./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1_false-unreach-call_false-valid-deref.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_88605ef9-8bed-4e5e-9a85-9003617e1232/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_88605ef9-8bed-4e5e-9a85-9003617e1232/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_88605ef9-8bed-4e5e-9a85-9003617e1232/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_88605ef9-8bed-4e5e-9a85-9003617e1232/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1_false-unreach-call_false-valid-deref.i -s /tmp/vcloud-vcloud-master/worker/working_dir_88605ef9-8bed-4e5e-9a85-9003617e1232/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_88605ef9-8bed-4e5e-9a85-9003617e1232/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 3aee1e8d9b723b18f218b6c1185554e637930c5d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 [2018-11-10 09:20:01,713 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 09:20:01,714 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 09:20:01,722 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 09:20:01,723 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 09:20:01,723 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 09:20:01,724 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 09:20:01,725 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 09:20:01,726 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 09:20:01,727 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 09:20:01,727 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 09:20:01,727 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 09:20:01,728 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 09:20:01,729 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 09:20:01,729 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 09:20:01,730 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 09:20:01,730 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 09:20:01,732 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 09:20:01,733 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 09:20:01,734 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 09:20:01,734 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 09:20:01,735 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 09:20:01,737 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 09:20:01,737 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 09:20:01,737 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 09:20:01,738 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 09:20:01,738 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 09:20:01,739 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 09:20:01,739 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 09:20:01,740 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 09:20:01,740 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 09:20:01,741 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 09:20:01,741 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 09:20:01,741 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 09:20:01,742 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 09:20:01,742 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 09:20:01,742 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_88605ef9-8bed-4e5e-9a85-9003617e1232/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-10 09:20:01,752 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 09:20:01,752 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 09:20:01,753 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 09:20:01,753 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 09:20:01,753 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 09:20:01,754 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 09:20:01,754 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 09:20:01,754 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 09:20:01,754 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 09:20:01,754 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 09:20:01,754 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 09:20:01,754 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 09:20:01,755 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 09:20:01,755 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 09:20:01,755 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 09:20:01,755 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 09:20:01,755 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 09:20:01,755 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 09:20:01,755 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 09:20:01,756 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 09:20:01,756 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 09:20:01,756 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 09:20:01,756 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 09:20:01,756 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 09:20:01,756 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 09:20:01,756 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 09:20:01,757 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 09:20:01,757 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 09:20:01,757 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 09:20:01,757 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_88605ef9-8bed-4e5e-9a85-9003617e1232/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 -> 3aee1e8d9b723b18f218b6c1185554e637930c5d [2018-11-10 09:20:01,779 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 09:20:01,787 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 09:20:01,789 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 09:20:01,790 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 09:20:01,790 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 09:20:01,791 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_88605ef9-8bed-4e5e-9a85-9003617e1232/bin-2019/uautomizer/../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1_false-unreach-call_false-valid-deref.i [2018-11-10 09:20:01,826 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_88605ef9-8bed-4e5e-9a85-9003617e1232/bin-2019/uautomizer/data/fffcd5537/001f1c5e7c4e4e289778fa6ec62c0b9a/FLAG568a075ea [2018-11-10 09:20:02,256 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 09:20:02,256 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_88605ef9-8bed-4e5e-9a85-9003617e1232/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1_false-unreach-call_false-valid-deref.i [2018-11-10 09:20:02,263 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_88605ef9-8bed-4e5e-9a85-9003617e1232/bin-2019/uautomizer/data/fffcd5537/001f1c5e7c4e4e289778fa6ec62c0b9a/FLAG568a075ea [2018-11-10 09:20:02,271 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_88605ef9-8bed-4e5e-9a85-9003617e1232/bin-2019/uautomizer/data/fffcd5537/001f1c5e7c4e4e289778fa6ec62c0b9a [2018-11-10 09:20:02,273 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 09:20:02,274 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 09:20:02,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 09:20:02,275 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 09:20:02,277 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 09:20:02,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 09:20:02" (1/1) ... [2018-11-10 09:20:02,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55a75b68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:20:02, skipping insertion in model container [2018-11-10 09:20:02,279 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 09:20:02" (1/1) ... [2018-11-10 09:20:02,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 09:20:02,310 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 09:20:02,482 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 09:20:02,489 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 09:20:02,514 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 09:20:02,543 INFO L193 MainTranslator]: Completed translation [2018-11-10 09:20:02,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:20:02 WrapperNode [2018-11-10 09:20:02,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 09:20:02,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 09:20:02,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 