./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/count_down-alloca_true-valid-memsafety_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_2886e9f0-8613-4364-9153-c495e663f89e/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2886e9f0-8613-4364-9153-c495e663f89e/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2886e9f0-8613-4364-9153-c495e663f89e/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2886e9f0-8613-4364-9153-c495e663f89e/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/count_down-alloca_true-valid-memsafety_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_2886e9f0-8613-4364-9153-c495e663f89e/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2886e9f0-8613-4364-9153-c495e663f89e/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f25230c4e3ada1aa4514132cfb87afb0e539c23b ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 12:15:15,393 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 12:15:15,394 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 12:15:15,400 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 12:15:15,400 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 12:15:15,401 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 12:15:15,402 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 12:15:15,402 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 12:15:15,403 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 12:15:15,404 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 12:15:15,404 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 12:15:15,404 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 12:15:15,405 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 12:15:15,405 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 12:15:15,406 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 12:15:15,406 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 12:15:15,406 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 12:15:15,407 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 12:15:15,408 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 12:15:15,409 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 12:15:15,409 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 12:15:15,410 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 12:15:15,411 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 12:15:15,411 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 12:15:15,412 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 12:15:15,412 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 12:15:15,413 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 12:15:15,413 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 12:15:15,413 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 12:15:15,414 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 12:15:15,414 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 12:15:15,414 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 12:15:15,415 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 12:15:15,415 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 12:15:15,415 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 12:15:15,415 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 12:15:15,416 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2886e9f0-8613-4364-9153-c495e663f89e/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-12-08 12:15:15,423 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 12:15:15,423 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 12:15:15,423 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 12:15:15,423 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 12:15:15,424 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 12:15:15,424 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 12:15:15,424 INFO L133 SettingsManager]: * Use SBE=true [2018-12-08 12:15:15,424 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 12:15:15,424 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 12:15:15,424 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-08 12:15:15,424 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 12:15:15,424 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 12:15:15,424 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 12:15:15,424 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-08 12:15:15,424 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-08 12:15:15,425 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-08 12:15:15,425 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 12:15:15,425 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 12:15:15,425 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 12:15:15,425 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 12:15:15,425 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 12:15:15,425 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 12:15:15,425 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 12:15:15,425 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 12:15:15,425 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 12:15:15,426 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 12:15:15,426 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-08 12:15:15,426 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 12:15:15,426 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in 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_2886e9f0-8613-4364-9153-c495e663f89e/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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> f25230c4e3ada1aa4514132cfb87afb0e539c23b [2018-12-08 12:15:15,442 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 12:15:15,449 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 12:15:15,451 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 12:15:15,452 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 12:15:15,452 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 12:15:15,453 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2886e9f0-8613-4364-9153-c495e663f89e/bin-2019/uautomizer/../../sv-benchmarks/c/array-memsafety/count_down-alloca_true-valid-memsafety_true-termination.i [2018-12-08 12:15:15,486 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2886e9f0-8613-4364-9153-c495e663f89e/bin-2019/uautomizer/data/55fe5fb49/0cbf81ea88ff43f9b8d42b605751d8ca/FLAG941dbfd27 [2018-12-08 12:15:15,802 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 12:15:15,803 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2886e9f0-8613-4364-9153-c495e663f89e/sv-benchmarks/c/array-memsafety/count_down-alloca_true-valid-memsafety_true-termination.i [2018-12-08 12:15:15,809 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2886e9f0-8613-4364-9153-c495e663f89e/bin-2019/uautomizer/data/55fe5fb49/0cbf81ea88ff43f9b8d42b605751d8ca/FLAG941dbfd27 [2018-12-08 12:15:16,213 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2886e9f0-8613-4364-9153-c495e663f89e/bin-2019/uautomizer/data/55fe5fb49/0cbf81ea88ff43f9b8d42b605751d8ca [2018-12-08 12:15:16,216 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 12:15:16,217 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-12-08 12:15:16,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 12:15:16,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 12:15:16,220 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 12:15:16,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 12:15:16" (1/1) ... [2018-12-08 12:15:16,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eda5476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 12:15:16, skipping insertion in model container [2018-12-08 12:15:16,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 12:15:16" (1/1) ... [2018-12-08 12:15:16,227 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 12:15:16,245 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 12:15:16,383 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 12:15:16,389 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 12:15:16,447 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 12:15:16,476 INFO L195 MainTranslator]: Completed translation [2018-12-08 12:15:16,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 12:15:16 WrapperNode [2018-12-08 12:15:16,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 12:15:16,477 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 12:15:16,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 12:15:16,477 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 12:15:16,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 12:15:16" (1/1) ... [2018-12-08 12:15:16,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 12:15:16" (1/1) ... [2018-12-08 12:15:16,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 12:15:16" (1/1) ... [2018-12-08 12:15:16,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 12:15:16" (1/1) ... [2018-12-08 12:15:16,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 12:15:16" (1/1) ... [2018-12-08 12:15:16,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 