./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/forester-heap/sll-circular_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_55a333fd-4566-4304-bb27-c1e8b820df02/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_55a333fd-4566-4304-bb27-c1e8b820df02/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_55a333fd-4566-4304-bb27-c1e8b820df02/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_55a333fd-4566-4304-bb27-c1e8b820df02/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-circular_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_55a333fd-4566-4304-bb27-c1e8b820df02/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_55a333fd-4566-4304-bb27-c1e8b820df02/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 b651d63eb42259dfd3a213a6671e4c58ee528ad0 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 13:15:22,918 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 13:15:22,919 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 13:15:22,926 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 13:15:22,926 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 13:15:22,927 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 13:15:22,928 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 13:15:22,929 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 13:15:22,930 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 13:15:22,931 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 13:15:22,932 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 13:15:22,932 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 13:15:22,933 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 13:15:22,933 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 13:15:22,934 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 13:15:22,934 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 13:15:22,935 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 13:15:22,935 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 13:15:22,937 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 13:15:22,938 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 13:15:22,938 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 13:15:22,939 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 13:15:22,941 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 13:15:22,941 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 13:15:22,941 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 13:15:22,942 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 13:15:22,943 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 13:15:22,943 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 13:15:22,944 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 13:15:22,944 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 13:15:22,944 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 13:15:22,945 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 13:15:22,945 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 13:15:22,945 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 13:15:22,946 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 13:15:22,946 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 13:15:22,946 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_55a333fd-4566-4304-bb27-c1e8b820df02/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-10 13:15:22,953 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 13:15:22,953 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 13:15:22,954 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 13:15:22,954 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 13:15:22,954 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 13:15:22,954 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 13:15:22,955 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 13:15:22,955 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 13:15:22,955 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 13:15:22,955 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 13:15:22,955 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 13:15:22,955 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 13:15:22,955 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 13:15:22,956 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 13:15:22,956 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 13:15:22,956 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 13:15:22,956 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 13:15:22,956 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 13:15:22,956 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 13:15:22,956 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 13:15:22,956 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 13:15:22,957 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 13:15:22,957 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 13:15:22,957 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 13:15:22,957 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 13:15:22,957 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 13:15:22,957 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 13:15:22,957 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 13:15:22,957 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 13:15:22,958 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_55a333fd-4566-4304-bb27-c1e8b820df02/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 -> b651d63eb42259dfd3a213a6671e4c58ee528ad0 [2018-11-10 13:15:22,982 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 13:15:22,991 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 13:15:22,994 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 13:15:22,995 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 13:15:22,995 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 13:15:22,996 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_55a333fd-4566-4304-bb27-c1e8b820df02/bin-2019/uautomizer/../../sv-benchmarks/c/forester-heap/sll-circular_false-unreach-call_false-valid-memcleanup.i [2018-11-10 13:15:23,044 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_55a333fd-4566-4304-bb27-c1e8b820df02/bin-2019/uautomizer/data/ef60a4d0d/b3f08d0074b84924a913820780ae2102/FLAGc1a24c264 [2018-11-10 13:15:23,468 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 13:15:23,469 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_55a333fd-4566-4304-bb27-c1e8b820df02/sv-benchmarks/c/forester-heap/sll-circular_false-unreach-call_false-valid-memcleanup.i [2018-11-10 13:15:23,475 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_55a333fd-4566-4304-bb27-c1e8b820df02/bin-2019/uautomizer/data/ef60a4d0d/b3f08d0074b84924a913820780ae2102/FLAGc1a24c264 [2018-11-10 13:15:23,485 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_55a333fd-4566-4304-bb27-c1e8b820df02/bin-2019/uautomizer/data/ef60a4d0d/b3f08d0074b84924a913820780ae2102 [2018-11-10 13:15:23,488 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 13:15:23,489 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 13:15:23,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 13:15:23,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 13:15:23,493 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 13:15:23,494 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 01:15:23" (1/1) ... [2018-11-10 13:15:23,496 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f9bb135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:15:23, skipping insertion in model container [2018-11-10 13:15:23,496 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 01:15:23" (1/1) ... [2018-11-10 13:15:23,504 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 