./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/list-ext3-properties/sll_length_check_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_0df4ec54-fc5d-4467-a987-85440bc700bc/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0df4ec54-fc5d-4467-a987-85440bc700bc/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0df4ec54-fc5d-4467-a987-85440bc700bc/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0df4ec54-fc5d-4467-a987-85440bc700bc/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_length_check_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_0df4ec54-fc5d-4467-a987-85440bc700bc/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0df4ec54-fc5d-4467-a987-85440bc700bc/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 1d36d9c90d70f68ab71543f184cd64aeaf02e524 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 13:17:15,319 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 13:17:15,320 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 13:17:15,326 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 13:17:15,326 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 13:17:15,327 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 13:17:15,328 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 13:17:15,329 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 13:17:15,330 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 13:17:15,330 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 13:17:15,331 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 13:17:15,331 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 13:17:15,332 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 13:17:15,333 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 13:17:15,333 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 13:17:15,334 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 13:17:15,334 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 13:17:15,336 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 13:17:15,337 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 13:17:15,338 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 13:17:15,338 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 13:17:15,339 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 13:17:15,341 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 13:17:15,341 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 13:17:15,341 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 13:17:15,342 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 13:17:15,342 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 13:17:15,343 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 13:17:15,343 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 13:17:15,344 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 13:17:15,344 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 13:17:15,345 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 13:17:15,345 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 13:17:15,345 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 13:17:15,345 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 13:17:15,346 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 13:17:15,346 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0df4ec54-fc5d-4467-a987-85440bc700bc/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-10 13:17:15,353 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 13:17:15,353 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 13:17:15,354 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 13:17:15,354 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 13:17:15,354 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 13:17:15,354 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 13:17:15,355 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 13:17:15,355 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 13:17:15,355 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 13:17:15,355 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 13:17:15,355 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 13:17:15,355 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 13:17:15,356 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 13:17:15,356 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 13:17:15,356 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 13:17:15,356 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 13:17:15,356 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 13:17:15,356 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 13:17:15,357 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 13:17:15,357 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 13:17:15,357 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 13:17:15,357 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 13:17:15,357 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 13:17:15,357 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 13:17:15,357 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 13:17:15,358 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 13:17:15,358 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 13:17:15,358 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 13:17:15,358 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 13:17:15,358 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_0df4ec54-fc5d-4467-a987-85440bc700bc/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 -> 1d36d9c90d70f68ab71543f184cd64aeaf02e524 [2018-11-10 13:17:15,381 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 13:17:15,388 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 13:17:15,390 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 13:17:15,391 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 13:17:15,391 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 13:17:15,392 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0df4ec54-fc5d-4467-a987-85440bc700bc/bin-2019/uautomizer/../../sv-benchmarks/c/list-ext3-properties/sll_length_check_false-unreach-call_false-valid-memcleanup.i [2018-11-10 13:17:15,430 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0df4ec54-fc5d-4467-a987-85440bc700bc/bin-2019/uautomizer/data/e6cd9d51c/cee5410184bd4c0ba8663d0d921df379/FLAGea50e246d [2018-11-10 13:17:15,873 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 13:17:15,873 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0df4ec54-fc5d-4467-a987-85440bc700bc/sv-benchmarks/c/list-ext3-properties/sll_length_check_false-unreach-call_false-valid-memcleanup.i [2018-11-10 13:17:15,881 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0df4ec54-fc5d-4467-a987-85440bc700bc/bin-2019/uautomizer/data/e6cd9d51c/cee5410184bd4c0ba8663d0d921df379/FLAGea50e246d [2018-11-10 13:17:15,890 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0df4ec54-fc5d-4467-a987-85440bc700bc/bin-2019/uautomizer/data/e6cd9d51c/cee5410184bd4c0ba8663d0d921df379 [2018-11-10 13:17:15,892 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 13:17:15,892 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 13:17:15,893 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 13:17:15,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 13:17:15,895 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 13:17:15,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 01:17:15" (1/1) ... [2018-11-10 13:17:15,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19a8e204 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:17:15, skipping insertion in model container [2018-11-10 13:17:15,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 01:17:15" (1/1) ... [2018-11-10 13:17:15,904 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 