09:20:02,544 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 09:20:02,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:20:02" (1/1) ... [2018-11-10 09:20:02,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:20:02" (1/1) ... [2018-11-10 09:20:02,605 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:20:02" (1/1) ... [2018-11-10 09:20:02,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:20:02" (1/1) ... [2018-11-10 09:20:02,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:20:02" (1/1) ... [2018-11-10 09:20:02,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:20:02" (1/1) ... [2018-11-10 09:20:02,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:20:02" (1/1) ... [2018-11-10 09:20:02,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 09:20:02,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 09:20:02,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 09:20:02,629 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 09:20:02,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:20:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_88605ef9-8bed-4e5e-9a85-9003617e1232/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 [2018-11-10 09:20:02,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 09:20:02,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 09:20:02,675 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 09:20:02,675 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-10 09:20:02,675 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-10 09:20:02,675 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-10 09:20:02,675 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-10 09:20:02,676 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-10 09:20:02,676 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-10 09:20:02,676 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-10 09:20:02,676 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-10 09:20:02,676 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-10 09:20:02,676 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-10 09:20:02,676 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-10 09:20:02,676 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-10 09:20:02,676 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-10 09:20:02,677 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-10 09:20:02,677 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-10 09:20:02,677 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-10 09:20:02,677 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-10 09:20:02,677 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-10 09:20:02,677 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-10 09:20:02,677 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-10 09:20:02,677 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-10 09:20:02,677 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-10 09:20:02,677 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-10 09:20:02,678 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-10 09:20:02,678 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-10 09:20:02,678 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-10 09:20:02,678 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-10 09:20:02,678 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-10 09:20:02,678 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-10 09:20:02,678 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-10 09:20:02,678 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-10 09:20:02,678 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-10 09:20:02,678 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-10 09:20:02,678 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-10 09:20:02,679 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-10 09:20:02,679 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-10 09:20:02,679 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-10 09:20:02,679 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-10 09:20:02,679 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-10 09:20:02,679 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-10 09:20:02,679 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-10 09:20:02,679 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-10 09:20:02,679 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-10 09:20:02,679 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-10 09:20:02,680 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-10 09:20:02,680 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-10 09:20:02,680 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-10 09:20:02,680 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-10 09:20:02,680 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-10 09:20:02,680 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-10 09:20:02,680 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-10 09:20:02,680 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-10 09:20:02,680 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-10 09:20:02,680 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-10 09:20:02,681 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-10 09:20:02,681 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-10 09:20:02,681 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-10 09:20:02,681 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-10 09:20:02,681 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2018-11-10 09:20:02,681 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-10 09:20:02,681 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-10 09:20:02,681 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2018-11-10 09:20:02,681 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-10 09:20:02,681 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-10 09:20:02,681 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2018-11-10 09:20:02,682 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-10 09:20:02,682 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-10 09:20:02,682 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-10 09:20:02,682 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-10 09:20:02,682 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-10 09:20:02,682 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-10 09:20:02,682 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-10 09:20:02,682 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-10 09:20:02,682 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-10 09:20:02,682 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-10 09:20:02,683 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-10 09:20:02,683 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-10 09:20:02,683 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-10 09:20:02,683 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-10 09:20:02,683 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-10 09:20:02,683 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-10 09:20:02,683 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-10 09:20:02,683 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-10 09:20:02,683 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-10 09:20:02,683 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-10 09:20:02,684 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-10 09:20:02,684 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-10 09:20:02,684 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-10 09:20:02,684 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-10 09:20:02,684 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-10 09:20:02,684 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-10 09:20:02,684 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-10 09:20:02,684 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-10 09:20:02,684 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-10 09:20:02,684 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-10 09:20:02,684 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-10 09:20:02,685 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-10 09:20:02,685 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-10 09:20:02,685 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-10 