./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_27dd5c31-16ce-4cf2-9ad0-6fe945372a1a/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_27dd5c31-16ce-4cf2-9ad0-6fe945372a1a/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_27dd5c31-16ce-4cf2-9ad0-6fe945372a1a/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_27dd5c31-16ce-4cf2-9ad0-6fe945372a1a/bin-2019/ukojak/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_27dd5c31-16ce-4cf2-9ad0-6fe945372a1a/bin-2019/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_27dd5c31-16ce-4cf2-9ad0-6fe945372a1a/bin-2019/ukojak --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 Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cbb495583d601bf9f19d9da57531415381b22d5a .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-02 22:56:25,600 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 22:56:25,601 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 22:56:25,607 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 22:56:25,607 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 22:56:25,608 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 22:56:25,609 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 22:56:25,610 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 22:56:25,610 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 22:56:25,611 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 22:56:25,611 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 22:56:25,611 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 22:56:25,612 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 22:56:25,612 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 22:56:25,613 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 22:56:25,614 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 22:56:25,614 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 22:56:25,615 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 22:56:25,616 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 22:56:25,617 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 22:56:25,617 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 22:56:25,618 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 22:56:25,619 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 22:56:25,619 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 22:56:25,619 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 22:56:25,620 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 22:56:25,620 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 22:56:25,621 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 22:56:25,621 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 22:56:25,622 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 22:56:25,622 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 22:56:25,622 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 22:56:25,623 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 22:56:25,623 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 22:56:25,623 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 22:56:25,624 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 22:56:25,624 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_27dd5c31-16ce-4cf2-9ad0-6fe945372a1a/bin-2019/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2018-12-02 22:56:25,631 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 22:56:25,631 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 22:56:25,632 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 22:56:25,632 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 22:56:25,632 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 22:56:25,632 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 22:56:25,632 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-02 22:56:25,632 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 22:56:25,632 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 22:56:25,632 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 22:56:25,633 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-02 22:56:25,633 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-02 22:56:25,633 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-02 22:56:25,633 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 22:56:25,633 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 22:56:25,633 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 22:56:25,633 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-12-02 22:56:25,634 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-12-02 22:56:25,634 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 22:56:25,634 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 22:56:25,634 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-12-02 22:56:25,634 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 22:56:25,634 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 22:56:25,634 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-12-02 22:56:25,634 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 22:56:25,635 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_27dd5c31-16ce-4cf2-9ad0-6fe945372a1a/bin-2019/ukojak 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 -> Kojak 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 -> cbb495583d601bf9f19d9da57531415381b22d5a [2018-12-02 22:56:25,652 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 22:56:25,660 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 22:56:25,662 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 22:56:25,664 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 22:56:25,664 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 22:56:25,664 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_27dd5c31-16ce-4cf2-9ad0-6fe945372a1a/bin-2019/ukojak/../../sv-benchmarks/c/array-memsafety/openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-12-02 22:56:25,702 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_27dd5c31-16ce-4cf2-9ad0-6fe945372a1a/bin-2019/ukojak/data/9594f67c5/3a12ea152d1f4535b333ffeff923b264/FLAGb215ae8bb [2018-12-02 22:56:26,177 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 22:56:26,177 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_27dd5c31-16ce-4cf2-9ad0-6fe945372a1a/sv-benchmarks/c/array-memsafety/openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-12-02 22:56:26,183 