./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/list-properties/simple_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_20aeaa9b-00b4-41c6-96eb-0935344c73d2/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_20aeaa9b-00b4-41c6-96eb-0935344c73d2/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_20aeaa9b-00b4-41c6-96eb-0935344c73d2/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_20aeaa9b-00b4-41c6-96eb-0935344c73d2/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-properties/simple_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_20aeaa9b-00b4-41c6-96eb-0935344c73d2/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_20aeaa9b-00b4-41c6-96eb-0935344c73d2/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 dfa29c268b4cea6214da8605085222e43705cbc6 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-26 21:05:17,839 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 21:05:17,840 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 21:05:17,849 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 21:05:17,849 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 21:05:17,850 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 21:05:17,855 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 21:05:17,857 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 21:05:17,859 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 21:05:17,862 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 21:05:17,864 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 21:05:17,864 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 21:05:17,865 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 21:05:17,867 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 21:05:17,873 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 21:05:17,874 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 21:05:17,875 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 21:05:17,876 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 21:05:17,877 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 21:05:17,880 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 21:05:17,881 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 21:05:17,882 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 21:05:17,885 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 21:05:17,887 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 21:05:17,887 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 21:05:17,888 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 21:05:17,888 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 21:05:17,889 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 21:05:17,889 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 21:05:17,890 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 21:05:17,890 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 21:05:17,891 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 21:05:17,891 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 21:05:17,891 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 21:05:17,892 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 21:05:17,892 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 21:05:17,892 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_20aeaa9b-00b4-41c6-96eb-0935344c73d2/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-10-26 21:05:17,908 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 21:05:17,911 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 21:05:17,912 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 21:05:17,913 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 21:05:17,913 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 21:05:17,915 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 21:05:17,915 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 21:05:17,915 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 21:05:17,915 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 21:05:17,915 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 21:05:17,915 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 21:05:17,915 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 21:05:17,916 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 21:05:17,916 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 21:05:17,916 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 21:05:17,916 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 21:05:17,916 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 21:05:17,916 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 21:05:17,916 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 21:05:17,916 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 21:05:17,917 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 21:05:17,917 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 21:05:17,917 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:05:17,917 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 21:05:17,917 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 21:05:17,917 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 21:05:17,917 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 21:05:17,918 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 21:05:17,918 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 21:05:17,918 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_20aeaa9b-00b4-41c6-96eb-0935344c73d2/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 -> dfa29c268b4cea6214da8605085222e43705cbc6 [2018-10-26 21:05:17,954 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 21:05:17,970 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 21:05:17,976 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 21:05:17,977 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 21:05:17,977 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 21:05:17,979 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_20aeaa9b-00b4-41c6-96eb-0935344c73d2/bin-2019/uautomizer/../../sv-benchmarks/c/list-properties/simple_false-unreach-call_false-valid-memcleanup.i [2018-10-26 21:05:18,018 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_20aeaa9b-00b4-41c6-96eb-0935344c73d2/bin-2019/uautomizer/data/89cf0f0fc/0737643965444b0795645f0e4b250c96/FLAGc5f7c2174 [2018-10-26 21:05:18,441 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 21:05:18,442 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_20aeaa9b-00b4-41c6-96eb-0935344c73d2/sv-benchmarks/c/list-properties/simple_false-unreach-call_false-valid-memcleanup.i [2018-10-26 21:05:18,453 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_20aeaa9b-00b4-41c6-96eb-0935344c73d2/bin-2019/uautomizer/data/89cf0f0fc/0737643965444b0795645f0e4b250c96/FLAGc5f7c2174 [2018-10-26 21:05:18,466 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_20aeaa9b-00b4-41c6-96eb-0935344c73d2/bin-2019/uautomizer/data/89cf0f0fc/0737643965444b0795645f0e4b250c96 [2018-10-26 21:05:18,469 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 21:05:18,470 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 21:05:18,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 21:05:18,471 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 21:05:18,473 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 21:05:18,474 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:05:18" (1/1) ... [2018-10-26 21:05:18,476 