09:20:02,685 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-10 09:20:02,685 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-10 09:20:02,685 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-10 09:20:02,685 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-10 09:20:02,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-10 09:20:02,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 09:20:02,685 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 09:20:02,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-10 09:20:02,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-10 09:20:02,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-10 09:20:02,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-10 09:20:02,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-10 09:20:02,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-10 09:20:02,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 09:20:02,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 09:20:02,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-10 09:20:03,033 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 09:20:03,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 09:20:03 BoogieIcfgContainer [2018-11-10 09:20:03,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 09:20:03,034 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 09:20:03,034 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 09:20:03,037 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 09:20:03,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 09:20:02" (1/3) ... [2018-11-10 09:20:03,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cf9d3bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 09:20:03, skipping insertion in model container [2018-11-10 09:20:03,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:20:02" (2/3) ... [2018-11-10 09:20:03,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cf9d3bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 09:20:03, skipping insertion in model container [2018-11-10 09:20:03,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 09:20:03" (3/3) ... [2018-11-10 09:20:03,040 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1_false-unreach-call_false-valid-deref.i [2018-11-10 09:20:03,047 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 09:20:03,054 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-11-10 09:20:03,066 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-11-10 09:20:03,090 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 09:20:03,091 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 09:20:03,091 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 09:20:03,091 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 09:20:03,091 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 09:20:03,091 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 09:20:03,091 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 09:20:03,091 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 09:20:03,091 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 09:20:03,106 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states. [2018-11-10 09:20:03,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-10 09:20:03,111 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 09:20:03,111 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 09:20:03,113 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 09:20:03,118 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:20:03,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1492464586, now seen corresponding path program 1 times [2018-11-10 09:20:03,120 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 09:20:03,120 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 09:20:03,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:20:03,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:20:03,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:20:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:20:03,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 09:20:03,211 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 09:20:03,212 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 09:20:03,215 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 09:20:03,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 09:20:03,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 09:20:03,229 INFO L87 Difference]: Start difference. First operand 75 states. Second operand 2 states. [2018-11-10 09:20:03,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 09:20:03,242 INFO L93 Difference]: Finished difference Result 122 states and 153 transitions. [2018-11-10 09:20:03,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 09:20:03,243 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2018-11-10 09:20:03,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 09:20:03,251 INFO L225 Difference]: With dead ends: 122 [2018-11-10 09:20:03,251 INFO L226 Difference]: Without dead ends: 56 [2018-11-10 09:20:03,254 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 [2018-11-10 09:20:03,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-11-10 09:20:03,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-11-10 09:20:03,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-11-10 09:20:03,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2018-11-10 09:20:03,280 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 15 [2018-11-10 09:20:03,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 09:20:03,280 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2018-11-10 09:20:03,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 09:20:03,280 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2018-11-10 09:20:03,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-10 09:20:03,280 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 09:20:03,281 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 09:20:03,281 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 09:20:03,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:20:03,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1086574544, now seen corresponding path program 1 times [2018-11-10 09:20:03,281 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 09:20:03,281 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 09:20:03,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:20:03,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:20:03,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:20:03,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:20:03,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 09:20:03,340 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 09:20:03,340 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 09:20:03,341 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 09:20:03,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 09:20:03,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 09:20:03,342 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 5 states. [2018-11-10 09:20:03,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 09:20:03,456 INFO L93 Difference]: Finished difference Result 78 states and 83 transitions. [2018-11-10 09:20:03,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 09:20:03,457 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-11-10 09:20:03,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 09:20:03,458 INFO L225 Difference]: With dead ends: 78 [2018-11-10 09:20:03,458 INFO L226 Difference]: Without dead ends: 76 [2018-11-10 09:20:03,459 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 [2018-11-10 09:20:03,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-11-10 09:20:03,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 54. [2018-11-10 09:20:03,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-11-10 09:20:03,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2018-11-10 09:20:03,464 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 17 [2018-11-10 09:20:03,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 09:20:03,464 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2018-11-10 09:20:03,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 09:20:03,464 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2018-11-10 09:20:03,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-10 