./Ultimate.py --spec ../../sv-benchmarks/c/MemSafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/derefInLoop1_false-valid-deref.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_5f35eec0-d831-4a66-90cc-70bd3d3be415/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_5f35eec0-d831-4a66-90cc-70bd3d3be415/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_5f35eec0-d831-4a66-90cc-70bd3d3be415/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_5f35eec0-d831-4a66-90cc-70bd3d3be415/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/derefInLoop1_false-valid-deref.c -s /tmp/vcloud-vcloud-master/worker/working_dir_5f35eec0-d831-4a66-90cc-70bd3d3be415/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_5f35eec0-d831-4a66-90cc-70bd3d3be415/bin-2019/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 0.1.23-1dbac8b [2018-10-27 04:45:29,616 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 04:45:29,618 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 04:45:29,629 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 04:45:29,630 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 04:45:29,631 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 04:45:29,633 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 04:45:29,635 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 04:45:29,637 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 04:45:29,639 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 04:45:29,641 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 04:45:29,641 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 04:45:29,642 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 04:45:29,644 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 04:45:29,650 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 04:45:29,650 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 04:45:29,651 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 04:45:29,652 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 04:45:29,653 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 04:45:29,657 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 04:45:29,657 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 04:45:29,658 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 04:45:29,659 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 04:45:29,659 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 04:45:29,660 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 04:45:29,660 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 04:45:29,661 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 04:45:29,664 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 04:45:29,665 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 04:45:29,666 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 04:45:29,668 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 04:45:29,668 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 04:45:29,668 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 04:45:29,669 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 04:45:29,669 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 04:45:29,670 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 04:45:29,670 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_5f35eec0-d831-4a66-90cc-70bd3d3be415/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-10-27 04:45:29,682 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 04:45:29,683 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 04:45:29,683 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 04:45:29,684 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 04:45:29,684 INFO L133 SettingsManager]: * Use SBE=true [2018-10-27 04:45:29,684 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 04:45:29,684 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-27 04:45:29,684 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 04:45:29,684 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 04:45:29,684 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-27 04:45:29,685 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 04:45:29,685 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-10-27 04:45:29,685 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-10-27 04:45:29,685 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-10-27 04:45:29,685 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 04:45:29,687 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-27 04:45:29,687 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 04:45:29,687 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 04:45:29,687 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 04:45:29,687 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 04:45:29,687 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 04:45:29,687 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 04:45:29,688 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 04:45:29,688 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-27 04:45:29,688 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 04:45:29,688 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in 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_5f35eec0-d831-4a66-90cc-70bd3d3be415/bin-2019/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 [2018-10-27 04:45:29,714 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 04:45:29,725 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 04:45:29,730 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 04:45:29,732 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 04:45:29,732 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 04:45:29,733 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_5f35eec0-d831-4a66-90cc-70bd3d3be415/bin-2019/uautomizer/../../sv-benchmarks/c/memsafety-ext3/derefInLoop1_false-valid-deref.c [2018-10-27 04:45:29,780 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5f35eec0-d831-4a66-90cc-70bd3d3be415/bin-2019/uautomizer/data/57b274e92/537292b5069942ca8c9b12a695977735/FLAGe63a22711 [2018-10-27 04:45:30,125 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 04:45:30,125 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_5f35eec0-d831-4a66-90cc-70bd3d3be415/sv-benchmarks/c/memsafety-ext3/derefInLoop1_false-valid-deref.c [2018-10-27 04:45:30,130 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5f35eec0-d831-4a66-90cc-70bd3d3be415/bin-2019/uautomizer/data/57b274e92/537292b5069942ca8c9b12a695977735/FLAGe63a22711 [2018-10-27 04:45:30,140 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_5f35eec0-d831-4a66-90cc-70bd3d3be415/bin-2019/uautomizer/data/57b274e92/537292b5069942ca8c9b12a695977735 [2018-10-27 04:45:30,142 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 04:45:30,143 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 04:45:30,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 04:45:30,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 04:45:30,147 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 04:45:30,150 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:45:30" (1/1) ... [2018-10-27 04:45:30,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67ed68ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:30, skipping insertion in model container [2018-10-27 04:45:30,157 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:45:30" (1/1) ... [2018-10-27 04:45:30,163 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 04:45:30,174 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 04:45:30,282 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 04:45:30,289 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 04:45:30,299 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 04:45:30,312 INFO L193 MainTranslator]: Completed translation [2018-10-27 04:45:30,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:30 WrapperNode [2018-10-27 04:45:30,312 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 04:45:30,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 04:45:30,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 04:45:30,313 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 