./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/working_dir_87e39754-59cd-4a19-a9bb-1f791ed53b6d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_87e39754-59cd-4a19-a9bb-1f791ed53b6d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_87e39754-59cd-4a19-a9bb-1f791ed53b6d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_87e39754-59cd-4a19-a9bb-1f791ed53b6d/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/derefAfterFree1.c -s /tmp/vcloud-vcloud-master/worker/working_dir_87e39754-59cd-4a19-a9bb-1f791ed53b6d/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_87e39754-59cd-4a19-a9bb-1f791ed53b6d/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 [2019-10-22 08:56:17,573 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:56:17,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:56:17,583 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:56:17,583 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:56:17,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:56:17,585 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:56:17,587 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:56:17,588 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:56:17,588 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:56:17,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:56:17,590 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:56:17,590 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:56:17,591 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:56:17,592 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:56:17,593 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:56:17,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:56:17,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:56:17,596 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:56:17,598 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:56:17,599 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:56:17,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:56:17,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:56:17,602 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:56:17,604 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:56:17,604 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:56:17,604 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:56:17,605 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:56:17,606 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:56:17,607 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:56:17,607 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:56:17,608 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:56:17,608 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:56:17,609 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:56:17,610 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:56:17,610 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:56:17,611 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:56:17,611 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:56:17,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:56:17,612 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:56:17,613 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:56:17,614 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_87e39754-59cd-4a19-a9bb-1f791ed53b6d/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-10-22 08:56:17,625 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:56:17,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:56:17,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:56:17,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:56:17,627 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:56:17,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:56:17,627 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:56:17,627 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:56:17,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:56:17,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:56:17,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:56:17,628 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-10-22 08:56:17,628 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-10-22 08:56:17,628 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-10-22 08:56:17,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:56:17,628 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:56:17,628 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:56:17,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:56:17,629 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:56:17,629 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:56:17,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:56:17,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:56:17,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:56:17,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:56:17,630 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:56:17,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:56:17,630 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/working_dir_87e39754-59cd-4a19-a9bb-1f791ed53b6d/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 [2019-10-22 08:56:17,653 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:56:17,663 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:56:17,666 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:56:17,667 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:56:17,668 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:56:17,668 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_87e39754-59cd-4a19-a9bb-1f791ed53b6d/bin/uautomizer/../../sv-benchmarks/c/memsafety-ext3/derefAfterFree1.c [2019-10-22 08:56:17,714 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_87e39754-59cd-4a19-a9bb-1f791ed53b6d/bin/uautomizer/data/3349441d4/17755dfb07e24c6fb2bdbf3c2cc8d992/FLAG2fa1e3258 [2019-10-22 08:56:18,090 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:56:18,091 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_87e39754-59cd-4a19-a9bb-1f791ed53b6d/sv-benchmarks/c/memsafety-ext3/derefAfterFree1.c [2019-10-22 08:56:18,096 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_87e39754-59cd-4a19-a9bb-1f791ed53b6d/bin/uautomizer/data/3349441d4/17755dfb07e24c6fb2bdbf3c2cc8d992/FLAG2fa1e3258 [2019-10-22 08:56:18,112 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_87e39754-59cd-4a19-a9bb-1f791ed53b6d/bin/uautomizer/data/3349441d4/17755dfb07e24c6fb2bdbf3c2cc8d992 [2019-10-22 08:56:18,115 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:56:18,118 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-10-22 08:56:18,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:18,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:56:18,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:56:18,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:18" (1/1) ... [2019-10-22 08:56:18,138 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40fecf8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:18, skipping insertion in model container [2019-10-22 08:56:18,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:18" (1/1) ... [2019-10-22 08:56:18,156 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:56:18,172 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:56:18,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:18,373 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:56:18,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:18,403 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:56:18,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:18 WrapperNode [2019-10-22 08:56:18,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:18,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:56:18,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:56:18,405 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:56:18,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:18" (1/1) ... [2019-10-22 08:56:18,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:18" (1/1) ... [2019-10-22 08:56:18,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:18" (1/1) ... [2019-10-22 08:56:18,424 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:18" (1/1) ... [2019-10-22 