./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_89f026d9-7b63-4c75-a057-3f8a303a6d5b/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_89f026d9-7b63-4c75-a057-3f8a303a6d5b/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_89f026d9-7b63-4c75-a057-3f8a303a6d5b/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_89f026d9-7b63-4c75-a057-3f8a303a6d5b/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_89f026d9-7b63-4c75-a057-3f8a303a6d5b/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_89f026d9-7b63-4c75-a057-3f8a303a6d5b/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 [2018-11-10 05:48:42,031 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 05:48:42,033 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 05:48:42,042 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 05:48:42,042 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 05:48:42,043 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 05:48:42,044 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 05:48:42,046 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 05:48:42,047 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 05:48:42,048 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 05:48:42,048 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 05:48:42,049 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 05:48:42,049 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 05:48:42,050 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 05:48:42,051 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 05:48:42,052 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 05:48:42,053 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 05:48:42,054 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 05:48:42,056 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 05:48:42,057 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 05:48:42,058 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 05:48:42,059 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 05:48:42,061 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 05:48:42,061 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 05:48:42,061 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 05:48:42,062 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 05:48:42,063 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 05:48:42,063 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 05:48:42,064 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 05:48:42,065 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 05:48:42,065 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 05:48:42,066 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 05:48:42,066 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 05:48:42,066 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 05:48:42,067 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 05:48:42,067 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 05:48:42,068 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_89f026d9-7b63-4c75-a057-3f8a303a6d5b/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-10 05:48:42,080 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 05:48:42,080 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 05:48:42,081 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 05:48:42,081 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 05:48:42,082 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 05:48:42,082 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 05:48:42,082 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 05:48:42,082 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 05:48:42,082 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 05:48:42,083 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 05:48:42,083 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 05:48:42,083 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 05:48:42,083 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 05:48:42,083 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 05:48:42,084 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 05:48:42,084 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 05:48:42,084 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 05:48:42,084 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 05:48:42,084 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 05:48:42,085 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 05:48:42,085 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 05:48:42,085 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 05:48:42,085 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 05:48:42,085 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 05:48:42,085 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 05:48:42,086 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 05:48:42,086 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 05:48:42,086 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 05:48:42,086 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 05:48:42,086 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_89f026d9-7b63-4c75-a057-3f8a303a6d5b/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 [2018-11-10 05:48:42,115 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 05:48:42,124 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 05:48:42,126 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 05:48:42,127 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 05:48:42,127 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 05:48:42,128 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_89f026d9-7b63-4c75-a057-3f8a303a6d5b/bin-2019/uautomizer/../../sv-benchmarks/c/list-properties/simple_false-unreach-call_false-valid-memcleanup.i [2018-11-10 05:48:42,173 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_89f026d9-7b63-4c75-a057-3f8a303a6d5b/bin-2019/uautomizer/data/b08fa9511/a5bb21bdc74e43b7a7d8711b5303ac3d/FLAG2a70a5e8c [2018-11-10 05:48:42,603 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 05:48:42,604 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_89f026d9-7b63-4c75-a057-3f8a303a6d5b/sv-benchmarks/c/list-properties/simple_false-unreach-call_false-valid-memcleanup.i [2018-11-10 05:48:42,610 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_89f026d9-7b63-4c75-a057-3f8a303a6d5b/bin-2019/uautomizer/data/b08fa9511/a5bb21bdc74e43b7a7d8711b5303ac3d/FLAG2a70a5e8c [2018-11-10 05:48:42,620 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_89f026d9-7b63-4c75-a057-3f8a303a6d5b/bin-2019/uautomizer/data/b08fa9511/a5bb21bdc74e43b7a7d8711b5303ac3d [2018-11-10 05:48:42,622 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 05:48:42,623 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 05:48:42,623 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 05:48:42,623 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 05:48:42,626 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 05:48:42,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:48:42" (1/1) ... [2018-11-10 05:48:42,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e2e6dd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:42, skipping insertion in model container [2018-11-10 05:48:42,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:48:42" (1/1) ... [2018-11-10 05:48:42,633 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 05:48:42,659 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 05:48:42,830 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 05:48:42,838 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 05:48:42,865 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 05:48:42,887 INFO L193 MainTranslator]: Completed translation [2018-11-10 05:48:42,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:42 WrapperNode [2018-11-10 05:48:42,888 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 05:48:42,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 05:48:42,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 05:48:42,888 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 05:48:42,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:42" (1/1) ... [2018-11-10 05:48:42,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:42" (1/1) ... [2018-11-10 05:48:42,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:42" (1/1) ... [2018-11-10 05:48:42,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:42" (1/1) ... [2018-11-10 05:48:42,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:42" (1/1) ... [2018-11-10 