./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/forester-heap/dll-sorted_false-unreach-call_false-valid-memcleanup.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_66b48c6e-9bb9-4656-b62c-327fad4dc0ee/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_66b48c6e-9bb9-4656-b62c-327fad4dc0ee/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_66b48c6e-9bb9-4656-b62c-327fad4dc0ee/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_66b48c6e-9bb9-4656-b62c-327fad4dc0ee/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-sorted_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_66b48c6e-9bb9-4656-b62c-327fad4dc0ee/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_66b48c6e-9bb9-4656-b62c-327fad4dc0ee/bin-2019/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3d1a973dcd7009ffcd2eda1338249f4d290fb62a ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.23-1dbac8b [2018-10-26 22:07:40,249 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 22:07:40,250 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 22:07:40,260 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 22:07:40,260 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 22:07:40,261 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 22:07:40,262 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 22:07:40,267 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 22:07:40,269 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 22:07:40,271 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 22:07:40,273 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 22:07:40,273 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 22:07:40,274 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 22:07:40,277 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 22:07:40,284 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 22:07:40,285 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 22:07:40,286 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 22:07:40,287 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 22:07:40,288 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 22:07:40,289 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 22:07:40,293 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 22:07:40,294 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 22:07:40,296 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 22:07:40,296 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 22:07:40,296 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 22:07:40,300 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 22:07:40,301 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 22:07:40,301 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 22:07:40,302 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 22:07:40,303 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 22:07:40,303 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 22:07:40,303 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 22:07:40,304 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 22:07:40,304 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 22:07:40,304 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 22:07:40,305 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 22:07:40,308 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_66b48c6e-9bb9-4656-b62c-327fad4dc0ee/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-10-26 22:07:40,320 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 22:07:40,321 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 22:07:40,322 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 22:07:40,322 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 22:07:40,322 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 22:07:40,323 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 22:07:40,323 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 22:07:40,323 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 22:07:40,323 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 22:07:40,323 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 22:07:40,323 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 22:07:40,323 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 22:07:40,324 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 22:07:40,324 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 22:07:40,324 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 22:07:40,324 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 22:07:40,324 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 22:07:40,324 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 22:07:40,325 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 22:07:40,325 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 22:07:40,325 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 22:07:40,327 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 22:07:40,327 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:07:40,327 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 22:07:40,327 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 22:07:40,328 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 22:07:40,328 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 22:07:40,328 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 22:07:40,328 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 22:07:40,328 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_66b48c6e-9bb9-4656-b62c-327fad4dc0ee/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d1a973dcd7009ffcd2eda1338249f4d290fb62a [2018-10-26 22:07:40,357 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 22:07:40,373 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 22:07:40,380 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 22:07:40,381 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 22:07:40,382 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 22:07:40,382 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_66b48c6e-9bb9-4656-b62c-327fad4dc0ee/bin-2019/uautomizer/../../sv-benchmarks/c/forester-heap/dll-sorted_false-unreach-call_false-valid-memcleanup.i [2018-10-26 22:07:40,442 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_66b48c6e-9bb9-4656-b62c-327fad4dc0ee/bin-2019/uautomizer/data/f948f5564/36e75372cf52424fa96632130264310b/FLAGd317fd273 [2018-10-26 22:07:40,910 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 22:07:40,910 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_66b48c6e-9bb9-4656-b62c-327fad4dc0ee/sv-benchmarks/c/forester-heap/dll-sorted_false-unreach-call_false-valid-memcleanup.i [2018-10-26 22:07:40,923 