13:15:23,536 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 13:15:23,714 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 13:15:23,722 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 13:15:23,748 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 13:15:23,780 INFO L193 MainTranslator]: Completed translation [2018-11-10 13:15:23,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:15:23 WrapperNode [2018-11-10 13:15:23,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 13:15:23,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 13:15:23,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 13:15:23,781 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 13:15:23,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:15:23" (1/1) ... [2018-11-10 13:15:23,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:15:23" (1/1) ... [2018-11-10 13:15:23,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:15:23" (1/1) ... [2018-11-10 13:15:23,850 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:15:23" (1/1) ... [2018-11-10 13:15:23,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:15:23" (1/1) ... [2018-11-10 13:15:23,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:15:23" (1/1) ... [2018-11-10 13:15:23,868 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:15:23" (1/1) ... [2018-11-10 13:15:23,872 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 13:15:23,873 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 13:15:23,873 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 13:15:23,873 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 13:15:23,874 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:15:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_55a333fd-4566-4304-bb27-c1e8b820df02/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 13:15:23,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 13:15:23,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 13:15:23,927 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 13:15:23,927 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-10 13:15:23,927 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-10 13:15:23,927 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-10 13:15:23,927 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-10 13:15:23,928 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-10 13:15:23,928 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-10 13:15:23,928 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-10 13:15:23,928 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-10 13:15:23,928 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-10 13:15:23,928 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-10 13:15:23,928 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-10 13:15:23,929 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-10 13:15:23,929 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-10 13:15:23,929 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-10 13:15:23,929 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-10 13:15:23,929 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-10 13:15:23,929 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-10 13:15:23,929 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-10 13:15:23,929 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-10 13:15:23,930 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-10 13:15:23,930 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-10 13:15:23,930 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-10 13:15:23,930 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-10 13:15:23,930 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-10 13:15:23,930 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-10 13:15:23,930 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-10 13:15:23,930 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-10 13:15:23,930 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-10 13:15:23,930 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-10 13:15:23,931 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-10 13:15:23,931 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-10 13:15:23,931 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-10 13:15:23,931 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-10 13:15:23,931 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-10 13:15:23,931 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-10 13:15:23,931 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-10 13:15:23,931 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-10 13:15:23,931 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-10 13:15:23,932 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-10 13:15:23,932 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-10 13:15:23,932 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-10 13:15:23,932 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-10 13:15:23,932 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-10 13:15:23,932 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-10 13:15:23,932 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-10 13:15:23,932 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-10 13:15:23,933 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-10 13:15:23,933 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-10 13:15:23,933 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-10 13:15:23,933 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-10 13:15:23,933 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-10 13:15:23,933 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-10 13:15:23,933 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-10 13:15:23,933 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-10 13:15:23,934 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-10 13:15:23,934 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-10 13:15:23,934 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-10 13:15:23,934 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-10 13:15:23,934 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2018-11-10 13:15:23,934 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-10 13:15:23,934 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-10 13:15:23,934 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2018-11-10 13:15:23,934 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-10 13:15:23,935 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-10 13:15:23,935 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2018-11-10 13:15:23,935 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-10 13:15:23,935 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-10 13:15:23,935 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-10 13:15:23,935 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-10 13:15:23,935 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-10 13:15:23,935 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-10 13:15:23,936 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-10 13:15:23,936 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-10 13:15:23,936 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-10 13:15:23,936 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-10 13:15:23,936 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-10 13:15:23,936 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-10 13:15:23,936 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-10 13:15:23,936 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-10 13:15:23,937 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-10 13:15:23,937 