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_27dd5c31-16ce-4cf2-9ad0-6fe945372a1a/bin-2019/ukojak/data/9594f67c5/3a12ea152d1f4535b333ffeff923b264/FLAGb215ae8bb [2018-12-02 22:56:26,191 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_27dd5c31-16ce-4cf2-9ad0-6fe945372a1a/bin-2019/ukojak/data/9594f67c5/3a12ea152d1f4535b333ffeff923b264 [2018-12-02 22:56:26,193 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 22:56:26,193 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 22:56:26,194 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 22:56:26,194 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 22:56:26,196 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 22:56:26,196 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:56:26" (1/1) ... [2018-12-02 22:56:26,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14e9f722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:56:26, skipping insertion in model container [2018-12-02 22:56:26,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:56:26" (1/1) ... [2018-12-02 22:56:26,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 22:56:26,220 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 22:56:26,356 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 22:56:26,362 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 22:56:26,420 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 22:56:26,440 INFO L195 MainTranslator]: Completed translation [2018-12-02 22:56:26,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:56:26 WrapperNode [2018-12-02 22:56:26,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 22:56:26,441 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 22:56:26,441 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 22:56:26,441 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 22:56:26,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:56:26" (1/1) ... [2018-12-02 22:56:26,453 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:56:26" (1/1) ... [2018-12-02 22:56:26,466 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 22:56:26,466 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 22:56:26,466 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 22:56:26,466 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 22:56:26,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:56:26" (1/1) ... [2018-12-02 22:56:26,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:56:26" (1/1) ... [2018-12-02 22:56:26,474 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:56:26" (1/1) ... [2018-12-02 22:56:26,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:56:26" (1/1) ... [2018-12-02 22:56:26,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:56:26" (1/1) ... [2018-12-02 22:56:26,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:56:26" (1/1) ... [2018-12-02 22:56:26,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:56:26" (1/1) ... [2018-12-02 22:56:26,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 22:56:26,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 22:56:26,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 22:56:26,482 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 22:56:26,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:56:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_27dd5c31-16ce-4cf2-9ad0-6fe945372a1a/bin-2019/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (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:10000 [2018-12-02 22:56:26,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 22:56:26,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-02 22:56:26,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-02 22:56:26,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 22:56:26,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 22:56:26,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 22:56:26,727 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 22:56:26,727 INFO L280 CfgBuilder]: Removed 7 assue(true) statements. [2018-12-02 22:56:26,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:56:26 BoogieIcfgContainer [2018-12-02 22:56:26,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 22:56:26,728 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-12-02 22:56:26,728 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-12-02 22:56:26,735 INFO L276 PluginConnector]: CodeCheck initialized [2018-12-02 22:56:26,735 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:56:26" (1/1) ... [2018-12-02 22:56:26,743 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 22:56:26,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 22:56:26,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 28 states and 30 transitions. [2018-12-02 22:56:26,765 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2018-12-02 22:56:26,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2018-12-02 22:56:26,767 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 22:56:26,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:56:26,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 22:56:26,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 22:56:26,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 27 states and 29 transitions. [2018-12-02 22:56:26,887 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-12-02 22:56:26,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2018-12-02 22:56:26,888 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 22:56:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:56:26,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 22:56:26,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 22:56:26,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 26 states and 28 transitions. [2018-12-02 22:56:26,969 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2018-12-02 22:56:26,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-02 22:56:26,971 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 22:56:26,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:56:26,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 22:56:27,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 22:56:27,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 25 states and 27 transitions. [2018-12-02 22:56:27,050 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2018-12-02 22:56:27,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-02 