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5db5b40a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:05:18, skipping insertion in model container [2018-10-26 21:05:18,477 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:05:18" (1/1) ... [2018-10-26 21:05:18,487 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 21:05:18,521 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 21:05:18,745 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:05:18,753 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 21:05:18,786 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:05:18,835 INFO L193 MainTranslator]: Completed translation [2018-10-26 21:05:18,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:05:18 WrapperNode [2018-10-26 21:05:18,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 21:05:18,836 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 21:05:18,836 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 21:05:18,836 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 21:05:18,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:05:18" (1/1) ... [2018-10-26 21:05:18,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:05:18" (1/1) ... [2018-10-26 21:05:18,859 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:05:18" (1/1) ... [2018-10-26 21:05:18,860 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:05:18" (1/1) ... [2018-10-26 21:05:18,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:05:18" (1/1) ... [2018-10-26 21:05:18,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:05:18" (1/1) ... [2018-10-26 21:05:18,876 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:05:18" (1/1) ... [2018-10-26 21:05:18,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 21:05:18,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 21:05:18,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 21:05:18,946 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 21:05:18,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:05:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_20aeaa9b-00b4-41c6-96eb-0935344c73d2/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:05:19,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 21:05:19,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 21:05:19,005 INFO L138 BoogieDeclarations]: Found implementation of procedure exit [2018-10-26 21:05:19,005 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 21:05:19,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-10-26 21:05:19,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-10-26 21:05:19,006 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-10-26 21:05:19,006 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-10-26 21:05:19,006 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-10-26 21:05:19,006 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-10-26 21:05:19,006 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-10-26 21:05:19,006 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-10-26 21:05:19,007 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-10-26 21:05:19,007 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-10-26 21:05:19,007 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-10-26 21:05:19,007 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-10-26 21:05:19,007 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-10-26 21:05:19,007 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-10-26 21:05:19,007 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-10-26 21:05:19,007 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-10-26 21:05:19,008 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-10-26 21:05:19,008 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-10-26 21:05:19,008 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-10-26 21:05:19,008 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-10-26 21:05:19,008 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-10-26 21:05:19,008 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-10-26 21:05:19,008 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-10-26 21:05:19,008 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-10-26 21:05:19,009 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-10-26 21:05:19,009 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-10-26 21:05:19,009 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-10-26 21:05:19,009 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-10-26 21:05:19,009 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-10-26 21:05:19,009 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-10-26 21:05:19,009 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-10-26 21:05:19,009 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-10-26 21:05:19,010 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-10-26 21:05:19,010 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-10-26 21:05:19,010 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-10-26 21:05:19,010 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-10-26 21:05:19,010 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-10-26 21:05:19,010 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-10-26 21:05:19,010 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-10-26 21:05:19,010 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-10-26 21:05:19,010 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-10-26 21:05:19,011 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-10-26 21:05:19,011 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-10-26 21:05:19,011 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-10-26 21:05:19,011 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-10-26 21:05:19,011 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-10-26 21:05:19,011 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-10-26 21:05:19,011 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-10-26 21:05:19,011 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-10-26 21:05:19,011 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-10-26 21:05:19,012 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-10-26 21:05:19,012 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-10-26 21:05:19,012 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-10-26 21:05:19,012 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-10-26 21:05:19,012 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-10-26 21:05:19,012 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-10-26 21:05:19,012 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-10-26 21:05:19,012 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-10-26 21:05:19,012 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-10-26 21:05:19,013 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-10-26 21:05:19,013 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-10-26 21:05:19,013 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-10-26 21:05:19,013 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-10-26 21:05:19,013 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 21:05:19,013 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-10-26 21:05:19,013 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-10-26 21:05:19,013 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2018-10-26 21:05:19,013 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-10-26 