12:15:16" (1/1) ... [2018-12-08 12:15:16,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 12:15:16" (1/1) ... [2018-12-08 12:15:16,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 12:15:16,508 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 12:15:16,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 12:15:16,509 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 12:15:16,509 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 12:15:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2886e9f0-8613-4364-9153-c495e663f89e/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 [2018-12-08 12:15:16,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 12:15:16,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 12:15:16,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2018-12-08 12:15:16,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2018-12-08 12:15:16,544 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 12:15:16,544 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2018-12-08 12:15:16,544 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2018-12-08 12:15:16,544 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-12-08 12:15:16,544 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-12-08 12:15:16,544 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-12-08 12:15:16,544 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-12-08 12:15:16,544 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-12-08 12:15:16,544 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-12-08 12:15:16,545 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-12-08 12:15:16,545 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-12-08 12:15:16,545 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-12-08 12:15:16,545 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-12-08 12:15:16,545 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-12-08 12:15:16,545 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-12-08 12:15:16,545 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-12-08 12:15:16,545 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-12-08 12:15:16,545 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-12-08 12:15:16,545 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-12-08 12:15:16,546 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-12-08 12:15:16,546 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-12-08 12:15:16,546 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-12-08 12:15:16,546 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-12-08 12:15:16,546 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-12-08 12:15:16,546 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-12-08 12:15:16,546 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-12-08 12:15:16,546 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-12-08 12:15:16,546 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-12-08 12:15:16,546 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-12-08 12:15:16,546 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-12-08 12:15:16,546 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-12-08 12:15:16,546 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-12-08 12:15:16,546 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-12-08 12:15:16,546 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-12-08 12:15:16,547 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-12-08 12:15:16,547 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-12-08 12:15:16,547 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-12-08 12:15:16,547 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-12-08 12:15:16,547 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-12-08 12:15:16,547 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-12-08 12:15:16,547 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-12-08 12:15:16,547 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-12-08 12:15:16,547 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-12-08 12:15:16,547 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-12-08 12:15:16,547 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-12-08 12:15:16,547 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-12-08 12:15:16,547 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-12-08 12:15:16,547 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-12-08 12:15:16,547 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-12-08 12:15:16,547 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-12-08 12:15:16,548 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-12-08 12:15:16,548 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-12-08 12:15:16,548 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-12-08 12:15:16,548 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-12-08 12:15:16,548 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-12-08 12:15:16,548 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-12-08 12:15:16,548 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-12-08 12:15:16,548 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-12-08 12:15:16,548 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-12-08 12:15:16,548 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-12-08 12:15:16,548 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-12-08 12:15:16,548 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-12-08 12:15:16,548 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-12-08 12:15:16,548 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-12-08 12:15:16,548 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-12-08 12:15:16,548 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-12-08 12:15:16,548 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-12-08 12:15:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-12-08 12:15:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-12-08 12:15:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-12-08 12:15:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-12-08 12:15:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-12-08 12:15:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-12-08 12:15:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-12-08 12:15:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-12-08 12:15:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-12-08 12:15:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-12-08 12:15:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-12-08 12:15:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-12-08 12:15:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-12-08 12:15:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-12-08 12:15:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-12-08 12:15:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-12-08 12:15:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-12-08 12:15:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-12-08 12:15:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-12-08 12:15:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-12-08 12:15:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-12-08 12:15:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-12-08 12:15:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-12-08 12:15:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-12-08 12:15:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-12-08 12:15:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-12-08 12:15:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-12-08 12:15:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-12-08 12:15:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-12-08 12:15:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-12-08 12:15:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-12-08 12:15:16,551 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-12-08 12:15:16,551 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-12-08 12:15:16,551 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-12-08 12:15:16,551 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-12-08 12:15:16,551 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-12-08 12:15:16,551 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-12-08 12:15:16,551 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 12:15:16,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-08 12:15:16,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-08 12:15:16,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-08 12:15:16,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-08 12:15:16,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 12:15:16,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 12:15:16,735 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 12:15:16,735 INFO L280 CfgBuilder]: Removed 3 assue(true) statements. [2018-12-08 12:15:16,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 12:15:16 BoogieIcfgContainer [2018-12-08 12:15:16,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 