./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/derefAfterFree1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a5d99bc3-9332-41df-bbe1-b1b7e438ed3e/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a5d99bc3-9332-41df-bbe1-b1b7e438ed3e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a5d99bc3-9332-41df-bbe1-b1b7e438ed3e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a5d99bc3-9332-41df-bbe1-b1b7e438ed3e/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/derefAfterFree1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a5d99bc3-9332-41df-bbe1-b1b7e438ed3e/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a5d99bc3-9332-41df-bbe1-b1b7e438ed3e/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 d452f938d74713dbff7e0330f8ef393409d67ffe ............................................................................................................................................................................................................................................................................................................................................................ 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-cad4683 [2019-11-15 23:52:10,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:52:10,896 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:52:10,911 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:52:10,912 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:52:10,913 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:52:10,915 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:52:10,924 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:52:10,929 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:52:10,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:52:10,935 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:52:10,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:52:10,937 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:52:10,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:52:10,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:52:10,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:52:10,942 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:52:10,942 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:52:10,945 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:52:10,948 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:52:10,952 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:52:10,954 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:52:10,956 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:52:10,958 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:52:10,961 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:52:10,961 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:52:10,962 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:52:10,963 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:52:10,964 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:52:10,964 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:52:10,965 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:52:10,965 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:52:10,966 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:52:10,967 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:52:10,968 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:52:10,969 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:52:10,969 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:52:10,970 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:52:10,970 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:52:10,971 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:52:10,971 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:52:10,973 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a5d99bc3-9332-41df-bbe1-b1b7e438ed3e/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-15 23:52:10,997 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:52:11,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:52:11,009 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:52:11,009 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:52:11,009 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:52:11,010 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:52:11,010 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:52:11,010 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 23:52:11,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 23:52:11,011 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:52:11,011 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:52:11,011 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-15 23:52:11,011 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-15 23:52:11,012 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-15 23:52:11,012 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:52:11,012 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:52:11,012 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:52:11,013 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:52:11,013 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:52:11,014 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:52:11,014 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:52:11,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:52:11,015 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:52:11,015 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:52:11,015 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 23:52:11,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 23:52:11,016 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a5d99bc3-9332-41df-bbe1-b1b7e438ed3e/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 -> d452f938d74713dbff7e0330f8ef393409d67ffe [2019-11-15 23:52:11,052 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:52:11,061 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:52:11,064 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:52:11,066 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:52:11,066 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:52:11,076 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a5d99bc3-9332-41df-bbe1-b1b7e438ed3e/bin/uautomizer/../../sv-benchmarks/c/memsafety-ext3/derefAfterFree1.c [2019-11-15 23:52:11,131 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a5d99bc3-9332-41df-bbe1-b1b7e438ed3e/bin/uautomizer/data/7cb262c3b/5eb12c58e338492a9989bc8e345c7e04/FLAG48bcc9ab2 [2019-11-15 23:52:11,455 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:52:11,456 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a5d99bc3-9332-41df-bbe1-b1b7e438ed3e/sv-benchmarks/c/memsafety-ext3/derefAfterFree1.c [2019-11-15 23:52:11,461 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a5d99bc3-9332-41df-bbe1-b1b7e438ed3e/bin/uautomizer/data/7cb262c3b/5eb12c58e338492a9989bc8e345c7e04/FLAG48bcc9ab2 [2019-11-15 23:52:11,848 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a5d99bc3-9332-41df-bbe1-b1b7e438ed3e/bin/uautomizer/data/7cb262c3b/5eb12c58e338492a9989bc8e345c7e04 [2019-11-15 23:52:11,851 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:52:11,852 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-15 23:52:11,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:52:11,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:52:11,861 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:52:11,862 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:52:11" (1/1) ... [2019-11-15 23:52:11,865 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10497a6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:52:11, skipping insertion in model container [2019-11-15 23:52:11,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:52:11" (1/1) ... [2019-11-15 23:52:11,873 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:52:11,890 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:52:12,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:52:12,183 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:52:12,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:52:12,222 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:52:12,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:52:12 WrapperNode [2019-11-15 23:52:12,223 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:52:12,224 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:52:12,224 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:52:12,224 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:52:12,237 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:52:12" (1/1) ... [2019-11-15 