./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 f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1307ef3d-0a21-4ff8-a679-ec8862f93381/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_1307ef3d-0a21-4ff8-a679-ec8862f93381/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1307ef3d-0a21-4ff8-a679-ec8862f93381/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1307ef3d-0a21-4ff8-a679-ec8862f93381/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/derefAfterFree1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1307ef3d-0a21-4ff8-a679-ec8862f93381/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1307ef3d-0a21-4ff8-a679-ec8862f93381/bin/utaipan --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 Taipan --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 0.1.25-f470102 [2019-12-07 16:38:32,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 16:38:32,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 16:38:32,092 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 16:38:32,093 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 16:38:32,093 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 16:38:32,094 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 16:38:32,096 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 16:38:32,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 16:38:32,097 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 16:38:32,098 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 16:38:32,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 16:38:32,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 16:38:32,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 16:38:32,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 16:38:32,101 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 16:38:32,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 16:38:32,102 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 16:38:32,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 16:38:32,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 16:38:32,107 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 16:38:32,107 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 16:38:32,108 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 16:38:32,109 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 16:38:32,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 16:38:32,111 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 16:38:32,111 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 16:38:32,111 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 16:38:32,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 16:38:32,112 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 16:38:32,112 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 16:38:32,113 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 16:38:32,113 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 16:38:32,113 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 16:38:32,114 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 16:38:32,114 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 16:38:32,115 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 16:38:32,115 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 16:38:32,115 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 16:38:32,115 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 16:38:32,116 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 16:38:32,116 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1307ef3d-0a21-4ff8-a679-ec8862f93381/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2019-12-07 16:38:32,126 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 16:38:32,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 16:38:32,127 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 16:38:32,127 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 16:38:32,127 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 16:38:32,127 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 16:38:32,127 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 16:38:32,128 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 16:38:32,128 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 16:38:32,128 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 16:38:32,128 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 16:38:32,128 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 16:38:32,128 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 16:38:32,128 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 16:38:32,128 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 16:38:32,129 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 16:38:32,129 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 16:38:32,129 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 16:38:32,129 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 16:38:32,129 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 16:38:32,129 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 16:38:32,130 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 16:38:32,130 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 16:38:32,130 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 16:38:32,130 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 16:38:32,130 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-07 16:38:32,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 16:38:32,130 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 16:38:32,130 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 16:38:32,131 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 16:38:32,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 16:38:32,131 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 16:38:32,131 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 16:38:32,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 16:38:32,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 16:38:32,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 16:38:32,132 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 16:38:32,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 16:38:32,132 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 16:38:32,132 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 16:38:32,132 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_1307ef3d-0a21-4ff8-a679-ec8862f93381/bin/utaipan 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 -> Taipan 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 [2019-12-07 16:38:32,234 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 16:38:32,242 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 16:38:32,244 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 16:38:32,245 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 16:38:32,245 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 16:38:32,246 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1307ef3d-0a21-4ff8-a679-ec8862f93381/bin/utaipan/../../sv-benchmarks/c/memsafety-ext3/derefAfterFree1.c [2019-12-07 16:38:32,282 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1307ef3d-0a21-4ff8-a679-ec8862f93381/bin/utaipan/data/e48c6d8bf/d02ca1d549cd463383d3d5ce0da96159/FLAG9ffdcfc7f [2019-12-07 16:38:32,712 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 16:38:32,712 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1307ef3d-0a21-4ff8-a679-ec8862f93381/sv-benchmarks/c/memsafety-ext3/derefAfterFree1.c [2019-12-07 16:38:32,716 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1307ef3d-0a21-4ff8-a679-ec8862f93381/bin/utaipan/data/e48c6d8bf/d02ca1d549cd463383d3d5ce0da96159/FLAG9ffdcfc7f [2019-12-07 16:38:32,724 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1307ef3d-0a21-4ff8-a679-ec8862f93381/bin/utaipan/data/e48c6d8bf/d02ca1d549cd463383d3d5ce0da96159 [2019-12-07 16:38:32,726 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 16:38:32,727 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 16:38:32,728 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 16:38:32,728 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 16:38:32,730 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 16:38:32,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:38:32" (1/1) ... [2019-12-07 16:38:32,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b1d1bf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:38:32, skipping insertion in model container [2019-12-07 