./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/list-properties/splice_false-unreach-call_false-valid-memcleanup.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_937bb381-ee6a-4fb5-9f20-5ce7f762df05/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_937bb381-ee6a-4fb5-9f20-5ce7f762df05/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_937bb381-ee6a-4fb5-9f20-5ce7f762df05/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_937bb381-ee6a-4fb5-9f20-5ce7f762df05/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-properties/splice_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_937bb381-ee6a-4fb5-9f20-5ce7f762df05/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_937bb381-ee6a-4fb5-9f20-5ce7f762df05/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 cbb2592ab69766c5d5aa80ea8eebc591334cc0be .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.23-5842f4b [2018-11-18 14:21:43,445 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 14:21:43,446 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 14:21:43,452 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 14:21:43,452 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 14:21:43,453 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 14:21:43,454 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 14:21:43,455 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 14:21:43,456 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 14:21:43,457 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 14:21:43,457 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 14:21:43,457 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 14:21:43,458 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 14:21:43,459 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 14:21:43,459 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 14:21:43,459 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 14:21:43,460 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 14:21:43,461 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 14:21:43,462 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 14:21:43,463 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 14:21:43,464 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 14:21:43,464 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 14:21:43,466 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 14:21:43,466 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 14:21:43,466 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 14:21:43,467 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 14:21:43,467 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 14:21:43,468 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 14:21:43,468 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 14:21:43,469 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 14:21:43,469 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 14:21:43,469 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 14:21:43,469 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 14:21:43,469 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 14:21:43,470 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 14:21:43,470 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 14:21:43,470 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_937bb381-ee6a-4fb5-9f20-5ce7f762df05/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf [2018-11-18 14:21:43,477 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 14:21:43,478 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 14:21:43,478 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 14:21:43,478 INFO L133 SettingsManager]: * Process only entry and re-entry procedures=false [2018-11-18 14:21:43,479 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 14:21:43,479 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 14:21:43,479 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 14:21:43,479 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 14:21:43,479 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 14:21:43,479 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 14:21:43,480 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 14:21:43,480 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 14:21:43,480 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 14:21:43,480 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 14:21:43,480 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 14:21:43,480 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 14:21:43,480 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 14:21:43,480 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 14:21:43,481 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 14:21:43,481 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 14:21:43,481 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 14:21:43,481 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 14:21:43,481 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 14:21:43,481 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 14:21:43,481 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 14:21:43,482 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 14:21:43,482 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 14:21:43,482 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 14:21:43,482 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 14:21:43,482 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 14:21:43,482 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_937bb381-ee6a-4fb5-9f20-5ce7f762df05/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 -> cbb2592ab69766c5d5aa80ea8eebc591334cc0be [2018-11-18 14:21:43,506 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 14:21:43,515 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 14:21:43,517 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 14:21:43,518 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 14:21:43,518 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 14:21:43,519 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_937bb381-ee6a-4fb5-9f20-5ce7f762df05/bin-2019/uautomizer/../../sv-benchmarks/c/list-properties/splice_false-unreach-call_false-valid-memcleanup.i [2018-11-18 14:21:43,560 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_937bb381-ee6a-4fb5-9f20-5ce7f762df05/bin-2019/uautomizer/data/1d9eea12b/407f8950f0b7461b9b73c78690a52235/FLAG8344fa6e3 [2018-11-18 14:21:43,901 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 14:21:43,902 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_937bb381-ee6a-4fb5-9f20-5ce7f762df05/sv-benchmarks/c/list-properties/splice_false-unreach-call_false-valid-memcleanup.i [2018-11-18 14:21:43,911 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_937bb381-ee6a-4fb5-9f20-5ce7f762df05/bin-2019/uautomizer/data/1d9eea12b/407f8950f0b7461b9b73c78690a52235/FLAG8344fa6e3 [2018-11-18 14:21:43,922 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_937bb381-ee6a-4fb5-9f20-5ce7f762df05/bin-2019/uautomizer/data/1d9eea12b/407f8950f0b7461b9b73c78690a52235 [2018-11-18 14:21:43,924 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 14:21:43,925 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 14:21:43,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 14:21:43,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 14:21:43,928 