./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_false-valid-deref-write.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_82ff569c-8aad-471f-a291-e60533cb4eca/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_82ff569c-8aad-471f-a291-e60533cb4eca/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_82ff569c-8aad-471f-a291-e60533cb4eca/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_82ff569c-8aad-471f-a291-e60533cb4eca/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_false-valid-deref-write.c -s /tmp/vcloud-vcloud-master/worker/working_dir_82ff569c-8aad-471f-a291-e60533cb4eca/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_82ff569c-8aad-471f-a291-e60533cb4eca/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 a6853fb9e064ccfef5e54a8bac94eb86beeed80f ................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.23-0cd3be1 [2018-11-28 12:17:48,710 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 12:17:48,711 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 12:17:48,720 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 12:17:48,720 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 12:17:48,720 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 12:17:48,721 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 12:17:48,723 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 12:17:48,724 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 12:17:48,724 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 12:17:48,725 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 12:17:48,725 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 12:17:48,726 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 12:17:48,726 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 12:17:48,727 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 12:17:48,728 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 12:17:48,728 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 12:17:48,729 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 12:17:48,731 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 12:17:48,732 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 12:17:48,733 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 12:17:48,733 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 12:17:48,735 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 12:17:48,735 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 12:17:48,735 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 12:17:48,736 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 12:17:48,737 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 12:17:48,737 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 12:17:48,738 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 12:17:48,739 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 12:17:48,739 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 12:17:48,739 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 12:17:48,739 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 12:17:48,740 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 12:17:48,740 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 12:17:48,741 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 12:17:48,741 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_82ff569c-8aad-471f-a291-e60533cb4eca/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-11-28 12:17:48,751 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 12:17:48,751 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 12:17:48,752 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 12:17:48,752 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 12:17:48,752 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 12:17:48,752 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 12:17:48,753 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 12:17:48,753 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 12:17:48,753 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 12:17:48,753 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 12:17:48,753 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 12:17:48,753 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 12:17:48,754 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 12:17:48,754 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-28 12:17:48,754 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-28 12:17:48,754 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-28 12:17:48,754 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 12:17:48,754 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 12:17:48,754 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 12:17:48,755 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 12:17:48,755 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 12:17:48,755 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 12:17:48,755 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 12:17:48,755 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 12:17:48,755 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 12:17:48,756 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 12:17:48,756 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 12:17:48,756 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 12:17:48,756 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_82ff569c-8aad-471f-a291-e60533cb4eca/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 -> a6853fb9e064ccfef5e54a8bac94eb86beeed80f [2018-11-28 12:17:48,779 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 12:17:48,787 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 12:17:48,789 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 12:17:48,790 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 12:17:48,790 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 12:17:48,790 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_82ff569c-8aad-471f-a291-e60533cb4eca/bin-2019/uautomizer/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_false-valid-deref-write.c [2018-11-28 12:17:48,825 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_82ff569c-8aad-471f-a291-e60533cb4eca/bin-2019/uautomizer/data/7350f6bae/138f559287764b709efd7b30763851bb/FLAGf04fc51a9 [2018-11-28 12:17:49,124 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 12:17:49,124 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_82ff569c-8aad-471f-a291-e60533cb4eca/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_false-valid-deref-write.c [2018-11-28 12:17:49,129 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_82ff569c-8aad-471f-a291-e60533cb4eca/bin-2019/uautomizer/data/7350f6bae/138f559287764b709efd7b30763851bb/FLAGf04fc51a9 [2018-11-28 12:17:49,138 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_82ff569c-8aad-471f-a291-e60533cb4eca/bin-2019/uautomizer/data/7350f6bae/138f559287764b709efd7b30763851bb [2018-11-28 12:17:49,140 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 12:17:49,140 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-28 12:17:49,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 12:17:49,141 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 12:17:49,144 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 12:17:49,145 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:17:49" (1/1) ... [2018-11-28 12:17:49,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3375cb2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:17:49, skipping insertion in model container [2018-11-28 12:17:49,147 