21:05:19,014 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-10-26 21:05:19,014 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-10-26 21:05:19,014 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-10-26 21:05:19,014 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-10-26 21:05:19,014 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-10-26 21:05:19,014 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-10-26 21:05:19,014 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-10-26 21:05:19,014 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-10-26 21:05:19,014 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-10-26 21:05:19,015 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-10-26 21:05:19,015 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-10-26 21:05:19,015 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-10-26 21:05:19,015 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-10-26 21:05:19,015 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-10-26 21:05:19,015 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-10-26 21:05:19,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-10-26 21:05:19,015 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-10-26 21:05:19,015 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-10-26 21:05:19,016 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-10-26 21:05:19,016 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-10-26 21:05:19,016 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-10-26 21:05:19,016 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-10-26 21:05:19,016 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-10-26 21:05:19,016 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-10-26 21:05:19,016 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-10-26 21:05:19,016 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-10-26 21:05:19,016 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-10-26 21:05:19,017 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-10-26 21:05:19,017 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-10-26 21:05:19,017 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-10-26 21:05:19,017 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-10-26 21:05:19,017 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-10-26 21:05:19,017 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-10-26 21:05:19,017 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-10-26 21:05:19,017 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-10-26 21:05:19,017 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 21:05:19,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-10-26 21:05:19,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-10-26 21:05:19,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-10-26 21:05:19,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-10-26 21:05:19,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-10-26 21:05:19,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 21:05:19,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 21:05:19,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-10-26 21:05:19,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-10-26 21:05:19,568 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 21:05:19,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:05:19 BoogieIcfgContainer [2018-10-26 21:05:19,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 21:05:19,570 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 21:05:19,570 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 21:05:19,574 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 21:05:19,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:05:18" (1/3) ... [2018-10-26 21:05:19,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c79561e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:05:19, skipping insertion in model container [2018-10-26 21:05:19,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:05:18" (2/3) ... [2018-10-26 21:05:19,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c79561e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:05:19, skipping insertion in model container [2018-10-26 21:05:19,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:05:19" (3/3) ... [2018-10-26 21:05:19,577 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_false-unreach-call_false-valid-memcleanup.i [2018-10-26 21:05:19,585 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 21:05:19,593 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 21:05:19,608 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 21:05:19,637 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 21:05:19,638 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 21:05:19,638 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 21:05:19,638 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 21:05:19,638 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 21:05:19,639 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 21:05:19,639 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 21:05:19,639 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 21:05:19,639 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 21:05:19,655 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-10-26 21:05:19,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-26 21:05:19,661 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:05:19,662 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:05:19,664 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:05:19,669 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:05:19,669 INFO L82 PathProgramCache]: Analyzing trace with hash 25898167, now seen corresponding path program 1 times [2018-10-26 21:05:19,671 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:05:19,672 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:05:19,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:05:19,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:05:19,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:05:19,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:05:19,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:05:19,798 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:05:19,799 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 21:05:19,802 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 21:05:19,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 21:05:19,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 21:05:19,817 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2018-10-26 21:05:19,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:05:19,838 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2018-10-26 21:05:19,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 21:05:19,839 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-10-26 21:05:19,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:05:19,847 INFO L225 Difference]: With dead ends: 56 [2018-10-26 21:05:19,847 INFO L226 Difference]: Without dead ends: 31 [2018-10-26 21:05:19,850 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 21:05:19,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-10-26 21:05:19,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-10-26 21:05:19,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-26 