./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loops/verisec_NetBSD-libc__loop_false-unreach-call_true-termination.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_b50cfbbd-dfcd-4bb8-b001-8f3ed4994db9/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b50cfbbd-dfcd-4bb8-b001-8f3ed4994db9/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b50cfbbd-dfcd-4bb8-b001-8f3ed4994db9/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b50cfbbd-dfcd-4bb8-b001-8f3ed4994db9/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/verisec_NetBSD-libc__loop_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_b50cfbbd-dfcd-4bb8-b001-8f3ed4994db9/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b50cfbbd-dfcd-4bb8-b001-8f3ed4994db9/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 19c675897a6506757b73d61913c0ceb3a779b5c8 ............................................................................................................................................................................................................................................................................................................................................................................................. 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 17:45:48,079 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 17:45:48,080 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 17:45:48,087 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 17:45:48,087 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 17:45:48,088 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 17:45:48,089 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 17:45:48,090 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 17:45:48,091 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 17:45:48,091 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 17:45:48,092 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 17:45:48,092 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 17:45:48,093 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 17:45:48,093 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 17:45:48,094 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 17:45:48,094 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 17:45:48,095 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 17:45:48,096 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 17:45:48,097 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 17:45:48,098 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 17:45:48,099 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 17:45:48,100 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 17:45:48,101 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 17:45:48,101 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 17:45:48,102 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 17:45:48,102 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 17:45:48,103 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 17:45:48,103 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 17:45:48,104 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 17:45:48,104 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 17:45:48,105 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 17:45:48,105 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 17:45:48,105 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 17:45:48,105 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 17:45:48,106 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 17:45:48,106 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 17:45:48,107 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b50cfbbd-dfcd-4bb8-b001-8f3ed4994db9/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 17:45:48,114 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 17:45:48,114 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 17:45:48,114 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 17:45:48,114 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 17:45:48,114 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 17:45:48,115 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 17:45:48,115 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 17:45:48,115 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 17:45:48,115 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 17:45:48,115 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 17:45:48,115 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 17:45:48,115 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 17:45:48,115 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 17:45:48,116 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 17:45:48,116 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 17:45:48,116 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 17:45:48,116 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 17:45:48,116 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 17:45:48,116 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 17:45:48,116 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 17:45:48,117 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 17:45:48,117 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 17:45:48,117 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 17:45:48,117 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 17:45:48,117 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 17:45:48,117 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 17:45:48,117 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 17:45:48,118 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 17:45:48,118 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 17:45:48,118 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 17:45:48,118 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 17:45:48,118 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 17:45:48,118 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 17:45:48,118 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 17:45:48,118 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 17:45:48,119 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 17:45:48,119 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 17:45:48,119 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_b50cfbbd-dfcd-4bb8-b001-8f3ed4994db9/bin-2019/utaipan 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 -> Taipan 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 -> 19c675897a6506757b73d61913c0ceb3a779b5c8 [2018-11-18 17:45:48,145 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 17:45:48,154 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 17:45:48,157 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 17:45:48,158 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 17:45:48,158 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 17:45:48,159 