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:17:49" (1/1) ... [2018-11-28 12:17:49,151 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 12:17:49,165 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 12:17:49,271 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 12:17:49,277 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 12:17:49,291 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 12:17:49,302 INFO L195 MainTranslator]: Completed translation [2018-11-28 12:17:49,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:17:49 WrapperNode [2018-11-28 12:17:49,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 12:17:49,303 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 12:17:49,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 12:17:49,303 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 12:17:49,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:17:49" (1/1) ... [2018-11-28 12:17:49,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:17:49" (1/1) ... [2018-11-28 12:17:49,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:17:49" (1/1) ... [2018-11-28 12:17:49,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:17:49" (1/1) ... [2018-11-28 12:17:49,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:17:49" (1/1) ... [2018-11-28 12:17:49,325 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:17:49" (1/1) ... [2018-11-28 12:17:49,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:17:49" (1/1) ... [2018-11-28 12:17:49,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 12:17:49,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 12:17:49,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 12:17:49,329 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 12:17:49,329 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:17:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_82ff569c-8aad-471f-a291-e60533cb4eca/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 [2018-11-28 12:17:49,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 12:17:49,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 12:17:49,398 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2018-11-28 12:17:49,398 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2018-11-28 12:17:49,398 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 12:17:49,398 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2018-11-28 12:17:49,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 12:17:49,399 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2018-11-28 12:17:49,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 12:17:49,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 12:17:49,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 12:17:49,399 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 12:17:49,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 12:17:49,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 12:17:49,578 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 12:17:49,578 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-28 12:17:49,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:17:49 BoogieIcfgContainer [2018-11-28 12:17:49,579 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 12:17:49,580 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 12:17:49,580 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 12:17:49,583 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 12:17:49,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 12:17:49" (1/3) ... [2018-11-28 12:17:49,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66434d74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:17:49, skipping insertion in model container [2018-11-28 12:17:49,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:17:49" (2/3) ... [2018-11-28 12:17:49,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66434d74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:17:49, skipping insertion in model container [2018-11-28 12:17:49,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:17:49" (3/3) ... [2018-11-28 12:17:49,586 INFO L112 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2_false-valid-deref-write.c [2018-11-28 12:17:49,593 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 12:17:49,597 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2018-11-28 12:17:49,607 INFO L257 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2018-11-28 12:17:49,621 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 12:17:49,622 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 12:17:49,622 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-28 12:17:49,622 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 12:17:49,622 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 12:17:49,622 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 12:17:49,622 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 12:17:49,622 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 12:17:49,623 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 12:17:49,632 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2018-11-28 12:17:49,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 12:17:49,638 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:17:49,639 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:17:49,640 INFO L423 AbstractCegarLoop]: === Iteration 1 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-11-28 12:17:49,644 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:17:49,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1403638412, now seen corresponding path program 1 times [2018-11-28 12:17:49,645 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:17:49,645 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:17:49,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:17:49,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:17:49,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:17:49,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:17:49,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:17:49,727 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:17:49,727 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 12:17:49,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 12:17:49,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 12:17:49,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 12:17:49,743 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 2 states. [2018-11-28 12:17:49,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:17:49,755 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2018-11-28 12:17:49,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 12:17:49,756 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-28 12:17:49,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:17:49,761 INFO L225 Difference]: With dead ends: 52 [2018-11-28 12:17:49,761 INFO L226 Difference]: Without dead ends: 49 [2018-11-28 12:17:49,763 INFO L631 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 [2018-11-28 12:17:49,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-11-28 12:17:49,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-11-28 12:17:49,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-11-28 12:17:49,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2018-11-28 12:17:49,785 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 10 [2018-11-28 12:17:49,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:17:49,786 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2018-11-28 12:17:49,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 