./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memsetNonZero_-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_acc5cbb6-354a-4fb1-b92f-474e6f07f042/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_acc5cbb6-354a-4fb1-b92f-474e6f07f042/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_acc5cbb6-354a-4fb1-b92f-474e6f07f042/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_acc5cbb6-354a-4fb1-b92f-474e6f07f042/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memsetNonZero_-write.c -s /tmp/vcloud-vcloud-master/worker/run_dir_acc5cbb6-354a-4fb1-b92f-474e6f07f042/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_acc5cbb6-354a-4fb1-b92f-474e6f07f042/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 cef7b9fedda26f2b86e76703e63f684bda898c92 ............................................................................................................................................................................................................................................................................... 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 10:55:43,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 10:55:43,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 10:55:43,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 10:55:43,666 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 10:55:43,668 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 10:55:43,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 10:55:43,679 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 10:55:43,684 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 10:55:43,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 10:55:43,690 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 10:55:43,691 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 10:55:43,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 10:55:43,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 10:55:43,695 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 10:55:43,696 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 10:55:43,697 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 10:55:43,698 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 10:55:43,701 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 10:55:43,705 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 10:55:43,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 10:55:43,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 10:55:43,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 10:55:43,716 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 10:55:43,720 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 10:55:43,720 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 10:55:43,720 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 10:55:43,722 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 10:55:43,723 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 10:55:43,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 10:55:43,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 10:55:43,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 10:55:43,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 10:55:43,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 10:55:43,728 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 10:55:43,729 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 10:55:43,729 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 10:55:43,729 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 10:55:43,730 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 10:55:43,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 10:55:43,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 10:55:43,733 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_acc5cbb6-354a-4fb1-b92f-474e6f07f042/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-20 10:55:43,760 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 10:55:43,772 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 10:55:43,773 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 10:55:43,774 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 10:55:43,774 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 10:55:43,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 10:55:43,774 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 10:55:43,775 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 10:55:43,775 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 10:55:43,775 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 10:55:43,775 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 10:55:43,776 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-20 10:55:43,776 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-20 10:55:43,776 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-20 10:55:43,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 10:55:43,777 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 10:55:43,777 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 10:55:43,777 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 10:55:43,777 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 10:55:43,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 10:55:43,778 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 10:55:43,778 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 10:55:43,778 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 10:55:43,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 10:55:43,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 10:55:43,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 10:55:43,779 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 10:55:43,779 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 10:55:43,780 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 10:55:43,781 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_acc5cbb6-354a-4fb1-b92f-474e6f07f042/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 -> cef7b9fedda26f2b86e76703e63f684bda898c92 [2019-11-20 10:55:43,983 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 10:55:44,002 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 10:55:44,005 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 10:55:44,007 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 10:55:44,008 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 10:55:44,009 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_acc5cbb6-354a-4fb1-b92f-474e6f07f042/bin/uautomizer/../../sv-benchmarks/c/ldv-memsafety/memsetNonZero_-write.c [2019-11-20 10:55:44,080 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_acc5cbb6-354a-4fb1-b92f-474e6f07f042/bin/uautomizer/data/2f7266df6/db3e8a14f8fa49b0b20b6c9fbd616f35/FLAG096fdc002 [2019-11-20 10:55:44,577 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 10:55:44,577 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_acc5cbb6-354a-4fb1-b92f-474e6f07f042/sv-benchmarks/c/ldv-memsafety/memsetNonZero_-write.c [2019-11-20 10:55:44,583 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_acc5cbb6-354a-4fb1-b92f-474e6f07f042/bin/uautomizer/data/2f7266df6/db3e8a14f8fa49b0b20b6c9fbd616f35/FLAG096fdc002 [2019-11-20 10:55:45,009 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_acc5cbb6-354a-4fb1-b92f-474e6f07f042/bin/uautomizer/data/2f7266df6/db3e8a14f8fa49b0b20b6c9fbd616f35 [2019-11-20 10:55:45,012 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 10:55:45,014 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-20 10:55:45,018 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 10:55:45,018 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 10:55:45,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 10:55:45,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:55:45" (1/1) ... [2019-11-20 10:55:45,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f556bfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:45, skipping insertion in model container [2019-11-20 10:55:45,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:55:45" (1/1) ... [2019-11-20 10:55:45,040 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 10:55:45,061 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 10:55:45,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 10:55:45,327 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 10:55:45,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 10:55:45,361 INFO L192 MainTranslator]: Completed translation [2019-11-20 10:55:45,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:45 WrapperNode [2019-11-20 10:55:45,362 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 10:55:45,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 10:55:45,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 10:55:45,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 10:55:45,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:45" (1/1) ... [2019-11-20 10:55:45,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:45" (1/1) ... [2019-11-20 10:55:45,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:45" (1/1) ... [2019-11-20 10:55:45,386 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:45" (1/1) ... [2019-11-20 10:55:45,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:45" (1/1) ... [2019-11-20 10:55:45,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:45" (1/1) ... [2019-11-20 10:55:45,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:45" (1/1) ... [2019-11-20 10:55:45,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 10:55:45,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 10:55:45,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 10:55:45,401 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 10:55:45,402 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_acc5cbb6-354a-4fb1-b92f-474e6f07f042/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 10:55:45,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-20 10:55:45,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 10:55:45,481 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-20 10:55:45,482 