./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/list-ext_flag_false-unreach-call_false-valid-deref.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_bb2f835c-328c-4863-b398-8826b89e2e4d/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_bb2f835c-328c-4863-b398-8826b89e2e4d/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_bb2f835c-328c-4863-b398-8826b89e2e4d/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_bb2f835c-328c-4863-b398-8826b89e2e4d/bin-2019/ukojak/config/KojakMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/list-ext_flag_false-unreach-call_false-valid-deref.i -s /tmp/vcloud-vcloud-master/worker/working_dir_bb2f835c-328c-4863-b398-8826b89e2e4d/bin-2019/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_bb2f835c-328c-4863-b398-8826b89e2e4d/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 dbc8724f3e88cc7122b112b08b352efec2eae5a9 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 12:08:04,593 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 12:08:04,594 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 12:08:04,600 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 12:08:04,600 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 12:08:04,601 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 12:08:04,601 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 12:08:04,602 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 12:08:04,603 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 12:08:04,603 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 12:08:04,604 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 12:08:04,604 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 12:08:04,604 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 12:08:04,605 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 12:08:04,605 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 12:08:04,606 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 12:08:04,606 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 12:08:04,607 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 12:08:04,608 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 12:08:04,609 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 12:08:04,609 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 12:08:04,610 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 12:08:04,611 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 12:08:04,611 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 12:08:04,611 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 12:08:04,612 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 12:08:04,612 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 12:08:04,612 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 12:08:04,613 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 12:08:04,613 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 12:08:04,613 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 12:08:04,614 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 12:08:04,614 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 12:08:04,614 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 12:08:04,615 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 12:08:04,615 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 12:08:04,615 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_bb2f835c-328c-4863-b398-8826b89e2e4d/bin-2019/ukojak/config/svcomp-DerefFreeMemtrack-32bit-Kojak_Default.epf [2018-12-09 12:08:04,622 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 12:08:04,622 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 12:08:04,623 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 12:08:04,623 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 12:08:04,623 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 12:08:04,623 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 12:08:04,623 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 12:08:04,624 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 12:08:04,624 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 12:08:04,624 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 12:08:04,624 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-09 12:08:04,624 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-09 12:08:04,624 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-09 12:08:04,624 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 12:08:04,624 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 12:08:04,624 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 12:08:04,624 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-12-09 12:08:04,624 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-12-09 12:08:04,625 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 12:08:04,625 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 12:08:04,625 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-12-09 12:08:04,625 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 12:08:04,625 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 12:08:04,625 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-12-09 12:08:04,625 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 12:08:04,625 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_bb2f835c-328c-4863-b398-8826b89e2e4d/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 -> dbc8724f3e88cc7122b112b08b352efec2eae5a9 [2018-12-09 12:08:04,643 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 12:08:04,650 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 12:08:04,652 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 12:08:04,653 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 12:08:04,653 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 12:08:04,653 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_bb2f835c-328c-4863-b398-8826b89e2e4d/bin-2019/ukojak/../../sv-benchmarks/c/list-ext-properties/list-ext_flag_false-unreach-call_false-valid-deref.i [2018-12-09 12:08:04,687 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bb2f835c-328c-4863-b398-8826b89e2e4d/bin-2019/ukojak/data/341502cca/15f362e839c54f10ad30de40fd02ea62/FLAGa1d585b4b [2018-12-09 12:08:05,056 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 12:08:05,056 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_bb2f835c-328c-4863-b398-8826b89e2e4d/sv-benchmarks/c/list-ext-properties/list-ext_flag_false-unreach-call_false-valid-deref.i [2018-12-09 12:08:05,062 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bb2f835c-328c-4863-b398-8826b89e2e4d/bin-2019/ukojak/data/341502cca/15f362e839c54f10ad30de40fd02ea62/FLAGa1d585b4b [2018-12-09 12:08:05,069 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_bb2f835c-328c-4863-b398-8826b89e2e4d/bin-2019/ukojak/data/341502cca/15f362e839c54f10ad30de40fd02ea62 [2018-12-09 12:08:05,071 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 12:08:05,072 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 12:08:05,072 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 12:08:05,072 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 12:08:05,074 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 12:08:05,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:08:05" (1/1) ... [2018-12-09 12:08:05,076 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@201b218f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:08:05, skipping insertion in model container [2018-12-09 12:08:05,076 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:08:05" (1/1) ... [2018-12-09 12:08:05,080 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 12:08:05,101 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 12:08:05,263 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 12:08:05,268 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 12:08:05,326 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 12:08:05,355 INFO L195 MainTranslator]: Completed translation [2018-12-09 12:08:05,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:08:05 WrapperNode [2018-12-09 12:08:05,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 12:08:05,356 