12:17:49,786 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2018-11-28 12:17:49,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 12:17:49,786 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:17:49,787 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:17:49,787 INFO L423 AbstractCegarLoop]: === Iteration 2 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-11-28 12:17:49,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:17:49,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1403995904, now seen corresponding path program 1 times [2018-11-28 12:17:49,787 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:17:49,787 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:17:49,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:17:49,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:17:49,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:17:49,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:17:49,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:17:49,830 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:17:49,830 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 12:17:49,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 12:17:49,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 12:17:49,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 12:17:49,832 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand 3 states. [2018-11-28 12:17:49,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:17:49,878 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2018-11-28 12:17:49,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 12:17:49,878 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-28 12:17:49,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:17:49,880 INFO L225 Difference]: With dead ends: 56 [2018-11-28 12:17:49,880 INFO L226 Difference]: Without dead ends: 56 [2018-11-28 12:17:49,881 INFO L631 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 [2018-11-28 12:17:49,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-11-28 12:17:49,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 49. [2018-11-28 12:17:49,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-11-28 12:17:49,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2018-11-28 12:17:49,889 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 10 [2018-11-28 12:17:49,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:17:49,889 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2018-11-28 12:17:49,890 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 12:17:49,890 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2018-11-28 12:17:49,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 12:17:49,890 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:17:49,890 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:17:49,890 INFO L423 AbstractCegarLoop]: === Iteration 3 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-11-28 12:17:49,891 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:17:49,891 INFO L82 PathProgramCache]: Analyzing trace with hash -571487811, now seen corresponding path program 1 times [2018-11-28 12:17:49,891 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:17:49,891 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:17:49,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:17:49,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:17:49,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:17:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:17:49,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:17:49,976 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:17:49,977 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 12:17:49,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 12:17:49,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 12:17:49,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 12:17:49,977 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 5 states. [2018-11-28 12:17:50,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:17:50,075 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2018-11-28 12:17:50,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 12:17:50,076 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-11-28 12:17:50,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:17:50,076 INFO L225 Difference]: With dead ends: 47 [2018-11-28 12:17:50,076 INFO L226 Difference]: Without dead ends: 47 [2018-11-28 12:17:50,077 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 12:17:50,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-11-28 12:17:50,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-11-28 12:17:50,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-11-28 12:17:50,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2018-11-28 12:17:50,080 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 11 [2018-11-28 12:17:50,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:17:50,080 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2018-11-28 12:17:50,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 12:17:50,080 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2018-11-28 12:17:50,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 12:17:50,080 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:17:50,080 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:17:50,080 INFO L423 AbstractCegarLoop]: === Iteration 4 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-11-28 12:17:50,081 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:17:50,081 INFO L82 PathProgramCache]: Analyzing trace with hash -571487810, now seen corresponding path program 1 times [2018-11-28 12:17:50,081 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:17:50,081 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:17:50,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:17:50,081 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:17:50,081 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:17:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:17:50,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:17:50,135 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:17:50,136 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 12:17:50,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 12:17:50,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 12:17:50,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 12:17:50,136 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 5 states. [2018-11-28 12:17:50,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:17:50,288 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2018-11-28 12:17:50,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 12:17:50,289 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-11-28 12:17:50,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:17:50,292 INFO L225 Difference]: With dead ends: 72 [2018-11-28 12:17:50,292 INFO L226 Difference]: Without dead ends: 72 [2018-11-28 12:17:50,292 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 12:17:50,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-11-28 12:17:50,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 56. [2018-11-28 12:17:50,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-11-28 12:17:50,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2018-11-28 12:17:50,299 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 11 [2018-11-28 12:17:50,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:17:50,299 