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-10 13:15:23,937 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-10 13:15:23,937 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-10 13:15:23,937 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-10 13:15:23,937 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-10 13:15:23,937 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-10 13:15:23,937 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-10 13:15:23,938 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-10 13:15:23,938 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-10 13:15:23,938 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-10 13:15:23,938 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-10 13:15:23,938 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-10 13:15:23,938 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-10 13:15:23,938 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-10 13:15:23,938 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-10 13:15:23,938 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-10 13:15:23,939 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-10 13:15:23,939 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-10 13:15:23,939 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-10 13:15:23,939 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-10 13:15:23,939 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-10 13:15:23,939 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-10 13:15:23,939 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-10 13:15:23,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-10 13:15:23,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 13:15:23,940 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 13:15:23,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-10 13:15:23,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-10 13:15:23,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-10 13:15:23,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-10 13:15:23,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-10 13:15:23,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-10 13:15:23,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 13:15:23,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 13:15:23,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-10 13:15:24,281 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 13:15:24,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 01:15:24 BoogieIcfgContainer [2018-11-10 13:15:24,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 13:15:24,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 13:15:24,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 13:15:24,285 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 13:15:24,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 01:15:23" (1/3) ... [2018-11-10 13:15:24,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55668d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 01:15:24, skipping insertion in model container [2018-11-10 13:15:24,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:15:23" (2/3) ... [2018-11-10 13:15:24,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55668d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 01:15:24, skipping insertion in model container [2018-11-10 13:15:24,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 01:15:24" (3/3) ... [2018-11-10 13:15:24,288 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-circular_false-unreach-call_false-valid-memcleanup.i [2018-11-10 13:15:24,295 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 13:15:24,302 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-11-10 13:15:24,315 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-11-10 13:15:24,342 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 13:15:24,343 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 13:15:24,343 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 13:15:24,343 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 13:15:24,344 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 13:15:24,344 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 13:15:24,344 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 13:15:24,344 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 13:15:24,344 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 13:15:24,359 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2018-11-10 13:15:24,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-10 13:15:24,364 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 13:15:24,365 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 13:15:24,366 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 13:15:24,371 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 13:15:24,372 INFO L82 PathProgramCache]: Analyzing trace with hash 271725251, now seen corresponding path program 1 times [2018-11-10 13:15:24,373 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 13:15:24,374 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 13:15:24,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:15:24,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 13:15:24,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:15:24,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 13:15:24,487 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 13:15:24,489 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 13:15:24,489 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 13:15:24,492 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 13:15:24,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 13:15:24,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 13:15:24,506 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 2 states. [2018-11-10 13:15:24,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 13:15:24,520 INFO L93 Difference]: Finished difference Result 126 states and 162 transitions. [2018-11-10 13:15:24,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 13:15:24,521 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-11-10 13:15:24,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 13:15:24,527 INFO L225 Difference]: With dead ends: 126 [2018-11-10 13:15:24,527 INFO L226 Difference]: Without dead ends: 54 [2018-11-10 13:15:24,529 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 13:15:24,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-11-10 13:15:24,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-11-10 13:15:24,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-11-10 13:15:24,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2018-11-10 13:15:24,551 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 17 [2018-11-10 13:15:24,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 13:15:24,551 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2018-11-10 13:15:24,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 13:15:24,551 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2018-11-10 13:15:24,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-10 13:15:24,552 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 13:15:24,552 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 13:15:24,552 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 13:15:24,552 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 13:15:24,552 INFO L82 PathProgramCache]: Analyzing trace with hash 185999249, now seen corresponding path program 1 times [2018-11-10 13:15:24,552 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 13:15:24,552 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 13:15:24,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:15:24,554 