22:56:27,050 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 22:56:27,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:56:27,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 22:56:27,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 22:56:27,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 24 states and 26 transitions. [2018-12-02 22:56:27,248 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2018-12-02 22:56:27,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-12-02 22:56:27,248 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 22:56:27,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:56:27,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 22:56:27,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 22:56:27,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 25 states and 27 transitions. [2018-12-02 22:56:27,379 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2018-12-02 22:56:27,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-12-02 22:56:27,379 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 22:56:27,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:56:27,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 22:56:27,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 22:56:27,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 26 states and 29 transitions. [2018-12-02 22:56:27,667 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2018-12-02 22:56:27,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-12-02 22:56:27,667 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 22:56:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:56:27,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 22:56:27,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 22:56:27,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 28 states and 33 transitions. [2018-12-02 22:56:27,858 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2018-12-02 22:56:27,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-12-02 22:56:27,858 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 22:56:27,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:56:27,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 22:56:28,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 22:56:28,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 30 states and 37 transitions. [2018-12-02 22:56:28,266 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2018-12-02 22:56:28,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-02 22:56:28,266 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 22:56:28,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:56:28,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 22:56:28,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 22:56:28,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 32 states and 41 transitions. [2018-12-02 22:56:28,381 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2018-12-02 22:56:28,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-02 22:56:28,381 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 22:56:28,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:56:28,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 22:56:28,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 22:56:28,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 34 states and 44 transitions. [2018-12-02 22:56:28,968 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2018-12-02 22:56:28,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-02 22:56:28,969 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 22:56:28,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:56:29,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 22:56:29,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 22:56:29,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 35 states and 45 transitions. [2018-12-02 22:56:29,078 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 45 transitions. [2018-12-02 22:56:29,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-12-02 22:56:29,078 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 22:56:29,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:56:29,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 22:56:29,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 22:56:29,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 38 states and 50 transitions. [2018-12-02 22:56:29,587 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 50 transitions. [2018-12-02 22:56:29,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-02 22:56:29,588 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 22:56:29,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:56:29,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 22:56:30,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 22:56:30,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 41 states and 56 transitions. [2018-12-02 22:56:30,640 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 56 transitions. [2018-12-02 22:56:30,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-02 22:56:30,641 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 22:56:30,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:56:30,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 22:56:33,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 22:56:33,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 44 states and 61 transitions. [2018-12-02 22:56:33,239 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 61 transitions. [2018-12-02 22:56:33,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-02 22:56:33,240 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 22:56:33,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:56:33,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 22:56:36,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 22:56:36,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 50 states and 73 transitions. [2018-12-02 22:56:36,138 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 73 transitions. [2018-12-02 22:56:36,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-02 22:56:36,139 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 22:56:36,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:56:36,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 22:56:36,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 