16:38:32,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:38:32" (1/1) ... [2019-12-07 16:38:32,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 16:38:32,747 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 16:38:32,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:38:32,878 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 16:38:32,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:38:32,901 INFO L208 MainTranslator]: Completed translation [2019-12-07 16:38:32,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:38:32 WrapperNode [2019-12-07 16:38:32,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 16:38:32,902 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 16:38:32,902 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 16:38:32,902 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 16:38:32,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:38:32" (1/1) ... [2019-12-07 16:38:32,912 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:38:32" (1/1) ... [2019-12-07 16:38:32,923 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 16:38:32,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 16:38:32,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 16:38:32,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 16:38:32,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:38:32" (1/1) ... [2019-12-07 16:38:32,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:38:32" (1/1) ... [2019-12-07 16:38:32,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:38:32" (1/1) ... [2019-12-07 16:38:32,930 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:38:32" (1/1) ... [2019-12-07 16:38:32,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:38:32" (1/1) ... [2019-12-07 16:38:32,934 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:38:32" (1/1) ... [2019-12-07 16:38:32,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:38:32" (1/1) ... [2019-12-07 16:38:32,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 16:38:32,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 16:38:32,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 16:38:32,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 16:38:32,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:38:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1307ef3d-0a21-4ff8-a679-ec8862f93381/bin/utaipan/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 [2019-12-07 16:38:32,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 16:38:32,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-12-07 16:38:32,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 16:38:32,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 16:38:32,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 16:38:33,111 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 16:38:33,111 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 16:38:33,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:38:33 BoogieIcfgContainer [2019-12-07 16:38:33,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 16:38:33,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 16:38:33,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 16:38:33,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 16:38:33,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 04:38:32" (1/3) ... [2019-12-07 16:38:33,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd175d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:38:33, skipping insertion in model container [2019-12-07 16:38:33,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:38:32" (2/3) ... [2019-12-07 16:38:33,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd175d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:38:33, skipping insertion in model container [2019-12-07 16:38:33,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:38:33" (3/3) ... [2019-12-07 16:38:33,116 INFO L109 eAbstractionObserver]: Analyzing ICFG derefAfterFree1.c [2019-12-07 16:38:33,123 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 16:38:33,127 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-12-07 16:38:33,134 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-12-07 16:38:33,146 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 16:38:33,146 INFO L374 AbstractCegarLoop]: Hoare is false [2019-12-07 16:38:33,146 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 16:38:33,146 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 16:38:33,146 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 16:38:33,146 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 16:38:33,147 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 16:38:33,147 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 16:38:33,155 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2019-12-07 16:38:33,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-12-07 16:38:33,159 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:38:33,160 INFO L410 BasicCegarLoop]: trace histogram [1, 1] [2019-12-07 16:38:33,160 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION]=== [2019-12-07 16:38:33,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:38:33,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1522, now seen corresponding path program 1 times [2019-12-07 16:38:33,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 16:38:33,170 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046230139] [2019-12-07 16:38:33,170 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:38:33,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:38:33,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:38:33,265 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046230139] [2019-12-07 16:38:33,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:38:33,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 16:38:33,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12025611] [2019-12-07 16:38:33,269 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 16:38:33,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 16:38:33,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 16:38:33,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 16:38:33,279 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 3 states. [2019-12-07 16:38:33,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:38:33,290 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2019-12-07 16:38:33,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 16:38:33,292 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-12-07 16:38:33,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:38:33,297 INFO L225 Difference]: With dead ends: 12 [2019-12-07 16:38:33,297 INFO L226 Difference]: Without dead ends: 11 [2019-12-07 16:38:33,298 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 16:38:33,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-12-07 16:38:33,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-12-07 16:38:33,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-12-07 16:38:33,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2019-12-07 16:38:33,318 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 2 [2019-12-07 16:38:33,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:38:33,319 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2019-12-07 16:38:33,319 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 16:38:33,319 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2019-12-07 16:38:33,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-12-07 16:38:33,319 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:38:33,319 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-12-07 16:38:33,319 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION]=== [2019-12-07 16:38:33,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:38:33,320 INFO L82 PathProgramCache]: Analyzing trace with hash 47218, now seen corresponding path program 1 times [2019-12-07 16:38:33,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 16:38:33,320 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32982617] [2019-12-07 16:38:33,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:38:33,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:38:33,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:38:33,340 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32982617] [2019-12-07 16:38:33,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:38:33,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 16:38:33,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522854266] [2019-12-07 