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 13:15:24,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:15:24,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 13:15:24,652 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 13:15:24,653 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 13:15:24,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-10 13:15:24,654 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-10 13:15:24,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-10 13:15:24,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-10 13:15:24,655 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 7 states. [2018-11-10 13:15:24,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 13:15:24,841 INFO L93 Difference]: Finished difference Result 105 states and 113 transitions. [2018-11-10 13:15:24,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 13:15:24,841 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-11-10 13:15:24,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 13:15:24,842 INFO L225 Difference]: With dead ends: 105 [2018-11-10 13:15:24,843 INFO L226 Difference]: Without dead ends: 103 [2018-11-10 13:15:24,843 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2018-11-10 13:15:24,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-11-10 13:15:24,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 62. [2018-11-10 13:15:24,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-11-10 13:15:24,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2018-11-10 13:15:24,850 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 19 [2018-11-10 13:15:24,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 13:15:24,851 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2018-11-10 13:15:24,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-10 13:15:24,851 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2018-11-10 13:15:24,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-10 13:15:24,851 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 13:15:24,852 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] [2018-11-10 13:15:24,852 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 13:15:24,852 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 13:15:24,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1737727940, now seen corresponding path program 1 times [2018-11-10 13:15:24,852 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 13:15:24,852 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 13:15:24,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:15:24,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 13:15:24,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:15:24,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 13:15:24,907 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 13:15:24,907 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 13:15:24,908 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-10 13:15:24,908 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-10 13:15:24,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-10 13:15:24,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-10 13:15:24,908 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand 6 states. [2018-11-10 13:15:25,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 13:15:25,031 INFO L93 Difference]: Finished difference Result 85 states and 92 transitions. [2018-11-10 13:15:25,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 13:15:25,032 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-11-10 13:15:25,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 13:15:25,032 INFO L225 Difference]: With dead ends: 85 [2018-11-10 13:15:25,033 INFO L226 Difference]: Without dead ends: 83 [2018-11-10 13:15:25,033 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-11-10 13:15:25,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-11-10 13:15:25,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 60. [2018-11-10 13:15:25,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-11-10 13:15:25,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2018-11-10 13:15:25,039 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 24 [2018-11-10 13:15:25,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 13:15:25,039 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2018-11-10 13:15:25,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-10 13:15:25,039 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2018-11-10 13:15:25,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-10 13:15:25,040 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 13:15:25,040 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] [2018-11-10 13:15:25,040 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 13:15:25,041 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 13:15:25,041 INFO L82 PathProgramCache]: Analyzing trace with hash 2050876405, now seen corresponding path program 1 times [2018-11-10 13:15:25,041 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 13:15:25,041 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 13:15:25,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:15:25,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 13:15:25,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:15:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 13:15:25,071 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 13:15:25,071 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 13:15:25,071 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 13:15:25,072 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 13:15:25,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 13:15:25,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 13:15:25,072 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand 3 states. [2018-11-10 13:15:25,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 13:15:25,094 INFO L93 Difference]: Finished difference Result 143 states and 158 transitions. [2018-11-10 13:15:25,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 13:15:25,094 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2018-11-10 13:15:25,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 13:15:25,096 INFO L225 Difference]: With dead ends: 143 [2018-11-10 13:15:25,096 INFO L226 Difference]: Without dead ends: 101 [2018-11-10 13:15:25,097 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 [2018-11-10 13:15:25,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-11-10 13:15:25,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 75. [2018-11-10 13:15:25,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-11-10 13:15:25,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 83 transitions. [2018-11-10 13:15:25,104 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 83 transitions. Word has length 28 [2018-11-10 13:15:25,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 13:15:25,105 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 83 transitions. [2018-11-10 13:15:25,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 13:15:25,105 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 83 transitions. [2018-11-10 13:15:25,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-10 13:15:25,106 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 13:15:25,106 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 13:15:25,106 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 13:15:25,106 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 13:15:25,106 INFO L82 PathProgramCache]: Analyzing trace with hash -112729307, now seen corresponding path program 1 times [2018-11-10 13:15:25,107 