22:56:36,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 51 states and 75 transitions. [2018-12-02 22:56:36,728 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 75 transitions. [2018-12-02 22:56:36,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-02 22:56:36,728 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 22:56:36,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:56:36,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 22:56:39,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 22:56:39,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 58 states and 89 transitions. [2018-12-02 22:56:39,803 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 89 transitions. [2018-12-02 22:56:39,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-02 22:56:39,803 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 22:56:39,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:56:39,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 22:56:41,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 22:56:41,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 60 states and 94 transitions. [2018-12-02 22:56:41,615 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 94 transitions. [2018-12-02 22:56:41,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-02 22:56:41,615 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 22:56:41,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:56:41,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 22:56:42,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 22:56:42,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 63 states and 99 transitions. [2018-12-02 22:56:42,869 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 99 transitions. [2018-12-02 22:56:42,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-02 22:56:42,869 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 22:56:42,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:56:43,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 22:56:52,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 22:56:52,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 70 states and 113 transitions. [2018-12-02 22:56:52,244 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 113 transitions. [2018-12-02 22:56:52,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-02 22:56:52,245 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 22:56:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:56:52,253 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 22:56:52,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 22:56:52,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 68 states and 109 transitions. [2018-12-02 22:56:52,820 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 109 transitions. [2018-12-02 22:56:52,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-02 22:56:52,821 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 22:56:52,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:56:53,647 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 22:56:56,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 22:56:56,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 70 states and 111 transitions. [2018-12-02 22:56:56,324 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 111 transitions. [2018-12-02 22:56:56,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-02 22:56:56,324 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 22:56:56,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:56:56,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 22:56:56,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 22:56:56,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 70 states and 110 transitions. [2018-12-02 22:56:56,721 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 110 transitions. [2018-12-02 22:56:56,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-02 22:56:56,721 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 22:56:56,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:56:56,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-12-02 22:56:57,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 22:56:57,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 71 states and 112 transitions. [2018-12-02 22:56:57,151 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 112 transitions. [2018-12-02 22:56:57,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-02 22:56:57,152 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 22:56:57,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:56:57,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 22:57:00,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 22:57:00,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 74 states and 120 transitions. [2018-12-02 22:57:00,942 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 120 transitions. [2018-12-02 22:57:00,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-02 22:57:00,943 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 22:57:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:57:00,951 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 22:57:01,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 22:57:01,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 73 states and 116 transitions. [2018-12-02 22:57:01,550 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 116 transitions. [2018-12-02 22:57:01,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-02 22:57:01,550 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 22:57:01,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:57:01,559 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 22:57:02,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 22:57:02,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 74 states and 117 transitions. [2018-12-02 22:57:02,257 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 117 transitions. [2018-12-02 22:57:02,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-02 22:57:02,257 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 22:57:02,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:57:03,799 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 22:57:14,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 22:57:14,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 