23:52:12,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:52:12" (1/1) ... [2019-11-15 23:52:12,247 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:52:12" (1/1) ... [2019-11-15 23:52:12,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:52:12" (1/1) ... [2019-11-15 23:52:12,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:52:12" (1/1) ... [2019-11-15 23:52:12,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:52:12" (1/1) ... [2019-11-15 23:52:12,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:52:12" (1/1) ... [2019-11-15 23:52:12,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:52:12,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:52:12,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:52:12,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:52:12,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:52:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a5d99bc3-9332-41df-bbe1-b1b7e438ed3e/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 [2019-11-15 23:52:12,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-15 23:52:12,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:52:12,322 INFO L138 BoogieDeclarations]: Found implementation of procedure freePointer [2019-11-15 23:52:12,322 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-15 23:52:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-15 23:52:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-15 23:52:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure freePointer [2019-11-15 23:52:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 23:52:12,325 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-15 23:52:12,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-15 23:52:12,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 23:52:12,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-15 23:52:12,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:52:12,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 23:52:12,547 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:52:12,547 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-15 23:52:12,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:52:12 BoogieIcfgContainer [2019-11-15 23:52:12,548 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:52:12,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:52:12,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:52:12,551 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:52:12,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:52:11" (1/3) ... [2019-11-15 23:52:12,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@678f813a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:52:12, skipping insertion in model container [2019-11-15 23:52:12,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:52:12" (2/3) ... [2019-11-15 23:52:12,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@678f813a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:52:12, skipping insertion in model container [2019-11-15 23:52:12,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:52:12" (3/3) ... [2019-11-15 23:52:12,556 INFO L109 eAbstractionObserver]: Analyzing ICFG derefAfterFree1.c [2019-11-15 23:52:12,565 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:52:12,587 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-15 23:52:12,598 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-15 23:52:12,620 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:52:12,622 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-15 23:52:12,623 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:52:12,623 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:52:12,623 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:52:12,623 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:52:12,623 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:52:12,623 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:52:12,642 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-11-15 23:52:12,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-15 23:52:12,650 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:52:12,651 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:52:12,653 INFO L410 AbstractCegarLoop]: === Iteration 1 === [freePointerErr0ASSERT_VIOLATIONMEMORY_FREE, freePointerErr2ASSERT_VIOLATIONMEMORY_FREE, freePointerErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-15 23:52:12,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:52:12,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1608321379, now seen corresponding path program 1 times [2019-11-15 23:52:12,662 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:52:12,662 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615768451] [2019-11-15 23:52:12,663 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:52:12,663 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:52:12,663 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:52:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:52:12,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:52:12,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:52:12,864 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615768451] [2019-11-15 23:52:12,865 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:52:12,865 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 23:52:12,865 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971050054] [2019-11-15 23:52:12,869 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 23:52:12,870 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:52:12,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 23:52:12,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-15 23:52:12,881 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 6 states. [2019-11-15 23:52:13,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:52:13,049 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2019-11-15 23:52:13,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-15 23:52:13,051 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2019-11-15 23:52:13,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:52:13,058 INFO L225 Difference]: With dead ends: 24 [2019-11-15 23:52:13,059 INFO L226 Difference]: Without dead ends: 21 [2019-11-15 23:52:13,060 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2019-11-15 23:52:13,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-15 23:52:13,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-11-15 23:52:13,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-15 23:52:13,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2019-11-15 23:52:13,093 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 9 [2019-11-15 23:52:13,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:52:13,093 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2019-11-15 23:52:13,093 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 23:52:13,094 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2019-11-15 23:52:13,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-15 23:52:13,094 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:52:13,094 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:52:13,095 INFO L410 AbstractCegarLoop]: === Iteration 2 === [freePointerErr0ASSERT_VIOLATIONMEMORY_FREE, freePointerErr2ASSERT_VIOLATIONMEMORY_FREE, freePointerErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-15 23:52:13,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:52:13,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1681644769, now seen corresponding path program 1 times [2019-11-15 23:52:13,095 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:52:13,096 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727639632] [2019-11-15 23:52:13,096 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:52:13,096 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:52:13,096 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:52:13,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:52:13,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:52:13,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:52:13,211 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727639632] [2019-11-15 23:52:13,211 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:52:13,211 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 23:52:13,211 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607238377] [2019-11-15 23:52:13,212 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 23:52:13,213 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:52:13,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 