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 13:15:25,107 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 13:15:25,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:15:25,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 13:15:25,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:15:25,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 13:15:25,340 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 13:15:25,340 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 13:15:25,341 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-11-10 13:15:25,341 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-10 13:15:25,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-10 13:15:25,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-11-10 13:15:25,341 INFO L87 Difference]: Start difference. First operand 75 states and 83 transitions. Second operand 12 states. [2018-11-10 13:15:25,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 13:15:25,619 INFO L93 Difference]: Finished difference Result 132 states and 143 transitions. [2018-11-10 13:15:25,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-10 13:15:25,620 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2018-11-10 13:15:25,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 13:15:25,620 INFO L225 Difference]: With dead ends: 132 [2018-11-10 13:15:25,621 INFO L226 Difference]: Without dead ends: 114 [2018-11-10 13:15:25,621 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2018-11-10 13:15:25,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-11-10 13:15:25,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 84. [2018-11-10 13:15:25,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-11-10 13:15:25,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 92 transitions. [2018-11-10 13:15:25,629 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 92 transitions. Word has length 29 [2018-11-10 13:15:25,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 13:15:25,629 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 92 transitions. [2018-11-10 13:15:25,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-10 13:15:25,629 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 92 transitions. [2018-11-10 13:15:25,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-10 13:15:25,630 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 13:15:25,631 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] [2018-11-10 13:15:25,631 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 13:15:25,632 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 13:15:25,632 INFO L82 PathProgramCache]: Analyzing trace with hash 598706100, now seen corresponding path program 1 times [2018-11-10 13:15:25,632 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 13:15:25,632 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 13:15:25,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:15:25,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 13:15:25,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:15:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 13:15:25,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 13:15:25,779 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 13:15:25,779 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_55a333fd-4566-4304-bb27-c1e8b820df02/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 13:15:25,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 13:15:25,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 13:15:25,803 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 13:15:25,830 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-11-10 13:15:25,831 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-10 13:15:25,832 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 13:15:25,833 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-11-10 13:15:25,850 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 13:15:25,852 INFO L700 Elim1Store]: detected not equals via solver [2018-11-10 13:15:25,852 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-11-10 13:15:25,852 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-10 13:15:25,856 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 13:15:25,856 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:15 [2018-11-10 13:15:25,863 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-10 13:15:25,864 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-10 13:15:25,864 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 13:15:25,866 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 13:15:25,874 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 13:15:25,874 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:23 [2018-11-10 13:15:25,923 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2018-11-10 13:15:25,925 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-11-10 13:15:25,925 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 13:15:25,928 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 13:15:25,932 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-10 13:15:25,932 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:36, output treesize:28 [2018-11-10 13:15:25,968 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2018-11-10 13:15:25,970 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 9 [2018-11-10 13:15:25,970 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 13:15:25,974 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 1 [2018-11-10 13:15:25,974 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-10 13:15:25,976 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 13:15:25,978 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 13:15:25,978 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:35, output treesize:4 [2018-11-10 13:15:25,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 13:15:26,014 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 13:15:26,014 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 16 [2018-11-10 13:15:26,014 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-10 13:15:26,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-10 13:15:26,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2018-11-10 13:15:26,015 INFO L87 Difference]: Start difference. First operand 84 states and 92 transitions. Second operand 16 states. [2018-11-10 13:15:26,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 13:15:26,330 INFO L93 Difference]: Finished difference Result 160 states and 173 transitions. [2018-11-10 13:15:26,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-10 13:15:26,331 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 33 [2018-11-10 13:15:26,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 13:15:26,331 INFO L225 Difference]: With dead ends: 160 [2018-11-10 13:15:26,331 INFO L226 Difference]: Without dead ends: 158 [2018-11-10 13:15:26,332 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 25 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=152, Invalid=550, Unknown=0, NotChecked=0, Total=702 [2018-11-10 13:15:26,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-11-10 13:15:26,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 111. [2018-11-10 13:15:26,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-11-10 13:15:26,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 122 transitions. [2018-11-10 13:15:26,341 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 122 transitions. Word has length 33 [2018-11-10 13:15:26,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 13:15:26,341 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 122 transitions. [2018-11-10 