05:48:42,960 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:42" (1/1) ... [2018-11-10 05:48:42,962 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:42" (1/1) ... [2018-11-10 05:48:42,965 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 05:48:42,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 05:48:42,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 05:48:42,966 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 05:48:42,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_89f026d9-7b63-4c75-a057-3f8a303a6d5b/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 05:48:42,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 05:48:42,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 05:48:42,999 INFO L138 BoogieDeclarations]: Found implementation of procedure exit [2018-11-10 05:48:43,000 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 05:48:43,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 05:48:43,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-10 05:48:43,000 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-10 05:48:43,000 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-10 05:48:43,000 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-10 05:48:43,000 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-10 05:48:43,000 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-10 05:48:43,001 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-10 05:48:43,001 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-10 05:48:43,001 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-10 05:48:43,001 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-10 05:48:43,001 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-10 05:48:43,001 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-10 05:48:43,001 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-10 05:48:43,001 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-10 05:48:43,001 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-10 05:48:43,001 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-10 05:48:43,002 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-10 05:48:43,002 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-10 05:48:43,002 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-10 05:48:43,002 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-10 05:48:43,002 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-10 05:48:43,002 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-10 05:48:43,002 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-10 05:48:43,002 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-10 05:48:43,002 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-10 05:48:43,002 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-10 05:48:43,002 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-10 05:48:43,002 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-10 05:48:43,002 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-10 05:48:43,002 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-10 05:48:43,002 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-10 05:48:43,003 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-10 05:48:43,003 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-10 05:48:43,003 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-10 05:48:43,003 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-10 05:48:43,003 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-10 05:48:43,003 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-10 05:48:43,003 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-10 05:48:43,003 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-10 05:48:43,003 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-10 05:48:43,004 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-10 05:48:43,004 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-10 05:48:43,004 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-10 05:48:43,004 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-10 05:48:43,004 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-10 05:48:43,004 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-10 05:48:43,004 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-10 05:48:43,004 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-10 05:48:43,008 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-10 05:48:43,008 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-10 05:48:43,008 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-10 05:48:43,008 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-10 05:48:43,008 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-10 05:48:43,009 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-10 05:48:43,009 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-10 05:48:43,009 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-10 05:48:43,009 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-10 05:48:43,009 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-10 05:48:43,009 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-10 05:48:43,009 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-10 05:48:43,009 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-10 05:48:43,009 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-10 05:48:43,010 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-10 05:48:43,010 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-10 05:48:43,010 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-10 05:48:43,010 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2018-11-10 05:48:43,010 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-10 05:48:43,010 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-10 05:48:43,010 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-10 05:48:43,010 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-10 05:48:43,010 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-10 05:48:43,011 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-10 05:48:43,011 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-10 05:48:43,011 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-10 05:48:43,011 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-10 05:48:43,011 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-10 05:48:43,011 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-10 05:48:43,011 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-10 05:48:43,011 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-10 05:48:43,011 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-10 05:48:43,012 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-10 05:48:43,012 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-10 05:48:43,012 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-10 05:48:43,012 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-10 05:48:43,012 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-10 05:48:43,012 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-10 05:48:43,012 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-10 05:48:43,012 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-10 05:48:43,012 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-10 05:48:43,013 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-10 05:48:43,013 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-10 05:48:43,013 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-10 05:48:43,013 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-10 05:48:43,013 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-10 05:48:43,013 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-10 05:48:43,013 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-10 05:48:43,013 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-10 05:48:43,013 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-10 05:48:43,013 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-10 05:48:43,014 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-10 05:48:43,014 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-10 05:48:43,014 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-10 05:48:43,014 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 05:48:43,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-10 05:48:43,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-10 05:48:43,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-10 05:48:43,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-10 05:48:43,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-10 