13:17:15,931 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 13:17:16,105 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 13:17:16,111 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 13:17:16,141 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 13:17:16,163 INFO L193 MainTranslator]: Completed translation [2018-11-10 13:17:16,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:17:16 WrapperNode [2018-11-10 13:17:16,164 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 13:17:16,164 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 13:17:16,165 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 13:17:16,165 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 13:17:16,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:17:16" (1/1) ... [2018-11-10 13:17:16,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:17:16" (1/1) ... [2018-11-10 13:17:16,225 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:17:16" (1/1) ... [2018-11-10 13:17:16,225 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:17:16" (1/1) ... [2018-11-10 13:17:16,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:17:16" (1/1) ... [2018-11-10 13:17:16,236 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:17:16" (1/1) ... [2018-11-10 13:17:16,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:17:16" (1/1) ... [2018-11-10 13:17:16,241 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 13:17:16,242 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 13:17:16,242 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 13:17:16,242 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 13:17:16,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:17:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0df4ec54-fc5d-4467-a987-85440bc700bc/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 13:17:16,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 13:17:16,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 13:17:16,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2018-11-10 13:17:16,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2018-11-10 13:17:16,281 INFO L138 BoogieDeclarations]: Found implementation of procedure exit [2018-11-10 13:17:16,281 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2018-11-10 13:17:16,281 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2018-11-10 13:17:16,282 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2018-11-10 13:17:16,282 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 13:17:16,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 13:17:16,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-10 13:17:16,282 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2018-11-10 13:17:16,282 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2018-11-10 13:17:16,282 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-10 13:17:16,282 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-10 13:17:16,283 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-10 13:17:16,283 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-10 13:17:16,283 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-10 13:17:16,283 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-10 13:17:16,283 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-10 13:17:16,283 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-10 13:17:16,283 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-10 13:17:16,283 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-10 13:17:16,283 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-10 13:17:16,284 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-10 13:17:16,284 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-10 13:17:16,284 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-10 13:17:16,284 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-10 13:17:16,284 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-10 13:17:16,284 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-10 13:17:16,284 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-10 13:17:16,284 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-10 13:17:16,284 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-10 13:17:16,284 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-10 13:17:16,285 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-10 13:17:16,285 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-10 13:17:16,285 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-10 13:17:16,285 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-10 13:17:16,285 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-10 13:17:16,285 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-10 13:17:16,285 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-10 13:17:16,285 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-10 13:17:16,285 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-10 13:17:16,285 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-10 13:17:16,286 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-10 13:17:16,286 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-10 13:17:16,286 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-10 13:17:16,286 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-10 13:17:16,286 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-10 13:17:16,286 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-10 13:17:16,286 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-10 13:17:16,286 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-10 13:17:16,286 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-10 13:17:16,286 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-10 13:17:16,287 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-10 13:17:16,287 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-10 13:17:16,287 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-10 13:17:16,287 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-10 13:17:16,287 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-10 13:17:16,287 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-10 13:17:16,287 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-10 13:17:16,287 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-10 13:17:16,287 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-10 13:17:16,287 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-10 13:17:16,288 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-10 13:17:16,288 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-10 13:17:16,288 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-10 13:17:16,288 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-10 13:17:16,288 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-10 13:17:16,288 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-10 13:17:16,288 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-10 13:17:16,288 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2018-11-10 13:17:16,288 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-10 13:17:16,288 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-10 13:17:16,288 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2018-11-10 13:17:16,289 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-10 13:17:16,289 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-10 13:17:16,289 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2018-11-10 13:17:16,289 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-10 13:17:16,289 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-10 13:17:16,289 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-10 13:17:16,289 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-10 13:17:16,289 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-10 