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 14:21:43,929 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:21:43" (1/1) ... [2018-11-18 14:21:43,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48090848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:21:43, skipping insertion in model container [2018-11-18 14:21:43,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:21:43" (1/1) ... [2018-11-18 14:21:43,937 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 14:21:43,965 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 14:21:44,162 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 14:21:44,169 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 14:21:44,200 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 14:21:44,284 INFO L195 MainTranslator]: Completed translation [2018-11-18 14:21:44,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:21:44 WrapperNode [2018-11-18 14:21:44,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 14:21:44,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 14:21:44,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 14:21:44,285 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 14:21:44,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:21:44" (1/1) ... [2018-11-18 14:21:44,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:21:44" (1/1) ... [2018-11-18 14:21:44,303 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:21:44" (1/1) ... [2018-11-18 14:21:44,303 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:21:44" (1/1) ... [2018-11-18 14:21:44,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:21:44" (1/1) ... [2018-11-18 14:21:44,317 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:21:44" (1/1) ... [2018-11-18 14:21:44,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:21:44" (1/1) ... [2018-11-18 14:21:44,321 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 14:21:44,322 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 14:21:44,322 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 14:21:44,322 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 14:21:44,323 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:21:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_937bb381-ee6a-4fb5-9f20-5ce7f762df05/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 [2018-11-18 14:21:44,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 14:21:44,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 14:21:44,363 INFO L138 BoogieDeclarations]: Found implementation of procedure exit [2018-11-18 14:21:44,363 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 14:21:44,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 14:21:44,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 14:21:44,363 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-18 14:21:44,363 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-18 14:21:44,363 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-18 14:21:44,363 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-18 14:21:44,363 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-18 14:21:44,363 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-18 14:21:44,364 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-18 14:21:44,364 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-18 14:21:44,364 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-18 14:21:44,364 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-18 14:21:44,364 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-18 14:21:44,364 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-18 14:21:44,364 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-18 14:21:44,364 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-18 14:21:44,365 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-18 14:21:44,365 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-18 14:21:44,365 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-18 14:21:44,365 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-18 14:21:44,365 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-18 14:21:44,365 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-18 14:21:44,365 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-18 14:21:44,365 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-18 14:21:44,365 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-18 14:21:44,366 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-18 14:21:44,366 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-18 14:21:44,366 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-18 14:21:44,366 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-18 14:21:44,366 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-18 14:21:44,366 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-18 14:21:44,366 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-18 14:21:44,366 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-18 14:21:44,366 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-18 14:21:44,367 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-18 14:21:44,367 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-18 14:21:44,367 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-18 14:21:44,367 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-18 14:21:44,367 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-18 14:21:44,367 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-18 14:21:44,367 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-18 14:21:44,367 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-18 14:21:44,367 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-18 14:21:44,368 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-18 14:21:44,368 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-18 14:21:44,368 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-18 14:21:44,368 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-18 14:21:44,368 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-18 14:21:44,368 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-18 14:21:44,368 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-18 14:21:44,368 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-18 14:21:44,368 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-18 14:21:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-18 14:21:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-18 14:21:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-18 14:21:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-18 14:21:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-18 14:21:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-18 14:21:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-18 14:21:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-18 14:21:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-18 14:21:44,370 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-18 14:21:44,370 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-18 14:21:44,370 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-18 14:21:44,370 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-18 14:21:44,370 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-18 14:21:44,370 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2018-11-18 14:21:44,370 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-18 14:21:44,370 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-18 14:21:44,370 