21:05:19,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-10-26 21:05:19,885 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 19 [2018-10-26 21:05:19,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:05:19,885 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2018-10-26 21:05:19,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 21:05:19,886 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2018-10-26 21:05:19,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-26 21:05:19,886 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:05:19,886 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] [2018-10-26 21:05:19,887 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:05:19,887 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:05:19,887 INFO L82 PathProgramCache]: Analyzing trace with hash -2106810332, now seen corresponding path program 1 times [2018-10-26 21:05:19,887 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:05:19,887 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:05:19,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:05:19,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:05:19,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:05:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:05:20,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:05:20,078 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:05:20,078 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 21:05:20,081 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 21:05:20,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 21:05:20,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-10-26 21:05:20,082 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 6 states. [2018-10-26 21:05:20,344 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2018-10-26 21:05:20,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:05:20,500 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2018-10-26 21:05:20,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 21:05:20,501 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2018-10-26 21:05:20,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:05:20,502 INFO L225 Difference]: With dead ends: 68 [2018-10-26 21:05:20,502 INFO L226 Difference]: Without dead ends: 66 [2018-10-26 21:05:20,503 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-26 21:05:20,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-10-26 21:05:20,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 41. [2018-10-26 21:05:20,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-26 21:05:20,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2018-10-26 21:05:20,510 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 21 [2018-10-26 21:05:20,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:05:20,511 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2018-10-26 21:05:20,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 21:05:20,511 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2018-10-26 21:05:20,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-26 21:05:20,511 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:05:20,511 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:05:20,512 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:05:20,512 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:05:20,512 INFO L82 PathProgramCache]: Analyzing trace with hash -576818827, now seen corresponding path program 1 times [2018-10-26 21:05:20,512 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:05:20,512 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:05:20,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:05:20,513 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:05:20,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:05:20,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:05:20,950 WARN L179 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 16 [2018-10-26 21:05:21,031 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:05:21,031 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:05:21,032 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_20aeaa9b-00b4-41c6-96eb-0935344c73d2/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 [2018-10-26 21:05:21,047 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:05:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:05:21,085 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:05:21,153 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 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 [2018-10-26 21:05:21,166 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 8 treesize of output 7 [2018-10-26 21:05:21,166 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:05:21,171 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:05:21,194 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 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 [2018-10-26 21:05:21,196 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 8 treesize of output 7 [2018-10-26 21:05:21,197 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 21:05:21,201 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:05:21,211 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:05:21,211 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:26, output treesize:18 [2018-10-26 21:05:21,266 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-10-26 21:05:21,278 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 11 treesize of output 3 [2018-10-26 21:05:21,279 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 21:05:21,281 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:05:21,288 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-10-26 21:05:21,290 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 11 treesize of output 3 [2018-10-26 21:05:21,291 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-10-26 21:05:21,292 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:05:21,295 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 21:05:21,296 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2018-10-26 21:05:21,327 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:05:21,356 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 21:05:21,356 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-10-26 21:05:21,356 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-26 21:05:21,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-26 21:05:21,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-10-26 21:05:21,357 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 9 states. [2018-10-26 21:05:21,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:05:21,774 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2018-10-26 21:05:21,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 21:05:21,775 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2018-10-26 21:05:21,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:05:21,776 INFO L225 Difference]: With dead ends: 68 [2018-10-26 21:05:21,776 INFO L226 Difference]: Without dead ends: 49 [2018-10-26 21:05:21,777 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 7 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2018-10-26 21:05:21,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-10-26 21:05:21,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 34. [2018-10-26 21:05:21,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-26 