./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memsetNonZero2_-write.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memsetNonZero2_-write.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 7785be5078a920429dc2d1af3a353f3d5cac6d6f ............................................................................................................................................................................................................................................................................................................ 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 0.1.25-8bd4bc6 [2020-07-29 01:07:13,585 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-29 01:07:13,587 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-29 01:07:13,603 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-29 01:07:13,605 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-29 01:07:13,607 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-29 01:07:13,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-29 01:07:13,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-29 01:07:13,622 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-29 01:07:13,625 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-29 01:07:13,627 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-29 01:07:13,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-29 01:07:13,629 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-29 01:07:13,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-29 01:07:13,634 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-29 01:07:13,635 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-29 01:07:13,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-29 01:07:13,641 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-29 01:07:13,643 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-29 01:07:13,648 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-29 01:07:13,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-29 01:07:13,654 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-29 01:07:13,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-29 01:07:13,659 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-29 01:07:13,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-29 01:07:13,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-29 01:07:13,662 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-29 01:07:13,665 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-29 01:07:13,666 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-29 01:07:13,667 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-29 01:07:13,667 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-29 01:07:13,668 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-29 01:07:13,670 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-29 01:07:13,671 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-29 01:07:13,672 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-29 01:07:13,674 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-29 01:07:13,675 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-29 01:07:13,675 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-29 01:07:13,675 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-29 01:07:13,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-29 01:07:13,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-29 01:07:13,679 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-07-29 01:07:13,714 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-29 01:07:13,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-29 01:07:13,717 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-29 01:07:13,717 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-29 01:07:13,718 INFO L138 SettingsManager]: * Use SBE=true [2020-07-29 01:07:13,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-29 01:07:13,718 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-29 01:07:13,719 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-07-29 01:07:13,719 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-29 01:07:13,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-29 01:07:13,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-29 01:07:13,721 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-07-29 01:07:13,721 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-07-29 01:07:13,721 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-07-29 01:07:13,722 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-29 01:07:13,722 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-07-29 01:07:13,722 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-29 01:07:13,722 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-29 01:07:13,723 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-29 01:07:13,723 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-29 01:07:13,723 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-29 01:07:13,724 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-29 01:07:13,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-29 01:07:13,724 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-29 01:07:13,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-29 01:07:13,725 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-29 01:07:13,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-29 01:07:13,726 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-29 01:07:13,726 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> 7785be5078a920429dc2d1af3a353f3d5cac6d6f [2020-07-29 01:07:14,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-29 01:07:14,074 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-29 01:07:14,078 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-29 01:07:14,080 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-29 01:07:14,080 INFO L275 PluginConnector]: CDTParser initialized [2020-07-29 01:07:14,081 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memsetNonZero2_-write.c [2020-07-29 01:07:14,158 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e5ece294/b670850cd7f84a689bdc760b386285a2/FLAGd722d31c9 [2020-07-29 01:07:14,665 INFO L306 CDTParser]: Found 1 translation units. [2020-07-29 01:07:14,666 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memsetNonZero2_-write.c [2020-07-29 01:07:14,672 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e5ece294/b670850cd7f84a689bdc760b386285a2/FLAGd722d31c9 [2020-07-29 01:07:15,036 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e5ece294/b670850cd7f84a689bdc760b386285a2 [2020-07-29 01:07:15,039 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-29 01:07:15,043 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-07-29 01:07:15,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-29 01:07:15,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-29 01:07:15,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-29 01:07:15,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:07:15" (1/1) ... [2020-07-29 01:07:15,053 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a149483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:07:15, skipping insertion in model container [2020-07-29 01:07:15,054 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.07 01:07:15" (1/1) ... [2020-07-29 01:07:15,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-29 01:07:15,083 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-29 01:07:15,264 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:07:15,275 INFO L203 MainTranslator]: Completed pre-run [2020-07-29 01:07:15,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-29 01:07:15,307 INFO L208 MainTranslator]: Completed translation [2020-07-29 