13:17:16,289 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-10 13:17:16,289 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-10 13:17:16,290 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-10 13:17:16,290 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-10 13:17:16,290 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-10 13:17:16,290 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-10 13:17:16,290 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-10 13:17:16,290 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-10 13:17:16,290 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-10 13:17:16,290 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-10 13:17:16,290 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-10 13:17:16,290 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-10 13:17:16,291 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-10 13:17:16,291 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-10 13:17:16,291 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-10 13:17:16,291 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-10 13:17:16,291 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-10 13:17:16,291 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-10 13:17:16,291 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-10 13:17:16,291 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-10 13:17:16,291 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-10 13:17:16,291 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-10 13:17:16,292 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-10 13:17:16,292 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-10 13:17:16,292 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-10 13:17:16,292 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-10 13:17:16,292 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-10 13:17:16,292 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-10 13:17:16,292 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-10 13:17:16,292 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-10 13:17:16,292 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-10 13:17:16,292 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-10 13:17:16,293 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-10 13:17:16,293 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2018-11-10 13:17:16,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-10 13:17:16,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-10 13:17:16,293 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2018-11-10 13:17:16,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-10 13:17:16,293 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2018-11-10 13:17:16,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-10 13:17:16,293 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 13:17:16,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 13:17:16,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 13:17:16,586 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 13:17:16,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 01:17:16 BoogieIcfgContainer [2018-11-10 13:17:16,587 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 13:17:16,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 13:17:16,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 13:17:16,590 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 13:17:16,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 01:17:15" (1/3) ... [2018-11-10 13:17:16,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d6a900 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 01:17:16, skipping insertion in model container [2018-11-10 13:17:16,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:17:16" (2/3) ... [2018-11-10 13:17:16,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d6a900 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 01:17:16, skipping insertion in model container [2018-11-10 13:17:16,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 01:17:16" (3/3) ... [2018-11-10 13:17:16,593 INFO L112 eAbstractionObserver]: Analyzing ICFG sll_length_check_false-unreach-call_false-valid-memcleanup.i [2018-11-10 13:17:16,600 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 13:17:16,607 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 13:17:16,620 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 13:17:16,646 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 13:17:16,647 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 13:17:16,647 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 13:17:16,647 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 13:17:16,647 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 13:17:16,647 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 13:17:16,647 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 13:17:16,647 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 13:17:16,648 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 13:17:16,662 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2018-11-10 13:17:16,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-10 13:17:16,668 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 13:17:16,668 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] [2018-11-10 13:17:16,670 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 13:17:16,675 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 13:17:16,675 INFO L82 PathProgramCache]: Analyzing trace with hash 2032154794, now seen corresponding path program 1 times [2018-11-10 13:17:16,677 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 13:17:16,677 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 13:17:16,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:17:16,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 13:17:16,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:17:16,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 13:17:16,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 13:17:16,774 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 13:17:16,774 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 13:17:16,778 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 13:17:16,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 13:17:16,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 13:17:16,789 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2018-11-10 13:17:16,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 13:17:16,803 INFO L93 Difference]: Finished difference Result 98 states and 116 transitions. [2018-11-10 13:17:16,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 13:17:16,804 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2018-11-10 13:17:16,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 13:17:16,810 INFO L225 Difference]: With dead ends: 98 [2018-11-10 13:17:16,810 INFO L226 Difference]: Without dead ends: 36 [2018-11-10 13:17:16,813 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 13:17:16,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-10 13:17:16,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-10 13:17:16,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-10 13:17:16,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2018-11-10 13:17:16,843 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 23 [2018-11-10 13:17:16,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 13:17:16,843 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2018-11-10 13:17:16,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 13:17:16,844 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2018-11-10 13:17:16,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-10 