21:05:21,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2018-10-26 21:05:21,783 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 27 [2018-10-26 21:05:21,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:05:21,784 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2018-10-26 21:05:21,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-26 21:05:21,784 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2018-10-26 21:05:21,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-26 21:05:21,785 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:05:21,785 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] [2018-10-26 21:05:21,785 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:05:21,786 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:05:21,786 INFO L82 PathProgramCache]: Analyzing trace with hash -753370019, now seen corresponding path program 1 times [2018-10-26 21:05:21,786 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:05:21,786 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:05:21,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:05:21,787 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:05:21,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:05:21,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 21:05:21,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 21:05:21,842 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-26 21:05:21,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 09:05:21 BoogieIcfgContainer [2018-10-26 21:05:21,875 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 21:05:21,876 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 21:05:21,876 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 21:05:21,876 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 21:05:21,876 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:05:19" (3/4) ... [2018-10-26 21:05:21,880 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-10-26 21:05:21,935 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_20aeaa9b-00b4-41c6-96eb-0935344c73d2/bin-2019/uautomizer/witness.graphml [2018-10-26 21:05:21,935 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 21:05:21,936 INFO L168 Benchmark]: Toolchain (without parser) took 3466.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 951.8 MB in the beginning and 982.6 MB in the end (delta: -30.8 MB). Peak memory consumption was 130.1 MB. Max. memory is 11.5 GB. [2018-10-26 21:05:21,937 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 979.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 21:05:21,938 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.32 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 930.1 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 11.5 GB. [2018-10-26 21:05:21,938 INFO L168 Benchmark]: Boogie Preprocessor took 109.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 930.1 MB in the beginning and 1.2 GB in the end (delta: -234.5 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2018-10-26 21:05:21,939 INFO L168 Benchmark]: RCFGBuilder took 623.45 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: 51.6 MB). Peak memory consumption was 51.6 MB. Max. memory is 11.5 GB. [2018-10-26 21:05:21,939 INFO L168 Benchmark]: TraceAbstraction took 2305.19 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 985.8 MB in the end (delta: 127.1 MB). Peak memory consumption was 127.1 MB. Max. memory is 11.5 GB. [2018-10-26 21:05:21,940 INFO L168 Benchmark]: Witness Printer took 59.99 ms. Allocated memory is still 1.2 GB. Free memory was 985.8 MB in the beginning and 982.6 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-10-26 21:05:21,945 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 979.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 365.32 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 930.1 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 109.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 930.1 MB in the beginning and 1.2 GB in the end (delta: -234.5 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 623.45 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: 51.6 MB). Peak memory consumption was 51.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2305.19 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 985.8 MB in the end (delta: 127.1 MB). Peak memory consumption was 127.1 MB. Max. memory is 11.5 GB. * Witness Printer took 59.99 ms. Allocated memory is still 1.2 GB. Free memory was 985.8 MB in the beginning and 982.6 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 644]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L627] EXPR, FCALL malloc(sizeof(struct node)) VAL [malloc(sizeof(struct node))={11:0}] [L627] List a = (List) malloc(sizeof(struct node)); VAL [a={11:0}, malloc(sizeof(struct node))={11:0}] [L628] COND FALSE !(a == 0) VAL [a={11:0}, malloc(sizeof(struct node))={11:0}] [L629] List t; [L630] List p = a; VAL [a={11:0}, malloc(sizeof(struct node))={11:0}, p={11:0}] [L631] FCALL a->h = 2 VAL [a={11:0}, malloc(sizeof(struct node))={11:0}, p={11:0}] [L632] COND TRUE __VERIFIER_nondet_int() [L633] FCALL p->h = 1 VAL [a={11:0}, malloc(sizeof(struct node))={11:0}, p={11:0}] [L634] EXPR, FCALL malloc(sizeof(struct node)) VAL [a={11:0}, malloc(sizeof(struct node))={11:0}, malloc(sizeof(struct node))={10:0}, p={11:0}] [L634] t = (List) malloc(sizeof(struct node)) VAL [a={11:0}, malloc(sizeof(struct node))={10:0}, malloc(sizeof(struct node))={11:0}, p={11:0}, t={10:0}] [L635] COND FALSE !(t == 0) VAL [a={11:0}, malloc(sizeof(struct node))={10:0}, malloc(sizeof(struct node))={11:0}, p={11:0}, t={10:0}] [L636] FCALL p->n = t VAL [a={11:0}, malloc(sizeof(struct node))={11:0}, malloc(sizeof(struct node))={10:0}, p={11:0}, t={10:0}] [L637] EXPR, FCALL p->n VAL [a={11:0}, malloc(sizeof(struct node))={10:0}, malloc(sizeof(struct node))={11:0}, p={11:0}, p->n={10:0}, t={10:0}] [L637] p = p->n [L632] COND FALSE !(__VERIFIER_nondet_int()) [L639] FCALL p->h = 2 VAL [a={11:0}, malloc(sizeof(struct node))={11:0}, malloc(sizeof(struct node))={10:0}, p={10:0}, t={10:0}] [L640] FCALL p->n = 0 VAL [a={11:0}, malloc(sizeof(struct node))={11:0}, malloc(sizeof(struct node))={10:0}, p={10:0}, t={10:0}] [L641] p = a VAL [a={11:0}, malloc(sizeof(struct node))={11:0}, malloc(sizeof(struct node))={10:0}, p={11:0}, t={10:0}] [L642] COND TRUE p!=0 VAL [a={11:0}, malloc(sizeof(struct node))={10:0}, malloc(sizeof(struct node))={11:0}, p={11:0}, t={10:0}] [L643] EXPR, FCALL p->h VAL [a={11:0}, malloc(sizeof(struct node))={10:0}, malloc(sizeof(struct node))={11:0}, p={11:0}, p->h=1, t={10:0}] [L643] COND TRUE p->h != 2 [L644] __VERIFIER_error() VAL [a={11:0}, malloc(sizeof(struct node))={10:0}, malloc(sizeof(struct node))={11:0}, p={11:0}, t={10:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 42 locations, 1 error locations. UNSAFE Result, 2.2s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 84 SDtfs, 174 SDslu, 169 SDs, 0 SdLazy, 145 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 26 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=2, 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, 40 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 13924 SizeOfPredicates, 11 NumberOfNonLiveVariables, 80 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 4/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...