01:07:15,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:07:15 WrapperNode [2020-07-29 01:07:15,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-29 01:07:15,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-29 01:07:15,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-29 01:07:15,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-29 01:07:15,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:07:15" (1/1) ... [2020-07-29 01:07:15,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:07:15" (1/1) ... [2020-07-29 01:07:15,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:07:15" (1/1) ... [2020-07-29 01:07:15,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:07:15" (1/1) ... [2020-07-29 01:07:15,389 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:07:15" (1/1) ... [2020-07-29 01:07:15,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:07:15" (1/1) ... [2020-07-29 01:07:15,394 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:07:15" (1/1) ... [2020-07-29 01:07:15,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-29 01:07:15,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-29 01:07:15,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-29 01:07:15,397 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-29 01:07:15,398 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:07:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-07-29 01:07:15,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-29 01:07:15,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-29 01:07:15,456 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-29 01:07:15,456 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-07-29 01:07:15,457 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-07-29 01:07:15,457 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-29 01:07:15,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-29 01:07:15,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-07-29 01:07:15,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-29 01:07:15,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-29 01:07:15,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-29 01:07:15,592 WARN L775 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-07-29 01:07:15,749 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-29 01:07:15,749 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-29 01:07:15,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:07:15 BoogieIcfgContainer [2020-07-29 01:07:15,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-29 01:07:15,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-29 01:07:15,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-29 01:07:15,760 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-29 01:07:15,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.07 01:07:15" (1/3) ... [2020-07-29 01:07:15,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70d48369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.07 01:07:15, skipping insertion in model container [2020-07-29 01:07:15,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.07 01:07:15" (2/3) ... [2020-07-29 01:07:15,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70d48369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.07 01:07:15, skipping insertion in model container [2020-07-29 01:07:15,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:07:15" (3/3) ... [2020-07-29 01:07:15,763 INFO L109 eAbstractionObserver]: Analyzing ICFG memsetNonZero2_-write.c [2020-07-29 01:07:15,773 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-29 01:07:15,780 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-07-29 01:07:15,791 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-07-29 01:07:15,811 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-29 01:07:15,811 INFO L376 AbstractCegarLoop]: Hoare is false [2020-07-29 01:07:15,811 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-29 01:07:15,812 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-29 01:07:15,812 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-29 01:07:15,812 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-29 01:07:15,812 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-29 01:07:15,812 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-29 01:07:15,826 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-07-29 01:07:15,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-07-29 01:07:15,835 INFO L414 BasicCegarLoop]: Found error trace [2020-07-29 01:07:15,835 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-07-29 01:07:15,836 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-07-29 01:07:15,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:07:15,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1092847368, now seen corresponding path program 1 times [2020-07-29 01:07:15,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:07:15,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396384951] [2020-07-29 01:07:15,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:07:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:07:16,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-07-29 01:07:16,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-29 01:07:16,148 INFO L280 TraceCheckUtils]: 0: Hoare triple {29#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {23#true} is VALID [2020-07-29 01:07:16,149 INFO L280 TraceCheckUtils]: 1: Hoare triple {23#true} assume true; {23#true} is VALID [2020-07-29 01:07:16,149 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {23#true} {23#true} #22#return; {23#true} is VALID [2020-07-29 01:07:16,154 INFO L263 TraceCheckUtils]: 0: Hoare triple {23#true} call ULTIMATE.init(); {29#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-29 01:07:16,154 INFO L280 TraceCheckUtils]: 1: Hoare triple {29#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {23#true} is VALID [2020-07-29 01:07:16,155 INFO L280 TraceCheckUtils]: 2: Hoare triple {23#true} assume true; {23#true} is VALID [2020-07-29 01:07:16,157 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {23#true} {23#true} #22#return; {23#true} is VALID [2020-07-29 01:07:16,158 INFO L263 TraceCheckUtils]: 4: Hoare triple {23#true} call #t~ret4 := main(); {23#true} is VALID [2020-07-29 01:07:16,161 INFO L280 TraceCheckUtils]: 5: Hoare triple {23#true} call ~#cstats~0.base, ~#cstats~0.offset := #Ultimate.allocOnStack(40); {28#(= 1 (select |#valid| |main_~#cstats~0.base|))} is VALID [2020-07-29 01:07:16,162 INFO L280 TraceCheckUtils]: 6: Hoare triple {28#(= 1 (select |#valid| |main_~#cstats~0.base|))} assume !(1 == #valid[~#cstats~0.base]); {24#false} is VALID [2020-07-29 01:07:16,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-29 01:07:16,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396384951] [2020-07-29 01:07:16,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-29 01:07:16,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-29 01:07:16,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826149100] [2020-07-29 01:07:16,175 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-07-29 01:07:16,179 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-29 01:07:16,183 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-29 01:07:16,208 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 7 edges. 