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 12:08:05,356 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 12:08:05,356 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 12:08:05,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:08:05" (1/1) ... [2018-12-09 12:08:05,369 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:08:05" (1/1) ... [2018-12-09 12:08:05,381 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 12:08:05,381 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 12:08:05,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 12:08:05,382 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 12:08:05,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:08:05" (1/1) ... [2018-12-09 12:08:05,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:08:05" (1/1) ... [2018-12-09 12:08:05,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:08:05" (1/1) ... [2018-12-09 12:08:05,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:08:05" (1/1) ... [2018-12-09 12:08:05,393 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:08:05" (1/1) ... [2018-12-09 12:08:05,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:08:05" (1/1) ... [2018-12-09 12:08:05,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:08:05" (1/1) ... [2018-12-09 12:08:05,398 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 12:08:05,399 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 12:08:05,399 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 12:08:05,399 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 12:08:05,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:08:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bb2f835c-328c-4863-b398-8826b89e2e4d/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 [2018-12-09 12:08:05,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 12:08:05,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 12:08:05,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 12:08:05,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-12-09 12:08:05,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-12-09 12:08:05,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 12:08:05,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 12:08:05,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 12:08:05,686 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 12:08:05,686 INFO L280 CfgBuilder]: Removed 11 assue(true) statements. [2018-12-09 12:08:05,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:08:05 BoogieIcfgContainer [2018-12-09 12:08:05,686 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 12:08:05,687 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-12-09 12:08:05,687 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-12-09 12:08:05,694 INFO L276 PluginConnector]: CodeCheck initialized [2018-12-09 12:08:05,694 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:08:05" (1/1) ... [2018-12-09 12:08:05,701 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:08:05,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:08:05,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 72 states and 84 transitions. [2018-12-09 12:08:05,728 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 84 transitions. [2018-12-09 12:08:05,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-12-09 12:08:05,732 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:08:05,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:08:05,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:08:05,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:08:05,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 72 states and 83 transitions. [2018-12-09 12:08:05,825 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 83 transitions. [2018-12-09 12:08:05,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-12-09 12:08:05,826 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:08:05,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:08:05,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:08:05,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:08:05,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 75 states and 88 transitions. [2018-12-09 12:08:05,898 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 88 transitions. [2018-12-09 12:08:05,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-12-09 12:08:05,898 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:08:05,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:08:05,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:08:06,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:08:06,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 78 states and 93 transitions. [2018-12-09 12:08:06,076 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 93 transitions. [2018-12-09 12:08:06,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-12-09 12:08:06,076 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:08:06,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:08:06,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:08:06,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:08:06,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 79 states and 94 transitions. [2018-12-09 12:08:06,094 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 94 transitions. [2018-12-09 12:08:06,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-12-09 12:08:06,094 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:08:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:08:06,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:08:06,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:08:06,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 80 states and 95 transitions. [2018-12-09 12:08:06,114 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 95 transitions. [2018-12-09 12:08:06,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-12-09 12:08:06,114 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:08:06,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:08:06,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:08:06,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:08:06,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 84 states and 103 transitions. [2018-12-09 12:08:06,220 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 103 transitions. [2018-12-09 12:08:06,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-12-09 12:08:06,220 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:08:06,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:08:06,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:08:06,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:08:06,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 88 states and 112 transitions. [2018-12-09 12:08:06,328 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 112 transitions. [2018-12-09 12:08:06,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-12-09 12:08:06,328 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:08:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:08:06,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:08:06,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:08:06,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 87 states and 111 transitions. [2018-12-09 12:08:06,345 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 111 transitions. [2018-12-09 12:08:06,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-12-09 12:08:06,345 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:08:06,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:08:06,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:08:06,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:08:06,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 86 states and 110 transitions. [2018-12-09 12:08:06,510 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 110 transitions. [2018-12-09 12:08:06,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-09 12:08:06,510 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:08:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:08:06,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:08:06,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:08:06,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 