./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/derefInLoop1.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_d2da0e6f-aef1-402b-9691-a0022bf9b174/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d2da0e6f-aef1-402b-9691-a0022bf9b174/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d2da0e6f-aef1-402b-9691-a0022bf9b174/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d2da0e6f-aef1-402b-9691-a0022bf9b174/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/derefInLoop1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d2da0e6f-aef1-402b-9691-a0022bf9b174/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d2da0e6f-aef1-402b-9691-a0022bf9b174/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 aa3ae4378a5284e50be7191d52900376e96b0fdc ................................................................................................................................................................................................................................................................................................................................................................ 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 15:30:21,425 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:30:21,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:30:21,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:30:21,435 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:30:21,435 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:30:21,436 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:30:21,438 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:30:21,439 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:30:21,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:30:21,440 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:30:21,441 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:30:21,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:30:21,442 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:30:21,443 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:30:21,444 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:30:21,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:30:21,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:30:21,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:30:21,448 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:30:21,449 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:30:21,450 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:30:21,451 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:30:21,451 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:30:21,453 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:30:21,453 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:30:21,453 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:30:21,453 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:30:21,454 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:30:21,454 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:30:21,454 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:30:21,455 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:30:21,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:30:21,456 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:30:21,457 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:30:21,457 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:30:21,457 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:30:21,457 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:30:21,458 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:30:21,458 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:30:21,459 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:30:21,460 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d2da0e6f-aef1-402b-9691-a0022bf9b174/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-12-07 15:30:21,471 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:30:21,471 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:30:21,472 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 15:30:21,472 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 15:30:21,472 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 15:30:21,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:30:21,473 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 15:30:21,473 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 15:30:21,473 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 15:30:21,473 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 15:30:21,473 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:30:21,473 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 15:30:21,474 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 15:30:21,474 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-07 15:30:21,474 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 15:30:21,474 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 15:30:21,474 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 15:30:21,474 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:30:21,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:30:21,475 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 15:30:21,475 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 15:30:21,475 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 15:30:21,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:30:21,475 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:30:21,475 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 15:30:21,475 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 15:30:21,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 15:30:21,476 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:30:21,476 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_d2da0e6f-aef1-402b-9691-a0022bf9b174/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 -> aa3ae4378a5284e50be7191d52900376e96b0fdc [2019-12-07 15:30:21,582 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:30:21,592 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:30:21,595 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:30:21,596 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:30:21,596 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:30:21,597 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d2da0e6f-aef1-402b-9691-a0022bf9b174/bin/uautomizer/../../sv-benchmarks/c/memsafety-ext3/derefInLoop1.c [2019-12-07 15:30:21,643 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d2da0e6f-aef1-402b-9691-a0022bf9b174/bin/uautomizer/data/91e774f89/372081b3a8ca47cb97c15c84fbd92026/FLAGa4538d9e7 [2019-12-07 15:30:22,064 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:30:22,064 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d2da0e6f-aef1-402b-9691-a0022bf9b174/sv-benchmarks/c/memsafety-ext3/derefInLoop1.c [2019-12-07 15:30:22,067 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d2da0e6f-aef1-402b-9691-a0022bf9b174/bin/uautomizer/data/91e774f89/372081b3a8ca47cb97c15c84fbd92026/FLAGa4538d9e7 [2019-12-07 15:30:22,079 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d2da0e6f-aef1-402b-9691-a0022bf9b174/bin/uautomizer/data/91e774f89/372081b3a8ca47cb97c15c84fbd92026 [2019-12-07 15:30:22,081 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:30:22,082 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-07 15:30:22,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:30:22,083 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:30:22,085 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:30:22,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:30:22" (1/1) ... [2019-12-07 15:30:22,087 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12b10c84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:30:22, skipping insertion in model container [2019-12-07 15:30:22,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:30:22" (1/1) ... [2019-12-07 15:30:22,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:30:22,102 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:30:22,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:30:22,249 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:30:22,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:30:22,271 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:30:22,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:30:22 WrapperNode [2019-12-07 15:30:22,271 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:30:22,272 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:30:22,272 