./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7118b534-beda-463d-b6c7-4bb09f59090e/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_7118b534-beda-463d-b6c7-4bb09f59090e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7118b534-beda-463d-b6c7-4bb09f59090e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7118b534-beda-463d-b6c7-4bb09f59090e/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7118b534-beda-463d-b6c7-4bb09f59090e/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7118b534-beda-463d-b6c7-4bb09f59090e/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 932f76685ed1816d93a388d0ab1addae9c51483a ..................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 22:06:20,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 22:06:20,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 22:06:20,647 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 22:06:20,647 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 22:06:20,648 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 22:06:20,650 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 22:06:20,659 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 22:06:20,663 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 22:06:20,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 22:06:20,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 22:06:20,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 22:06:20,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 22:06:20,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 22:06:20,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 22:06:20,675 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 22:06:20,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 22:06:20,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 22:06:20,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 22:06:20,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 22:06:20,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 22:06:20,686 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 22:06:20,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 22:06:20,689 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 22:06:20,691 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 22:06:20,691 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 22:06:20,692 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 22:06:20,693 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 22:06:20,693 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 22:06:20,694 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 22:06:20,695 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 22:06:20,695 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 22:06:20,696 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 22:06:20,696 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 22:06:20,698 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 22:06:20,698 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 22:06:20,698 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 22:06:20,699 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 22:06:20,699 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 22:06:20,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 22:06:20,700 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 22:06:20,701 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7118b534-beda-463d-b6c7-4bb09f59090e/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-15 22:06:20,725 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 22:06:20,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 22:06:20,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 22:06:20,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 22:06:20,726 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 22:06:20,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 22:06:20,727 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 22:06:20,727 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 22:06:20,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 22:06:20,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 22:06:20,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 22:06:20,728 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-15 22:06:20,728 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-15 22:06:20,728 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-15 22:06:20,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 22:06:20,729 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 22:06:20,729 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 22:06:20,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 22:06:20,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 22:06:20,729 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 22:06:20,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 22:06:20,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 22:06:20,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 22:06:20,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 22:06:20,730 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 22:06:20,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 22:06:20,731 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7118b534-beda-463d-b6c7-4bb09f59090e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 932f76685ed1816d93a388d0ab1addae9c51483a [2019-11-15 22:06:20,771 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 22:06:20,783 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 22:06:20,787 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 22:06:20,788 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 22:06:20,788 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 22:06:20,789 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7118b534-beda-463d-b6c7-4bb09f59090e/bin/uautomizer/../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2019-11-15 22:06:20,848 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7118b534-beda-463d-b6c7-4bb09f59090e/bin/uautomizer/data/a81aede3f/75462706e217496cb00d0de1f1d75d7e/FLAG4f7b6e2e3 [2019-11-15 22:06:21,236 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 22:06:21,237 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7118b534-beda-463d-b6c7-4bb09f59090e/sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2019-11-15 22:06:21,242 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7118b534-beda-463d-b6c7-4bb09f59090e/bin/uautomizer/data/a81aede3f/75462706e217496cb00d0de1f1d75d7e/FLAG4f7b6e2e3 [2019-11-15 22:06:21,676 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7118b534-beda-463d-b6c7-4bb09f59090e/bin/uautomizer/data/a81aede3f/75462706e217496cb00d0de1f1d75d7e [2019-11-15 22:06:21,678 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 22:06:21,679 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-15 22:06:21,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 22:06:21,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 22:06:21,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 22:06:21,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:06:21" (1/1) ... [2019-11-15 22:06:21,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@314722d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:06:21, skipping insertion in model container [2019-11-15 22:06:21,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 10:06:21" (1/1) ... [2019-11-15 22:06:21,692 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 22:06:21,705 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 22:06:21,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:06:21,926 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 22:06:21,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 22:06:21,957 INFO L192 MainTranslator]: Completed translation [2019-11-15 22:06:21,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:06:21 WrapperNode [2019-11-15 22:06:21,958 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 22:06:21,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 22:06:21,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 22:06:21,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 22:06:21,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:06:21" (1/1) ... [2019-11-15 22:06:21,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:06:21" (1/1) ... [2019-11-15 22:06:21,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:06:21" (1/1) ... [2019-11-15 22:06:21,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:06:21" (1/1) ... [2019-11-15 22:06:21,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:06:21" (1/1) ... [2019-11-15 22:06:21,989 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:06:21" (1/1) ... [2019-11-15 22:06:21,990 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:06:21" (1/1) ... [2019-11-15 22:06:21,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 22:06:21,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 22:06:21,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 22:06:21,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 22:06:21,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:06:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7118b534-beda-463d-b6c7-4bb09f59090e/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 22:06:22,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-15 22:06:22,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 22:06:22,069 INFO L138 BoogieDeclarations]: Found implementation of procedure areNatural [2019-11-15 22:06:22,069 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-15 