7 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:07:16,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-29 01:07:16,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-29 01:07:16,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-29 01:07:16,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-29 01:07:16,220 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 4 states. [2020-07-29 01:07:16,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:07:16,372 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-07-29 01:07:16,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-29 01:07:16,373 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-07-29 01:07:16,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-29 01:07:16,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-29 01:07:16,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2020-07-29 01:07:16,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-29 01:07:16,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2020-07-29 01:07:16,391 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 20 transitions. [2020-07-29 01:07:16,432 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-29 01:07:16,443 INFO L225 Difference]: With dead ends: 19 [2020-07-29 01:07:16,443 INFO L226 Difference]: Without dead ends: 16 [2020-07-29 01:07:16,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-29 01:07:16,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-07-29 01:07:16,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-07-29 01:07:16,474 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-29 01:07:16,474 INFO L82 GeneralOperation]: Start isEquivalent. First operand 16 states. Second operand 16 states. [2020-07-29 01:07:16,475 INFO L74 IsIncluded]: Start isIncluded. First operand 16 states. Second operand 16 states. [2020-07-29 01:07:16,475 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 16 states. [2020-07-29 01:07:16,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:07:16,478 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-07-29 01:07:16,479 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-07-29 01:07:16,479 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:07:16,479 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:07:16,480 INFO L74 IsIncluded]: Start isIncluded. First operand 16 states. Second operand 16 states. [2020-07-29 01:07:16,480 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 16 states. [2020-07-29 01:07:16,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-29 01:07:16,483 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-07-29 01:07:16,483 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-07-29 01:07:16,484 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-29 01:07:16,484 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-29 01:07:16,484 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-29 01:07:16,485 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-29 01:07:16,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-29 01:07:16,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-07-29 01:07:16,488 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2020-07-29 01:07:16,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-29 01:07:16,489 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-07-29 01:07:16,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-29 01:07:16,489 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-07-29 01:07:16,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-07-29 01:07:16,490 INFO L414 BasicCegarLoop]: Found error trace [2020-07-29 01:07:16,490 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-07-29 01:07:16,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-29 01:07:16,490 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-07-29 01:07:16,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-29 01:07:16,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1092847367, now seen corresponding path program 1 times [2020-07-29 01:07:16,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-29 01:07:16,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865847516] [2020-07-29 01:07:16,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-29 01:07:16,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:07:16,512 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:07:16,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-29 01:07:16,524 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-29 01:07:16,543 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-29 01:07:16,543 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-29 01:07:16,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-29 01:07:16,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.07 01:07:16 BoogieIcfgContainer [2020-07-29 01:07:16,564 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-29 01:07:16,564 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-29 01:07:16,565 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-29 01:07:16,565 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-29 01:07:16,566 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.07 01:07:15" (3/4) ... [2020-07-29 01:07:16,568 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-07-29 01:07:16,605 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-29 01:07:16,605 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-29 01:07:16,608 INFO L168 Benchmark]: Toolchain (without parser) took 1566.26 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 87.0 MB). Free memory was 954.9 MB in the beginning and 1.0 GB in the end (delta: -46.8 MB). Peak memory consumption was 40.2 MB. Max. memory is 11.5 GB. [2020-07-29 01:07:16,609 INFO L168 Benchmark]: CDTParser took 0.66 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-29 01:07:16,610 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.05 ms. Allocated memory is still 1.0 GB. Free memory was 954.9 MB in the beginning and 944.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-29 01:07:16,611 INFO L168 Benchmark]: Boogie Preprocessor took 88.05 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 87.0 MB). Free memory was 944.1 MB in the beginning and 1.1 GB in the end (delta: -139.0 MB). Peak memory consumption was 9.5 MB. Max. memory is 11.5 GB. [2020-07-29 01:07:16,612 INFO L168 Benchmark]: RCFGBuilder took 356.48 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: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2020-07-29 01:07:16,612 INFO L168 Benchmark]: TraceAbstraction took 807.86 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: 54.7 MB). Peak memory consumption was 54.7 MB. Max. memory is 11.5 GB. [2020-07-29 01:07:16,613 INFO L168 Benchmark]: Witness Printer took 40.44 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. [2020-07-29 01:07:16,617 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.66 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 264.05 ms. Allocated memory is still 1.0 GB. Free memory was 954.9 MB in the beginning and 944.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 88.05 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 87.0 MB). Free memory was 944.1 MB in the beginning and 1.1 GB in the end (delta: -139.0 MB). Peak memory consumption was 9.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 356.48 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: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 807.86 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: 54.7 MB). Peak memory consumption was 54.7 MB. Max. memory is 11.5 GB. * Witness Printer took 40.44 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: 22]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L21] struct compstat cstats ; VAL [cstats={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 6 SDslu, 8 SDs, 0 SdLazy, 24 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s 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, 0.2s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 114 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...