16:38:33,341 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 16:38:33,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 16:38:33,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 16:38:33,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 16:38:33,341 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand 3 states. [2019-12-07 16:38:33,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:38:33,347 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2019-12-07 16:38:33,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 16:38:33,347 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-12-07 16:38:33,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:38:33,348 INFO L225 Difference]: With dead ends: 10 [2019-12-07 16:38:33,348 INFO L226 Difference]: Without dead ends: 10 [2019-12-07 16:38:33,348 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 16:38:33,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-12-07 16:38:33,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-12-07 16:38:33,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-12-07 16:38:33,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2019-12-07 16:38:33,350 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 3 [2019-12-07 16:38:33,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:38:33,350 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2019-12-07 16:38:33,350 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 16:38:33,350 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2019-12-07 16:38:33,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-07 16:38:33,350 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:38:33,350 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-07 16:38:33,350 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION]=== [2019-12-07 16:38:33,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:38:33,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1463796, now seen corresponding path program 1 times [2019-12-07 16:38:33,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 16:38:33,351 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117083735] [2019-12-07 16:38:33,351 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:38:33,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:38:33,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:38:33,367 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117083735] [2019-12-07 16:38:33,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:38:33,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 16:38:33,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333053066] [2019-12-07 16:38:33,368 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 16:38:33,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 16:38:33,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 16:38:33,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 16:38:33,368 INFO L87 Difference]: Start difference. First operand 10 states and 9 transitions. Second operand 3 states. [2019-12-07 16:38:33,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:38:33,377 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2019-12-07 16:38:33,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 16:38:33,378 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-07 16:38:33,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:38:33,378 INFO L225 Difference]: With dead ends: 9 [2019-12-07 16:38:33,378 INFO L226 Difference]: Without dead ends: 9 [2019-12-07 16:38:33,378 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 16:38:33,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-12-07 16:38:33,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-12-07 16:38:33,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-12-07 16:38:33,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2019-12-07 16:38:33,380 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 4 [2019-12-07 16:38:33,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:38:33,380 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2019-12-07 16:38:33,380 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 16:38:33,380 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2019-12-07 16:38:33,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-07 16:38:33,380 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:38:33,380 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-07 16:38:33,381 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3REQUIRES_VIOLATION]=== [2019-12-07 16:38:33,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:38:33,381 INFO L82 PathProgramCache]: Analyzing trace with hash 45377718, now seen corresponding path program 1 times [2019-12-07 16:38:33,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 16:38:33,381 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789689066] [2019-12-07 16:38:33,381 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:38:33,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:38:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 16:38:33,413 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 16:38:33,413 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 16:38:33,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 04:38:33 BoogieIcfgContainer [2019-12-07 16:38:33,426 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 16:38:33,426 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 16:38:33,426 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 16:38:33,426 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 16:38:33,427 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:38:33" (3/4) ... [2019-12-07 16:38:33,428 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 16:38:33,452 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1307ef3d-0a21-4ff8-a679-ec8862f93381/bin/utaipan/witness.graphml [2019-12-07 16:38:33,452 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 16:38:33,454 INFO L168 Benchmark]: Toolchain (without parser) took 726.45 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 88.1 MB). Free memory was 945.2 MB in the beginning and 1.0 GB in the end (delta: -82.7 MB). Peak memory consumption was 5.3 MB. Max. memory is 11.5 GB. [2019-12-07 16:38:33,454 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:38:33,455 INFO L168 Benchmark]: CACSL2BoogieTranslator took 173.89 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 88.1 MB). Free memory was 945.2 MB in the beginning and 1.1 GB in the end (delta: -137.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 11.5 GB. [2019-12-07 16:38:33,455 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.54 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:38:33,456 INFO L168 Benchmark]: Boogie Preprocessor took 11.90 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:38:33,456 INFO L168 Benchmark]: RCFGBuilder took 176.23 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: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2019-12-07 16:38:33,457 INFO L168 Benchmark]: TraceAbstraction took 313.58 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: 33.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 11.5 GB. [2019-12-07 16:38:33,457 INFO L168 Benchmark]: Witness Printer took 26.45 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:38:33,460 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 173.89 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 88.1 MB). Free memory was 945.2 MB in the beginning and 1.1 GB in the end (delta: -137.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 21.54 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.90 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 176.23 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: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 313.58 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: 33.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 11.5 GB. * Witness Printer took 26.45 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: 14]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L10] int* p = malloc(10 * sizeof(int)); [L6] free(p) [L6] free(p) [L6] free(p) [L14] p[0] = 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 6 error locations. Result: UNSAFE, OverallTime: 0.2s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 17 SDslu, 1 SDs, 0 SdLazy, 10 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 68 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...