22:06:22,069 INFO L130 BoogieDeclarations]: Found specification of procedure areNatural [2019-11-15 22:06:22,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 22:06:22,070 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-15 22:06:22,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 22:06:22,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-15 22:06:22,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 22:06:22,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-15 22:06:22,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 22:06:22,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 22:06:22,322 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 22:06:22,322 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-15 22:06:22,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:06:22 BoogieIcfgContainer [2019-11-15 22:06:22,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 22:06:22,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 22:06:22,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 22:06:22,328 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 22:06:22,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 10:06:21" (1/3) ... [2019-11-15 22:06:22,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@213f79ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:06:22, skipping insertion in model container [2019-11-15 22:06:22,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 10:06:21" (2/3) ... [2019-11-15 22:06:22,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@213f79ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 10:06:22, skipping insertion in model container [2019-11-15 22:06:22,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:06:22" (3/3) ... [2019-11-15 22:06:22,331 INFO L109 eAbstractionObserver]: Analyzing ICFG naturalNumbers1.c [2019-11-15 22:06:22,340 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 22:06:22,347 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-15 22:06:22,358 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-15 22:06:22,382 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 22:06:22,382 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-15 22:06:22,382 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 22:06:22,383 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 22:06:22,383 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 22:06:22,383 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 22:06:22,384 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 22:06:22,384 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 22:06:22,401 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-11-15 22:06:22,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-15 22:06:22,410 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:06:22,411 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:06:22,415 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr1REQUIRES_VIOLATION, areNaturalErr0REQUIRES_VIOLATION]=== [2019-11-15 22:06:22,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:06:22,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1845664052, now seen corresponding path program 1 times [2019-11-15 22:06:22,428 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:06:22,429 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444140056] [2019-11-15 22:06:22,429 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:06:22,429 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:06:22,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:06:22,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:06:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:06:22,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:06:22,714 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444140056] [2019-11-15 22:06:22,715 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:06:22,715 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 22:06:22,715 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928470392] [2019-11-15 22:06:22,730 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 22:06:22,730 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:06:22,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 22:06:22,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-15 22:06:22,745 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 6 states. [2019-11-15 22:06:22,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:06:22,896 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2019-11-15 22:06:22,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 22:06:22,898 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-11-15 22:06:22,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:06:22,906 INFO L225 Difference]: With dead ends: 21 [2019-11-15 22:06:22,906 INFO L226 Difference]: Without dead ends: 18 [2019-11-15 22:06:22,908 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-15 22:06:22,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-15 22:06:22,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-15 22:06:22,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-15 22:06:22,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-11-15 22:06:22,942 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 10 [2019-11-15 22:06:22,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:06:22,943 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-11-15 22:06:22,943 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 22:06:22,944 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-11-15 22:06:22,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-15 22:06:22,945 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:06:22,945 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:06:22,948 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr1REQUIRES_VIOLATION, areNaturalErr0REQUIRES_VIOLATION]=== [2019-11-15 22:06:22,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:06:22,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1845664051, now seen corresponding path program 1 times [2019-11-15 22:06:22,949 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:06:22,950 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373436361] [2019-11-15 22:06:22,950 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:06:22,951 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:06:22,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:06:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:06:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:06:23,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:06:23,069 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373436361] [2019-11-15 22:06:23,070 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:06:23,070 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 22:06:23,070 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079920428] [2019-11-15 22:06:23,071 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 22:06:23,072 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:06:23,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 22:06:23,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-15 22:06:23,073 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 6 states. [2019-11-15 22:06:23,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:06:23,202 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2019-11-15 22:06:23,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 22:06:23,203 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-11-15 22:06:23,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:06:23,206 INFO L225 Difference]: With dead ends: 23 [2019-11-15 22:06:23,206 INFO L226 Difference]: Without dead ends: 23 [2019-11-15 22:06:23,207 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-15 22:06:23,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-15 22:06:23,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2019-11-15 22:06:23,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-15 22:06:23,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2019-11-15 22:06:23,212 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 10 [2019-11-15 22:06:23,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:06:23,212 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2019-11-15 22:06:23,213 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 22:06:23,213 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2019-11-15 22:06:23,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-15 22:06:23,213 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:06:23,214 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:06:23,214 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr1REQUIRES_VIOLATION, areNaturalErr0REQUIRES_VIOLATION]=== [2019-11-15 22:06:23,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:06:23,214 INFO L82 PathProgramCache]: Analyzing trace with hash -6453934, now seen corresponding path program 1 times [2019-11-15 22:06:23,215 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:06:23,215 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730853378] [2019-11-15 22:06:23,215 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:06:23,215 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:06:23,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:06:23,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:06:23,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:06:23,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:06:23,370 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730853378] [2019-11-15 