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:30:22,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:30:22,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:30:22" (1/1) ... [2019-12-07 15:30:22,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:30:22" (1/1) ... [2019-12-07 15:30:22,287 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:30:22" (1/1) ... [2019-12-07 15:30:22,287 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:30:22" (1/1) ... [2019-12-07 15:30:22,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:30:22" (1/1) ... [2019-12-07 15:30:22,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:30:22" (1/1) ... [2019-12-07 15:30:22,294 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:30:22" (1/1) ... [2019-12-07 15:30:22,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:30:22,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:30:22,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:30:22,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:30:22,295 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:30:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d2da0e6f-aef1-402b-9691-a0022bf9b174/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 [2019-12-07 15:30:22,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-12-07 15:30:22,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:30:22,333 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-12-07 15:30:22,333 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-12-07 15:30:22,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 15:30:22,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 15:30:22,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 15:30:22,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-12-07 15:30:22,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:30:22,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 15:30:22,442 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:30:22,442 INFO L287 CfgBuilder]: Removed 1 assume(true) statements. [2019-12-07 15:30:22,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:30:22 BoogieIcfgContainer [2019-12-07 15:30:22,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:30:22,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 15:30:22,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 15:30:22,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 15:30:22,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 03:30:22" (1/3) ... [2019-12-07 15:30:22,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a29c79b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:30:22, skipping insertion in model container [2019-12-07 15:30:22,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:30:22" (2/3) ... [2019-12-07 15:30:22,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a29c79b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:30:22, skipping insertion in model container [2019-12-07 15:30:22,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:30:22" (3/3) ... [2019-12-07 15:30:22,447 INFO L109 eAbstractionObserver]: Analyzing ICFG derefInLoop1.c [2019-12-07 15:30:22,454 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 15:30:22,458 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-12-07 15:30:22,466 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-12-07 15:30:22,478 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 15:30:22,478 INFO L374 AbstractCegarLoop]: Hoare is false [2019-12-07 15:30:22,478 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 15:30:22,478 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:30:22,478 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:30:22,478 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 15:30:22,478 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:30:22,478 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 15:30:22,487 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-12-07 15:30:22,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 15:30:22,493 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:30:22,493 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:30:22,493 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 15:30:22,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:30:22,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1075805963, now seen corresponding path program 1 times [2019-12-07 15:30:22,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:30:22,503 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191671983] [2019-12-07 15:30:22,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:30:22,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:30:22,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:30:22,608 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 15:30:22,609 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191671983] [2019-12-07 15:30:22,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:30:22,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 15:30:22,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109814972] [2019-12-07 15:30:22,613 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 15:30:22,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:30:22,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:30:22,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:30:22,624 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 3 states. [2019-12-07 15:30:22,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:30:22,667 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2019-12-07 15:30:22,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:30:22,668 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-12-07 15:30:22,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:30:22,674 INFO L225 Difference]: With dead ends: 21 [2019-12-07 15:30:22,674 INFO L226 Difference]: Without dead ends: 16 [2019-12-07 15:30:22,675 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 15:30:22,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-07 15:30:22,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-12-07 15:30:22,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-07 15:30:22,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2019-12-07 15:30:22,696 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 9 [2019-12-07 15:30:22,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:30:22,696 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2019-12-07 15:30:22,696 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 15:30:22,696 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2019-12-07 15:30:22,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 15:30:22,697 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:30:22,697 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:30:22,697 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 15:30:22,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:30:22,697 INFO L82 PathProgramCache]: Analyzing trace with hash -1075817783, now seen corresponding path program 1 times [2019-12-07 15:30:22,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:30:22,698 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252135817] [2019-12-07 15:30:22,698 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:30:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:30:22,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:30:22,734 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 15:30:22,734 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252135817] [2019-12-07 15:30:22,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:30:22,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 15:30:22,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632280626] [2019-12-07 15:30:22,736 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 15:30:22,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:30:22,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 15:30:22,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:30:22,736 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 4 states. [2019-12-07 15:30:22,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:30:22,768 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2019-12-07 15:30:22,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 15:30:22,768 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-07 15:30:22,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:30:22,769 INFO L225 Difference]: With dead