08:56:18,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:18" (1/1) ... [2019-10-22 08:56:18,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:18" (1/1) ... [2019-10-22 08:56:18,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:18" (1/1) ... [2019-10-22 08:56:18,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:56:18,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:56:18,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:56:18,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:56:18,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_87e39754-59cd-4a19-a9bb-1f791ed53b6d/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 [2019-10-22 08:56:18,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-22 08:56:18,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:56:18,494 INFO L138 BoogieDeclarations]: Found implementation of procedure freePointer [2019-10-22 08:56:18,495 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-22 08:56:18,495 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-22 08:56:18,495 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-22 08:56:18,496 INFO L130 BoogieDeclarations]: Found specification of procedure freePointer [2019-10-22 08:56:18,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:56:18,496 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-22 08:56:18,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-22 08:56:18,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 08:56:18,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-22 08:56:18,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:56:18,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 08:56:18,750 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:56:18,751 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-22 08:56:18,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:18 BoogieIcfgContainer [2019-10-22 08:56:18,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:56:18,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:56:18,753 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:56:18,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:56:18,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:56:18" (1/3) ... [2019-10-22 08:56:18,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@396e626a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:56:18, skipping insertion in model container [2019-10-22 08:56:18,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:18" (2/3) ... [2019-10-22 08:56:18,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@396e626a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:56:18, skipping insertion in model container [2019-10-22 08:56:18,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:18" (3/3) ... [2019-10-22 08:56:18,766 INFO L109 eAbstractionObserver]: Analyzing ICFG derefAfterFree1.c [2019-10-22 08:56:18,778 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:56:18,786 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-10-22 08:56:18,797 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-10-22 08:56:18,819 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:56:18,819 INFO L374 AbstractCegarLoop]: Hoare is false [2019-10-22 08:56:18,819 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:56:18,819 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:56:18,819 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:56:18,820 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:56:18,820 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:56:18,820 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:56:18,841 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-10-22 08:56:18,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 08:56:18,851 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:18,852 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:18,854 INFO L410 AbstractCegarLoop]: === Iteration 1 === [freePointerErr0ASSERT_VIOLATIONMEMORY_FREE, freePointerErr2ASSERT_VIOLATIONMEMORY_FREE, freePointerErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2019-10-22 08:56:18,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:18,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1608321379, now seen corresponding path program 1 times [2019-10-22 08:56:18,867 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:18,867 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448369594] [2019-10-22 08:56:18,867 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:18,867 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:18,867 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:19,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:19,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:19,066 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448369594] [2019-10-22 08:56:19,067 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:19,067 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:56:19,067 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822201602] [2019-10-22 08:56:19,070 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 08:56:19,070 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:19,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 08:56:19,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:56:19,080 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 6 states. [2019-10-22 08:56:19,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:19,215 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2019-10-22 08:56:19,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 08:56:19,217 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2019-10-22 08:56:19,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:19,225 INFO L225 Difference]: With dead ends: 24 [2019-10-22 08:56:19,225 INFO L226 Difference]: Without dead ends: 21 [2019-10-22 08:56:19,226 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 [2019-10-22 08:56:19,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-22 08:56:19,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-10-22 08:56:19,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-22 08:56:19,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2019-10-22 08:56:19,261 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 9 [2019-10-22 08:56:19,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:19,262 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2019-10-22 08:56:19,262 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 08:56:19,262 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2019-10-22 08:56:19,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 08:56:19,263 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:19,263 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:19,273 INFO L410 AbstractCegarLoop]: === Iteration 2 === [freePointerErr0ASSERT_VIOLATIONMEMORY_FREE, freePointerErr2ASSERT_VIOLATIONMEMORY_FREE, freePointerErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2019-10-22 08:56:19,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:19,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1681644769, now seen corresponding path program 1 times [2019-10-22 08:56:19,274 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:19,274 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639104844] [2019-10-22 08:56:19,274 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:19,274 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:19,274 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:19,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:19,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:19,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:19,382 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639104844] [2019-10-22 08:56:19,382 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:19,382 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:56:19,383 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332704778] [2019-10-22 08:56:19,384 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 08:56:19,384 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:19,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 