22:06:23,370 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384285640] [2019-11-15 22:06:23,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7118b534-beda-463d-b6c7-4bb09f59090e/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:06:23,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:06:23,416 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-15 22:06:23,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 22:06:23,524 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-15 22:06:23,527 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-15 22:06:23,534 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 22:06:23,534 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-15 22:06:23,534 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-11-15 22:06:23,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:06:23,554 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-15 22:06:23,554 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2019-11-15 22:06:23,554 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121306982] [2019-11-15 22:06:23,555 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 22:06:23,555 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:06:23,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 22:06:23,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-11-15 22:06:23,556 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 6 states. [2019-11-15 22:06:23,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:06:23,657 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2019-11-15 22:06:23,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 22:06:23,657 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2019-11-15 22:06:23,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:06:23,658 INFO L225 Difference]: With dead ends: 16 [2019-11-15 22:06:23,658 INFO L226 Difference]: Without dead ends: 16 [2019-11-15 22:06:23,659 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2019-11-15 22:06:23,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-15 22:06:23,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-15 22:06:23,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-15 22:06:23,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2019-11-15 22:06:23,661 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 13 [2019-11-15 22:06:23,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:06:23,662 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2019-11-15 22:06:23,662 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 22:06:23,662 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2019-11-15 22:06:23,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-15 22:06:23,662 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 22:06:23,663 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 22:06:23,863 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 22:06:23,864 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr1REQUIRES_VIOLATION, areNaturalErr0REQUIRES_VIOLATION]=== [2019-11-15 22:06:23,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 22:06:23,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1907814666, now seen corresponding path program 1 times [2019-11-15 22:06:23,864 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 22:06:23,866 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298213810] [2019-11-15 22:06:23,866 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:06:23,866 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 22:06:23,866 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 22:06:23,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:06:23,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:06:23,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 22:06:23,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 22:06:23,980 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298213810] [2019-11-15 22:06:23,980 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 22:06:23,981 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 22:06:23,981 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404518610] [2019-11-15 22:06:23,981 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 22:06:23,982 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 22:06:23,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 22:06:23,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-15 22:06:23,983 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand 5 states. [2019-11-15 22:06:24,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 22:06:24,011 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2019-11-15 22:06:24,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 22:06:24,012 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-11-15 22:06:24,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 22:06:24,012 INFO L225 Difference]: With dead ends: 15 [2019-11-15 22:06:24,012 INFO L226 Difference]: Without dead ends: 0 [2019-11-15 22:06:24,013 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-15 22:06:24,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-15 22:06:24,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-15 22:06:24,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-15 22:06:24,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 22:06:24,014 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2019-11-15 22:06:24,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 22:06:24,014 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 22:06:24,014 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 22:06:24,014 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-15 22:06:24,014 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-15 22:06:24,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 10:06:24 BoogieIcfgContainer [2019-11-15 22:06:24,020 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 22:06:24,020 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 22:06:24,020 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 22:06:24,021 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 22:06:24,021 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 10:06:22" (3/4) ... [2019-11-15 22:06:24,042 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-15 22:06:24,048 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2019-11-15 22:06:24,048 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2019-11-15 22:06:24,049 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure areNatural [2019-11-15 22:06:24,052 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2019-11-15 22:06:24,052 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-15 22:06:24,053 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-15 22:06:24,053 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-15 22:06:24,053 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-15 22:06:24,098 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7118b534-beda-463d-b6c7-4bb09f59090e/bin/uautomizer/witness.graphml [2019-11-15 22:06:24,098 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 22:06:24,099 INFO L168 Benchmark]: Toolchain (without parser) took 2420.37 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.5 MB). Free memory was 950.1 MB in the beginning and 952.5 MB in the end (delta: -2.4 MB). Peak memory consumption was 106.2 MB. Max. memory is 11.5 GB. [2019-11-15 22:06:24,100 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:06:24,100 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.53 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.5 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -147.8 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. [2019-11-15 22:06:24,101 INFO L168 Benchmark]: Boogie Preprocessor took 34.21 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 22:06:24,101 INFO L168 Benchmark]: RCFGBuilder took 330.71 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2019-11-15 22:06:24,102 INFO L168 Benchmark]: TraceAbstraction took 1695.46 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 959.4 MB in the end (delta: 116.6 MB). Peak memory consumption was 116.6 MB. Max. memory is 11.5 GB. [2019-11-15 22:06:24,102 INFO L168 Benchmark]: Witness Printer took 77.88 ms. Allocated memory is still 1.1 GB. Free memory was 959.4 MB in the beginning and 952.5 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-11-15 22:06:24,104 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 278.53 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.5 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -147.8 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 34.21 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 330.71 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1695.46 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 959.4 MB in the end (delta: 116.6 MB). Peak memory consumption was 116.6 MB. Max. memory is 11.5 GB. * Witness Printer took 77.88 ms. Allocated memory is still 1.1 GB. Free memory was 959.4 MB in the beginning and 952.5 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 4]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 4]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 3 error locations. Result: SAFE, OverallTime: 1.6s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 43 SDtfs, 70 SDslu, 67 SDs, 0 SdLazy, 128 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 3632 SizeOfPredicates, 6 NumberOfNonLiveVariables, 77 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 2/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...