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-18 14:21:44,371 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-18 14:21:44,371 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-18 14:21:44,371 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-18 14:21:44,371 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-18 14:21:44,371 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-18 14:21:44,371 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-18 14:21:44,371 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-18 14:21:44,371 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-18 14:21:44,371 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-18 14:21:44,372 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-18 14:21:44,372 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-18 14:21:44,372 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-18 14:21:44,372 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-18 14:21:44,372 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-18 14:21:44,372 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-18 14:21:44,372 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-18 14:21:44,372 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-18 14:21:44,372 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-18 14:21:44,373 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-18 14:21:44,373 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-18 14:21:44,373 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-18 14:21:44,373 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-18 14:21:44,373 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-18 14:21:44,373 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-18 14:21:44,373 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-18 14:21:44,373 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-18 14:21:44,373 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-18 14:21:44,373 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-18 14:21:44,374 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-18 14:21:44,374 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-18 14:21:44,374 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-18 14:21:44,374 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-18 14:21:44,374 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-18 14:21:44,374 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 14:21:44,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 14:21:44,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 14:21:44,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-18 14:21:44,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-18 14:21:44,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 14:21:44,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 14:21:44,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 14:21:44,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 14:21:44,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 14:21:44,633 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 14:21:44,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:21:44 BoogieIcfgContainer [2018-11-18 14:21:44,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 14:21:44,634 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 14:21:44,634 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 14:21:44,635 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 14:21:44,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:21:43" (1/3) ... [2018-11-18 14:21:44,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ebf1c2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:21:44, skipping insertion in model container [2018-11-18 14:21:44,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:21:44" (2/3) ... [2018-11-18 14:21:44,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ebf1c2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:21:44, skipping insertion in model container [2018-11-18 14:21:44,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:21:44" (3/3) ... [2018-11-18 14:21:44,638 INFO L112 eAbstractionObserver]: Analyzing ICFG splice_false-unreach-call_false-valid-memcleanup.i [2018-11-18 14:21:44,643 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 14:21:44,649 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 14:21:44,657 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 14:21:44,677 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 14:21:44,677 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 14:21:44,677 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 14:21:44,677 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 14:21:44,678 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 14:21:44,678 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 14:21:44,678 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 14:21:44,678 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 14:21:44,678 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 14:21:44,690 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-11-18 14:21:44,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-18 14:21:44,694 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:21:44,695 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:21:44,696 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:21:44,700 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:21:44,701 INFO L82 PathProgramCache]: Analyzing trace with hash 439708095, now seen corresponding path program 1 times [2018-11-18 14:21:44,702 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:21:44,702 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:21:44,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:21:44,731 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:21:44,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:21:44,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:21:44,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:21:44,784 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:21:44,784 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 14:21:44,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 14:21:44,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 14:21:44,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 14:21:44,797 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2018-11-18 14:21:44,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:21:44,811 INFO L93 Difference]: Finished difference Result 61 states and 83 transitions. [2018-11-18 14:21:44,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 14:21:44,812 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-11-18 14:21:44,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:21:44,819 INFO L225 Difference]: With dead ends: 61 [2018-11-18 14:21:44,819 INFO L226 Difference]: Without dead ends: 31 [2018-11-18 14:21:44,821 INFO L604 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 [2018-11-18 14:21:44,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-18 14:21:44,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-11-18 14:21:44,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-18 14:21:44,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2018-11-18 14:21:44,843 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 17 [2018-11-18 14:21:44,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:21:44,843 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2018-11-18 