04:45:30,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:30" (1/1) ... [2018-10-27 04:45:30,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:30" (1/1) ... [2018-10-27 04:45:30,331 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:30" (1/1) ... [2018-10-27 04:45:30,331 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:30" (1/1) ... [2018-10-27 04:45:30,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:30" (1/1) ... [2018-10-27 04:45:30,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:30" (1/1) ... [2018-10-27 04:45:30,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:30" (1/1) ... [2018-10-27 04:45:30,341 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 04:45:30,341 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 04:45:30,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 04:45:30,341 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 04:45:30,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5f35eec0-d831-4a66-90cc-70bd3d3be415/bin-2019/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 [2018-10-27 04:45:30,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 04:45:30,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 04:45:30,473 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 04:45:30,473 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 04:45:30,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-10-27 04:45:30,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-10-27 04:45:30,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-10-27 04:45:30,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 04:45:30,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 04:45:30,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-10-27 04:45:30,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-10-27 04:45:30,801 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 04:45:30,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:45:30 BoogieIcfgContainer [2018-10-27 04:45:30,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 04:45:30,802 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 04:45:30,802 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 04:45:30,804 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 04:45:30,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:45:30" (1/3) ... [2018-10-27 04:45:30,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29bd9152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:45:30, skipping insertion in model container [2018-10-27 04:45:30,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:30" (2/3) ... [2018-10-27 04:45:30,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29bd9152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:45:30, skipping insertion in model container [2018-10-27 04:45:30,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:45:30" (3/3) ... [2018-10-27 04:45:30,808 INFO L112 eAbstractionObserver]: Analyzing ICFG derefInLoop1_false-valid-deref.c [2018-10-27 04:45:30,816 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 04:45:30,822 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-10-27 04:45:30,834 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-10-27 04:45:30,855 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 04:45:30,856 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 04:45:30,856 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-27 04:45:30,856 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 04:45:30,856 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 04:45:30,856 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 04:45:30,856 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 04:45:30,856 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 04:45:30,857 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 04:45:30,869 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-10-27 04:45:30,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-27 04:45:30,886 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:30,887 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:30,889 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2018-10-27 04:45:30,894 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:30,905 INFO L82 PathProgramCache]: Analyzing trace with hash 402525437, now seen corresponding path program 1 times [2018-10-27 04:45:30,907 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:30,908 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:30,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:30,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:30,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:30,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:31,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:45:31,008 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 04:45:31,009 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 04:45:31,012 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-27 04:45:31,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-27 04:45:31,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-27 04:45:31,023 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2018-10-27 04:45:31,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:31,035 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2018-10-27 04:45:31,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-27 04:45:31,037 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2018-10-27 04:45:31,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:31,045 INFO L225 Difference]: With dead ends: 22 [2018-10-27 04:45:31,045 INFO L226 Difference]: Without dead ends: 19 [2018-10-27 04:45:31,047 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-27 04:45:31,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-27 04:45:31,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-27 04:45:31,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-27 04:45:31,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-10-27 04:45:31,070 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 9 [2018-10-27 04:45:31,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:31,070 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-10-27 04:45:31,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-27 04:45:31,071 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-10-27 04:45:31,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-27 04:45:31,071 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:31,071 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:31,071 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2018-10-27 04:45:31,072 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:31,072 INFO L82 PathProgramCache]: Analyzing trace with hash -407227449, now seen corresponding path program 1 times [2018-10-27 04:45:31,072 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:31,072 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:31,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:31,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:31,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:31,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:31,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:45:31,112 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 04:45:31,112 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 04:45:31,113 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 04:45:31,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 04:45:31,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 04:45:31,113 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 3 states. [2018-10-27 04:45:31,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:31,146 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2018-10-27 04:45:31,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 04:45:31,147 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-10-27 04:45:31,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:31,147 INFO L225 Difference]: With dead ends: 24 [2018-10-27 04:45:31,147 INFO L226 Difference]: Without dead ends: 24 [2018-10-27 04:45:31,148 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 04:45:31,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-27 