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_66b48c6e-9bb9-4656-b62c-327fad4dc0ee/bin-2019/uautomizer/data/f948f5564/36e75372cf52424fa96632130264310b/FLAGd317fd273 [2018-10-26 22:07:40,936 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_66b48c6e-9bb9-4656-b62c-327fad4dc0ee/bin-2019/uautomizer/data/f948f5564/36e75372cf52424fa96632130264310b [2018-10-26 22:07:40,939 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 22:07:40,940 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 22:07:40,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 22:07:40,941 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 22:07:40,945 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 22:07:40,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:07:40" (1/1) ... [2018-10-26 22:07:40,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@201f5e68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:07:40, skipping insertion in model container [2018-10-26 22:07:40,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:07:40" (1/1) ... [2018-10-26 22:07:40,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 22:07:41,004 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 22:07:41,315 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:07:41,326 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 22:07:41,367 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:07:41,404 INFO L193 MainTranslator]: Completed translation [2018-10-26 22:07:41,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:07:41 WrapperNode [2018-10-26 22:07:41,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 22:07:41,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 22:07:41,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 22:07:41,406 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 22:07:41,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:07:41" (1/1) ... [2018-10-26 22:07:41,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:07:41" (1/1) ... [2018-10-26 22:07:41,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:07:41" (1/1) ... [2018-10-26 22:07:41,505 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:07:41" (1/1) ... [2018-10-26 22:07:41,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:07:41" (1/1) ... [2018-10-26 22:07:41,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:07:41" (1/1) ... [2018-10-26 22:07:41,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:07:41" (1/1) ... [2018-10-26 22:07:41,538 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 22:07:41,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 22:07:41,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 22:07:41,539 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 22:07:41,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:07:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_66b48c6e-9bb9-4656-b62c-327fad4dc0ee/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:07:41,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 22:07:41,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 22:07:41,587 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 22:07:41,587 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-10-26 22:07:41,587 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-10-26 22:07:41,587 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-10-26 22:07:41,587 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-10-26 22:07:41,588 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-10-26 22:07:41,588 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-10-26 22:07:41,588 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-10-26 22:07:41,588 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-10-26 22:07:41,588 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-10-26 22:07:41,588 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-10-26 22:07:41,588 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-10-26 22:07:41,588 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-10-26 22:07:41,589 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-10-26 22:07:41,589 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-10-26 22:07:41,589 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-10-26 22:07:41,589 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-10-26 22:07:41,589 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-10-26 22:07:41,589 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-10-26 22:07:41,589 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-10-26 22:07:41,589 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-10-26 22:07:41,589 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-10-26 22:07:41,590 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-10-26 22:07:41,590 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-10-26 22:07:41,590 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-10-26 22:07:41,590 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-10-26 22:07:41,590 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-10-26 22:07:41,590 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-10-26 22:07:41,590 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-10-26 22:07:41,590 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-10-26 22:07:41,590 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-10-26 22:07:41,591 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-10-26 22:07:41,591 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-10-26 22:07:41,591 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-10-26 22:07:41,591 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-10-26 22:07:41,591 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-10-26 22:07:41,591 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-10-26 22:07:41,591 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-10-26 22:07:41,591 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-10-26 22:07:41,591 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-10-26 22:07:41,591 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-10-26 22:07:41,592 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-10-26 22:07:41,592 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-10-26 22:07:41,592 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-10-26 22:07:41,592 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-10-26 22:07:41,592 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-10-26 22:07:41,592 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-10-26 22:07:41,592 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-10-26 22:07:41,592 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-10-26 22:07:41,592 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-10-26 22:07:41,593 