83 states and 144 transitions. [2018-12-02 22:57:14,952 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 144 transitions. [2018-12-02 22:57:14,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-02 22:57:14,952 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 22:57:14,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:57:14,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-12-02 22:57:17,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 22:57:17,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 86 states and 148 transitions. [2018-12-02 22:57:17,177 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 148 transitions. [2018-12-02 22:57:17,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-02 22:57:17,178 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 22:57:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:57:19,238 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 22:57:30,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 22:57:30,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 95 states and 174 transitions. [2018-12-02 22:57:30,656 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 174 transitions. [2018-12-02 22:57:30,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-02 22:57:30,656 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 22:57:30,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:57:30,667 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-12-02 22:57:31,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 22:57:31,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 96 states and 175 transitions. [2018-12-02 22:57:31,412 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 175 transitions. [2018-12-02 22:57:31,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-02 22:57:31,412 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 22:57:31,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:57:31,427 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-12-02 22:57:32,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 22:57:32,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 97 states and 177 transitions. [2018-12-02 22:57:32,303 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 177 transitions. [2018-12-02 22:57:32,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-02 22:57:32,303 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 22:57:32,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:57:34,040 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-12-02 22:57:46,260 WARN L180 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2018-12-02 22:57:54,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 22:57:54,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 110 states and 214 transitions. [2018-12-02 22:57:54,562 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 214 transitions. [2018-12-02 22:57:54,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-02 22:57:54,563 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 22:57:54,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:57:54,604 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-12-02 22:57:58,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 22:57:58,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 113 states and 217 transitions. [2018-12-02 22:57:58,981 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 217 transitions. [2018-12-02 22:57:58,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-02 22:57:58,982 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 22:57:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:57:59,026 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-12-02 22:57:59,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 22:57:59,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 114 states and 219 transitions. [2018-12-02 22:57:59,976 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 219 transitions. [2018-12-02 22:57:59,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-02 22:57:59,976 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 22:57:59,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:58:02,711 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-12-02 22:58:08,588 WARN L180 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2018-12-02 22:58:17,584 WARN L180 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2018-12-02 22:58:23,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 22:58:23,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 127 states and 259 transitions. [2018-12-02 22:58:23,224 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 259 transitions. [2018-12-02 22:58:23,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-02 22:58:23,225 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 22:58:23,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:58:24,161 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-12-02 22:58:27,717 WARN L180 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2018-12-02 22:58:31,205 WARN L180 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2018-12-02 22:58:31,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 22:58:31,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 131 states and 269 transitions. [2018-12-02 22:58:31,888 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 269 transitions. [2018-12-02 22:58:31,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-02 22:58:31,889 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 22:58:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:58:32,756 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-12-02 22:58:37,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 22:58:37,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 132 states and 268 transitions. [2018-12-02 22:58:37,351 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 268 transitions. [2018-12-02 22:58:37,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-02 22:58:37,351 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-02 22:58:37,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 22:58:41,827 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 13 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 22:58:57,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-02 22:58:57,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 25 states and 33 transitions. [2018-12-02 