88 states and 115 transitions. [2018-12-09 12:08:06,764 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 115 transitions. [2018-12-09 12:08:06,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-09 12:08:06,764 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:08:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:08:06,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:08:06,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:08:06,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 87 states and 114 transitions. [2018-12-09 12:08:06,838 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 114 transitions. [2018-12-09 12:08:06,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-09 12:08:06,838 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:08:06,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:08:06,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:08:07,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:08:07,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 86 states and 113 transitions. [2018-12-09 12:08:07,094 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 113 transitions. [2018-12-09 12:08:07,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-09 12:08:07,094 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:08:07,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:08:07,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:08:07,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:08:07,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 85 states and 112 transitions. [2018-12-09 12:08:07,110 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 112 transitions. [2018-12-09 12:08:07,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-09 12:08:07,111 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:08:07,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:08:07,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:08:07,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:08:07,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 88 states and 117 transitions. [2018-12-09 12:08:07,341 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 117 transitions. [2018-12-09 12:08:07,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-09 12:08:07,341 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:08:07,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:08:07,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:08:07,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:08:07,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 87 states and 116 transitions. [2018-12-09 12:08:07,353 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 116 transitions. [2018-12-09 12:08:07,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-12-09 12:08:07,353 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:08:07,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:08:07,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:08:07,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:08:07,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 88 states and 117 transitions. [2018-12-09 12:08:07,366 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 117 transitions. [2018-12-09 12:08:07,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 12:08:07,367 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:08:07,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:08:07,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:08:07,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:08:07,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 93 states and 126 transitions. [2018-12-09 12:08:07,715 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 126 transitions. [2018-12-09 12:08:07,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-09 12:08:07,716 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:08:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:08:07,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:08:08,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:08:08,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 98 states and 134 transitions. [2018-12-09 12:08:08,196 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 134 transitions. [2018-12-09 12:08:08,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-09 12:08:08,197 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:08:08,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:08:08,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:08:08,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:08:08,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 98 states and 133 transitions. [2018-12-09 12:08:08,204 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 133 transitions. [2018-12-09 12:08:08,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-09 12:08:08,205 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:08:08,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:08:08,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:08:08,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:08:08,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 97 states and 132 transitions. [2018-12-09 12:08:08,232 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 132 transitions. [2018-12-09 12:08:08,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-09 12:08:08,232 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:08:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:08:08,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:08:08,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:08:08,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 103 states and 141 transitions. [2018-12-09 12:08:08,353 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 141 transitions. [2018-12-09 12:08:08,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-09 12:08:08,354 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:08:08,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:08:08,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:08:08,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:08:08,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 104 states and 141 transitions. [2018-12-09 12:08:08,391 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 141 transitions. [2018-12-09 12:08:08,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-09 12:08:08,392 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:08:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:08:08,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:08:08,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:08:08,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 106 states and 144 transitions. [2018-12-09 12:08:08,406 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 144 transitions. [2018-12-09 12:08:08,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-09 12:08:08,406 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:08:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:08:08,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:08:08,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:08:08,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 107 states and 146 transitions. [2018-12-09 12:08:08,505 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 146 transitions. [2018-12-09 12:08:08,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-09 12:08:08,505 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:08:08,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:08:08,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:08:08,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:08:08,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 108 states and 147 transitions. [2018-12-09 12:08:08,832 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 147 transitions. [2018-12-09 12:08:08,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-09 12:08:08,832 