./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memsetNonZero2_-write.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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 0.1.24-30f4e4a [2019-11-28 02:40:44,697 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:40:44,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:40:44,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:40:44,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:40:44,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:40:44,724 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:40:44,734 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:40:44,739 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:40:44,743 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:40:44,745 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:40:44,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:40:44,747 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:40:44,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:40:44,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:40:44,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:40:44,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:40:44,755 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:40:44,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:40:44,762 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:40:44,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:40:44,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:40:44,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:40:44,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:40:44,777 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:40:44,778 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:40:44,778 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:40:44,780 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:40:44,780 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:40:44,781 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:40:44,782 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:40:44,783 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:40:44,783 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:40:44,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:40:44,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:40:44,786 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:40:44,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:40:44,788 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:40:44,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:40:44,789 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:40:44,790 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:40:44,791 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-28 02:40:44,813 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:40:44,813 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:40:44,815 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:40:44,815 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:40:44,815 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:40:44,816 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:40:44,818 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 02:40:44,818 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:40:44,818 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:40:44,819 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 02:40:44,819 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:40:44,819 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-28 02:40:44,819 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-28 02:40:44,820 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-28 02:40:44,821 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 02:40:44,821 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-28 02:40:44,821 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 02:40:44,823 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:40:44,823 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:40:44,823 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:40:44,823 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 02:40:44,824 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 02:40:44,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:40:44,824 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:40:44,824 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 02:40:44,825 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 02:40:44,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 02:40:44,825 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 [2019-11-28 02:40:45,136 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:40:45,152 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:40:45,158 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:40:45,160 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:40:45,162 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:40:45,163 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memsetNonZero2_-write.c [2019-11-28 02:40:45,236 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/865fca286/3c95655dab4b4935a71bbe2a490abb8d/FLAGe15493198 [2019-11-28 02:40:45,727 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:40:45,728 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memsetNonZero2_-write.c [2019-11-28 02:40:45,735 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/865fca286/3c95655dab4b4935a71bbe2a490abb8d/FLAGe15493198 [2019-11-28 02:40:46,092 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/865fca286/3c95655dab4b4935a71bbe2a490abb8d [2019-11-28 02:40:46,095 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:40:46,096 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-28 02:40:46,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:40:46,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:40:46,101 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:40:46,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:40:46" (1/1) ... [2019-11-28 02:40:46,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36cbbb69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:46, skipping insertion in model container [2019-11-28 02:40:46,106 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:40:46" (1/1) ... [2019-11-28 02:40:46,114 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:40:46,139 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:40:46,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:40:46,396 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:40:46,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:40:46,437 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:40:46,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:46 WrapperNode [2019-11-28 02:40:46,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:40:46,439 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:40:46,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:40:46,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:40:46,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:46" (1/1) ... [2019-11-28 02:40:46,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:46" (1/1) ... [2019-11-28 02:40:46,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:46" (1/1) ... [2019-11-28 02:40:46,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:46" (1/1) ... [2019-11-28 02:40:46,571 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:46" (1/1) ... [2019-11-28 02:40:46,577 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:46" (1/1) ... [2019-11-28 02:40:46,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:46" (1/1) ... [2019-11-28 02:40:46,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:40:46,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:40:46,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:40:46,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:40:46,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:46" (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 [2019-11-28 02:40:46,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-28 02:40:46,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:40:46,667 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-28 02:40:46,667 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-11-28 02:40:46,668 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-11-28 02:40:46,668 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-28 02:40:46,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 02:40:46,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-11-28 02:40:46,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 02:40:46,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-28 02:40:46,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:40:46,819 WARN L759 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-28 02:40:46,890 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:40:46,890 INFO L297 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-28 02:40:46,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:40:46 BoogieIcfgContainer [2019-11-28 02:40:46,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:40:46,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 02:40:46,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 02:40:46,905 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 02:40:46,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:40:46" (1/3) ... [2019-11-28 02:40:46,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a0c229d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:40:46, skipping insertion in model container [2019-11-28 02:40:46,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:46" (2/3) ... [2019-11-28 02:40:46,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a0c229d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:40:46, skipping insertion in model container [2019-11-28 02:40:46,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:40:46" (3/3) ... [2019-11-28 02:40:46,917 INFO L109 eAbstractionObserver]: Analyzing ICFG memsetNonZero2_-write.c [2019-11-28 02:40:46,945 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 02:40:46,963 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-28 02:40:46,992 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-28 02:40:47,016 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 02:40:47,017 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-28 02:40:47,017 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 02:40:47,017 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:40:47,018 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:40:47,018 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 02:40:47,018 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:40:47,018 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 02:40:47,033 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-11-28 02:40:47,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 02:40:47,044 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:40:47,045 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:40:47,046 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:40:47,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:40:47,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1092847368, now seen corresponding path program 1 times [2019-11-28 02:40:47,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:40:47,064 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765563960] [2019-11-28 02:40:47,064 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:40:47,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:40:47,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:40:47,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:40:47,367 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765563960] [2019-11-28 02:40:47,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:40:47,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 02:40:47,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597505673] [2019-11-28 02:40:47,378 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 02:40:47,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:40:47,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 02:40:47,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:40:47,400 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 4 states. [2019-11-28 02:40:47,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:40:47,486 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2019-11-28 02:40:47,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 02:40:47,489 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-28 02:40:47,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:40:47,499 INFO L225 Difference]: With dead ends: 19 [2019-11-28 02:40:47,499 INFO L226 Difference]: Without dead ends: 16 [2019-11-28 02:40:47,500 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:40:47,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-28 02:40:47,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-28 02:40:47,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-28 02:40:47,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-11-28 02:40:47,531 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2019-11-28 02:40:47,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:40:47,532 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-11-28 02:40:47,532 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 02:40:47,532 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-11-28 02:40:47,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 02:40:47,533 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:40:47,533 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:40:47,533 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-28 02:40:47,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:40:47,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1092847367, now seen corresponding path program 1 times [2019-11-28 02:40:47,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:40:47,535 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68328183] [2019-11-28 02:40:47,535 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:40:47,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:40:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:40:47,586 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:40:47,586 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 02:40:47,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:40:47 BoogieIcfgContainer [2019-11-28 02:40:47,609 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 02:40:47,609 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:40:47,609 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:40:47,610 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:40:47,610 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:40:46" (3/4) ... [2019-11-28 02:40:47,613 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 02:40:47,650 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 02:40:47,650 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:40:47,653 INFO L168 Benchmark]: Toolchain (without parser) took 1555.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.3 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -143.1 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2019-11-28 02:40:47,654 INFO L168 Benchmark]: CDTParser took 1.57 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:40:47,655 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.92 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:40:47,656 INFO L168 Benchmark]: Boogie Preprocessor took 153.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.3 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -205.4 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:40:47,657 INFO L168 Benchmark]: RCFGBuilder took 299.85 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: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2019-11-28 02:40:47,658 INFO L168 Benchmark]: TraceAbstraction took 715.61 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: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. [2019-11-28 02:40:47,659 INFO L168 Benchmark]: Witness Printer took 41.09 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. [2019-11-28 02:40:47,663 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.57 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 340.92 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 153.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.3 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -205.4 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 299.85 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: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 715.61 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: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. * Witness Printer took 41.09 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={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 3 error locations. Result: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 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, 0.0s 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, 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...