22:58:57,463 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2018-12-02 22:58:57,463 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-02 22:58:57,464 WARN L428 CodeCheckObserver]: This Program is SAFE, Check terminated with 40 iterations. [2018-12-02 22:58:57,482 INFO L779 CodeCheckObserver]: All specifications hold 15 specifications checked. All of them hold [2018-12-02 22:58:57,706 WARN L180 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2018-12-02 22:58:57,959 WARN L180 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 97 [2018-12-02 22:58:58,149 WARN L180 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2018-12-02 22:58:58,160 INFO L583 CodeCheckObserver]: Invariant with dag size 15 [2018-12-02 22:58:58,163 WARN L1298 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2018-12-02 22:58:58,167 WARN L1298 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2018-12-02 22:58:58,167 INFO L583 CodeCheckObserver]: Invariant with dag size 3 [2018-12-02 22:58:58,167 WARN L1298 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2018-12-02 22:58:58,167 WARN L1298 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2018-12-02 22:58:58,168 INFO L583 CodeCheckObserver]: Invariant with dag size 58 [2018-12-02 22:58:58,169 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,169 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-12-02 22:58:58,170 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,170 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-12-02 22:58:58,170 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,170 WARN L1298 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2018-12-02 22:58:58,170 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,170 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,170 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,171 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-12-02 22:58:58,171 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,171 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-12-02 22:58:58,171 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,171 WARN L1298 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2018-12-02 22:58:58,171 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,171 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-12-02 22:58:58,171 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,171 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-12-02 22:58:58,172 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,172 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,172 WARN L1298 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2018-12-02 22:58:58,172 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,173 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,174 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-12-02 22:58:58,174 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,174 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-12-02 22:58:58,174 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,174 WARN L1298 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2018-12-02 22:58:58,174 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,174 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,174 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,175 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-12-02 22:58:58,175 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,175 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-12-02 22:58:58,175 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,175 WARN L1298 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2018-12-02 22:58:58,175 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,175 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-12-02 22:58:58,175 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,175 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-12-02 22:58:58,175 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,176 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,176 WARN L1298 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2018-12-02 22:58:58,176 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 02.12 10:58:58 ImpRootNode [2018-12-02 22:58:58,177 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-12-02 22:58:58,177 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 22:58:58,177 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 22:58:58,177 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 22:58:58,177 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:56:26" (3/4) ... [2018-12-02 22:58:58,179 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-02 22:58:58,186 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2018-12-02 22:58:58,186 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-12-02 22:58:58,186 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-02 22:58:58,202 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((!(s1 == 0) && s1 + 1 <= unknown-#length-unknown[s1]) && 1 == \valid[s2]) && 0 == unknown-#memory_int-unknown[s2][unknown-#length-unknown[s2] + -1]) && !(s2 <= 1)) && 0 == unknown-#memory_int-unknown[s1][unknown-#length-unknown[s1] + -1]) && !(__builtin_alloca (length1 * sizeof(char)) == __builtin_alloca (length2 * sizeof(char)))) && 0 < s1 + 1) && \old(unknown-main_\old_#valid-unknown) == \valid[__builtin_alloca (length2 * sizeof(char)) := \valid[__builtin_alloca (length1 * sizeof(char)) := 0][__builtin_alloca (length2 * sizeof(char)) := 0][__builtin_alloca (length2 * sizeof(char))]][__builtin_alloca (length1 * sizeof(char)) := \valid[__builtin_alloca (length1 * sizeof(char)) := 0][__builtin_alloca (length1 * sizeof(char))]]) && s2 + 1 <= unknown-#length-unknown[s2]) && 1 == \valid[s1]) || (((((((((1 <= unknown-#length-unknown[s1] && 0 == s2) && 1 == \valid[s2]) && 1 <= unknown-#length-unknown[s2]) && s1 == 0) && 0 == unknown-#memory_int-unknown[s2][unknown-#length-unknown[s2] + -1]) && 0 == unknown-#memory_int-unknown[s1][unknown-#length-unknown[s1] + -1]) && !(__builtin_alloca (length1 * sizeof(char)) == __builtin_alloca (length2 * sizeof(char)))) && \old(unknown-main_\old_#valid-unknown) == \valid[__builtin_alloca (length2 * sizeof(char)) := \valid[__builtin_alloca (length1 * sizeof(char)) := 0][__builtin_alloca (length2 * sizeof(char)) := 0][__builtin_alloca (length2 * sizeof(char))]][__builtin_alloca (length1 * sizeof(char)) := \valid[__builtin_alloca (length1 * sizeof(char)) := 0][__builtin_alloca (length1 * sizeof(char))]]) && 1 == \valid[s1])) || (((((((((((!