14:21:44,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 14:21:44,843 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2018-11-18 14:21:44,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 14:21:44,844 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:21:44,844 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] [2018-11-18 14:21:44,844 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:21:44,844 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:21:44,844 INFO L82 PathProgramCache]: Analyzing trace with hash 834652598, now seen corresponding path program 1 times [2018-11-18 14:21:44,845 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:21:44,845 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:21:44,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:21:44,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:21:44,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:21:44,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:21:44,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:21:44,921 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:21:44,922 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 14:21:44,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 14:21:44,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 14:21:44,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 14:21:44,923 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand 4 states. [2018-11-18 14:21:44,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:21:44,981 INFO L93 Difference]: Finished difference Result 53 states and 64 transitions. [2018-11-18 14:21:44,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 14:21:44,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-11-18 14:21:44,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:21:44,983 INFO L225 Difference]: With dead ends: 53 [2018-11-18 14:21:44,983 INFO L226 Difference]: Without dead ends: 44 [2018-11-18 14:21:44,983 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-18 14:21:44,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-18 14:21:44,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2018-11-18 14:21:44,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-18 14:21:44,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2018-11-18 14:21:44,989 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 21 [2018-11-18 14:21:44,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:21:44,989 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2018-11-18 14:21:44,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 14:21:44,989 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2018-11-18 14:21:44,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-18 14:21:44,990 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:21:44,990 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:21:44,990 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:21:44,990 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:21:44,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1517774059, now seen corresponding path program 1 times [2018-11-18 14:21:44,990 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:21:44,991 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:21:44,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:21:44,991 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:21:44,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:21:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:21:45,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:21:45,056 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:21:45,057 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 14:21:45,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 14:21:45,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 14:21:45,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 14:21:45,057 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 4 states. [2018-11-18 14:21:45,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:21:45,114 INFO L93 Difference]: Finished difference Result 63 states and 76 transitions. [2018-11-18 14:21:45,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 14:21:45,114 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-11-18 14:21:45,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:21:45,116 INFO L225 Difference]: With dead ends: 63 [2018-11-18 14:21:45,116 INFO L226 Difference]: Without dead ends: 52 [2018-11-18 14:21:45,116 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-18 14:21:45,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-11-18 14:21:45,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2018-11-18 14:21:45,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-11-18 14:21:45,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2018-11-18 14:21:45,121 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 24 [2018-11-18 14:21:45,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:21:45,122 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2018-11-18 14:21:45,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 14:21:45,122 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2018-11-18 14:21:45,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-18 14:21:45,122 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:21:45,122 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] [2018-11-18 14:21:45,123 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:21:45,123 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:21:45,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1389037083, now seen corresponding path program 1 times [2018-11-18 14:21:45,123 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:21:45,123 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:21:45,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:21:45,124 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:21:45,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:21:45,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:21:45,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:21:45,209 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:21:45,210 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-18 14:21:45,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 14:21:45,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 14:21:45,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-18 14:21:45,210 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand 6 states. [2018-11-18 14:21:45,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:21:45,367 INFO L93 Difference]: Finished difference Result 92 states and 116 transitions. [2018-11-18 14:21:45,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 14:21:45,367 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-11-18 14:21:45,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:21:45,368 INFO L225 Difference]: With dead ends: 92 [2018-11-18 14:21:45,368 INFO L226 Difference]: Without dead ends: 57 [2018-11-18 14:21:45,368 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-18 14:21:45,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-11-18 14:21:45,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2018-11-18 14:21:45,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-11-18 14:21:45,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 65 transitions. [2018-11-18 14:21:45,373 