12:15:16,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 12:15:16,736 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 12:15:16,738 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 12:15:16,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 12:15:16" (1/3) ... [2018-12-08 12:15:16,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30719be5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 12:15:16, skipping insertion in model container [2018-12-08 12:15:16,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 12:15:16" (2/3) ... [2018-12-08 12:15:16,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30719be5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 12:15:16, skipping insertion in model container [2018-12-08 12:15:16,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 12:15:16" (3/3) ... [2018-12-08 12:15:16,740 INFO L112 eAbstractionObserver]: Analyzing ICFG count_down-alloca_true-valid-memsafety_true-termination.i [2018-12-08 12:15:16,745 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 12:15:16,750 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2018-12-08 12:15:16,760 INFO L257 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2018-12-08 12:15:16,775 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 12:15:16,775 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 12:15:16,775 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-08 12:15:16,775 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 12:15:16,775 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 12:15:16,775 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 12:15:16,775 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 12:15:16,775 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 12:15:16,775 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 12:15:16,784 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2018-12-08 12:15:16,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-08 12:15:16,789 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 12:15:16,790 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 12:15:16,791 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2018-12-08 12:15:16,794 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 12:15:16,794 INFO L82 PathProgramCache]: Analyzing trace with hash -355510925, now seen corresponding path program 1 times [2018-12-08 12:15:16,795 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 12:15:16,796 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 12:15:16,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:15:16,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 12:15:16,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:15:16,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 12:15:16,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 12:15:16,886 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 12:15:16,886 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-08 12:15:16,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-08 12:15:16,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 12:15:16,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 12:15:16,898 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2018-12-08 12:15:16,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 12:15:16,927 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2018-12-08 12:15:16,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 12:15:16,929 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-08 12:15:16,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 12:15:16,936 INFO L225 Difference]: With dead ends: 36 [2018-12-08 12:15:16,936 INFO L226 Difference]: Without dead ends: 33 [2018-12-08 12:15:16,938 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 12:15:16,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-12-08 12:15:16,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-12-08 12:15:16,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-08 12:15:16,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-12-08 12:15:16,960 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 10 [2018-12-08 12:15:16,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 12:15:16,960 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-12-08 12:15:16,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-08 12:15:16,960 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-12-08 12:15:16,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-08 12:15:16,961 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 12:15:16,961 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 12:15:16,961 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2018-12-08 12:15:16,961 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 12:15:16,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1951364451, now seen corresponding path program 1 times [2018-12-08 12:15:16,961 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 12:15:16,961 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 12:15:16,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:15:16,962 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 12:15:16,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:15:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 12:15:17,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 12:15:17,056 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 12:15:17,056 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-08 12:15:17,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-08 12:15:17,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-08 12:15:17,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-12-08 12:15:17,058 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 6 states. [2018-12-08 12:15:17,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 12:15:17,113 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2018-12-08 12:15:17,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 12:15:17,113 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2018-12-08 12:15:17,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 12:15:17,113 INFO L225 Difference]: With dead ends: 38 [2018-12-08 12:15:17,114 INFO L226 Difference]: Without dead ends: 38 [2018-12-08 12:15:17,114 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-12-08 12:15:17,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-12-08 12:15:17,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2018-12-08 12:15:17,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-08 12:15:17,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2018-12-08 12:15:17,117 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 12 [2018-12-08 12:15:17,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 12:15:17,117 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2018-12-08 12:15:17,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-08 12:15:17,117 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2018-12-08 12:15:17,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-08 12:15:17,118 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 12:15:17,118 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 12:15:17,118 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2018-12-08 12:15:17,118 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 12:15:17,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1951364450, now seen corresponding path program 1 times [2018-12-08 12:15:17,118 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 12:15:17,118 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 12:15:17,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:15:17,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 12:15:17,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:15:17,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 12:15:17,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 12:15:17,134 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 12:15:17,134 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-08 12:15:17,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-08 12:15:17,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 12:15:17,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 12:15:17,135 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 3 states. [2018-12-08 12:15:17,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 12:15:17,148 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2018-12-08 12:15:17,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 12:15:17,148 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-12-08 12:15:17,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 12:15:17,148 INFO L225 Difference]: With dead ends: 32 [2018-12-08 12:15:17,149 INFO L226 Difference]: Without dead ends: 32 [2018-12-08 12:15:17,149 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 12:15:17,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-12-08 12:15:17,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-12-08 12:15:17,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-12-08 