(s1 == 0) && s1 + 1 <= unknown-#length-unknown[s1]) && 1 <= s2) && 1 == \valid[s2]) && 0 == unknown-#memory_int-unknown[s2][unknown-#length-unknown[s2] + -1]) && 0 == unknown-#memory_int-unknown[s1][unknown-#length-unknown[s1] + -1]) && !(__builtin_alloca (length1 * sizeof(char)) == __builtin_alloca (length2 * sizeof(char)))) && (s1 + 2 <= unknown-#length-unknown[s1] || 1 == s1)) && 0 < s1 + 1) && \old(unknown-main_\old_#valid-unknown) == \valid[__builtin_alloca (length2 * sizeof(char)) := \valid[__builtin_alloca (length1 * sizeof(char)) := 0][__builtin_alloca (length2 * sizeof(char)) := 0][__builtin_alloca (length2 * sizeof(char))]][__builtin_alloca (length1 * sizeof(char)) := \valid[__builtin_alloca (length1 * sizeof(char)) := 0][__builtin_alloca (length1 * sizeof(char))]]) && s2 + 1 <= unknown-#length-unknown[s2]) && 1 == \valid[s1]) [2018-12-02 22:58:58,202 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !(__builtin_alloca (length1 * sizeof(char)) == __builtin_alloca (length2 * sizeof(char))) && \old(unknown-main_\old_#valid-unknown) == \valid[__builtin_alloca (length2 * sizeof(char)) := \valid[__builtin_alloca (length1 * sizeof(char)) := 0][__builtin_alloca (length2 * sizeof(char)) := 0][__builtin_alloca (length2 * sizeof(char))]][__builtin_alloca (length1 * sizeof(char)) := \valid[__builtin_alloca (length1 * sizeof(char)) := 0][__builtin_alloca (length1 * sizeof(char))]] [2018-12-02 22:58:58,202 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(unknown-main_\old_#valid-unknown) == \valid [2018-12-02 22:58:58,217 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_27dd5c31-16ce-4cf2-9ad0-6fe945372a1a/bin-2019/ukojak/witness.graphml [2018-12-02 22:58:58,218 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 22:58:58,218 INFO L168 Benchmark]: Toolchain (without parser) took 152025.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 174.6 MB). Free memory was 956.0 MB in the beginning and 869.2 MB in the end (delta: 86.8 MB). Peak memory consumption was 261.4 MB. Max. memory is 11.5 GB. [2018-12-02 22:58:58,219 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 22:58:58,219 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 956.0 MB in the beginning and 1.1 GB in the end (delta: -172.6 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2018-12-02 22:58:58,219 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-12-02 22:58:58,220 INFO L168 Benchmark]: Boogie Preprocessor took 15.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 22:58:58,220 INFO L168 Benchmark]: RCFGBuilder took 245.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.5 MB). Peak memory consumption was 33.5 MB. Max. memory is 11.5 GB. [2018-12-02 22:58:58,220 INFO L168 Benchmark]: CodeCheck took 151448.63 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 33.6 MB). Free memory was 1.1 GB in the beginning and 869.2 MB in the end (delta: 222.4 MB). Peak memory consumption was 256.0 MB. Max. memory is 11.5 GB. [2018-12-02 22:58:58,220 INFO L168 Benchmark]: Witness Printer took 40.98 ms. Allocated memory is still 1.2 GB. Free memory is still 869.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 22:58:58,221 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 37 locations, 15 error locations. SAFE Result, 150.7s OverallTime, 40 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 0 SDtfs, -298668116 SDslu, 1946605188 SDs, 0 SdLazy, 1180327854 SolverSat, -515358446 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4789 GetRequests, 3970 SyntacticMatches, 129 SemanticMatches, 690 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216787 ImplicationChecksByTransitivity, 147.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 18.2s InterpolantComputationTime, 447 NumberOfCodeBlocks, 447 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 408 ConstructedInterpolants, 0 QuantifiedInterpolants, 78362 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 39 InterpolantComputations, 26 PerfectInterpolantSequences, 136/244 InterpolantCoveringCapability, 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - PositiveResult [Line: 543]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 543]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 560]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 543]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 543]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 559]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 559]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 546]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 546]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 546]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 548]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 560]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 544]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 544]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 546]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 15 specifications checked. All of them hold - InvariantResult [Line: 540]: Loop Invariant [2018-12-02 22:58:58,222 WARN L1298 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2018-12-02 22:58:58,223 WARN L1298 BoogieBacktranslator]: unknown boogie variable main_old_#valid Derived loop invariant: !