13:17:16,844 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 13:17:16,844 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, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 13:17:16,844 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 13:17:16,845 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 13:17:16,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1341008234, now seen corresponding path program 1 times [2018-11-10 13:17:16,845 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 13:17:16,845 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 13:17:16,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:17:16,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 13:17:16,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:17:16,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 13:17:16,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 13:17:16,919 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 13:17:16,919 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 13:17:16,920 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 13:17:16,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 13:17:16,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 13:17:16,920 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 5 states. [2018-11-10 13:17:16,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 13:17:16,993 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2018-11-10 13:17:16,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 13:17:16,993 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2018-11-10 13:17:16,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 13:17:16,994 INFO L225 Difference]: With dead ends: 60 [2018-11-10 13:17:16,994 INFO L226 Difference]: Without dead ends: 43 [2018-11-10 13:17:16,995 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 13:17:16,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-10 13:17:16,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2018-11-10 13:17:16,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-10 13:17:17,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2018-11-10 13:17:17,000 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 28 [2018-11-10 13:17:17,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 13:17:17,000 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2018-11-10 13:17:17,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 13:17:17,000 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2018-11-10 13:17:17,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-10 13:17:17,001 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 13:17:17,001 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 13:17:17,001 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 13:17:17,002 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 13:17:17,002 INFO L82 PathProgramCache]: Analyzing trace with hash -804469299, now seen corresponding path program 1 times [2018-11-10 13:17:17,002 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 13:17:17,002 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 13:17:17,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:17:17,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 13:17:17,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:17:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 13:17:17,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 13:17:17,114 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 13:17:17,114 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-11-10 13:17:17,114 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-10 13:17:17,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-10 13:17:17,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-11-10 13:17:17,115 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 10 states. [2018-11-10 13:17:17,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 13:17:17,236 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2018-11-10 13:17:17,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-10 13:17:17,237 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2018-11-10 13:17:17,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 13:17:17,238 INFO L225 Difference]: With dead ends: 54 [2018-11-10 13:17:17,238 INFO L226 Difference]: Without dead ends: 47 [2018-11-10 13:17:17,238 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2018-11-10 13:17:17,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-11-10 13:17:17,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 40. [2018-11-10 13:17:17,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-10 13:17:17,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2018-11-10 13:17:17,242 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 35 [2018-11-10 13:17:17,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 13:17:17,243 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2018-11-10 13:17:17,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-10 13:17:17,243 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2018-11-10 13:17:17,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-10 13:17:17,243 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 13:17:17,244 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 13:17:17,244 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 13:17:17,244 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 13:17:17,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1307993996, now seen corresponding path program 1 times [2018-11-10 13:17:17,244 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 13:17:17,244 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 13:17:17,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:17:17,246 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 13:17:17,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:17:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 13:17:17,296 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-10 13:17:17,296 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 13:17:17,296 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0df4ec54-fc5d-4467-a987-85440bc700bc/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 13:17:17,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 13:17:17,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 13:17:17,335 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 13:17:17,359 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-10 13:17:17,379 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 13:17:17,379 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-10 13:17:17,380 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-10 13:17:17,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-10 13:17:17,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-10 13:17:17,380 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 6 states. [2018-11-10 13:17:17,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 13:17:17,428 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2018-11-10 13:17:17,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 13:17:17,428 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2018-11-10 13:17:17,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 13:17:17,429 INFO L225 Difference]: With dead ends: 71 [2018-11-10 13:17:17,430 INFO L226 Difference]: Without dead ends: 52 [2018-11-10 13:17:17,430 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-11-10 13:17:17,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-11-10 13:17:17,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2018-11-10 13:17:17,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-11-10 13:17:17,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2018-11-10 