./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/list-properties/list_flag_false-unreach-call_false-valid-memcleanup.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_4966f8ec-2940-48c0-be61-4475671ed454/bin-2019/ukojak/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_4966f8ec-2940-48c0-be61-4475671ed454/bin-2019/ukojak/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_4966f8ec-2940-48c0-be61-4475671ed454/bin-2019/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_4966f8ec-2940-48c0-be61-4475671ed454/bin-2019/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/list-properties/list_flag_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_4966f8ec-2940-48c0-be61-4475671ed454/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_4966f8ec-2940-48c0-be61-4475671ed454/bin-2019/ukojak --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6ebd5b9a3160cad0f8876c1414f4b918e994ed8d .................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 12:57:48,807 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 12:57:48,809 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 12:57:48,818 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 12:57:48,818 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 12:57:48,819 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 12:57:48,820 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 12:57:48,821 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 12:57:48,823 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 12:57:48,823 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 12:57:48,824 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 12:57:48,824 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 12:57:48,825 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 12:57:48,826 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 12:57:48,827 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 12:57:48,828 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 12:57:48,828 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 12:57:48,830 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 12:57:48,832 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 12:57:48,833 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 12:57:48,834 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 12:57:48,835 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 12:57:48,837 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 12:57:48,837 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 12:57:48,838 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 12:57:48,838 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 12:57:48,839 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 12:57:48,840 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 12:57:48,840 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 12:57:48,842 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 12:57:48,842 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 12:57:48,843 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 12:57:48,843 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 12:57:48,843 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 12:57:48,844 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 12:57:48,844 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 12:57:48,845 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_4966f8ec-2940-48c0-be61-4475671ed454/bin-2019/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2018-11-18 12:57:48,857 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 12:57:48,857 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 12:57:48,858 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 12:57:48,858 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 12:57:48,858 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 12:57:48,859 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 12:57:48,859 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 12:57:48,859 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 12:57:48,859 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 12:57:48,859 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 12:57:48,860 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 12:57:48,860 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 12:57:48,860 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 12:57:48,860 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 12:57:48,860 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 12:57:48,860 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 12:57:48,861 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 12:57:48,861 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 12:57:48,862 INFO L131 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2018-11-18 12:57:48,863 INFO L133 SettingsManager]: * Timeout in seconds=1000000 [2018-11-18 12:57:48,863 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 12:57:48,863 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 12:57:48,863 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2018-11-18 12:57:48,863 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 12:57:48,863 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 12:57:48,864 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 12:57:48,864 INFO L133 SettingsManager]: * Trace refinement strategy=PENGUIN [2018-11-18 12:57:48,864 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 12:57:48,864 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 12:57:48,864 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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_4966f8ec-2940-48c0-be61-4475671ed454/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 ! call(__VERIFIER_error())) ) 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 -> 6ebd5b9a3160cad0f8876c1414f4b918e994ed8d [2018-11-18 12:57:48,892 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 12:57:48,902 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 12:57:48,904 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 12:57:48,906 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 12:57:48,906 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 12:57:48,907 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_4966f8ec-2940-48c0-be61-4475671ed454/bin-2019/ukojak/../../sv-benchmarks/c/list-properties/list_flag_false-unreach-call_false-valid-memcleanup.i [2018-11-18 12:57:48,952 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4966f8ec-2940-48c0-be61-4475671ed454/bin-2019/ukojak/data/485b04d74/64f563b78794472899bd22fab7f91c24/FLAGdf10a4177 [2018-11-18 12:57:49,336 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 12:57:49,336 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_4966f8ec-2940-48c0-be61-4475671ed454/sv-benchmarks/c/list-properties/list_flag_false-unreach-call_false-valid-memcleanup.i [2018-11-18 12:57:49,361 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4966f8ec-2940-48c0-be61-4475671ed454/bin-2019/ukojak/data/485b04d74/64f563b78794472899bd22fab7f91c24/FLAGdf10a4177 [2018-11-18 12:57:49,714 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_4966f8ec-2940-48c0-be61-4475671ed454/bin-2019/ukojak/data/485b04d74/64f563b78794472899bd22fab7f91c24 [2018-11-18 12:57:49,717 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 12:57:49,718 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 12:57:49,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 12:57:49,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 12:57:49,721 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 12:57:49,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:57:49" (1/1) ... [2018-11-18 12:57:49,723 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@82652b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:57:49, skipping insertion in model container [2018-11-18 12:57:49,723 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:57:49" (1/1) ... [2018-11-18 12:57:49,731 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 12:57:49,765 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 12:57:49,983 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:57:49,989 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 12:57:50,019 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:57:50,120 INFO L195 MainTranslator]: Completed translation [2018-11-18 12:57:50,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:57:50 WrapperNode [2018-11-18 12:57:50,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 12:57:50,122 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 12:57:50,123 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 12:57:50,123 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 12:57:50,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:57:50" (1/1) ... [2018-11-18 12:57:50,141 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:57:50" (1/1) ... [2018-11-18 12:57:50,157 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 12:57:50,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 12:57:50,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 12:57:50,160 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 12:57:50,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:57:50" (1/1) ... [2018-11-18 12:57:50,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:57:50" (1/1) ... [2018-11-18 12:57:50,167 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:57:50" (1/1) ... [2018-11-18 12:57:50,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:57:50" (1/1) ... [2018-11-18 12:57:50,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:57:50" (1/1) ... [2018-11-18 12:57:50,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:57:50" (1/1) ... [2018-11-18 12:57:50,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:57:50" (1/1) ... [2018-11-18 12:57:50,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 12:57:50,178 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 12:57:50,178 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 12:57:50,178 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 12:57:50,179 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:57:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4966f8ec-2940-48c0-be61-4475671ed454/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 [2018-11-18 12:57:50,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 12:57:50,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 12:57:50,241 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-18 12:57:50,241 INFO L138 BoogieDeclarations]: Found implementation of procedure exit [2018-11-18 12:57:50,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 12:57:50,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-18 12:57:50,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-18 12:57:50,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 12:57:50,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 12:57:50,668 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 12:57:50,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:57:50 BoogieIcfgContainer [2018-11-18 12:57:50,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 12:57:50,669 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2018-11-18 12:57:50,669 INFO L271 PluginConnector]: Initializing CodeCheck... [2018-11-18 12:57:50,680 INFO L276 PluginConnector]: CodeCheck initialized [2018-11-18 12:57:50,680 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:57:50" (1/1) ... [2018-11-18 12:57:50,695 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:57:50,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 12:57:50,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 23 states and 31 transitions. [2018-11-18 12:57:50,721 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2018-11-18 12:57:50,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 12:57:50,723 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 12:57:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:57:50,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:57:50,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 12:57:50,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 23 states and 27 transitions. [2018-11-18 12:57:50,825 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2018-11-18 12:57:50,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-18 12:57:50,825 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 12:57:50,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:57:50,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:57:51,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 12:57:51,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 