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b50cfbbd-dfcd-4bb8-b001-8f3ed4994db9/bin-2019/utaipan/../../sv-benchmarks/c/loops/verisec_NetBSD-libc__loop_false-unreach-call_true-termination.i [2018-11-18 17:45:48,201 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b50cfbbd-dfcd-4bb8-b001-8f3ed4994db9/bin-2019/utaipan/data/dbe3a75b2/079d31f8ae7a4ee59e75acf8570e1bfa/FLAGf799a47b8 [2018-11-18 17:45:48,638 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 17:45:48,638 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b50cfbbd-dfcd-4bb8-b001-8f3ed4994db9/sv-benchmarks/c/loops/verisec_NetBSD-libc__loop_false-unreach-call_true-termination.i [2018-11-18 17:45:48,644 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b50cfbbd-dfcd-4bb8-b001-8f3ed4994db9/bin-2019/utaipan/data/dbe3a75b2/079d31f8ae7a4ee59e75acf8570e1bfa/FLAGf799a47b8 [2018-11-18 17:45:48,652 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b50cfbbd-dfcd-4bb8-b001-8f3ed4994db9/bin-2019/utaipan/data/dbe3a75b2/079d31f8ae7a4ee59e75acf8570e1bfa [2018-11-18 17:45:48,655 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 17:45:48,656 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 17:45:48,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 17:45:48,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 17:45:48,660 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 17:45:48,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:45:48" (1/1) ... [2018-11-18 17:45:48,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ae989df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:45:48, skipping insertion in model container [2018-11-18 17:45:48,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:45:48" (1/1) ... [2018-11-18 17:45:48,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 17:45:48,689 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 17:45:48,801 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:45:48,807 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 17:45:48,818 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:45:48,828 INFO L195 MainTranslator]: Completed translation [2018-11-18 17:45:48,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:45:48 WrapperNode [2018-11-18 17:45:48,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 17:45:48,829 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 17:45:48,829 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 17:45:48,829 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 17:45:48,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:45:48" (1/1) ... [2018-11-18 17:45:48,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:45:48" (1/1) ... [2018-11-18 17:45:48,843 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 17:45:48,844 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 17:45:48,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 17:45:48,844 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 17:45:48,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:45:48" (1/1) ... [2018-11-18 17:45:48,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:45:48" (1/1) ... [2018-11-18 17:45:48,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:45:48" (1/1) ... [2018-11-18 17:45:48,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:45:48" (1/1) ... [2018-11-18 17:45:48,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:45:48" (1/1) ... [2018-11-18 17:45:48,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:45:48" (1/1) ... [2018-11-18 17:45:48,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:45:48" (1/1) ... [2018-11-18 17:45:48,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 17:45:48,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 17:45:48,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 17:45:48,896 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 17:45:48,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:45:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b50cfbbd-dfcd-4bb8-b001-8f3ed4994db9/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 17:45:48,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 17:45:48,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 17:45:48,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 17:45:48,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 17:45:48,932 INFO L130 BoogieDeclarations]: Found specification of procedure glob2 [2018-11-18 17:45:48,933 INFO L138 BoogieDeclarations]: Found implementation of procedure glob2 [2018-11-18 17:45:48,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 17:45:48,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 17:45:48,933 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 17:45:48,933 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 17:45:48,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 17:45:48,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 17:45:48,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 17:45:49,053 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 17:45:49,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:45:49 BoogieIcfgContainer [2018-11-18 17:45:49,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 17:45:49,054 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 17:45:49,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 17:45:49,056 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 17:45:49,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 05:45:48" (1/3) ... [2018-11-18 17:45:49,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4267053 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:45:49, skipping insertion in model container [2018-11-18 17:45:49,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:45:48" (2/3) ... [2018-11-18 17:45:49,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4267053 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:45:49, skipping insertion in model container [2018-11-18 17:45:49,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:45:49" (3/3) ... [2018-11-18 17:45:49,058 INFO L112 eAbstractionObserver]: Analyzing ICFG verisec_NetBSD-libc__loop_false-unreach-call_true-termination.i [2018-11-18 17:45:49,066 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 17:45:49,074 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 17:45:49,088 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 17:45:49,112 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 17:45:49,112 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 17:45:49,113 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 17:45:49,113 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 17:45:49,113 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 17:45:49,113 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 17:45:49,113 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 17:45:49,113 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 17:45:49,124 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-11-18 17:45:49,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-18 17:45:49,127 