7e-446bb09cc81a/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 [2019-11-19 22:56:23,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-19 22:56:23,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 22:56:23,091 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-19 22:56:23,092 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-11-19 22:56:23,092 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-11-19 22:56:23,092 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-19 22:56:23,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-19 22:56:23,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-11-19 22:56:23,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-19 22:56:23,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-19 22:56:23,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 22:56:23,202 WARN L736 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-19 22:56:23,303 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 22:56:23,303 INFO L285 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-19 22:56:23,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:56:23 BoogieIcfgContainer [2019-11-19 22:56:23,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 22:56:23,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 22:56:23,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 22:56:23,321 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 22:56:23,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 10:56:22" (1/3) ... [2019-11-19 22:56:23,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32f615e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:56:23, skipping insertion in model container [2019-11-19 22:56:23,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:56:22" (2/3) ... [2019-11-19 22:56:23,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32f615e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:56:23, skipping insertion in model container [2019-11-19 22:56:23,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:56:23" (3/3) ... [2019-11-19 22:56:23,324 INFO L109 eAbstractionObserver]: Analyzing ICFG memset3_-write.c [2019-11-19 22:56:23,342 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 22:56:23,348 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-19 22:56:23,371 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-19 22:56:23,390 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 22:56:23,390 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-19 22:56:23,390 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 22:56:23,390 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 22:56:23,391 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 22:56:23,391 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 22:56:23,391 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 22:56:23,391 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 22:56:23,420 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-11-19 22:56:23,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-19 22:56:23,428 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:56:23,429 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:56:23,429 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-19 22:56:23,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:56:23,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1092847368, now seen corresponding path program 1 times [2019-11-19 22:56:23,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:56:23,443 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [901497648] [2019-11-19 22:56:23,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48655852-e8ce-4fb3-8e7e-446bb09cc81a/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 [2019-11-19 22:56:23,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:56:23,527 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-19 22:56:23,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:56:23,581 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-19 22:56:23,581 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:56:23,587 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:56:23,587 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:56:23,588 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-19 22:56:23,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:56:23,607 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:56:23,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:56:23,626 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [901497648] [2019-11-19 22:56:23,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:56:23,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-19 22:56:23,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227189719] [2019-11-19 22:56:23,631 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 22:56:23,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:56:23,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 22:56:23,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 22:56:23,644 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2019-11-19 22:56:23,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:56:23,694 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2019-11-19 22:56:23,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 22:56:23,695 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-19 22:56:23,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:56:23,702 INFO L225 Difference]: With dead ends: 19 [2019-11-19 22:56:23,702 INFO L226 Difference]: Without dead ends: 16 [2019-11-19 22:56:23,704 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 22:56:23,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-19 22:56:23,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-19 22:56:23,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-19 22:56:23,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-11-19 22:56:23,730 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2019-11-19 22:56:23,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:56:23,730 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-11-19 22:56:23,731 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 22:56:23,731 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-11-19 22:56:23,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-19 22:56:23,731 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:56:23,731 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:56:23,932 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:56:23,932 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-19 22:56:23,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:56:23,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1092847367, now seen corresponding path program 1 times [2019-11-19 22:56:23,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:56:23,933 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [412600026] [2019-11-19 22:56:23,933 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_48655852-e8ce-4fb3-8e7e-446bb09cc81a/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:56:23,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:56:24,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:56:24,032 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-19 22:56:24,032 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-19 22:56:24,234 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:56:24,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 10:56:24 BoogieIcfgContainer [2019-11-19 22:56:24,253 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 22:56:24,254 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 22:56:24,254 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 22:56:24,254 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 22:56:24,255 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:56:23" (3/4) ... [2019-11-19 22:56:24,257 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-19 22:56:24,297 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_48655852-e8ce-4fb3-8e7e-446bb09cc81a/bin/uautomizer/witness.graphml [2019-11-19 22:56:24,297 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 22:56:24,299 INFO L168 Benchmark]: Toolchain (without parser) took 1683.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 952.8 MB in the beginning and 1.1 GB in the end (delta: -109.8 MB). Peak memory consumption was 28.1 MB. Max. memory is 11.5 GB. [2019-11-19 22:56:24,300 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:56:24,300 INFO L168 Benchmark]: CACSL2BoogieTranslator took 375.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 952.8 MB in the beginning and 1.1 GB in the end (delta: -175.2 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. [2019-11-19 22:56:24,301 INFO L168 Benchmark]: Boogie Preprocessor took 38.70 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. [2019-11-19 22:56:24,301 INFO L168 Benchmark]: RCFGBuilder took 271.67 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: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. [2019-11-19 22:56:24,302 INFO L168 Benchmark]: TraceAbstraction took 948.10 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: 40.3 MB). Peak memory consumption was 40.3 MB. Max. memory is 11.5 GB. [2019-11-19 22:56:24,303 INFO L168 Benchmark]: Witness Printer took 43.73 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. [2019-11-19 22:56:24,305 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 375.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 952.8 MB in the beginning and 1.1 GB in the end (delta: -175.2 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 38.70 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 271.67 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: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 948.10 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: 40.3 MB). Peak memory consumption was 40.3 MB. Max. memory is 11.5 GB. * Witness Printer took 43.73 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: 29]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L26] struct ppp_comp_stats cstats ; [L27] void *point; [L28] point = (void *)(& cstats) VAL [cstats={3:0}, point={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 3 error locations. Result: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 1 SDslu, 10 SDs, 0 SdLazy, 8 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 SizeOfPredicates, 2 NumberOfNonLiveVariables, 29 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...