./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-write.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a1577e98-b5bc-4b62-ba0b-448697dd1947/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a1577e98-b5bc-4b62-ba0b-448697dd1947/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a1577e98-b5bc-4b62-ba0b-448697dd1947/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a1577e98-b5bc-4b62-ba0b-448697dd1947/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-write.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a1577e98-b5bc-4b62-ba0b-448697dd1947/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a1577e98-b5bc-4b62-ba0b-448697dd1947/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 0dfe0f165ef563fbd088ad0368faf44ddd32870a .......................................................................................................................................................................................................................................................................... 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 --- This is Ultimate 0.1.25-f470102 [2019-12-07 12:55:55,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 12:55:55,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 12:55:55,879 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 12:55:55,879 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 12:55:55,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 12:55:55,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 12:55:55,882 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 12:55:55,883 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 12:55:55,884 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 12:55:55,884 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 12:55:55,885 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 12:55:55,885 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 12:55:55,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 12:55:55,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 12:55:55,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 12:55:55,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 12:55:55,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 12:55:55,890 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 12:55:55,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 12:55:55,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 12:55:55,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 12:55:55,895 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 12:55:55,895 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 12:55:55,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 12:55:55,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 12:55:55,897 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 12:55:55,898 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 12:55:55,898 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 12:55:55,898 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 12:55:55,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 12:55:55,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 12:55:55,899 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 12:55:55,900 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 12:55:55,900 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 12:55:55,901 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 12:55:55,901 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 12:55:55,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 12:55:55,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 12:55:55,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 12:55:55,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 12:55:55,903 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a1577e98-b5bc-4b62-ba0b-448697dd1947/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-12-07 12:55:55,912 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 12:55:55,912 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 12:55:55,912 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 12:55:55,913 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 12:55:55,913 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 12:55:55,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 12:55:55,913 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 12:55:55,913 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 12:55:55,913 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 12:55:55,913 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 12:55:55,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 12:55:55,914 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 12:55:55,914 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 12:55:55,914 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-07 12:55:55,914 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 12:55:55,914 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 12:55:55,914 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 12:55:55,914 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 12:55:55,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 12:55:55,915 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 12:55:55,915 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 12:55:55,915 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 12:55:55,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 12:55:55,915 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 12:55:55,915 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 12:55:55,915 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 12:55:55,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 12:55:55,916 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 12:55:55,916 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_a1577e98-b5bc-4b62-ba0b-448697dd1947/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 -> 0dfe0f165ef563fbd088ad0368faf44ddd32870a [2019-12-07 12:55:56,018 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 12:55:56,026 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 12:55:56,028 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 12:55:56,029 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 12:55:56,029 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 12:55:56,030 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a1577e98-b5bc-4b62-ba0b-448697dd1947/bin/uautomizer/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-write.c [2019-12-07 12:55:56,067 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a1577e98-b5bc-4b62-ba0b-448697dd1947/bin/uautomizer/data/0057faab9/f46bfbdbf5d8454abd3a4119f00799e9/FLAG83ccb1900 [2019-12-07 12:55:56,538 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 12:55:56,539 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a1577e98-b5bc-4b62-ba0b-448697dd1947/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength_-write.c [2019-12-07 12:55:56,543 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a1577e98-b5bc-4b62-ba0b-448697dd1947/bin/uautomizer/data/0057faab9/f46bfbdbf5d8454abd3a4119f00799e9/FLAG83ccb1900 [2019-12-07 12:55:56,552 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a1577e98-b5bc-4b62-ba0b-448697dd1947/bin/uautomizer/data/0057faab9/f46bfbdbf5d8454abd3a4119f00799e9 [2019-12-07 12:55:56,553 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 12:55:56,554 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-07 12:55:56,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 12:55:56,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 12:55:56,557 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 12:55:56,558 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:55:56" (1/1) ... [2019-12-07 12:55:56,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b51be93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:55:56, skipping insertion in model container [2019-12-07 12:55:56,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:55:56" (1/1) ... [2019-12-07 12:55:56,564 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 12:55:56,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 12:55:56,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:55:56,713 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 12:55:56,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 12:55:56,739 INFO L208 MainTranslator]: Completed translation [2019-12-07 12:55:56,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:55:56 WrapperNode [2019-12-07 12:55:56,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 12:55:56,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 12:55:56,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 12:55:56,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 12:55:56,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:55:56" (1/1) ... [2019-12-07 12:55:56,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:55:56" (1/1) ... [2019-12-07 12:55:56,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:55:56" (1/1) ... [2019-12-07 12:55:56,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:55:56" (1/1) ... [2019-12-07 12:55:56,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:55:56" (1/1) ... [2019-12-07 12:55:56,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:55:56" (1/1) ... [2019-12-07 12:55:56,761 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:55:56" (1/1) ... [2019-12-07 12:55:56,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 12:55:56,763 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 12:55:56,763 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 12:55:56,763 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 12:55:56,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:55:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a1577e98-b5bc-4b62-ba0b-448697dd1947/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 [2019-12-07 12:55:56,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-12-07 12:55:56,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 12:55:56,801 