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 65 transitions. Word has length 25 [2018-11-18 14:21:45,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:21:45,373 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 65 transitions. [2018-11-18 14:21:45,374 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 14:21:45,374 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 65 transitions. [2018-11-18 14:21:45,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-18 14:21:45,374 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:21:45,374 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 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] [2018-11-18 14:21:45,375 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:21:45,375 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:21:45,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1377353120, now seen corresponding path program 1 times [2018-11-18 14:21:45,375 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:21:45,375 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:21:45,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:21:45,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:21:45,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:21:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:21:45,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:21:45,423 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 14:21:45,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 02:21:45 BoogieIcfgContainer [2018-11-18 14:21:45,445 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 14:21:45,445 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 14:21:45,445 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 14:21:45,445 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 14:21:45,446 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:21:44" (3/4) ... [2018-11-18 14:21:45,447 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 14:21:45,486 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_937bb381-ee6a-4fb5-9f20-5ce7f762df05/bin-2019/uautomizer/witness.graphml [2018-11-18 14:21:45,486 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 14:21:45,487 INFO L168 Benchmark]: Toolchain (without parser) took 1561.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 957.6 MB in the beginning and 998.3 MB in the end (delta: -40.7 MB). Peak memory consumption was 98.8 MB. Max. memory is 11.5 GB. [2018-11-18 14:21:45,488 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 14:21:45,488 INFO L168 Benchmark]: CACSL2BoogieTranslator took 358.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 957.6 MB in the beginning and 1.1 GB in the end (delta: -172.6 MB). Peak memory consumption was 35.7 MB. Max. memory is 11.5 GB. [2018-11-18 14:21:45,488 INFO L168 Benchmark]: Boogie Preprocessor took 36.97 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 14:21:45,489 INFO L168 Benchmark]: RCFGBuilder took 311.51 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: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 11.5 GB. [2018-11-18 14:21:45,489 INFO L168 Benchmark]: TraceAbstraction took 811.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 998.3 MB in the end (delta: 81.6 MB). Peak memory consumption was 81.6 MB. Max. memory is 11.5 GB. [2018-11-18 14:21:45,489 INFO L168 Benchmark]: Witness Printer took 40.76 ms. Allocated memory is still 1.2 GB. Free memory is still 998.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 14:21:45,491 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 358.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 957.6 MB in the beginning and 1.1 GB in the end (delta: -172.6 MB). Peak memory consumption was 35.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 36.97 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 311.51 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: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 811.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 998.3 MB in the end (delta: 81.6 MB). Peak memory consumption was 81.6 MB. Max. memory is 11.5 GB. * Witness Printer took 40.76 ms. Allocated memory is still 1.2 GB. Free memory is still 998.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 679]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L627] int flag = 1; [L628] EXPR, FCALL malloc(sizeof(struct node)) [L628] List a = (List) malloc(sizeof(struct node)); VAL [a={10:0}, flag=1, malloc(sizeof(struct node))={10:0}] [L629] COND FALSE !(a == 0) VAL [a={10:0}, flag=1, malloc(sizeof(struct node))={10:0}] [L630] List t; [L631] List l1; [L632] List l2; [L633] List b; [L634] List u; [L635] List p = a; VAL [a={10:0}, flag=1, malloc(sizeof(struct node))={10:0}, p={10:0}] [L636] COND TRUE __VERIFIER_nondet_int() [L637] COND TRUE \read(flag) [L638] FCALL p->h = 1 [L639] flag = 0 VAL [a={10:0}, flag=0, malloc(sizeof(struct node))={10:0}, p={10:0}] [L644] EXPR, FCALL malloc(sizeof(struct node)) [L644] t = (List) malloc(sizeof(struct node)) VAL [a={10:0}, flag=0, malloc(sizeof(struct node))={12:0}, malloc(sizeof(struct node))={10:0}, p={10:0}, t={12:0}] [L645] COND FALSE !(t == 0) VAL [a={10:0}, flag=0, malloc(sizeof(struct node))={12:0}, malloc(sizeof(struct node))={10:0}, p={10:0}, t={12:0}] [L646] FCALL p->n = t [L647] EXPR, FCALL p->n [L647] p = p->n [L636] COND FALSE !(__VERIFIER_nondet_int()) [L649] FCALL p->h = 3 [L650] EXPR, FCALL a->h VAL [a={10:0}, a->h=1, flag=0, malloc(sizeof(struct node))={12:0}, malloc(sizeof(struct node))={10:0}, p={12:0}, t={12:0}] [L650] COND FALSE !(a->h == 3) [L651] flag = 1 [L652] l1 = 0 [L653] l2 = 0 [L654] p = a VAL [a={10:0}, flag=1, l1={0:0}, l2={0:0}, malloc(sizeof(struct node))={12:0}, malloc(sizeof(struct node))={10:0}, p={10:0}, t={12:0}] [L655] EXPR, FCALL p->h VAL [a={10:0}, flag=1, l1={0:0}, l2={0:0}, malloc(sizeof(struct node))={12:0}, malloc(sizeof(struct node))={10:0}, p={10:0}, p->h=1, t={12:0}] [L655] COND TRUE p->h != 3 [L656] t = p [L657] EXPR, FCALL p->n [L657] p = p->n [L658] COND TRUE \read(flag) [L659] FCALL t->n = l1 [L660] l1 = t [L661] flag = 0 VAL [a={10:0}, flag=0, l1={10:0}, l2={0:0}, malloc(sizeof(struct node))={12:0}, malloc(sizeof(struct node))={10:0}, p={12:0}, t={10:0}] [L655] EXPR, FCALL p->h VAL [a={10:0}, flag=0, l1={10:0}, l2={0:0}, malloc(sizeof(struct node))={12:0}, malloc(sizeof(struct node))={10:0}, p={12:0}, p->h=3, t={10:0}] [L655] COND FALSE !(p->h != 3) [L668] p = l1 VAL [a={10:0}, flag=0, l1={10:0}, l2={0:0}, malloc(sizeof(struct node))={12:0}, malloc(sizeof(struct node))={10:0}, p={10:0}, t={10:0}] [L669] COND TRUE p != 0 [L670] EXPR, FCALL p->h VAL [a={10:0}, flag=0, l1={10:0}, l2={0:0}, malloc(sizeof(struct node))={12:0}, malloc(sizeof(struct node))={10:0}, p={10:0}, p->h=1, t={10:0}] [L670] COND TRUE p->h != 2 [L679] __VERIFIER_error() VAL [a={10:0}, flag=0, l1={10:0}, l2={0:0}, malloc(sizeof(struct node))={12:0}, malloc(sizeof(struct node))={10:0}, p={10:0}, t={10:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 42 locations, 1 error locations. UNSAFE Result, 0.7s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 147 SDtfs, 32 SDslu, 204 SDs, 0 SdLazy, 97 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 119 NumberOfCodeBlocks, 119 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 4779 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 3/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...