ends: 18 [2019-12-07 15:30:22,769 INFO L226 Difference]: Without dead ends: 18 [2019-12-07 15:30:22,770 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 15:30:22,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-12-07 15:30:22,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2019-12-07 15:30:22,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-12-07 15:30:22,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2019-12-07 15:30:22,773 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2019-12-07 15:30:22,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:30:22,773 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2019-12-07 15:30:22,774 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 15:30:22,774 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2019-12-07 15:30:22,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 15:30:22,774 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:30:22,774 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:30:22,775 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 15:30:22,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:30:22,775 INFO L82 PathProgramCache]: Analyzing trace with hash -643356833, now seen corresponding path program 1 times [2019-12-07 15:30:22,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:30:22,775 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641570622] [2019-12-07 15:30:22,775 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:30:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:30:22,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:30:22,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:30:22,816 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641570622] [2019-12-07 15:30:22,816 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716702908] [2019-12-07 15:30:22,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d2da0e6f-aef1-402b-9691-a0022bf9b174/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:30:22,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:30:22,851 INFO L264 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 15:30:22,855 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:30:22,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:30:22,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:30:22,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2019-12-07 15:30:22,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345066692] [2019-12-07 15:30:22,877 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 15:30:22,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:30:22,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 15:30:22,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-12-07 15:30:22,878 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 6 states. [2019-12-07 15:30:22,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:30:22,914 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-12-07 15:30:22,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 15:30:22,915 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-12-07 15:30:22,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:30:22,915 INFO L225 Difference]: With dead ends: 19 [2019-12-07 15:30:22,915 INFO L226 Difference]: Without dead ends: 19 [2019-12-07 15:30:22,916 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-12-07 15:30:22,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-12-07 15:30:22,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-12-07 15:30:22,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-12-07 15:30:22,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2019-12-07 15:30:22,918 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 12 [2019-12-07 15:30:22,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:30:22,918 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2019-12-07 15:30:22,918 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 15:30:22,918 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2019-12-07 15:30:22,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 15:30:22,918 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:30:22,918 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:30:23,119 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:30:23,120 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 15:30:23,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:30:23,120 INFO L82 PathProgramCache]: Analyzing trace with hash -643355199, now seen corresponding path program 1 times [2019-12-07 15:30:23,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:30:23,121 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817789738] [2019-12-07 15:30:23,121 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:30:23,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:30:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:30:23,189 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:30:23,189 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 15:30:23,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 03:30:23 BoogieIcfgContainer [2019-12-07 15:30:23,207 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 15:30:23,207 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:30:23,207 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:30:23,207 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:30:23,208 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:30:22" (3/4) ... [2019-12-07 15:30:23,209 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 15:30:23,236 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d2da0e6f-aef1-402b-9691-a0022bf9b174/bin/uautomizer/witness.graphml [2019-12-07 15:30:23,236 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:30:23,237 INFO L168 Benchmark]: Toolchain (without parser) took 1154.93 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.5 MB). Free memory was 945.1 MB in the beginning and 1.0 GB in the end (delta: -62.1 MB). Peak memory consumption was 35.5 MB. Max. memory is 11.5 GB. [2019-12-07 15:30:23,237 INFO L168 Benchmark]: CDTParser took 0.20 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 15:30:23,238 INFO L168 Benchmark]: CACSL2BoogieTranslator took 188.99 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.5 MB). Free memory was 945.1 MB in the beginning and 1.1 GB in the end (delta: -147.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-12-07 15:30:23,238 INFO L168 Benchmark]: Boogie Preprocessor took 22.96 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 15:30:23,238 INFO L168 Benchmark]: RCFGBuilder took 148.19 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: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. [2019-12-07 15:30:23,239 INFO L168 Benchmark]: TraceAbstraction took 763.30 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: 68.8 MB). Peak memory consumption was 68.8 MB. Max. memory is 11.5 GB. [2019-12-07 15:30:23,239 INFO L168 Benchmark]: Witness Printer took 28.76 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 15:30:23,241 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 188.99 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.5 MB). Free memory was 945.1 MB in the beginning and 1.1 GB in the end (delta: -147.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.96 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 148.19 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: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 763.30 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: 68.8 MB). Peak memory consumption was 68.8 MB. Max. memory is 11.5 GB. * Witness Printer took 28.76 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: 8]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L2] int* p; [L3] int i = 0; VAL [i=0] [L3] COND TRUE i < 2 [L4] int a[10]; VAL [a={3:0}, i=0] [L5] COND TRUE i == 0 [L6] p = a VAL [a={3:0}, i=0, p={3:0}] [L3] i++ [L3] COND TRUE i < 2 [L4] int a[10]; VAL [a={2:0}, i=1, p={3:0}] [L5] COND FALSE !(i == 0) VAL [a={2:0}, i=1, p={3:0}] [L8] p[0] = 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 18 locations, 3 error locations. Result: UNSAFE, OverallTime: 0.7s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 39 SDtfs, 13 SDslu, 34 SDs, 0 SdLazy, 62 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=3, 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 821 SizeOfPredicates, 1 NumberOfNonLiveVariables, 52 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2 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...