13:15:26,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-10 13:15:26,341 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 122 transitions. [2018-11-10 13:15:26,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-10 13:15:26,342 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 13:15:26,342 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, 1, 1, 1, 1] [2018-11-10 13:15:26,343 INFO L424 AbstractCegarLoop]: === Iteration 7 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 13:15:26,343 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 13:15:26,343 INFO L82 PathProgramCache]: Analyzing trace with hash 832283681, now seen corresponding path program 1 times [2018-11-10 13:15:26,343 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 13:15:26,343 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 13:15:26,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:15:26,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 13:15:26,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:15:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 13:15:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 13:15:26,382 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 13:15:26,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 01:15:26 BoogieIcfgContainer [2018-11-10 13:15:26,408 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 13:15:26,408 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 13:15:26,408 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 13:15:26,408 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 13:15:26,409 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 01:15:24" (3/4) ... [2018-11-10 13:15:26,410 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-10 13:15:26,442 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_55a333fd-4566-4304-bb27-c1e8b820df02/bin-2019/uautomizer/witness.graphml [2018-11-10 13:15:26,443 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 13:15:26,443 INFO L168 Benchmark]: Toolchain (without parser) took 2955.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 957.6 MB in the beginning and 989.7 MB in the end (delta: -32.0 MB). Peak memory consumption was 109.5 MB. Max. memory is 11.5 GB. [2018-11-10 13:15:26,444 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 13:15:26,444 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.26 ms. Allocated memory is still 1.0 GB. Free memory was 957.6 MB in the beginning and 932.4 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. [2018-11-10 13:15:26,445 INFO L168 Benchmark]: Boogie Preprocessor took 91.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 932.4 MB in the beginning and 1.1 GB in the end (delta: -205.9 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB. [2018-11-10 13:15:26,445 INFO L168 Benchmark]: RCFGBuilder took 408.85 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: 54.7 MB). Peak memory consumption was 54.7 MB. Max. memory is 11.5 GB. [2018-11-10 13:15:26,446 INFO L168 Benchmark]: TraceAbstraction took 2125.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 993.1 MB in the end (delta: 90.5 MB). Peak memory consumption was 90.5 MB. Max. memory is 11.5 GB. [2018-11-10 13:15:26,446 INFO L168 Benchmark]: Witness Printer took 34.43 ms. Allocated memory is still 1.2 GB. Free memory was 993.1 MB in the beginning and 989.7 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2018-11-10 13:15:26,449 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 291.26 ms. Allocated memory is still 1.0 GB. Free memory was 957.6 MB in the beginning and 932.4 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 91.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 932.4 MB in the beginning and 1.1 GB in the end (delta: -205.9 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 408.85 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: 54.7 MB). Peak memory consumption was 54.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2125.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 993.1 MB in the end (delta: 90.5 MB). Peak memory consumption was 90.5 MB. Max. memory is 11.5 GB. * Witness Printer took 34.43 ms. Allocated memory is still 1.2 GB. Free memory was 993.1 MB in the beginning and 989.7 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1021]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L985] EXPR, FCALL malloc(sizeof(SLL)) VAL [malloc(sizeof(SLL))={10:0}] [L985] SLL* head = malloc(sizeof(SLL)); VAL [head={10:0}, malloc(sizeof(SLL))={10:0}] [L986] FCALL head->next = head VAL [head={10:0}, malloc(sizeof(SLL))={10:0}] [L987] FCALL head->data = 0 VAL [head={10:0}, malloc(sizeof(SLL))={10:0}] [L989] SLL* x = head; [L990] int state = 1; VAL [head={10:0}, malloc(sizeof(SLL))={10:0}, state=1, x={10:0}] [L993] COND FALSE !(__VERIFIER_nondet_int()) [L1014] FCALL x->data = state VAL [head={10:0}, malloc(sizeof(SLL))={10:0}, state=1, x={10:0}] [L1016] EXPR, FCALL head->next VAL [head={10:0}, head->next={10:0}, malloc(sizeof(SLL))={10:0}, state=1, x={10:0}] [L1016] x = head->next [L1017] COND FALSE !(!(((void*)0) != x)) VAL [head={10:0}, malloc(sizeof(SLL))={10:0}, state=1, x={10:0}] [L1017] COND FALSE !(0) VAL [head={10:0}, malloc(sizeof(SLL))={10:0}, state=1, x={10:0}] [L1019] EXPR, FCALL x->data VAL [head={10:0}, malloc(sizeof(SLL))={10:0}, state=1, x={10:0}, x->data=1] [L1019] COND TRUE x->data != 0 [L1021] EXPR, FCALL x->next VAL [head={10:0}, malloc(sizeof(SLL))={10:0}, state=1, x={10:0}, x->next={10:0}] [L1021] EXPR, FCALL x->next->data VAL [head={10:0}, malloc(sizeof(SLL))={10:0}, state=1, x={10:0}, x->next={10:0}, x->next->data=1] [L1021] EXPR x->next->data != 0 && x->data > x->next->data VAL [head={10:0}, malloc(sizeof(SLL))={10:0}, state=1, x={10:0}, x->next={10:0}, x->next->data=1, x->next->data != 0 && x->data > x->next->data=1] [L1021] EXPR, FCALL x->data VAL [head={10:0}, malloc(sizeof(SLL))={10:0}, state=1, x={10:0}, x->data=1, x->next={10:0}, x->next->data=1, x->next->data != 0 && x->data > x->next->data=1] [L1021] EXPR, FCALL x->next VAL [head={10:0}, malloc(sizeof(SLL))={10:0}, state=1, x={10:0}, x->data=1, x->next={10:0}, x->next={10:0}, x->next->data=1, x->next->data != 0 && x->data > x->next->data=1] [L1021] EXPR, FCALL x->next->data VAL [head={10:0}, malloc(sizeof(SLL))={10:0}, state=1, x={10:0}, x->data=1, x->next={10:0}, x->next={10:0}, x->next->data=1, x->next->data=1, x->next->data != 0 && x->data > x->next->data=1] [L1021] EXPR x->next->data != 0 && x->data > x->next->data VAL [head={10:0}, malloc(sizeof(SLL))={10:0}, state=1, x={10:0}, x->data=1, x->next={10:0}, x->next={10:0}, x->next->data=1, x->next->data=1, x->next->data != 0 && x->data > x->next->data=0] [L1021] COND TRUE !(x->next->data != 0 && x->data > x->next->data) [L1021] __VERIFIER_error() VAL [head={10:0}, malloc(sizeof(SLL))={10:0}, state=1, x={10:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 68 locations, 3 error locations. UNSAFE Result, 2.0s OverallTime, 7 OverallIterations, 2 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 353 SDtfs, 824 SDslu, 1383 SDs, 0 SdLazy, 697 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 108 GetRequests, 36 SyntacticMatches, 6 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=111occurred in iteration=6, 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, 6 MinimizatonAttempts, 167 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 216 NumberOfCodeBlocks, 216 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 176 ConstructedInterpolants, 11 QuantifiedInterpolants, 36937 SizeOfPredicates, 10 NumberOfNonLiveVariables, 102 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 0/6 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...