23:52:13,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-15 23:52:13,218 INFO L87 Difference]: Start difference. First operand 21 states and 20 transitions. Second operand 6 states. [2019-11-15 23:52:13,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:52:13,343 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2019-11-15 23:52:13,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 23:52:13,345 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-11-15 23:52:13,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:52:13,345 INFO L225 Difference]: With dead ends: 20 [2019-11-15 23:52:13,345 INFO L226 Difference]: Without dead ends: 20 [2019-11-15 23:52:13,346 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-11-15 23:52:13,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-15 23:52:13,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-15 23:52:13,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-15 23:52:13,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2019-11-15 23:52:13,350 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 10 [2019-11-15 23:52:13,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:52:13,350 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2019-11-15 23:52:13,350 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 23:52:13,350 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2019-11-15 23:52:13,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-15 23:52:13,351 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:52:13,351 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:52:13,351 INFO L410 AbstractCegarLoop]: === Iteration 3 === [freePointerErr0ASSERT_VIOLATIONMEMORY_FREE, freePointerErr2ASSERT_VIOLATIONMEMORY_FREE, freePointerErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-15 23:52:13,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:52:13,351 INFO L82 PathProgramCache]: Analyzing trace with hash -591380251, now seen corresponding path program 1 times [2019-11-15 23:52:13,352 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:52:13,352 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377469240] [2019-11-15 23:52:13,352 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:52:13,352 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:52:13,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:52:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:52:13,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:52:13,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:52:13,451 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377469240] [2019-11-15 23:52:13,451 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:52:13,451 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 23:52:13,451 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269727512] [2019-11-15 23:52:13,452 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 23:52:13,452 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:52:13,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 23:52:13,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-15 23:52:13,453 INFO L87 Difference]: Start difference. First operand 20 states and 19 transitions. Second operand 6 states. [2019-11-15 23:52:13,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:52:13,533 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2019-11-15 23:52:13,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 23:52:13,534 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-15 23:52:13,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:52:13,534 INFO L225 Difference]: With dead ends: 19 [2019-11-15 23:52:13,535 INFO L226 Difference]: Without dead ends: 19 [2019-11-15 23:52:13,535 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-15 23:52:13,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-15 23:52:13,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-11-15 23:52:13,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-15 23:52:13,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2019-11-15 23:52:13,538 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 11 [2019-11-15 23:52:13,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:52:13,539 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2019-11-15 23:52:13,539 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 23:52:13,539 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2019-11-15 23:52:13,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-15 23:52:13,540 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:52:13,540 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:52:13,540 INFO L410 AbstractCegarLoop]: === Iteration 4 === [freePointerErr0ASSERT_VIOLATIONMEMORY_FREE, freePointerErr2ASSERT_VIOLATIONMEMORY_FREE, freePointerErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2019-11-15 23:52:13,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:52:13,540 INFO L82 PathProgramCache]: Analyzing trace with hash 146827991, now seen corresponding path program 1 times [2019-11-15 23:52:13,541 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:52:13,541 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892153963] [2019-11-15 23:52:13,541 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:52:13,541 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:52:13,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:52:13,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:52:13,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:52:13,602 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:52:13,602 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 23:52:13,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 11:52:13 BoogieIcfgContainer [2019-11-15 23:52:13,632 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 23:52:13,633 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:52:13,633 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:52:13,633 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:52:13,634 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:52:12" (3/4) ... [2019-11-15 23:52:13,636 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-15 23:52:13,683 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a5d99bc3-9332-41df-bbe1-b1b7e438ed3e/bin/uautomizer/witness.graphml [2019-11-15 23:52:13,683 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:52:13,686 INFO L168 Benchmark]: Toolchain (without parser) took 1832.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 944.7 MB in the beginning and 1.0 GB in the end (delta: -103.4 MB). Peak memory consumption was 48.7 MB. Max. memory is 11.5 GB. [2019-11-15 23:52:13,686 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:52:13,688 INFO L168 Benchmark]: CACSL2BoogieTranslator took 367.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -200.9 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-11-15 23:52:13,689 INFO L168 Benchmark]: Boogie Preprocessor took 37.98 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. [2019-11-15 23:52:13,689 INFO L168 Benchmark]: RCFGBuilder took 286.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-11-15 23:52:13,694 INFO L168 Benchmark]: TraceAbstraction took 1083.18 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: 75.2 MB). Peak memory consumption was 75.2 MB. Max. memory is 11.5 GB. [2019-11-15 23:52:13,694 INFO L168 Benchmark]: Witness Printer took 50.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-15 23:52:13,701 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 367.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -200.9 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.98 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 286.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1083.18 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: 75.2 MB). Peak memory consumption was 75.2 MB. Max. memory is 11.5 GB. * Witness Printer took 50.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 14]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L10] int* p = malloc(10 * sizeof(int)); VAL [malloc(10 * sizeof(int))={3:0}, p={3:0}] [L12] CALL freePointer(p) VAL [p={3:0}] [L6] free(p) VAL [p={3:0}, p={3:0}] [L6] free(p) VAL [p={3:0}, p={3:0}] [L6] free(p) [L12] RET freePointer(p) VAL [malloc(10 * sizeof(int))={3:0}, p={3:0}] [L14] p[0] = 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 6 error locations. Result: UNSAFE, OverallTime: 1.0s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 35 SDtfs, 47 SDslu, 75 SDs, 0 SdLazy, 114 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 880 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...