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:08:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:08:08,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:08:08,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:08:08,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 107 states and 146 transitions. [2018-12-09 12:08:08,858 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 146 transitions. [2018-12-09 12:08:08,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-09 12:08:08,859 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:08:08,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:08:08,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:08:08,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:08:08,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 106 states and 145 transitions. [2018-12-09 12:08:08,880 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 145 transitions. [2018-12-09 12:08:08,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-09 12:08:08,880 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:08:08,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:08:08,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:08:08,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:08:08,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 105 states and 144 transitions. [2018-12-09 12:08:08,894 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 144 transitions. [2018-12-09 12:08:08,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-09 12:08:08,894 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:08:08,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:08:08,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:08:08,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:08:08,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 107 states and 145 transitions. [2018-12-09 12:08:08,971 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 145 transitions. [2018-12-09 12:08:08,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-09 12:08:08,972 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:08:08,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:08:09,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:08:11,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:08:11,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 119 states and 166 transitions. [2018-12-09 12:08:11,888 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 166 transitions. [2018-12-09 12:08:11,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-09 12:08:11,888 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:08:11,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:08:11,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:08:11,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-12-09 12:08:11,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 118 states and 165 transitions. [2018-12-09 12:08:11,907 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 165 transitions. [2018-12-09 12:08:11,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-09 12:08:11,908 INFO L431 CodeCheckObserver]: Error Path is FOUND. [2018-12-09 12:08:11,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:08:11,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:08:11,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:08:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:08:11,962 WARN L497 CodeCheckObserver]: This program is UNSAFE, Check terminated with 32 iterations. [2018-12-09 12:08:11,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 09.12 12:08:11 ImpRootNode [2018-12-09 12:08:11,987 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-12-09 12:08:11,987 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 12:08:11,987 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 12:08:11,988 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 12:08:11,988 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:08:05" (3/4) ... [2018-12-09 12:08:11,990 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-09 12:08:12,020 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_bb2f835c-328c-4863-b398-8826b89e2e4d/bin-2019/ukojak/witness.graphml [2018-12-09 12:08:12,020 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 12:08:12,021 INFO L168 Benchmark]: Toolchain (without parser) took 6949.61 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 318.8 MB). Free memory was 956.6 MB in the beginning and 1.2 GB in the end (delta: -197.9 MB). Peak memory consumption was 120.8 MB. Max. memory is 11.5 GB. [2018-12-09 12:08:12,022 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 982.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 12:08:12,022 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 956.6 MB in the beginning and 1.1 GB in the end (delta: -168.8 MB). Peak memory consumption was 30.1 MB. Max. memory is 11.5 GB. [2018-12-09 12:08:12,023 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.33 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. [2018-12-09 12:08:12,023 INFO L168 Benchmark]: Boogie Preprocessor took 17.07 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: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2018-12-09 12:08:12,023 INFO L168 Benchmark]: RCFGBuilder took 287.61 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: 32.5 MB). Peak memory consumption was 32.5 MB. Max. memory is 11.5 GB. [2018-12-09 12:08:12,023 INFO L168 Benchmark]: CodeCheck took 6300.53 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 177.2 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -68.6 MB). Peak memory consumption was 108.6 MB. Max. memory is 11.5 GB. [2018-12-09 12:08:12,024 INFO L168 Benchmark]: Witness Printer took 33.21 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 12:08:12,026 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, 81 locations, 35 error locations. UNSAFE Result, 6.2s OverallTime, 32 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 15366664 SDtfs, -586687530 SDslu, 2083030664 SDs, 0 SdLazy, -2047711456 SolverSat, 61838126 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2289 GetRequests, 2099 SyntacticMatches, 34 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10650 ImplicationChecksByTransitivity, 5.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 297 NumberOfCodeBlocks, 297 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 251 ConstructedInterpolants, 0 QuantifiedInterpolants, 11367 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 31 InterpolantComputations, 31 PerfectInterpolantSequences, 0/0 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 - CounterExampleResult [Line: 662]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L628] List p, a, t; [L629] a = (List) malloc(sizeof(struct node)) [L630] COND FALSE !(a == 0) [L631] p = a [L632] int i = 0; [L633] i < 20 && __VERIFIER_nondet_int() [L633] i < 20 && __VERIFIER_nondet_int() [L633] COND FALSE !(i < 20 && __VERIFIER_nondet_int()) [L646] p->h = 3 [L647] p = a [L648] EXPR p->h [L648] COND FALSE !(p->h != 3) [L659] EXPR p->h [L659] COND FALSE !(p->h != 3 || i > 20) [L661] p = a [L662] EXPR p->n [L662] COND TRUE p->n != 0 [L663] EXPR p->n [L663] t = p->n [L664] free(p) [L664] free(p) [L665] p = t [L662] p->n * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 982.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 283.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 956.6 MB in the beginning and 1.1 GB in the end (delta: -168.8 MB). Peak memory consumption was 30.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 25.33 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. * Boogie Preprocessor took 17.07 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: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 287.61 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: 32.5 MB). Peak memory consumption was 32.5 MB. Max. memory is 11.5 GB. * CodeCheck took 6300.53 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 177.2 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -68.6 MB). Peak memory consumption was 108.6 MB. Max. memory is 11.5 GB. * Witness Printer took 33.21 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...