09:20:03,465 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 09:20:03,465 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 09:20:03,465 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 09:20:03,466 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:20:03,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1872540533, now seen corresponding path program 1 times [2018-11-10 09:20:03,466 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 09:20:03,466 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 09:20:03,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:20:03,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:20:03,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:20:03,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:20:03,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 09:20:03,568 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 09:20:03,568 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-10 09:20:03,568 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-10 09:20:03,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-10 09:20:03,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-11-10 09:20:03,568 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 7 states. [2018-11-10 09:20:03,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 09:20:03,811 INFO L93 Difference]: Finished difference Result 106 states and 113 transitions. [2018-11-10 09:20:03,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 09:20:03,811 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2018-11-10 09:20:03,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 09:20:03,812 INFO L225 Difference]: With dead ends: 106 [2018-11-10 09:20:03,812 INFO L226 Difference]: Without dead ends: 104 [2018-11-10 09:20:03,813 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-11-10 09:20:03,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-11-10 09:20:03,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 72. [2018-11-10 09:20:03,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-11-10 09:20:03,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2018-11-10 09:20:03,818 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 21 [2018-11-10 09:20:03,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 09:20:03,818 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 77 transitions. [2018-11-10 09:20:03,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-10 09:20:03,818 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions. [2018-11-10 09:20:03,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-10 09:20:03,818 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 09:20:03,819 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-10 09:20:03,819 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 09:20:03,819 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:20:03,819 INFO L82 PathProgramCache]: Analyzing trace with hash -548153559, now seen corresponding path program 1 times [2018-11-10 09:20:03,819 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 09:20:03,819 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 09:20:03,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:20:03,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:20:03,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:20:03,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 09:20:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 09:20:03,859 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 09:20:03,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 09:20:03 BoogieIcfgContainer [2018-11-10 09:20:03,881 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 09:20:03,882 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 09:20:03,882 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 09:20:03,882 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 09:20:03,883 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 09:20:03" (3/4) ... [2018-11-10 09:20:03,885 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-10 09:20:03,917 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_88605ef9-8bed-4e5e-9a85-9003617e1232/bin-2019/uautomizer/witness.graphml [2018-11-10 09:20:03,917 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 09:20:03,918 INFO L168 Benchmark]: Toolchain (without parser) took 1644.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 952.1 MB in the beginning and 1.0 GB in the end (delta: -68.8 MB). Peak memory consumption was 88.0 MB. Max. memory is 11.5 GB. [2018-11-10 09:20:03,919 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 09:20:03,920 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.36 ms. Allocated memory is still 1.0 GB. Free memory was 952.1 MB in the beginning and 928.0 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. [2018-11-10 09:20:03,921 INFO L168 Benchmark]: Boogie Preprocessor took 84.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 928.0 MB in the beginning and 1.2 GB in the end (delta: -222.8 MB). Peak memory consumption was 15.9 MB. Max. memory is 11.5 GB. [2018-11-10 09:20:03,921 INFO L168 Benchmark]: RCFGBuilder took 405.19 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 49.4 MB). Peak memory consumption was 49.4 MB. Max. memory is 11.5 GB. [2018-11-10 09:20:03,922 INFO L168 Benchmark]: TraceAbstraction took 847.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 80.5 MB). Peak memory consumption was 80.5 MB. Max. memory is 11.5 GB. [2018-11-10 09:20:03,922 INFO L168 Benchmark]: Witness Printer took 35.48 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 09:20:03,926 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 269.36 ms. Allocated memory is still 1.0 GB. Free memory was 952.1 MB in the beginning and 928.0 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 84.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 928.0 MB in the beginning and 1.2 GB in the end (delta: -222.8 MB). Peak memory consumption was 15.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 405.19 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 49.4 MB). Peak memory consumption was 49.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 847.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 80.5 MB). Peak memory consumption was 80.5 MB. Max. memory is 11.5 GB. * Witness Printer took 35.48 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1038]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L995] EXPR, FCALL malloc(sizeof(SLL)) VAL [malloc(sizeof(SLL))={10:0}] [L995] SLL* list = malloc(sizeof(SLL)); VAL [list={10:0}, malloc(sizeof(SLL))={10:0}] [L996] FCALL list->next = ((void*)0) VAL [list={10:0}, malloc(sizeof(SLL))={10:0}] [L997] FCALL list->colour = BLACK VAL [list={10:0}, malloc(sizeof(SLL))={10:0}] [L999] SLL* end = list; VAL [end={10:0}, list={10:0}, malloc(sizeof(SLL))={10:0}] [L1002] COND FALSE !(__VERIFIER_nondet_int()) [L1023] end = ((void*)0) [L1024] end = list VAL [end={10:0}, list={10:0}, malloc(sizeof(SLL))={10:0}] [L1027] COND FALSE !(!(((void*)0) != end)) VAL [end={10:0}, list={10:0}, malloc(sizeof(SLL))={10:0}] [L1027] COND FALSE !(0) VAL [end={10:0}, list={10:0}, malloc(sizeof(SLL))={10:0}] [L1028] EXPR, FCALL end->colour VAL [end={10:0}, end->colour=1, list={10:0}, malloc(sizeof(SLL))={10:0}] [L1028] COND FALSE !(!(BLACK == end->colour)) [L1028] COND FALSE !(0) VAL [end={10:0}, list={10:0}, malloc(sizeof(SLL))={10:0}] [L1030] COND TRUE ((void*)0) != end VAL [end={10:0}, list={10:0}, malloc(sizeof(SLL))={10:0}] [L1032] EXPR, FCALL end->colour VAL [end={10:0}, end->colour=1, list={10:0}, malloc(sizeof(SLL))={10:0}] [L1032] COND FALSE !(RED == end->colour) [L1038] EXPR, FCALL end->next VAL [end={10:0}, end->next={0:0}, list={10:0}, malloc(sizeof(SLL))={10:0}] [L1038] COND TRUE !(end->next) [L1038] __VERIFIER_error() VAL [end={10:0}, list={10:0}, malloc(sizeof(SLL))={10:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 75 locations, 3 error locations. UNSAFE Result, 0.7s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 163 SDtfs, 440 SDslu, 148 SDs, 0 SdLazy, 104 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=0, 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, 3 MinimizatonAttempts, 54 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 3492 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...