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:45:49,128 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:45:49,129 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:45:49,133 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:45:49,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1583108737, now seen corresponding path program 1 times [2018-11-18 17:45:49,134 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:45:49,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:45:49,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:45:49,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:45:49,166 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:45:49,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:45:49,332 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 17:45:49,334 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:45:49,334 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 17:45:49,335 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 17:45:49,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 17:45:49,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 17:45:49,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-18 17:45:49,348 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 7 states. [2018-11-18 17:45:49,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:45:49,506 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2018-11-18 17:45:49,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 17:45:49,507 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2018-11-18 17:45:49,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:45:49,514 INFO L225 Difference]: With dead ends: 58 [2018-11-18 17:45:49,515 INFO L226 Difference]: Without dead ends: 28 [2018-11-18 17:45:49,517 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-18 17:45:49,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-11-18 17:45:49,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2018-11-18 17:45:49,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-18 17:45:49,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-11-18 17:45:49,551 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 14 [2018-11-18 17:45:49,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:45:49,551 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-11-18 17:45:49,551 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 17:45:49,552 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-11-18 17:45:49,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-18 17:45:49,552 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:45:49,552 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:45:49,556 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:45:49,557 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:45:49,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1693639993, now seen corresponding path program 1 times [2018-11-18 17:45:49,557 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:45:49,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:45:49,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:45:49,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:45:49,558 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:45:49,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:45:49,693 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:45:49,693 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:45:49,693 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 17:45:49,694 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 24 with the following transitions: [2018-11-18 17:45:49,696 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [11], [13], [15], [24], [28], [31], [33], [36], [38], [39], [40], [41], [42], [43], [45] [2018-11-18 17:45:49,720 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 17:45:49,720 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 17:45:49,837 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 17:45:49,838 INFO L272 AbstractInterpreter]: Visited 19 different actions 19 times. Never merged. Never widened. Performed 122 root evaluator evaluations with a maximum evaluation depth of 5. Performed 122 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-18 17:45:49,842 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:45:49,843 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 17:45:49,843 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:45:49,843 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b50cfbbd-dfcd-4bb8-b001-8f3ed4994db9/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 17:45:49,849 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:45:49,849 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 17:45:49,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:45:49,870 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:45:50,039 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:45:50,039 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:45:50,168 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:45:50,195 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 17:45:50,195 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 18 [2018-11-18 17:45:50,195 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 17:45:50,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-18 17:45:50,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-18 17:45:50,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2018-11-18 17:45:50,197 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 14 states. [2018-11-18 17:45:50,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:45:50,348 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-11-18 17:45:50,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 17:45:50,348 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 23 [2018-11-18 17:45:50,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:45:50,350 INFO L225 Difference]: With dead ends: 37 [2018-11-18 17:45:50,351 INFO L226 Difference]: Without dead ends: 35 [2018-11-18 17:45:50,351 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 34 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2018-11-18 17:45:50,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-18 17:45:50,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-11-18 17:45:50,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-18 17:45:50,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-11-18 17:45:50,356 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 23 [2018-11-18 17:45:50,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:45:50,356 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-11-18 17:45:50,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-18 17:45:50,356 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-11-18 17:45:50,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-18 17:45:50,357 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:45:50,357 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:45:50,357 