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-10-26 22:07:41,593 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-10-26 22:07:41,593 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-10-26 22:07:41,593 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-10-26 22:07:41,593 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-10-26 22:07:41,593 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-10-26 22:07:41,593 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-10-26 22:07:41,593 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-10-26 22:07:41,593 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-10-26 22:07:41,594 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2018-10-26 22:07:41,594 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-10-26 22:07:41,594 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-10-26 22:07:41,594 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2018-10-26 22:07:41,594 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-10-26 22:07:41,594 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 22:07:41,594 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2018-10-26 22:07:41,594 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-10-26 22:07:41,594 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-10-26 22:07:41,594 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-10-26 22:07:41,595 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-10-26 22:07:41,595 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-10-26 22:07:41,595 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-10-26 22:07:41,595 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-10-26 22:07:41,595 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-10-26 22:07:41,595 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-10-26 22:07:41,595 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-10-26 22:07:41,595 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-10-26 22:07:41,595 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-10-26 22:07:41,596 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-10-26 22:07:41,596 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-10-26 22:07:41,596 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-10-26 22:07:41,596 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-10-26 22:07:41,596 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-10-26 22:07:41,596 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-10-26 22:07:41,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-10-26 22:07:41,596 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-10-26 22:07:41,596 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-10-26 22:07:41,597 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-10-26 22:07:41,597 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-10-26 22:07:41,597 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-10-26 22:07:41,597 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-10-26 22:07:41,597 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-10-26 22:07:41,597 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-10-26 22:07:41,597 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-10-26 22:07:41,597 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-10-26 22:07:41,598 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-10-26 22:07:41,598 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-10-26 22:07:41,598 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-10-26 22:07:41,598 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-10-26 22:07:41,598 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-10-26 22:07:41,598 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-10-26 22:07:41,598 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-10-26 22:07:41,598 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-10-26 22:07:41,598 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-10-26 22:07:41,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-10-26 22:07:41,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-10-26 22:07:41,599 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 22:07:41,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-10-26 22:07:41,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-10-26 22:07:41,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-10-26 22:07:41,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-10-26 22:07:41,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-10-26 22:07:41,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-10-26 22:07:41,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 22:07:41,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 22:07:41,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-10-26 22:07:42,419 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 22:07:42,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:07:42 BoogieIcfgContainer [2018-10-26 22:07:42,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 22:07:42,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 22:07:42,421 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 22:07:42,424 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 22:07:42,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:07:40" (1/3) ... [2018-10-26 22:07:42,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@160d9c75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:07:42, skipping insertion in model container [2018-10-26 22:07:42,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:07:41" (2/3) ... [2018-10-26 22:07:42,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@160d9c75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:07:42, skipping insertion in model container [2018-10-26 22:07:42,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:07:42" (3/3) ... [2018-10-26 22:07:42,427 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-sorted_false-unreach-call_false-valid-memcleanup.i [2018-10-26 22:07:42,435 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 22:07:42,442 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-10-26 22:07:42,457 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-10-26 22:07:42,485 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 22:07:42,485 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 22:07:42,485 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 22:07:42,486 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 22:07:42,486 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 22:07:42,486 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 22:07:42,486 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 22:07:42,486 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 