13:17:17,435 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 39 [2018-11-10 13:17:17,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 13:17:17,435 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2018-11-10 13:17:17,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-10 13:17:17,435 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2018-11-10 13:17:17,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-11-10 13:17:17,436 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 13:17:17,436 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2018-11-10 13:17:17,436 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 13:17:17,437 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 13:17:17,437 INFO L82 PathProgramCache]: Analyzing trace with hash 845009117, now seen corresponding path program 2 times [2018-11-10 13:17:17,437 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 13:17:17,437 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 13:17:17,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:17:17,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 13:17:17,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:17:17,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 13:17:17,578 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 13:17:17,578 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 13:17:17,578 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0df4ec54-fc5d-4467-a987-85440bc700bc/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 13:17:17,584 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 13:17:17,605 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 13:17:17,605 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 13:17:17,608 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 13:17:17,688 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-10 13:17:17,703 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 13:17:17,703 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7] total 19 [2018-11-10 13:17:17,704 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-10 13:17:17,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-10 13:17:17,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2018-11-10 13:17:17,704 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand 19 states. [2018-11-10 13:17:18,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 13:17:18,092 INFO L93 Difference]: Finished difference Result 87 states and 92 transitions. [2018-11-10 13:17:18,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-10 13:17:18,093 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 46 [2018-11-10 13:17:18,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 13:17:18,093 INFO L225 Difference]: With dead ends: 87 [2018-11-10 13:17:18,093 INFO L226 Difference]: Without dead ends: 65 [2018-11-10 13:17:18,094 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=966, Unknown=0, NotChecked=0, Total=1122 [2018-11-10 13:17:18,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-11-10 13:17:18,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 58. [2018-11-10 13:17:18,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-11-10 13:17:18,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2018-11-10 13:17:18,098 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 46 [2018-11-10 13:17:18,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 13:17:18,098 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2018-11-10 13:17:18,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-10 13:17:18,098 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2018-11-10 13:17:18,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-10 13:17:18,099 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 13:17:18,100 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2018-11-10 13:17:18,100 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 13:17:18,101 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 13:17:18,101 INFO L82 PathProgramCache]: Analyzing trace with hash -420202629, now seen corresponding path program 3 times [2018-11-10 13:17:18,101 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 13:17:18,101 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 13:17:18,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:17:18,102 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 13:17:18,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:17:18,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 13:17:18,200 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-11-10 13:17:18,200 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 13:17:18,200 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0df4ec54-fc5d-4467-a987-85440bc700bc/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 13:17:18,207 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-10 13:17:18,227 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-10 13:17:18,227 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 13:17:18,230 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 13:17:18,254 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-11-10 13:17:18,270 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 13:17:18,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-11-10 13:17:18,271 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-10 13:17:18,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-10 13:17:18,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-11-10 13:17:18,271 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand 9 states. [2018-11-10 13:17:18,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 13:17:18,336 INFO L93 Difference]: Finished difference Result 80 states and 87 transitions. [2018-11-10 13:17:18,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 13:17:18,336 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2018-11-10 13:17:18,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 13:17:18,339 INFO L225 Difference]: With dead ends: 80 [2018-11-10 13:17:18,339 INFO L226 Difference]: Without dead ends: 76 [2018-11-10 13:17:18,339 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-11-10 13:17:18,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-11-10 13:17:18,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2018-11-10 13:17:18,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-11-10 13:17:18,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2018-11-10 13:17:18,352 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 57 [2018-11-10 13:17:18,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 13:17:18,352 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2018-11-10 13:17:18,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-10 13:17:18,353 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2018-11-10 13:17:18,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-11-10 13:17:18,354 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 13:17:18,355 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 13:17:18,355 INFO L424 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 13:17:18,355 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 13:17:18,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1063551778, now seen corresponding path program 4 times [2018-11-10 13:17:18,355 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 13:17:18,358 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 13:17:18,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:17:18,359 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 13:17:18,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:17:18,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 13:17:18,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 13:17:18,410 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 13:17:18,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 01:17:18 BoogieIcfgContainer [2018-11-10 13:17:18,440 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 13:17:18,440 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 13:17:18,440 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 13:17:18,440 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 13:17:18,441 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 01:17:16" (3/4) ... [2018-11-10 13:17:18,442 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-10 13:17:18,483 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_0df4ec54-fc5d-4467-a987-85440bc700bc/bin-2019/uautomizer/witness.graphml [2018-11-10 13:17:18,483 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 13:17:18,484 INFO L168 Benchmark]: Toolchain (without parser) took 2591.