12:15:17,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2018-12-08 12:15:17,151 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 12 [2018-12-08 12:15:17,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 12:15:17,151 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2018-12-08 12:15:17,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-08 12:15:17,151 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2018-12-08 12:15:17,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-08 12:15:17,152 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 12:15:17,152 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 12:15:17,152 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2018-12-08 12:15:17,152 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 12:15:17,152 INFO L82 PathProgramCache]: Analyzing trace with hash 720612124, now seen corresponding path program 1 times [2018-12-08 12:15:17,152 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 12:15:17,152 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 12:15:17,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:15:17,153 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 12:15:17,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:15:17,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 12:15:17,177 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 12:15:17,177 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 12:15:17,177 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2886e9f0-8613-4364-9153-c495e663f89e/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 [2018-12-08 12:15:17,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 12:15:17,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 12:15:17,199 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 12:15:17,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 12:15:17,245 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-08 12:15:17,245 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2018-12-08 12:15:17,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-08 12:15:17,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-08 12:15:17,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-12-08 12:15:17,246 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 7 states. [2018-12-08 12:15:17,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 12:15:17,270 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2018-12-08 12:15:17,270 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-08 12:15:17,270 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2018-12-08 12:15:17,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 12:15:17,271 INFO L225 Difference]: With dead ends: 54 [2018-12-08 12:15:17,271 INFO L226 Difference]: Without dead ends: 54 [2018-12-08 12:15:17,271 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-12-08 12:15:17,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-12-08 12:15:17,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2018-12-08 12:15:17,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-08 12:15:17,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2018-12-08 12:15:17,273 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 16 [2018-12-08 12:15:17,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 12:15:17,273 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2018-12-08 12:15:17,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-08 12:15:17,274 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2018-12-08 12:15:17,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-08 12:15:17,274 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 12:15:17,274 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 12:15:17,274 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2018-12-08 12:15:17,274 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 12:15:17,274 INFO L82 PathProgramCache]: Analyzing trace with hash 327585114, now seen corresponding path program 1 times [2018-12-08 12:15:17,274 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 12:15:17,274 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 12:15:17,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:15:17,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 12:15:17,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:15:17,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 12:15:17,361 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 12:15:17,361 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 12:15:17,361 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2886e9f0-8613-4364-9153-c495e663f89e/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 [2018-12-08 12:15:17,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 12:15:17,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 12:15:17,377 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 12:15:17,394 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-12-08 12:15:17,395 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-08 12:15:17,398 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-08 12:15:17,399 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2018-12-08 12:15:17,427 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 12:15:17,441 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 12:15:17,441 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-12-08 12:15:17,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-08 12:15:17,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-08 12:15:17,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-12-08 12:15:17,442 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 7 states. [2018-12-08 12:15:17,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 12:15:17,489 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2018-12-08 12:15:17,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-08 12:15:17,489 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2018-12-08 12:15:17,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 12:15:17,490 INFO L225 Difference]: With dead ends: 39 [2018-12-08 12:15:17,490 INFO L226 Difference]: Without dead ends: 39 [2018-12-08 12:15:17,490 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-12-08 12:15:17,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-08 12:15:17,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-12-08 12:15:17,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-08 12:15:17,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2018-12-08 12:15:17,492 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 16 [2018-12-08 12:15:17,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 12:15:17,493 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2018-12-08 12:15:17,493 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-08 12:15:17,493 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2018-12-08 12:15:17,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-08 12:15:17,493 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 12:15:17,493 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 12:15:17,493 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2018-12-08 12:15:17,493 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 12:15:17,493 INFO L82 PathProgramCache]: Analyzing trace with hash 864091801, now seen corresponding path program 1 times [2018-12-08 12:15:17,494 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 12:15:17,494 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 12:15:17,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:15:17,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 12:15:17,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:15:17,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 12:15:17,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 12:15:17,551 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 12:15:17,551 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2886e9f0-8613-4364-9153-c495e663f89e/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 [2018-12-08 12:15:17,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 12:15:17,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 12:15:17,566 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 12:15:17,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 12:15:17,602 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 12:15:17,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 9 [2018-12-08 12:15:17,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-08 12:15:17,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-08 12:15:17,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2018-12-08 12:15:17,603 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 10 states. [2018-12-08 12:15:17,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 12:15:17,786 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2018-12-08 12:15:17,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-12-08 12:15:17,786 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-12-08 12:15:17,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 