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-11-20 10:55:45,482 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-11-20 10:55:45,482 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-20 10:55:45,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 10:55:45,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-11-20 10:55:45,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 10:55:45,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-20 10:55:45,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 10:55:45,620 WARN L736 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-20 10:55:45,691 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 10:55:45,692 INFO L285 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-20 10:55:45,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:55:45 BoogieIcfgContainer [2019-11-20 10:55:45,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 10:55:45,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 10:55:45,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 10:55:45,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 10:55:45,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:55:45" (1/3) ... [2019-11-20 10:55:45,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e2c05cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:55:45, skipping insertion in model container [2019-11-20 10:55:45,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:45" (2/3) ... [2019-11-20 10:55:45,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e2c05cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:55:45, skipping insertion in model container [2019-11-20 10:55:45,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:55:45" (3/3) ... [2019-11-20 10:55:45,701 INFO L109 eAbstractionObserver]: Analyzing ICFG memsetNonZero_-write.c [2019-11-20 10:55:45,711 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 10:55:45,734 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-20 10:55:45,745 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-20 10:55:45,803 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 10:55:45,804 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-20 10:55:45,804 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 10:55:45,804 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 10:55:45,804 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 10:55:45,805 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 10:55:45,805 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 10:55:45,805 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 10:55:45,819 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-11-20 10:55:45,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-20 10:55:45,840 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:55:45,841 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:55:45,841 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-20 10:55:45,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:55:45,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1092847368, now seen corresponding path program 1 times [2019-11-20 10:55:45,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 10:55:45,890 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1950275835] [2019-11-20 10:55:45,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_acc5cbb6-354a-4fb1-b92f-474e6f07f042/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 10:55:46,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:55:46,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 10:55:46,010 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:55:46,079 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 10:55:46,080 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 10:55:46,088 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:55:46,088 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 10:55:46,088 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 10:55:46,100 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 10:55:46,100 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 10:55:46,124 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 10:55:46,125 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1950275835] [2019-11-20 10:55:46,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:55:46,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 10:55:46,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127671671] [2019-11-20 10:55:46,132 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 10:55:46,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 10:55:46,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 10:55:46,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 10:55:46,150 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2019-11-20 10:55:46,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:55:46,200 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2019-11-20 10:55:46,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 10:55:46,203 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-20 10:55:46,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:55:46,212 INFO L225 Difference]: With dead ends: 19 [2019-11-20 10:55:46,212 INFO L226 Difference]: Without dead ends: 16 [2019-11-20 10:55:46,214 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 10:55:46,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-20 10:55:46,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-20 10:55:46,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-20 10:55:46,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-11-20 10:55:46,253 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2019-11-20 10:55:46,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:55:46,254 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-11-20 10:55:46,254 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 10:55:46,254 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-11-20 10:55:46,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-20 10:55:46,255 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:55:46,255 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:55:46,457 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:55:46,457 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-20 10:55:46,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:55:46,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1092847367, now seen corresponding path program 1 times [2019-11-20 10:55:46,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 10:55:46,459 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1375208201] [2019-11-20 10:55:46,459 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_acc5cbb6-354a-4fb1-b92f-474e6f07f042/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 10:55:46,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:55:46,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:55:46,562 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-20 10:55:46,562 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 10:55:46,763 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:55:46,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:55:46 BoogieIcfgContainer [2019-11-20 10:55:46,785 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 10:55:46,786 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 10:55:46,786 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 10:55:46,786 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 10:55:46,788 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:55:45" (3/4) ... [2019-11-20 10:55:46,791 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 10:55:46,835 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_acc5cbb6-354a-4fb1-b92f-474e6f07f042/bin/uautomizer/witness.graphml [2019-11-20 10:55:46,835 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 10:55:46,837 INFO L168 Benchmark]: Toolchain (without parser) took 1823.32 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.7 MB). Free memory was 946.1 MB in the beginning and 1.0 GB in the end (delta: -83.0 MB). Peak memory consumption was 17.6 MB. Max. memory is 11.5 GB. [2019-11-20 10:55:46,838 INFO L168 Benchmark]: CDTParser took 0.81 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:55:46,839 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.32 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.7 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -145.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-20 10:55:46,839 INFO L168 Benchmark]: Boogie Preprocessor took 37.44 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-11-20 10:55:46,840 INFO L168 Benchmark]: RCFGBuilder took 292.75 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: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. [2019-11-20 10:55:46,841 INFO L168 Benchmark]: TraceAbstraction took 1091.50 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: 38.5 MB). Peak memory consumption was 38.5 MB. Max. memory is 11.5 GB. [2019-11-20 10:55:46,841 INFO L168 Benchmark]: Witness Printer took 49.60 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:55:46,845 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.81 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 344.32 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.7 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -145.4 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.44 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 292.75 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: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1091.50 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: 38.5 MB). Peak memory consumption was 38.5 MB. Max. memory is 11.5 GB. * Witness Printer took 49.60 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 27]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L26] struct ppp_comp_stats cstats ; VAL [cstats={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 3 error locations. Result: UNSAFE, OverallTime: 0.9s, 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...