31 states and 42 transitions. [2018-11-18 12:57:51,142 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2018-11-18 12:57:51,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-18 12:57:51,143 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 12:57:51,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:57:51,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:57:51,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 12:57:51,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 33 states and 46 transitions. [2018-11-18 12:57:51,207 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 46 transitions. [2018-11-18 12:57:51,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-18 12:57:51,208 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 12:57:51,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:57:51,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:57:51,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 12:57:51,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 33 states and 44 transitions. [2018-11-18 12:57:51,416 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions. [2018-11-18 12:57:51,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-18 12:57:51,417 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 12:57:51,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:57:51,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:57:51,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2018-11-18 12:57:51,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 33 states and 42 transitions. [2018-11-18 12:57:51,766 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2018-11-18 12:57:51,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-18 12:57:51,767 INFO L427 CodeCheckObserver]: Error Path is FOUND. [2018-11-18 12:57:51,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 12:57:51,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 12:57:51,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 12:57:51,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 12:57:51,856 WARN L493 CodeCheckObserver]: This program is UNSAFE, Check terminated with 6 iterations. [2018-11-18 12:57:51,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 18.11 12:57:51 ImpRootNode [2018-11-18 12:57:51,888 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2018-11-18 12:57:51,888 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 12:57:51,889 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 12:57:51,889 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 12:57:51,889 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:57:50" (3/4) ... [2018-11-18 12:57:51,892 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 12:57:51,947 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_4966f8ec-2940-48c0-be61-4475671ed454/bin-2019/ukojak/witness.graphml [2018-11-18 12:57:51,948 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 12:57:51,958 INFO L168 Benchmark]: Toolchain (without parser) took 2240.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 160.4 MB). Free memory was 955.8 MB in the beginning and 1.0 GB in the end (delta: -79.3 MB). Peak memory consumption was 81.1 MB. Max. memory is 11.5 GB. [2018-11-18 12:57:51,959 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:57:51,959 INFO L168 Benchmark]: CACSL2BoogieTranslator took 403.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 160.4 MB). Free memory was 955.8 MB in the beginning and 1.2 GB in the end (delta: -198.1 MB). Peak memory consumption was 43.5 MB. Max. memory is 11.5 GB. [2018-11-18 12:57:51,960 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-18 12:57:51,961 INFO L168 Benchmark]: Boogie Preprocessor took 18.48 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:57:51,964 INFO L168 Benchmark]: RCFGBuilder took 490.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 26.7 MB). Peak memory consumption was 26.7 MB. Max. memory is 11.5 GB. [2018-11-18 12:57:51,965 INFO L168 Benchmark]: CodeCheck took 1218.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 81.9 MB). Peak memory consumption was 81.9 MB. Max. memory is 11.5 GB. [2018-11-18 12:57:51,965 INFO L168 Benchmark]: Witness Printer took 68.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-11-18 12:57:51,975 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 2 procedures, 32 locations, 1 error locations. UNSAFE Result, 1.1s OverallTime, 6 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 448 SDtfs, 208 SDslu, 192 SDs, 0 SdLazy, 526 SolverSat, 114 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 459 GetRequests, 430 SyntacticMatches, 11 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 2461 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 4/4 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: 652]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L627] int flag = __VERIFIER_nondet_int(); [L628] List p, a, t; [L629] EXPR, FCALL malloc(sizeof(struct node)) [L629] a = (List) malloc(sizeof(struct node)) [L630] COND FALSE !(a == 0) [L631] p = a [L632] COND TRUE __VERIFIER_nondet_int() [L633] COND FALSE !(\read(flag)) [L636] FCALL p->h = 2 [L638] EXPR, FCALL malloc(sizeof(struct node)) [L638] t = (List) malloc(sizeof(struct node)) [L639] COND FALSE !(t == 0) [L640] FCALL p->n = t [L641] EXPR, FCALL p->n [L641] p = p->n [L632] COND FALSE !(__VERIFIER_nondet_int()) [L643] FCALL p->h = 3 [L644] p = a [L645] COND FALSE !(\read(flag)) [L649] EXPR, FCALL p->h [L649] COND FALSE !(p->h == 1) [L651] EXPR, FCALL p->h [L651] COND TRUE p->h != 3 [L652] __VERIFIER_error() * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 403.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 160.4 MB). Free memory was 955.8 MB in the beginning and 1.2 GB in the end (delta: -198.1 MB). Peak memory consumption was 43.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 36.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.48 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 490.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 26.7 MB). Peak memory consumption was 26.7 MB. Max. memory is 11.5 GB. * CodeCheck took 1218.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 81.9 MB). Peak memory consumption was 81.9 MB. Max. memory is 11.5 GB. * Witness Printer took 68.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...