22:07:42,486 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 22:07:42,505 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states. [2018-10-26 22:07:42,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-26 22:07:42,524 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:07:42,525 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:07:42,527 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:07:42,533 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:07:42,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1882867361, now seen corresponding path program 1 times [2018-10-26 22:07:42,540 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:07:42,541 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:07:42,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:07:42,592 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:07:42,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:07:42,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:07:42,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:07:42,685 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:07:42,685 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 22:07:42,687 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 22:07:42,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 22:07:42,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 22:07:42,698 INFO L87 Difference]: Start difference. First operand 122 states. Second operand 2 states. [2018-10-26 22:07:42,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:07:42,727 INFO L93 Difference]: Finished difference Result 217 states and 283 transitions. [2018-10-26 22:07:42,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 22:07:42,728 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2018-10-26 22:07:42,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:07:42,742 INFO L225 Difference]: With dead ends: 217 [2018-10-26 22:07:42,742 INFO L226 Difference]: Without dead ends: 111 [2018-10-26 22:07:42,746 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 22:07:42,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-26 22:07:42,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-10-26 22:07:42,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-10-26 22:07:42,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 121 transitions. [2018-10-26 22:07:42,794 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 121 transitions. Word has length 16 [2018-10-26 22:07:42,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:07:42,794 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 121 transitions. [2018-10-26 22:07:42,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 22:07:42,794 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 121 transitions. [2018-10-26 22:07:42,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-26 22:07:42,795 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:07:42,795 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:07:42,795 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:07:42,796 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:07:42,796 INFO L82 PathProgramCache]: Analyzing trace with hash -536468766, now seen corresponding path program 1 times [2018-10-26 22:07:42,796 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:07:42,796 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:07:42,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:07:42,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:07:42,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:07:42,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:07:42,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:07:42,924 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:07:42,924 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:07:42,925 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 22:07:42,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 22:07:42,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:07:42,926 INFO L87 Difference]: Start difference. First operand 111 states and 121 transitions. Second operand 3 states. [2018-10-26 22:07:43,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:07:43,110 INFO L93 Difference]: Finished difference Result 229 states and 252 transitions. [2018-10-26 22:07:43,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 22:07:43,113 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-10-26 22:07:43,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:07:43,115 INFO L225 Difference]: With dead ends: 229 [2018-10-26 22:07:43,115 INFO L226 Difference]: Without dead ends: 129 [2018-10-26 22:07:43,116 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:07:43,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-10-26 22:07:43,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 125. [2018-10-26 22:07:43,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-10-26 22:07:43,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 136 transitions. [2018-10-26 22:07:43,131 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 136 transitions. Word has length 18 [2018-10-26 22:07:43,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:07:43,131 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 136 transitions. [2018-10-26 22:07:43,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 22:07:43,131 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 136 transitions. [2018-10-26 22:07:43,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-26 22:07:43,132 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:07:43,132 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:07:43,133 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:07:43,133 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:07:43,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1223830220, now seen corresponding path program 1 times [2018-10-26 22:07:43,133 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:07:43,133 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:07:43,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:07:43,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:07:43,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:07:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:07:43,302 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-10-26 22:07:43,302 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:07:43,303 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 22:07:43,303 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 22:07:43,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 22:07:43,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-26 22:07:43,304 