./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memset2_-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_32e5e255-59cd-4375-a6f4-8e5c918a2eef/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_32e5e255-59cd-4375-a6f4-8e5c918a2eef/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_32e5e255-59cd-4375-a6f4-8e5c918a2eef/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_32e5e255-59cd-4375-a6f4-8e5c918a2eef/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memset2_-write.c -s /tmp/vcloud-vcloud-master/worker/run_dir_32e5e255-59cd-4375-a6f4-8e5c918a2eef/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_32e5e255-59cd-4375-a6f4-8e5c918a2eef/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 504b8754db5656e557502f2f9e958956c9b0cd94 ............................................................................................................................................................................................................................................................................... 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 [2019-11-20 03:31:25,416 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 03:31:25,419 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 03:31:25,436 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 03:31:25,437 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 03:31:25,439 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 03:31:25,441 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 03:31:25,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 03:31:25,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 03:31:25,461 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 03:31:25,462 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 03:31:25,464 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 03:31:25,464 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 03:31:25,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 03:31:25,470 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 03:31:25,472 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 03:31:25,473 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 03:31:25,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 03:31:25,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 03:31:25,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 03:31:25,490 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 03:31:25,492 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 03:31:25,495 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 03:31:25,496 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 03:31:25,500 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 03:31:25,500 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 03:31:25,500 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 03:31:25,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 03:31:25,503 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 03:31:25,504 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 03:31:25,504 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 03:31:25,506 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 03:31:25,506 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 03:31:25,508 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 03:31:25,509 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 03:31:25,509 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 03:31:25,510 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 03:31:25,510 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 03:31:25,510 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 03:31:25,511 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 03:31:25,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 03:31:25,514 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_32e5e255-59cd-4375-a6f4-8e5c918a2eef/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-20 03:31:25,544 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 03:31:25,555 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 03:31:25,557 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 03:31:25,557 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 03:31:25,557 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 03:31:25,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 03:31:25,558 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 03:31:25,558 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 03:31:25,559 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 03:31:25,559 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 03:31:25,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 03:31:25,559 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-20 03:31:25,560 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-20 03:31:25,560 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-20 03:31:25,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 03:31:25,560 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 03:31:25,561 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 03:31:25,561 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 03:31:25,561 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 03:31:25,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 03:31:25,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 03:31:25,562 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 03:31:25,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 03:31:25,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 03:31:25,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 03:31:25,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 03:31:25,563 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 03:31:25,563 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 03:31:25,564 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 03:31:25,564 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_32e5e255-59cd-4375-a6f4-8e5c918a2eef/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 -> 504b8754db5656e557502f2f9e958956c9b0cd94 [2019-11-20 03:31:25,749 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 03:31:25,762 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 03:31:25,766 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 03:31:25,768 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 03:31:25,768 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 03:31:25,769 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_32e5e255-59cd-4375-a6f4-8e5c918a2eef/bin/uautomizer/../../sv-benchmarks/c/ldv-memsafety/memset2_-write.c [2019-11-20 03:31:25,833 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_32e5e255-59cd-4375-a6f4-8e5c918a2eef/bin/uautomizer/data/c0f989979/5bc3960bdc6b4f22b65957dad7b314ed/FLAG2c35115ab [2019-11-20 03:31:26,245 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 03:31:26,246 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_32e5e255-59cd-4375-a6f4-8e5c918a2eef/sv-benchmarks/c/ldv-memsafety/memset2_-write.c [2019-11-20 03:31:26,251 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_32e5e255-59cd-4375-a6f4-8e5c918a2eef/bin/uautomizer/data/c0f989979/5bc3960bdc6b4f22b65957dad7b314ed/FLAG2c35115ab [2019-11-20 03:31:26,616 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_32e5e255-59cd-4375-a6f4-8e5c918a2eef/bin/uautomizer/data/c0f989979/5bc3960bdc6b4f22b65957dad7b314ed [2019-11-20 03:31:26,619 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 03:31:26,620 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-20 03:31:26,621 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 03:31:26,622 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 03:31:26,626 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 03:31:26,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 03:31:26" (1/1) ... [2019-11-20 03:31:26,632 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ed8d722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:31:26, skipping insertion in model container [2019-11-20 03:31:26,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 03:31:26" (1/1) ... [2019-11-20 03:31:26,641 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 03:31:26,664 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 03:31:26,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 03:31:26,904 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 03:31:27,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 03:31:27,068 INFO L192 MainTranslator]: Completed translation [2019-11-20 03:31:27,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:31:27 WrapperNode [2019-11-20 03:31:27,069 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 03:31:27,070 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 03:31:27,070 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 03:31:27,070 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 03:31:27,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:31:27" (1/1) ... [2019-11-20 03:31:27,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:31:27" (1/1) ... [2019-11-20 03:31:27,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:31:27" (1/1) ... [2019-11-20 03:31:27,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:31:27" (1/1) ... [2019-11-20 03:31:27,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:31:27" (1/1) ... [2019-11-20 03:31:27,112 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:31:27" (1/1) ... [2019-11-20 03:31:27,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:31:27" (1/1) ... [2019-11-20 03:31:27,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 03:31:27,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 03:31:27,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 03:31:27,116 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 03:31:27,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:31:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_32e5e255-59cd-4375-a6f4-8e5c918a2eef/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 [2019-11-20 