08:56:19,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:56:19,385 INFO L87 Difference]: Start difference. First operand 21 states and 20 transitions. Second operand 6 states. [2019-10-22 08:56:19,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:19,487 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2019-10-22 08:56:19,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 08:56:19,488 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-10-22 08:56:19,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:19,488 INFO L225 Difference]: With dead ends: 20 [2019-10-22 08:56:19,488 INFO L226 Difference]: Without dead ends: 20 [2019-10-22 08:56:19,489 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-10-22 08:56:19,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-22 08:56:19,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-22 08:56:19,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-22 08:56:19,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2019-10-22 08:56:19,492 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 10 [2019-10-22 08:56:19,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:19,492 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2019-10-22 08:56:19,492 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 08:56:19,492 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2019-10-22 08:56:19,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 08:56:19,494 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:19,494 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:19,494 INFO L410 AbstractCegarLoop]: === Iteration 3 === [freePointerErr0ASSERT_VIOLATIONMEMORY_FREE, freePointerErr2ASSERT_VIOLATIONMEMORY_FREE, freePointerErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2019-10-22 08:56:19,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:19,495 INFO L82 PathProgramCache]: Analyzing trace with hash -591380251, now seen corresponding path program 1 times [2019-10-22 08:56:19,495 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:19,495 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640198696] [2019-10-22 08:56:19,495 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:19,495 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:19,495 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:19,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:19,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:19,587 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640198696] [2019-10-22 08:56:19,588 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:19,588 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:56:19,588 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200453828] [2019-10-22 08:56:19,588 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 08:56:19,588 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:19,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 08:56:19,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:56:19,594 INFO L87 Difference]: Start difference. First operand 20 states and 19 transitions. Second operand 6 states. [2019-10-22 08:56:19,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:19,667 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2019-10-22 08:56:19,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:56:19,668 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-10-22 08:56:19,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:56:19,668 INFO L225 Difference]: With dead ends: 19 [2019-10-22 08:56:19,668 INFO L226 Difference]: Without dead ends: 19 [2019-10-22 08:56:19,669 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 [2019-10-22 08:56:19,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-10-22 08:56:19,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-10-22 08:56:19,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-22 08:56:19,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2019-10-22 08:56:19,672 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 11 [2019-10-22 08:56:19,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:56:19,672 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2019-10-22 08:56:19,672 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 08:56:19,672 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2019-10-22 08:56:19,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-22 08:56:19,673 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:56:19,673 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:56:19,674 INFO L410 AbstractCegarLoop]: === Iteration 4 === [freePointerErr0ASSERT_VIOLATIONMEMORY_FREE, freePointerErr2ASSERT_VIOLATIONMEMORY_FREE, freePointerErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2019-10-22 08:56:19,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:19,674 INFO L82 PathProgramCache]: Analyzing trace with hash 146827991, now seen corresponding path program 1 times [2019-10-22 08:56:19,674 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:19,674 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361064787] [2019-10-22 08:56:19,674 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:19,675 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:19,675 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:19,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:19,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:19,722 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:19,722 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 08:56:19,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:56:19 BoogieIcfgContainer [2019-10-22 08:56:19,752 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:56:19,752 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:56:19,752 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:56:19,752 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:56:19,753 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:18" (3/4) ... [2019-10-22 08:56:19,757 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 08:56:19,799 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_87e39754-59cd-4a19-a9bb-1f791ed53b6d/bin/uautomizer/witness.graphml [2019-10-22 08:56:19,800 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:56:19,801 INFO L168 Benchmark]: Toolchain (without parser) took 1684.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 940.5 MB in the beginning and 1.0 GB in the end (delta: -107.2 MB). Peak memory consumption was 40.6 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:19,802 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 960.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:19,802 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 940.5 MB in the beginning and 1.1 GB in the end (delta: -205.0 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:19,803 INFO L168 Benchmark]: Boogie Preprocessor took 30.20 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:19,803 INFO L168 Benchmark]: RCFGBuilder took 317.21 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: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:19,804 INFO L168 Benchmark]: TraceAbstraction took 998.63 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: 75.4 MB). Peak memory consumption was 75.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:19,804 INFO L168 Benchmark]: Witness Printer took 47.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:19,807 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 960.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 284.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 940.5 MB in the beginning and 1.1 GB in the end (delta: -205.0 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.20 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 317.21 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: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 998.63 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: 75.4 MB). Peak memory consumption was 75.4 MB. Max. memory is 11.5 GB. * Witness Printer took 47.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 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: 0.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.3s, 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...