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 210.2 MB). Free memory was 951.1 MB in the beginning and 1.2 GB in the end (delta: -226.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 13:17:18,485 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 13:17:18,485 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.20 ms. Allocated memory is still 1.0 GB. Free memory was 951.1 MB in the beginning and 923.2 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. [2018-11-10 13:17:18,486 INFO L168 Benchmark]: Boogie Preprocessor took 76.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 923.2 MB in the beginning and 1.1 GB in the end (delta: -211.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB. [2018-11-10 13:17:18,486 INFO L168 Benchmark]: RCFGBuilder took 345.44 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: 51.2 MB). Peak memory consumption was 51.2 MB. Max. memory is 11.5 GB. [2018-11-10 13:17:18,486 INFO L168 Benchmark]: TraceAbstraction took 1852.22 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 69.2 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -99.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 13:17:18,487 INFO L168 Benchmark]: Witness Printer took 43.07 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 11.5 GB. [2018-11-10 13:17:18,490 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 271.20 ms. Allocated memory is still 1.0 GB. Free memory was 951.1 MB in the beginning and 923.2 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 76.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 923.2 MB in the beginning and 1.1 GB in the end (delta: -211.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 345.44 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: 51.2 MB). Peak memory consumption was 51.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1852.22 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 69.2 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -99.1 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 43.07 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 602]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L592] int len = 2; VAL [len=2] [L593] len < 32 && __VERIFIER_nondet_int() [L593] len < 32 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, len=2, len < 32 && __VERIFIER_nondet_int()=0] [L593] COND FALSE !(len < 32 && __VERIFIER_nondet_int()) [L596] CALL, EXPR sll_create(len + 1) VAL [\old(len)=3] [L564] SLL head = ((void *)0); VAL [\old(len)=3, head={0:0}, len=3] [L565] COND TRUE len > 0 VAL [\old(len)=3, head={0:0}, len=3] [L566] EXPR, FCALL malloc(sizeof(struct node)) VAL [\old(len)=3, head={0:0}, len=3, malloc(sizeof(struct node))={7:0}] [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); VAL [\old(len)=3, head={0:0}, len=3, malloc(sizeof(struct node))={7:0}, new_head={7:0}] [L567] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=3, head={0:0}, len=3, malloc(sizeof(struct node))={7:0}, new_head={7:0}] [L570] FCALL new_head->next = head VAL [\old(len)=3, head={0:0}, len=3, malloc(sizeof(struct node))={7:0}, new_head={7:0}] [L571] head = new_head [L572] len-- VAL [\old(len)=3, head={7:0}, len=2, malloc(sizeof(struct node))={7:0}, new_head={7:0}] [L565] COND TRUE len > 0 VAL [\old(len)=3, head={7:0}, len=2, malloc(sizeof(struct node))={7:0}, new_head={7:0}] [L566] EXPR, FCALL malloc(sizeof(struct node)) VAL [\old(len)=3, head={7:0}, len=2, malloc(sizeof(struct node))={5:0}, new_head={7:0}] [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); VAL [\old(len)=3, head={7:0}, len=2, malloc(sizeof(struct node))={5:0}, new_head={5:0}] [L567] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=3, head={7:0}, len=2, malloc(sizeof(struct node))={5:0}, new_head={5:0}] [L570] FCALL new_head->next = head VAL [\old(len)=3, head={7:0}, len=2, malloc(sizeof(struct node))={5:0}, new_head={5:0}] [L571] head = new_head [L572] len-- VAL [\old(len)=3, head={5:0}, len=1, malloc(sizeof(struct node))={5:0}, new_head={5:0}] [L565] COND TRUE len > 0 VAL [\old(len)=3, head={5:0}, len=1, malloc(sizeof(struct node))={5:0}, new_head={5:0}] [L566] EXPR, FCALL malloc(sizeof(struct node)) VAL [\old(len)=3, head={5:0}, len=1, malloc(sizeof(struct node))={8:0}, new_head={5:0}] [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); VAL [\old(len)=3, head={5:0}, len=1, malloc(sizeof(struct node))={8:0}, new_head={8:0}] [L567] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=3, head={5:0}, len=1, malloc(sizeof(struct node))={8:0}, new_head={8:0}] [L570] FCALL new_head->next = head VAL [\old(len)=3, head={5:0}, len=1, malloc(sizeof(struct node))={8:0}, new_head={8:0}] [L571] head = new_head [L572] len-- VAL [\old(len)=3, head={8:0}, len=0, malloc(sizeof(struct node))={8:0}, new_head={8:0}] [L565] COND FALSE !(len > 0) VAL [\old(len)=3, head={8:0}, len=0, malloc(sizeof(struct node))={8:0}, new_head={8:0}] [L574] RET return head; VAL [\old(len)=3, \result={8:0}, head={8:0}, len=0, malloc(sizeof(struct node))={8:0}, new_head={8:0}] [L596] EXPR sll_create(len + 1) VAL [len=2, sll_create(len + 1)={8:0}] [L596] SLL s = sll_create(len + 1); [L597] CALL, EXPR sll_length(s) VAL [head={8:0}] [L577] int len = 0; VAL [head={8:0}, head={8:0}, len=0] [L578] COND TRUE \read(head) [L579] len++ VAL [head={8:0}, head={8:0}, len=1] [L580] EXPR, FCALL head->next VAL [head={8:0}, head={8:0}, head->next={5:0}, len=1] [L580] head = head->next [L578] COND TRUE \read(head) [L579] len++ VAL [head={5:0}, head={8:0}, len=2] [L580] EXPR, FCALL head->next VAL [head={5:0}, head={8:0}, head->next={7:0}, len=2] [L580] head = head->next [L578] COND TRUE \read(head) [L579] len++ VAL [head={7:0}, head={8:0}, len=3] [L580] EXPR, FCALL head->next VAL [head={7:0}, head={8:0}, head->next={0:0}, len=3] [L580] head = head->next [L578] COND FALSE !(\read(head)) VAL [head={8:0}, head={0:0}, len=3] [L582] RET return len; VAL [\result=3, head={0:0}, head={8:0}, len=3] [L597] EXPR sll_length(s) VAL [len=2, s={8:0}, sll_length(s)=3] [L597] COND TRUE len != sll_length(s) [L602] __VERIFIER_error() VAL [len=2, s={8:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 62 locations, 1 error locations. UNSAFE Result, 1.7s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 226 SDtfs, 159 SDslu, 1061 SDs, 0 SdLazy, 619 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 210 GetRequests, 147 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 28 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 431 NumberOfCodeBlocks, 424 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 361 ConstructedInterpolants, 0 QuantifiedInterpolants, 44523 SizeOfPredicates, 6 NumberOfNonLiveVariables, 443 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 67/106 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...