INFO L87 Difference]: Start difference. First operand 125 states and 136 transitions. Second operand 5 states. [2018-10-26 22:07:44,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:07:44,023 INFO L93 Difference]: Finished difference Result 206 states and 224 transitions. [2018-10-26 22:07:44,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 22:07:44,024 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2018-10-26 22:07:44,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:07:44,025 INFO L225 Difference]: With dead ends: 206 [2018-10-26 22:07:44,025 INFO L226 Difference]: Without dead ends: 204 [2018-10-26 22:07:44,025 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-26 22:07:44,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-10-26 22:07:44,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 123. [2018-10-26 22:07:44,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-10-26 22:07:44,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 134 transitions. [2018-10-26 22:07:44,035 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 134 transitions. Word has length 33 [2018-10-26 22:07:44,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:07:44,035 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 134 transitions. [2018-10-26 22:07:44,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 22:07:44,035 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 134 transitions. [2018-10-26 22:07:44,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-26 22:07:44,036 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:07:44,037 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:07:44,037 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:07:44,045 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:07:44,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1490343565, now seen corresponding path program 1 times [2018-10-26 22:07:44,045 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:07:44,046 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:07:44,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:07:44,047 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:07:44,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:07:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:07:44,181 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-10-26 22:07:44,181 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:07:44,181 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-26 22:07:44,182 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 22:07:44,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 22:07:44,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-10-26 22:07:44,182 INFO L87 Difference]: Start difference. First operand 123 states and 134 transitions. Second operand 7 states. [2018-10-26 22:07:44,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:07:44,534 INFO L93 Difference]: Finished difference Result 209 states and 229 transitions. [2018-10-26 22:07:44,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-26 22:07:44,535 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2018-10-26 22:07:44,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:07:44,536 INFO L225 Difference]: With dead ends: 209 [2018-10-26 22:07:44,536 INFO L226 Difference]: Without dead ends: 142 [2018-10-26 22:07:44,536 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-26 22:07:44,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2018-10-26 22:07:44,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 129. [2018-10-26 22:07:44,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-10-26 22:07:44,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 141 transitions. [2018-10-26 22:07:44,552 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 141 transitions. Word has length 50 [2018-10-26 22:07:44,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:07:44,552 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 141 transitions. [2018-10-26 22:07:44,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 22:07:44,552 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 141 transitions. [2018-10-26 22:07:44,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-26 22:07:44,553 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:07:44,553 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:07:44,554 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:07:44,554 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:07:44,554 INFO L82 PathProgramCache]: Analyzing trace with hash -46174644, now seen corresponding path program 1 times [2018-10-26 22:07:44,554 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:07:44,554 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:07:44,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:07:44,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:07:44,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:07:44,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 22:07:44,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 22:07:44,627 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-26 22:07:44,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 10:07:44 BoogieIcfgContainer [2018-10-26 22:07:44,673 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 22:07:44,674 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 22:07:44,674 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 22:07:44,674 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 22:07:44,675 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:07:42" (3/4) ... [2018-10-26 22:07:44,677 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-10-26 22:07:44,734 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_66b48c6e-9bb9-4656-b62c-327fad4dc0ee/bin-2019/uautomizer/witness.graphml [2018-10-26 22:07:44,734 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 22:07:44,735 INFO L168 Benchmark]: Toolchain (without parser) took 3795.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 958.1 MB in the beginning and 968.4 MB in the end (delta: -10.3 MB). Peak memory consumption was 140.7 MB. Max. memory is 11.5 GB. [2018-10-26 22:07:44,736 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 22:07:44,737 INFO L168 Benchmark]: CACSL2BoogieTranslator took 463.73 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 933.9 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. [2018-10-26 22:07:44,738 INFO L168 Benchmark]: Boogie Preprocessor took 132.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 933.9 MB in the beginning and 1.1 GB in the end (delta: -213.7 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-10-26 22:07:44,739 INFO L168 Benchmark]: RCFGBuilder took 881.71 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: 62.7 MB). Peak memory consumption was 62.7 MB. Max. memory is 11.5 GB. [2018-10-26 22:07:44,739 INFO L168 Benchmark]: TraceAbstraction took 2252.