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2019-12-07 12:55:56,802 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-12-07 12:55:56,802 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2019-12-07 12:55:56,802 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 12:55:56,802 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-12-07 12:55:56,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 12:55:56,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 12:55:56,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 12:55:56,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-12-07 12:55:56,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 12:55:56,971 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 12:55:56,971 INFO L287 CfgBuilder]: Removed 3 assume(true) statements. [2019-12-07 12:55:56,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:55:56 BoogieIcfgContainer [2019-12-07 12:55:56,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 12:55:56,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 12:55:56,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 12:55:56,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 12:55:56,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:55:56" (1/3) ... [2019-12-07 12:55:56,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e1ada7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:55:56, skipping insertion in model container [2019-12-07 12:55:56,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:55:56" (2/3) ... [2019-12-07 12:55:56,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e1ada7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:55:56, skipping insertion in model container [2019-12-07 12:55:56,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:55:56" (3/3) ... [2019-12-07 12:55:56,977 INFO L109 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength_-write.c [2019-12-07 12:55:56,984 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 12:55:56,989 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2019-12-07 12:55:56,997 INFO L249 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2019-12-07 12:55:57,009 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 12:55:57,009 INFO L374 AbstractCegarLoop]: Hoare is false [2019-12-07 12:55:57,009 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 12:55:57,009 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 12:55:57,009 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 12:55:57,010 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 12:55:57,010 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 12:55:57,010 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 12:55:57,020 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2019-12-07 12:55:57,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 12:55:57,028 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:55:57,029 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:55:57,029 INFO L410 AbstractCegarLoop]: === Iteration 1 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 12:55:57,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:55:57,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1909189377, now seen corresponding path program 1 times [2019-12-07 12:55:57,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:55:57,039 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666065118] [2019-12-07 12:55:57,039 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:55:57,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:55:57,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 12:55:57,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 12:55:57,158 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666065118] [2019-12-07 12:55:57,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 12:55:57,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 12:55:57,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580870590] [2019-12-07 12:55:57,162 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 12:55:57,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 12:55:57,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 12:55:57,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 12:55:57,173 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 4 states. [2019-12-07 12:55:57,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 12:55:57,287 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2019-12-07 12:55:57,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 12:55:57,288 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-07 12:55:57,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 12:55:57,294 INFO L225 Difference]: With dead ends: 58 [2019-12-07 12:55:57,294 INFO L226 Difference]: Without dead ends: 54 [2019-12-07 12:55:57,296 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 12:55:57,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-12-07 12:55:57,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2019-12-07 12:55:57,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-12-07 12:55:57,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2019-12-07 12:55:57,323 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 10 [2019-12-07 12:55:57,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 12:55:57,323 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2019-12-07 12:55:57,323 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 12:55:57,323 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2019-12-07 12:55:57,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 12:55:57,323 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 12:55:57,323 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 12:55:57,324 INFO L410 AbstractCegarLoop]: === Iteration 2 === [fooErr1REQUIRES_VIOLATION, fooErr0ASSERT_VIOLATIONARRAY_INDEX, fooErr2REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 12:55:57,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 12:55:57,324 INFO L82 PathProgramCache]: Analyzing trace with hash -941983064, now seen corresponding path program 1 times [2019-12-07 12:55:57,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 12:55:57,324 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185795145] [2019-12-07 12:55:57,324 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 12:55:57,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:55:57,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 12:55:57,365 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 12:55:57,365 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 12:55:57,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 12:55:57 BoogieIcfgContainer [2019-12-07 12:55:57,380 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 12:55:57,380 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 12:55:57,380 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 12:55:57,381 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 12:55:57,381 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:55:56" (3/4) ... [2019-12-07 12:55:57,382 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 12:55:57,408 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a1577e98-b5bc-4b62-ba0b-448697dd1947/bin/uautomizer/witness.graphml [2019-12-07 12:55:57,409 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 12:55:57,410 INFO L168 Benchmark]: Toolchain (without parser) took 855.31 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 90.7 MB). Free memory was 940.6 MB in the beginning and 1.0 GB in the end (delta: -73.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 11.5 GB. [2019-12-07 12:55:57,410 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 959.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 12:55:57,411 INFO L168 Benchmark]: CACSL2BoogieTranslator took 184.47 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 90.7 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -147.6 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-12-07 12:55:57,411 INFO L168 Benchmark]: Boogie Preprocessor took 22.96 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-12-07 12:55:57,412 INFO L168 Benchmark]: RCFGBuilder took 209.35 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-12-07 12:55:57,412 INFO L168 Benchmark]: TraceAbstraction took 407.47 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 47.3 MB). Peak memory consumption was 47.3 MB. Max. memory is 11.5 GB. [2019-12-07 12:55:57,412 INFO L168 Benchmark]: Witness Printer took 28.29 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-12-07 12:55:57,414 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 959.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 184.47 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 90.7 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -147.6 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.96 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 209.35 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 407.47 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 47.3 MB). Peak memory consumption was 47.3 MB. Max. memory is 11.5 GB. * Witness Printer took 28.29 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: array index can be out of bounds array index can be out of bounds We found a FailurePath: [L21] int i, b[100]; [L22] i = 0 VAL [b={2:0}, i=0] [L22] COND TRUE i < 100 VAL [b={2:0}, i=0] [L23] CALL foo(i, b, i + 1) VAL [\old(n)=0, \old(size)=1, b={2:0}] [L13] int a[n], i; [L14] i = 0 VAL [\old(n)=0, \old(size)=1, b={2:0}, b={2:0}, i=0, n=0, size=1] [L14] COND TRUE i < size VAL [\old(n)=0, \old(size)=1, b={2:0}, b={2:0}, i=0, n=0, size=1] [L15] a[i] VAL [\old(n)=0, \old(size)=1, b={2:0}, b={2:0}, i=0, n=0, size=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 40 locations, 8 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 27 SDslu, 19 SDs, 0 SdLazy, 64 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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, 15 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 180 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...