04:45:31,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2018-10-27 04:45:31,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-27 04:45:31,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-10-27 04:45:31,151 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 10 [2018-10-27 04:45:31,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:31,151 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-10-27 04:45:31,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 04:45:31,152 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-10-27 04:45:31,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-27 04:45:31,152 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:31,152 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:31,152 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2018-10-27 04:45:31,153 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:31,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1433742293, now seen corresponding path program 1 times [2018-10-27 04:45:31,153 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:31,153 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:31,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:31,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:31,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:31,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:31,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:45:31,217 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 04:45:31,217 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5f35eec0-d831-4a66-90cc-70bd3d3be415/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-27 04:45:31,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 04:45:31,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 04:45:31,258 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 04:45:31,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 04:45:31,306 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-27 04:45:31,306 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-10-27 04:45:31,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 04:45:31,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 04:45:31,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-27 04:45:31,307 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 5 states. [2018-10-27 04:45:31,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 04:45:31,364 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2018-10-27 04:45:31,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 04:45:31,365 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-10-27 04:45:31,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 04:45:31,365 INFO L225 Difference]: With dead ends: 28 [2018-10-27 04:45:31,365 INFO L226 Difference]: Without dead ends: 28 [2018-10-27 04:45:31,366 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-27 04:45:31,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-27 04:45:31,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-10-27 04:45:31,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-27 04:45:31,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2018-10-27 04:45:31,369 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 17 [2018-10-27 04:45:31,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 04:45:31,369 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2018-10-27 04:45:31,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 04:45:31,369 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2018-10-27 04:45:31,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-27 04:45:31,371 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:31,372 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:31,372 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION]=== [2018-10-27 04:45:31,372 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:31,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1496381948, now seen corresponding path program 1 times [2018-10-27 04:45:31,372 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:31,372 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:31,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:31,373 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:31,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 04:45:31,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 04:45:31,411 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-27 04:45:31,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 04:45:31 BoogieIcfgContainer [2018-10-27 04:45:31,431 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 04:45:31,431 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 04:45:31,432 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 04:45:31,432 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 04:45:31,432 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:45:30" (3/4) ... [2018-10-27 04:45:31,434 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-10-27 04:45:31,470 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_5f35eec0-d831-4a66-90cc-70bd3d3be415/bin-2019/uautomizer/witness.graphml [2018-10-27 04:45:31,471 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 04:45:31,471 INFO L168 Benchmark]: Toolchain (without parser) took 1328.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 183.0 MB). Free memory was 960.7 MB in the beginning and 1.1 GB in the end (delta: -157.2 MB). Peak memory consumption was 25.8 MB. Max. memory is 11.5 GB. [2018-10-27 04:45:31,473 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 04:45:31,473 INFO L168 Benchmark]: CACSL2BoogieTranslator took 168.40 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 950.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-27 04:45:31,474 INFO L168 Benchmark]: Boogie Preprocessor took 28.17 ms. Allocated memory is still 1.0 GB. Free memory was 950.0 MB in the beginning and 947.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-27 04:45:31,475 INFO L168 Benchmark]: RCFGBuilder took 460.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 183.0 MB). Free memory was 947.3 MB in the beginning and 1.2 GB in the end (delta: -220.4 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. [2018-10-27 04:45:31,475 INFO L168 Benchmark]: TraceAbstraction took 629.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 46.4 MB). Peak memory consumption was 46.4 MB. Max. memory is 11.5 GB. [2018-10-27 04:45:31,476 INFO L168 Benchmark]: Witness Printer took 39.26 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-10-27 04:45:31,480 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 168.40 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 950.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.17 ms. Allocated memory is still 1.0 GB. Free memory was 950.0 MB in the beginning and 947.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 460.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 183.0 MB). Free memory was 947.3 MB in the beginning and 1.2 GB in the end (delta: -220.4 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 629.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 46.4 MB). Peak memory consumption was 46.4 MB. Max. memory is 11.5 GB. * Witness Printer took 39.26 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: 3.4 MB). Peak memory consumption was 3.4 MB. 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 VAL [i=0] [L4] FCALL int a[10]; VAL [a={42:0}, i=0] [L5] COND TRUE i == 0 [L6] p = a VAL [a={42:0}, i=0, p={42:0}] [L3] i++ VAL [a={42:0}, i=1, p={42:0}] [L3] COND TRUE i < 2 VAL [i=1, p={42:0}] [L4] FCALL int a[10]; VAL [a={43:0}, i=1, p={42:0}] [L5] COND FALSE !(i == 0) VAL [a={43:0}, i=1, p={42:0}] [L8] FCALL p[0] = 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 22 locations, 3 error locations. UNSAFE Result, 0.5s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 56 SDtfs, 12 SDslu, 45 SDs, 0 SdLazy, 20 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 71 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 49 ConstructedInterpolants, 0 QuantifiedInterpolants, 1269 SizeOfPredicates, 1 NumberOfNonLiveVariables, 53 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...