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 17:45:50,357 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:45:50,358 INFO L82 PathProgramCache]: Analyzing trace with hash 563486335, now seen corresponding path program 2 times [2018-11-18 17:45:50,358 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:45:50,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:45:50,358 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:45:50,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:45:50,359 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:45:50,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:45:50,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 17:45:50,400 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 17:45:50,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 05:45:50 BoogieIcfgContainer [2018-11-18 17:45:50,426 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 17:45:50,426 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 17:45:50,426 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 17:45:50,426 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 17:45:50,426 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:45:49" (3/4) ... [2018-11-18 17:45:50,428 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 17:45:50,462 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_b50cfbbd-dfcd-4bb8-b001-8f3ed4994db9/bin-2019/utaipan/witness.graphml [2018-11-18 17:45:50,463 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 17:45:50,463 INFO L168 Benchmark]: Toolchain (without parser) took 1808.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 959.2 MB in the beginning and 967.8 MB in the end (delta: -8.5 MB). Peak memory consumption was 133.0 MB. Max. memory is 11.5 GB. [2018-11-18 17:45:50,465 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:45:50,465 INFO L168 Benchmark]: CACSL2BoogieTranslator took 171.84 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.3 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-11-18 17:45:50,466 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.84 ms. Allocated memory is still 1.0 GB. Free memory was 948.3 MB in the beginning and 945.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 17:45:50,466 INFO L168 Benchmark]: Boogie Preprocessor took 51.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -193.4 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-11-18 17:45:50,467 INFO L168 Benchmark]: RCFGBuilder took 157.91 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: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-11-18 17:45:50,468 INFO L168 Benchmark]: TraceAbstraction took 1371.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 970.4 MB in the end (delta: 154.3 MB). Peak memory consumption was 154.3 MB. Max. memory is 11.5 GB. [2018-11-18 17:45:50,468 INFO L168 Benchmark]: Witness Printer took 36.93 ms. Allocated memory is still 1.2 GB. Free memory was 970.4 MB in the beginning and 967.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 17:45:50,471 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 171.84 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.3 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 14.84 ms. Allocated memory is still 1.0 GB. Free memory was 948.3 MB in the beginning and 945.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 51.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -193.4 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 157.91 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: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1371.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 970.4 MB in the end (delta: 154.3 MB). Peak memory consumption was 154.3 MB. Max. memory is 11.5 GB. * Witness Printer took 36.93 ms. Allocated memory is still 1.2 GB. Free memory was 970.4 MB in the beginning and 967.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] Char *tmp; VAL [\old(tmp)=11, \old(tmp)=13, tmp={0:0}] [L29] FCALL Char pathbuf[1 +1]; [L31] Char *bound = pathbuf + sizeof(pathbuf) - 1; [L33] tmp = pathbuf + sizeof(pathbuf)/sizeof(*pathbuf) - 1 VAL [\old(tmp)=0, \old(tmp)=0, bound={10:28}, pathbuf={10:0}, tmp={10:4}] [L35] CALL glob2 (pathbuf, bound) VAL [\old(tmp)=0, \old(tmp)=0, pathbuf={10:0}, pathlim={10:28}, tmp={10:4}] [L16] Char *p; [L18] p = pathbuf VAL [\old(tmp)=0, \old(tmp)=0, p={10:0}, pathbuf={10:0}, pathbuf={10:0}, pathlim={10:28}, pathlim={10:28}, tmp={10:4}] [L18] COND TRUE p <= pathlim VAL [\old(tmp)=0, \old(tmp)=0, p={10:0}, pathbuf={10:0}, pathbuf={10:0}, pathlim={10:28}, pathlim={10:28}, tmp={10:4}] [L20] CALL __VERIFIER_assert(p<=tmp) VAL [\old(cond)=1, \old(tmp)=0, \old(tmp)=0, tmp={10:4}] [L4] COND FALSE, RET !(!(cond)) VAL [\old(cond)=1, \old(tmp)=0, \old(tmp)=0, cond=1, tmp={10:4}] [L20] __VERIFIER_assert(p<=tmp) VAL [\old(tmp)=0, \old(tmp)=0, p={10:0}, pathbuf={10:0}, pathbuf={10:0}, pathlim={10:28}, pathlim={10:28}, tmp={10:4}] [L21] FCALL *p = 1 VAL [\old(tmp)=0, \old(tmp)=0, p={10:0}, pathbuf={10:0}, pathbuf={10:0}, pathlim={10:28}, pathlim={10:28}, tmp={10:4}] [L18] p++ VAL [\old(tmp)=0, \old(tmp)=0, p={10:4}, pathbuf={10:0}, pathbuf={10:0}, pathlim={10:28}, pathlim={10:28}, tmp={10:4}] [L18] COND TRUE p <= pathlim VAL [\old(tmp)=0, \old(tmp)=0, p={10:4}, pathbuf={10:0}, pathbuf={10:0}, pathlim={10:28}, pathlim={10:28}, tmp={10:4}] [L20] CALL __VERIFIER_assert(p<=tmp) VAL [\old(cond)=1, \old(tmp)=0, \old(tmp)=0, tmp={10:4}] [L4] COND FALSE, RET !(!(cond)) VAL [\old(cond)=1, \old(tmp)=0, \old(tmp)=0, cond=1, tmp={10:4}] [L20] __VERIFIER_assert(p<=tmp) VAL [\old(tmp)=0, \old(tmp)=0, p={10:4}, pathbuf={10:0}, pathbuf={10:0}, pathlim={10:28}, pathlim={10:28}, tmp={10:4}] [L21] FCALL *p = 1 VAL [\old(tmp)=0, \old(tmp)=0, p={10:4}, pathbuf={10:0}, pathbuf={10:0}, pathlim={10:28}, pathlim={10:28}, tmp={10:4}] [L18] p++ VAL [\old(tmp)=0, \old(tmp)=0, p={10:8}, pathbuf={10:0}, pathbuf={10:0}, pathlim={10:28}, pathlim={10:28}, tmp={10:4}] [L18] COND TRUE p <= pathlim VAL [\old(tmp)=0, \old(tmp)=0, p={10:8}, pathbuf={10:0}, pathbuf={10:0}, pathlim={10:28}, pathlim={10:28}, tmp={10:4}] [L20] CALL __VERIFIER_assert(p<=tmp) VAL [\old(cond)=0, \old(tmp)=0, \old(tmp)=0, tmp={10:4}] [L4] COND TRUE !(cond) VAL [\old(cond)=0, \old(tmp)=0, \old(tmp)=0, cond=0, tmp={10:4}] [L5] __VERIFIER_error() VAL [\old(cond)=0, \old(tmp)=0, \old(tmp)=0, cond=0, tmp={10:4}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 27 locations, 1 error locations. UNSAFE Result, 1.3s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 29 SDtfs, 57 SDslu, 136 SDs, 0 SdLazy, 153 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 36 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 92 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 79 ConstructedInterpolants, 0 QuantifiedInterpolants, 8664 SizeOfPredicates, 8 NumberOfNonLiveVariables, 115 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 3/15 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...