05:48:43,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 05:48:43,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 05:48:43,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-10 05:48:43,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-10 05:48:43,278 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 05:48:43,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:48:43 BoogieIcfgContainer [2018-11-10 05:48:43,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 05:48:43,279 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 05:48:43,279 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 05:48:43,282 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 05:48:43,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 05:48:42" (1/3) ... [2018-11-10 05:48:43,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44270577 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:48:43, skipping insertion in model container [2018-11-10 05:48:43,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:48:42" (2/3) ... [2018-11-10 05:48:43,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44270577 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:48:43, skipping insertion in model container [2018-11-10 05:48:43,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:48:43" (3/3) ... [2018-11-10 05:48:43,285 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_false-unreach-call_false-valid-memcleanup.i [2018-11-10 05:48:43,293 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 05:48:43,299 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 05:48:43,312 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 05:48:43,337 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 05:48:43,338 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 05:48:43,338 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 05:48:43,338 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 05:48:43,338 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 05:48:43,339 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 05:48:43,339 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 05:48:43,339 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 05:48:43,339 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 05:48:43,355 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-11-10 05:48:43,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-10 05:48:43,360 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:48:43,361 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 05:48:43,363 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:48:43,368 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:48:43,368 INFO L82 PathProgramCache]: Analyzing trace with hash 25898167, now seen corresponding path program 1 times [2018-11-10 05:48:43,370 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:48:43,370 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:48:43,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:48:43,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:48:43,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:48:43,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:48:43,494 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 05:48:43,496 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 05:48:43,496 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 05:48:43,500 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 05:48:43,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 05:48:43,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 05:48:43,517 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2018-11-10 05:48:43,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:48:43,537 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2018-11-10 05:48:43,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 05:48:43,538 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-11-10 05:48:43,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:48:43,547 INFO L225 Difference]: With dead ends: 56 [2018-11-10 05:48:43,547 INFO L226 Difference]: Without dead ends: 31 [2018-11-10 05:48:43,550 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 05:48:43,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-10 05:48:43,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-11-10 05:48:43,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-10 05:48:43,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-11-10 05:48:43,578 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 19 [2018-11-10 05:48:43,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:48:43,579 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2018-11-10 05:48:43,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 05:48:43,579 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2018-11-10 05:48:43,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-10 05:48:43,580 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:48:43,580 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 05:48:43,580 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:48:43,580 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:48:43,580 INFO L82 PathProgramCache]: Analyzing trace with hash -2106810332, now seen corresponding path program 1 times [2018-11-10 05:48:43,580 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:48:43,581 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:48:43,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:48:43,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:48:43,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:48:43,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:48:43,674 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 05:48:43,674 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 05:48:43,674 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-10 05:48:43,676 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-10 05:48:43,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-10 05:48:43,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-10 05:48:43,676 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 6 states. [2018-11-10 05:48:43,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:48:43,855 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2018-11-10 05:48:43,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-10 05:48:43,856 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2018-11-10 05:48:43,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:48:43,857 INFO L225 Difference]: With dead ends: 68 [2018-11-10 05:48:43,857 INFO L226 Difference]: Without dead ends: 66 [2018-11-10 05:48:43,858 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-10 05:48:43,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-11-10 05:48:43,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 41. [2018-11-10 05:48:43,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-10 05:48:43,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2018-11-10 05:48:43,864 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 21 [2018-11-10 05:48:43,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:48:43,864 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2018-11-10 05:48:43,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-10 05:48:43,864 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2018-11-10 05:48:43,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-10 05:48:43,864 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:48:43,864 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] [2018-11-10 05:48:43,865 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:48:43,865 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:48:43,865 INFO L82 PathProgramCache]: Analyzing trace with hash -576818827, now seen corresponding path program 1 times [2018-11-10 05:48:43,865 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:48:43,865 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:48:43,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:48:43,866 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:48:43,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:48:43,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:48:44,004 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:48:44,004 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 05:48:44,004 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_89f026d9-7b63-4c75-a057-3f8a303a6d5b/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 05:48:44,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:48:44,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 