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2018-11-28 12:17:50,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 12:17:50,299 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2018-11-28 12:17:50,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-28 12:17:50,300 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:17:50,300 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:17:50,300 INFO L423 AbstractCegarLoop]: === Iteration 5 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-11-28 12:17:50,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:17:50,300 INFO L82 PathProgramCache]: Analyzing trace with hash -536252953, now seen corresponding path program 1 times [2018-11-28 12:17:50,301 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:17:50,301 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:17:50,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:17:50,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:17:50,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:17:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:17:50,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:17:50,324 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:17:50,324 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 12:17:50,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 12:17:50,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 12:17:50,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 12:17:50,325 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 3 states. [2018-11-28 12:17:50,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:17:50,355 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2018-11-28 12:17:50,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 12:17:50,355 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-11-28 12:17:50,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:17:50,356 INFO L225 Difference]: With dead ends: 55 [2018-11-28 12:17:50,356 INFO L226 Difference]: Without dead ends: 55 [2018-11-28 12:17:50,356 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 12:17:50,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-11-28 12:17:50,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-11-28 12:17:50,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-11-28 12:17:50,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2018-11-28 12:17:50,360 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 12 [2018-11-28 12:17:50,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:17:50,360 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2018-11-28 12:17:50,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 12:17:50,360 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2018-11-28 12:17:50,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-28 12:17:50,360 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:17:50,360 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:17:50,361 INFO L423 AbstractCegarLoop]: === Iteration 6 === [barErr1REQUIRES_VIOLATION, barErr0REQUIRES_VIOLATION, fooErr0REQUIRES_VIOLATION, fooErr1REQUIRES_VIOLATION, fooErr3REQUIRES_VIOLATION, fooErr2REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-11-28 12:17:50,361 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:17:50,361 INFO L82 PathProgramCache]: Analyzing trace with hash -536252952, now seen corresponding path program 1 times [2018-11-28 12:17:50,361 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:17:50,361 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:17:50,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:17:50,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:17:50,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:17:50,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:17:50,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:17:50,401 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 12:17:50,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 12:17:50 BoogieIcfgContainer [2018-11-28 12:17:50,415 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 12:17:50,415 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 12:17:50,415 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 12:17:50,416 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 12:17:50,416 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:17:49" (3/4) ... [2018-11-28 12:17:50,417 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-28 12:17:50,441 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_82ff569c-8aad-471f-a291-e60533cb4eca/bin-2019/uautomizer/witness.graphml [2018-11-28 12:17:50,441 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 12:17:50,442 INFO L168 Benchmark]: Toolchain (without parser) took 1301.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 953.3 MB in the beginning and 1.0 GB in the end (delta: -83.0 MB). Peak memory consumption was 69.1 MB. Max. memory is 11.5 GB. [2018-11-28 12:17:50,443 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 12:17:50,443 INFO L168 Benchmark]: CACSL2BoogieTranslator took 161.25 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 12:17:50,443 INFO L168 Benchmark]: Boogie Preprocessor took 25.62 ms. Allocated memory is still 1.0 GB. Free memory was 942.6 MB in the beginning and 939.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-28 12:17:50,444 INFO L168 Benchmark]: RCFGBuilder took 250.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -187.2 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. [2018-11-28 12:17:50,444 INFO L168 Benchmark]: TraceAbstraction took 835.64 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: 87.4 MB). Peak memory consumption was 87.4 MB. Max. memory is 11.5 GB. [2018-11-28 12:17:50,444 INFO L168 Benchmark]: Witness Printer took 25.84 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 12:17:50,446 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 161.25 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.62 ms. Allocated memory is still 1.0 GB. Free memory was 942.6 MB in the beginning and 939.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 250.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -187.2 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 835.64 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: 87.4 MB). Peak memory consumption was 87.4 MB. Max. memory is 11.5 GB. * Witness Printer took 25.84 ms. Allocated memory is still 1.2 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: 23]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L32] int i, b[100]; [L33] i = 0 VAL [b={404:0}, i=0] [L33] COND TRUE i < 100 VAL [b={404:0}, i=0] [L34] CALL foo(i, b, i + 1) VAL [\old(n)=0, \old(size)=1, b={404:0}] [L21] int a[n], i; [L22] i = 0 VAL [\old(n)=0, \old(size)=1, a={403:0}, b={404:0}, b={404:0}, i=0, n=0, size=1] [L22] COND TRUE i < size VAL [\old(n)=0, \old(size)=1, a={403:0}, b={404:0}, b={404:0}, i=0, n=0, size=1] [L23] EXPR b[i] VAL [\old(n)=0, \old(size)=1, a={403:0}, b={404:0}, b={404:0}, b[i]=402, i=0, n=0, size=1] [L23] a[i] = b[i] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 52 locations, 11 error locations. UNSAFE Result, 0.7s OverallTime, 6 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 227 SDtfs, 75 SDslu, 214 SDs, 0 SdLazy, 169 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=4, 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, 5 MinimizatonAttempts, 23 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 49 ConstructedInterpolants, 0 QuantifiedInterpolants, 1443 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...