(__builtin_alloca (length1 * sizeof(char)) == __builtin_alloca (length2 * sizeof(char))) && \old(unknown-main_\old_#valid-unknown) == \valid[__builtin_alloca (length2 * sizeof(char)) := \valid[__builtin_alloca (length1 * sizeof(char)) := 0][__builtin_alloca (length2 * sizeof(char)) := 0][__builtin_alloca (length2 * sizeof(char))]][__builtin_alloca (length1 * sizeof(char)) := \valid[__builtin_alloca (length1 * sizeof(char)) := 0][__builtin_alloca (length1 * sizeof(char))]] - InvariantResult [Line: 548]: Loop Invariant [2018-12-02 22:58:58,223 WARN L1298 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2018-12-02 22:58:58,223 WARN L1298 BoogieBacktranslator]: unknown boogie variable main_old_#valid Derived loop invariant: \old(unknown-main_\old_#valid-unknown) == \valid - InvariantResult [Line: 543]: Loop Invariant [2018-12-02 22:58:58,225 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,225 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-12-02 22:58:58,225 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,225 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-12-02 22:58:58,226 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,226 WARN L1298 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2018-12-02 22:58:58,226 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,226 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,226 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,226 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-12-02 22:58:58,226 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,226 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-12-02 22:58:58,227 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,227 WARN L1298 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2018-12-02 22:58:58,227 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,227 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-12-02 22:58:58,227 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,227 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-12-02 22:58:58,227 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,227 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,227 WARN L1298 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2018-12-02 22:58:58,227 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,229 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,229 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-12-02 22:58:58,229 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,229 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-12-02 22:58:58,229 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,229 WARN L1298 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2018-12-02 22:58:58,229 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,229 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,229 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,230 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-12-02 22:58:58,230 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,230 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-12-02 22:58:58,230 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,230 WARN L1298 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2018-12-02 22:58:58,230 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,230 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-12-02 22:58:58,230 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,230 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-12-02 22:58:58,230 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,230 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length [2018-12-02 22:58:58,231 WARN L1298 BoogieBacktranslator]: unknown boogie variable main_old_#valid [2018-12-02 22:58:58,231 WARN L1298 BoogieBacktranslator]: unknown boogie variable #length Derived loop invariant: (((((((((((!(s1 == 0) && s1 + 1 <= unknown-#length-unknown[s1]) && 1 == \valid[s2]) && 0 == unknown-#memory_int-unknown[s2][unknown-#length-unknown[s2] + -1]) && !(s2 <= 1)) && 0 == unknown-#memory_int-unknown[s1][unknown-#length-unknown[s1] + -1]) && !(__builtin_alloca (length1 * sizeof(char)) == __builtin_alloca (length2 * sizeof(char)))) && 0 < s1 + 1) && \old(unknown-main_\old_#valid-unknown) == \valid[__builtin_alloca (length2 * sizeof(char)) := \valid[__builtin_alloca (length1 * sizeof(char)) := 0][__builtin_alloca (length2 * sizeof(char)) := 0][__builtin_alloca (length2 * sizeof(char))]][__builtin_alloca (length1 * sizeof(char)) := \valid[__builtin_alloca (length1 * sizeof(char)) := 0][__builtin_alloca (length1 * sizeof(char))]]) && s2 + 1 <= unknown-#length-unknown[s2]) && 1 == \valid[s1]) || (((((((((1 <= unknown-#length-unknown[s1] && 0 == s2) && 1 == \valid[s2]) && 1 <= unknown-#length-unknown[s2]) && s1 == 0) && 0 == unknown-#memory_int-unknown[s2][unknown-#length-unknown[s2] + -1]) && 0 == unknown-#memory_int-unknown[s1][unknown-#length-unknown[s1] + -1]) && !(__builtin_alloca (length1 * sizeof(char)) == __builtin_alloca (length2 * sizeof(char)))) && \old(unknown-main_\old_#valid-unknown) == \valid[__builtin_alloca (length2 * sizeof(char)) := \valid[__builtin_alloca (length1 * sizeof(char)) := 0][__builtin_alloca (length2 * sizeof(char)) := 0][__builtin_alloca (length2 * sizeof(char))]][__builtin_alloca (length1 * sizeof(char)) := \valid[__builtin_alloca (length1 * sizeof(char)) := 0][__builtin_alloca (length1 * sizeof(char))]]) && 1 == \valid[s1])) || (((((((((((!(s1 == 0) && s1 + 1 <= unknown-#length-unknown[s1]) && 1 <= s2) && 1 == \valid[s2]) && 0 == unknown-#memory_int-unknown[s2][unknown-#length-unknown[s2] + -1]) && 0 == unknown-#memory_int-unknown[s1][unknown-#length-unknown[s1] + -1]) && !(__builtin_alloca (length1 * sizeof(char)) == __builtin_alloca (length2 * sizeof(char)))) && (s1 + 2 <= unknown-#length-unknown[s1] || 1 == s1)) && 0 < s1 + 1) && \old(unknown-main_\old_#valid-unknown) == \valid[__builtin_alloca (length2 * sizeof(char)) := \valid[__builtin_alloca (length1 * sizeof(char)) := 0][__builtin_alloca (length2 * sizeof(char)) := 0][__builtin_alloca (length2 * sizeof(char))]][__builtin_alloca (length1 * sizeof(char)) := \valid[__builtin_alloca (length1 * sizeof(char)) := 0][__builtin_alloca (length1 * sizeof(char))]]) && s2 + 1 <= unknown-#length-unknown[s2]) && 1 == \valid[s1]) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 246.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 956.0 MB in the beginning and 1.1 GB in the end (delta: -172.6 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 25.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 245.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.5 MB). Peak memory consumption was 33.5 MB. Max. memory is 11.5 GB. * CodeCheck took 151448.63 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 33.6 MB). Free memory was 1.1 GB in the beginning and 869.2 MB in the end (delta: 222.4 MB). Peak memory consumption was 256.0 MB. Max. memory is 11.5 GB. * Witness Printer took 40.98 ms. Allocated memory is still 1.2 GB. Free memory is still 869.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable main_old_#valid - GenericResult: Unfinished Backtranslation unknown boogie variable #length RESULT: Ultimate proved your program to be correct! Received shutdown request...