05:48:44,042 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 05:48:44,094 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 [2018-11-10 05:48:44,097 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 [2018-11-10 05:48:44,098 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 05:48:44,105 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 05:48:44,119 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 [2018-11-10 05:48:44,120 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 [2018-11-10 05:48:44,120 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-10 05:48:44,122 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 05:48:44,130 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 05:48:44,130 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:26, output treesize:18 [2018-11-10 05:48:44,154 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 [2018-11-10 05:48:44,157 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 [2018-11-10 05:48:44,157 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 05:48:44,169 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 05:48:44,189 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 [2018-11-10 05:48:44,191 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 [2018-11-10 05:48:44,191 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-10 05:48:44,192 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 05:48:44,195 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 05:48:44,195 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2018-11-10 05:48:44,220 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 05:48:44,237 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 05:48:44,237 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-11-10 05:48:44,237 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-10 05:48:44,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-10 05:48:44,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-11-10 05:48:44,238 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 9 states. [2018-11-10 05:48:44,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 05:48:44,396 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2018-11-10 05:48:44,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 05:48:44,397 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2018-11-10 05:48:44,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 05:48:44,397 INFO L225 Difference]: With dead ends: 68 [2018-11-10 05:48:44,398 INFO L226 Difference]: Without dead ends: 49 [2018-11-10 05:48:44,398 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 7 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2018-11-10 05:48:44,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-11-10 05:48:44,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 34. [2018-11-10 05:48:44,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-10 05:48:44,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2018-11-10 05:48:44,402 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 27 [2018-11-10 05:48:44,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 05:48:44,403 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2018-11-10 05:48:44,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-10 05:48:44,403 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2018-11-10 05:48:44,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-10 05:48:44,403 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 05:48:44,404 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] [2018-11-10 05:48:44,404 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 05:48:44,404 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 05:48:44,404 INFO L82 PathProgramCache]: Analyzing trace with hash -753370019, now seen corresponding path program 1 times [2018-11-10 05:48:44,404 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 05:48:44,404 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 05:48:44,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:48:44,405 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 05:48:44,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 05:48:44,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:48:44,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 05:48:44,446 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 05:48:44,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 05:48:44 BoogieIcfgContainer [2018-11-10 05:48:44,467 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 05:48:44,467 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 05:48:44,467 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 05:48:44,468 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 05:48:44,468 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 05:48:43" (3/4) ... [2018-11-10 05:48:44,469 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-10 05:48:44,500 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_89f026d9-7b63-4c75-a057-3f8a303a6d5b/bin-2019/uautomizer/witness.graphml [2018-11-10 05:48:44,500 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 05:48:44,500 INFO L168 Benchmark]: Toolchain (without parser) took 1877.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 957.6 MB in the beginning and 970.8 MB in the end (delta: -13.1 MB). Peak memory consumption was 132.1 MB. Max. memory is 11.5 GB. [2018-11-10 05:48:44,501 INFO L168 Benchmark]: CDTParser took 0.11 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 05:48:44,502 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.69 ms. Allocated memory is still 1.0 GB. Free memory was 957.6 MB in the beginning and 933.3 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. [2018-11-10 05:48:44,502 INFO L168 Benchmark]: Boogie Preprocessor took 76.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 933.3 MB in the beginning and 1.1 GB in the end (delta: -208.8 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. [2018-11-10 05:48:44,502 INFO L168 Benchmark]: RCFGBuilder took 313.42 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: 43.9 MB). Peak memory consumption was 43.9 MB. Max. memory is 11.5 GB. [2018-11-10 05:48:44,503 INFO L168 Benchmark]: TraceAbstraction took 1187.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 973.4 MB in the end (delta: 124.7 MB). Peak memory consumption was 124.7 MB. Max. memory is 11.5 GB. [2018-11-10 05:48:44,503 INFO L168 Benchmark]: Witness Printer took 32.58 ms. Allocated memory is still 1.2 GB. Free memory was 973.4 MB in the beginning and 970.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 05:48:44,505 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 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 264.69 ms. Allocated memory is still 1.0 GB. Free memory was 957.6 MB in the beginning and 933.3 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 76.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 933.3 MB in the beginning and 1.1 GB in the end (delta: -208.8 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 313.42 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: 43.9 MB). Peak memory consumption was 43.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1187.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 973.4 MB in the end (delta: 124.7 MB). Peak memory consumption was 124.7 MB. Max. memory is 11.5 GB. * Witness Printer took 32.58 ms. Allocated memory is still 1.2 GB. Free memory was 973.4 MB in the beginning and 970.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 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))={10:0}, malloc(sizeof(struct node))={11:0}, 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))={10:0}, malloc(sizeof(struct node))={11:0}, 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))={10:0}, malloc(sizeof(struct node))={11:0}, p={10:0}, t={10:0}] [L640] FCALL p->n = 0 VAL [a={11:0}, malloc(sizeof(struct node))={10:0}, malloc(sizeof(struct node))={11:0}, p={10:0}, t={10:0}] [L641] p = a VAL [a={11:0}, malloc(sizeof(struct node))={10:0}, malloc(sizeof(struct node))={11:0}, 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, 1.1s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 84 SDtfs, 174 SDslu, 169 SDs, 0 SdLazy, 145 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 26 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s 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, 0.0s SatisfiabilityAnalysisTime, 0.4s 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...