03:31:27,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-20 03:31:27,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 03:31:27,180 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-20 03:31:27,180 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-11-20 03:31:27,180 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-11-20 03:31:27,181 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-20 03:31:27,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 03:31:27,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-11-20 03:31:27,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 03:31:27,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-20 03:31:27,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 03:31:27,302 WARN L736 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-20 03:31:27,389 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 03:31:27,390 INFO L285 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-20 03:31:27,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:31:27 BoogieIcfgContainer [2019-11-20 03:31:27,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 03:31:27,391 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 03:31:27,391 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 03:31:27,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 03:31:27,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 03:31:26" (1/3) ... [2019-11-20 03:31:27,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25631e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 03:31:27, skipping insertion in model container [2019-11-20 03:31:27,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 03:31:27" (2/3) ... [2019-11-20 03:31:27,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25631e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 03:31:27, skipping insertion in model container [2019-11-20 03:31:27,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:31:27" (3/3) ... [2019-11-20 03:31:27,397 INFO L109 eAbstractionObserver]: Analyzing ICFG memset2_-write.c [2019-11-20 03:31:27,418 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 03:31:27,425 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-20 03:31:27,454 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-20 03:31:27,477 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 03:31:27,477 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-20 03:31:27,477 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 03:31:27,477 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 03:31:27,478 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 03:31:27,478 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 03:31:27,478 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 03:31:27,478 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 03:31:27,495 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-11-20 03:31:27,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-20 03:31:27,506 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 03:31:27,507 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:31:27,507 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-20 03:31:27,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:31:27,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1092847368, now seen corresponding path program 1 times [2019-11-20 03:31:27,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 03:31:27,527 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2042649009] [2019-11-20 03:31:27,527 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_32e5e255-59cd-4375-a6f4-8e5c918a2eef/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 [2019-11-20 03:31:27,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 03:31:27,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 03:31:27,752 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 03:31:27,812 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 [2019-11-20 03:31:27,813 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 03:31:27,822 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 03:31:27,823 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 03:31:27,823 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 03:31:27,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:31:27,842 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 03:31:27,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 03:31:27,856 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2042649009] [2019-11-20 03:31:27,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 03:31:27,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 03:31:27,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209264971] [2019-11-20 03:31:27,863 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 03:31:27,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 03:31:27,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 03:31:27,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 03:31:27,879 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2019-11-20 03:31:27,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 03:31:27,940 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2019-11-20 03:31:27,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 03:31:27,941 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-20 03:31:27,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 03:31:27,950 INFO L225 Difference]: With dead ends: 19 [2019-11-20 03:31:27,950 INFO L226 Difference]: Without dead ends: 16 [2019-11-20 03:31:27,952 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 [2019-11-20 03:31:27,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-20 03:31:27,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-20 03:31:27,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-20 03:31:27,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-11-20 03:31:27,984 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2019-11-20 03:31:27,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 03:31:27,984 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-11-20 03:31:27,985 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 03:31:27,985 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-11-20 03:31:27,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-20 03:31:27,985 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 03:31:27,986 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-20 03:31:28,190 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 03:31:28,190 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-20 03:31:28,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 03:31:28,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1092847367, now seen corresponding path program 1 times [2019-11-20 03:31:28,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 03:31:28,191 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [817204911] [2019-11-20 03:31:28,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_32e5e255-59cd-4375-a6f4-8e5c918a2eef/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 [2019-11-20 03:31:28,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:31:28,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 03:31:28,311 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-20 03:31:28,311 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 03:31:28,526 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 03:31:28,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 03:31:28 BoogieIcfgContainer [2019-11-20 03:31:28,546 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 03:31:28,547 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 03:31:28,547 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 03:31:28,547 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 03:31:28,548 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 03:31:27" (3/4) ... [2019-11-20 03:31:28,551 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 03:31:28,590 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_32e5e255-59cd-4375-a6f4-8e5c918a2eef/bin/uautomizer/witness.graphml [2019-11-20 03:31:28,590 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 03:31:28,592 INFO L168 Benchmark]: Toolchain (without parser) took 1971.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -121.3 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. [2019-11-20 03:31:28,593 INFO L168 Benchmark]: CDTParser took 0.34 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. [2019-11-20 03:31:28,594 INFO L168 Benchmark]: CACSL2BoogieTranslator took 448.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -180.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-20 03:31:28,594 INFO L168 Benchmark]: Boogie Preprocessor took 45.79 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. [2019-11-20 03:31:28,595 INFO L168 Benchmark]: RCFGBuilder took 274.74 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-20 03:31:28,596 INFO L168 Benchmark]: TraceAbstraction took 1155.09 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. [2019-11-20 03:31:28,596 INFO L168 Benchmark]: Witness Printer took 43.26 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. [2019-11-20 03:31:28,600 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 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 448.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -180.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 45.79 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 274.74 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1155.09 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 43.26 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: 22]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L21] struct compstat cstats ; VAL [cstats={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 3 error locations. Result: UNSAFE, OverallTime: 1.0s, 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, 0.1s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 27 ConjunctsInSsa, 2 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...