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 971.1 MB in the end (delta: 113.8 MB). Peak memory consumption was 113.8 MB. Max. memory is 11.5 GB. [2018-10-26 22:07:44,739 INFO L168 Benchmark]: Witness Printer took 60.77 ms. Allocated memory is still 1.2 GB. Free memory was 971.1 MB in the beginning and 968.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-26 22:07:44,743 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 463.73 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 933.9 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 132.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 933.9 MB in the beginning and 1.1 GB in the end (delta: -213.7 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 881.71 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: 62.7 MB). Peak memory consumption was 62.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2252.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 971.1 MB in the end (delta: 113.8 MB). Peak memory consumption was 113.8 MB. Max. memory is 11.5 GB. * Witness Printer took 60.77 ms. Allocated memory is still 1.2 GB. Free memory was 971.1 MB in the beginning and 968.4 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: 1027]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L986] EXPR, FCALL malloc(sizeof(SLL)) VAL [malloc(sizeof(SLL))={15:0}] [L986] SLL* head = malloc(sizeof(SLL)); VAL [head={15:0}, malloc(sizeof(SLL))={15:0}] [L987] FCALL head->next = ((void*)0) VAL [head={15:0}, malloc(sizeof(SLL))={15:0}] [L988] FCALL head->prev = ((void*)0) VAL [head={15:0}, malloc(sizeof(SLL))={15:0}] [L989] FCALL head->data = 0 VAL [head={15:0}, malloc(sizeof(SLL))={15:0}] [L991] SLL* x = head; [L992] int marked = 0; VAL [head={15:0}, malloc(sizeof(SLL))={15:0}, marked=0, x={15:0}] [L995] COND TRUE __VERIFIER_nondet_int() || !marked [L998] EXPR, FCALL malloc(sizeof(SLL)) VAL [head={15:0}, malloc(sizeof(SLL))={15:0}, malloc(sizeof(SLL))={14:0}, marked=0, x={15:0}] [L998] FCALL x->next = malloc(sizeof(SLL)) VAL [head={15:0}, malloc(sizeof(SLL))={15:0}, malloc(sizeof(SLL))={14:0}, marked=0, x={15:0}] [L999] EXPR, FCALL x->next VAL [head={15:0}, malloc(sizeof(SLL))={15:0}, malloc(sizeof(SLL))={14:0}, marked=0, x={15:0}, x->next={14:0}] [L999] FCALL x->next->prev = x VAL [head={15:0}, malloc(sizeof(SLL))={15:0}, malloc(sizeof(SLL))={14:0}, marked=0, x={15:0}, x->next={14:0}] [L1000] EXPR, FCALL x->next VAL [head={15:0}, malloc(sizeof(SLL))={15:0}, malloc(sizeof(SLL))={14:0}, marked=0, x={15:0}, x->next={14:0}] [L1000] x = x->next [L1001] FCALL x->next = ((void*)0) VAL [head={15:0}, malloc(sizeof(SLL))={15:0}, malloc(sizeof(SLL))={14:0}, marked=0, x={14:0}] [L1003] COND TRUE __VERIFIER_nondet_int() [L1005] marked = 1 VAL [head={15:0}, malloc(sizeof(SLL))={15:0}, malloc(sizeof(SLL))={14:0}, marked=1, x={14:0}] [L1008] COND TRUE \read(marked) VAL [head={15:0}, malloc(sizeof(SLL))={15:0}, malloc(sizeof(SLL))={14:0}, marked=1, x={14:0}] [L1009] FCALL x->data = 1 VAL [head={15:0}, malloc(sizeof(SLL))={15:0}, malloc(sizeof(SLL))={14:0}, marked=1, x={14:0}] [L995] COND FALSE !(__VERIFIER_nondet_int() || !marked) [L1014] x = head VAL [head={15:0}, malloc(sizeof(SLL))={15:0}, malloc(sizeof(SLL))={14:0}, marked=1, x={15:0}] [L1016] COND FALSE !(!(((void*)0) != x)) VAL [head={15:0}, malloc(sizeof(SLL))={15:0}, malloc(sizeof(SLL))={14:0}, marked=1, x={15:0}] [L1016] COND FALSE !(0) VAL [head={15:0}, malloc(sizeof(SLL))={15:0}, malloc(sizeof(SLL))={14:0}, marked=1, x={15:0}] [L1017] marked = 0 VAL [head={15:0}, malloc(sizeof(SLL))={15:0}, malloc(sizeof(SLL))={14:0}, marked=0, x={15:0}] [L1019] EXPR, FCALL x->next VAL [head={15:0}, malloc(sizeof(SLL))={15:0}, malloc(sizeof(SLL))={14:0}, marked=0, x={15:0}, x->next={14:0}] [L1019] x->next != ((void*)0) && x->next->data == 0 VAL [head={15:0}, malloc(sizeof(SLL))={15:0}, malloc(sizeof(SLL))={14:0}, marked=0, x={15:0}, x->next={14:0}, x->next != ((void*)0) && x->next->data == 0=1] [L1019] EXPR, FCALL x->next VAL [head={15:0}, malloc(sizeof(SLL))={15:0}, malloc(sizeof(SLL))={14:0}, marked=0, x={15:0}, x->next={14:0}, x->next={14:0}, x->next != ((void*)0) && x->next->data == 0=1] [L1019] EXPR, FCALL x->next->data VAL [head={15:0}, malloc(sizeof(SLL))={15:0}, malloc(sizeof(SLL))={14:0}, marked=0, x={15:0}, x->next={14:0}, x->next={14:0}, x->next != ((void*)0) && x->next->data == 0=1, x->next->data=1] [L1019] x->next != ((void*)0) && x->next->data == 0 VAL [head={15:0}, malloc(sizeof(SLL))={15:0}, malloc(sizeof(SLL))={14:0}, marked=0, x={15:0}, x->next={14:0}, x->next={14:0}, x->next != ((void*)0) && x->next->data == 0=0, x->next->data=1] [L1019] COND FALSE !(x->next != ((void*)0) && x->next->data == 0) [L1024] EXPR, FCALL x->next VAL [head={15:0}, malloc(sizeof(SLL))={15:0}, malloc(sizeof(SLL))={14:0}, marked=0, x={15:0}, x->next={14:0}] [L1024] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1024] x->next != ((void*)0) && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=1, head={15:0}, malloc(sizeof(SLL))={15:0}, malloc(sizeof(SLL))={14:0}, marked=0, x={15:0}, x->next={14:0}, x->next != ((void*)0) && __VERIFIER_nondet_int()=1] [L1024] COND TRUE x->next != ((void*)0) && __VERIFIER_nondet_int() [L1026] EXPR, FCALL x->next VAL [head={15:0}, malloc(sizeof(SLL))={15:0}, malloc(sizeof(SLL))={14:0}, marked=0, x={15:0}, x->next={14:0}] [L1026] x = x->next [L1027] EXPR, FCALL x->data VAL [head={15:0}, malloc(sizeof(SLL))={15:0}, malloc(sizeof(SLL))={14:0}, marked=0, x={14:0}, x->data=1] [L1027] COND TRUE !(x->data != 1) [L1027] __VERIFIER_error() VAL [head={15:0}, malloc(sizeof(SLL))={15:0}, malloc(sizeof(SLL))={14:0}, marked=0, x={14:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 122 locations, 6 error locations. UNSAFE Result, 2.1s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 1.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 449 SDtfs, 578 SDslu, 491 SDs, 0 SdLazy, 215 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=129occurred in iteration=4, traceCheckStatistics: No data available, 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: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 98 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 170 NumberOfCodeBlocks, 170 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 113 ConstructedInterpolants, 0 QuantifiedInterpolants, 10408 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 6/6 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...