12:15:17,787 INFO L225 Difference]: With dead ends: 100 [2018-12-08 12:15:17,787 INFO L226 Difference]: Without dead ends: 100 [2018-12-08 12:15:17,787 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2018-12-08 12:15:17,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-12-08 12:15:17,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 45. [2018-12-08 12:15:17,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-12-08 12:15:17,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2018-12-08 12:15:17,790 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 17 [2018-12-08 12:15:17,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 12:15:17,791 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2018-12-08 12:15:17,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-08 12:15:17,791 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2018-12-08 12:15:17,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-08 12:15:17,791 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 12:15:17,791 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 12:15:17,791 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2018-12-08 12:15:17,791 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 12:15:17,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1275206298, now seen corresponding path program 1 times [2018-12-08 12:15:17,792 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 12:15:17,792 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 12:15:17,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:15:17,792 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 12:15:17,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:15:17,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 12:15:17,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-08 12:15:17,813 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 12:15:17,814 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 12:15:17,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 12:15:17,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 12:15:17,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-08 12:15:17,814 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 4 states. [2018-12-08 12:15:17,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 12:15:17,831 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2018-12-08 12:15:17,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 12:15:17,831 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-12-08 12:15:17,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 12:15:17,831 INFO L225 Difference]: With dead ends: 46 [2018-12-08 12:15:17,831 INFO L226 Difference]: Without dead ends: 46 [2018-12-08 12:15:17,832 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-08 12:15:17,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-12-08 12:15:17,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2018-12-08 12:15:17,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-08 12:15:17,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2018-12-08 12:15:17,834 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 18 [2018-12-08 12:15:17,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 12:15:17,834 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2018-12-08 12:15:17,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 12:15:17,834 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2018-12-08 12:15:17,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-08 12:15:17,835 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 12:15:17,835 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 12:15:17,835 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2018-12-08 12:15:17,835 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 12:15:17,835 INFO L82 PathProgramCache]: Analyzing trace with hash 2000444524, now seen corresponding path program 1 times [2018-12-08 12:15:17,835 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 12:15:17,835 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 12:15:17,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:15:17,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 12:15:17,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:15:17,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 12:15:17,942 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 12:15:17,942 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 12:15:17,942 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2886e9f0-8613-4364-9153-c495e663f89e/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 12:15:17,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 12:15:17,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 12:15:17,956 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 12:15:17,981 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-08 12:15:18,006 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-08 12:15:18,006 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2018-12-08 12:15:18,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-08 12:15:18,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-08 12:15:18,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-12-08 12:15:18,006 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 11 states. [2018-12-08 12:15:18,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 12:15:18,156 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2018-12-08 12:15:18,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-08 12:15:18,156 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2018-12-08 12:15:18,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 12:15:18,157 INFO L225 Difference]: With dead ends: 56 [2018-12-08 12:15:18,157 INFO L226 Difference]: Without dead ends: 56 [2018-12-08 12:15:18,157 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2018-12-08 12:15:18,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-12-08 12:15:18,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2018-12-08 12:15:18,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-12-08 12:15:18,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2018-12-08 12:15:18,160 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 21 [2018-12-08 12:15:18,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 12:15:18,161 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2018-12-08 12:15:18,161 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-08 12:15:18,161 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2018-12-08 12:15:18,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-08 12:15:18,161 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 12:15:18,162 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 12:15:18,162 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2018-12-08 12:15:18,162 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 12:15:18,162 INFO L82 PathProgramCache]: Analyzing trace with hash 720580846, now seen corresponding path program 1 times [2018-12-08 12:15:18,162 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 12:15:18,162 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 12:15:18,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:15:18,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 12:15:18,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:15:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 12:15:18,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 12:15:18,214 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 12:15:18,214 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2886e9f0-8613-4364-9153-c495e663f89e/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 12:15:18,219 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 12:15:18,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 12:15:18,227 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 12:15:18,264 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 12:15:18,278 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 12:15:18,278 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2018-12-08 12:15:18,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-08 12:15:18,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-08 12:15:18,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2018-12-08 12:15:18,279 INFO L87 Difference]: Start difference. First operand 53 states and 60 transitions. Second operand 13 states. [2018-12-08 12:15:18,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 12:15:18,462 INFO L93 Difference]: Finished difference Result 74 states and 84 transitions. [2018-12-08 12:15:18,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-12-08 12:15:18,462 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 21 [2018-12-08 12:15:18,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 12:15:18,463 INFO L225 Difference]: With dead ends: 74 [2018-12-08 12:15:18,463 INFO L226 Difference]: Without dead ends: 74 [2018-12-08 12:15:18,463 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=178, Invalid=634, Unknown=0, NotChecked=0, Total=812 [2018-12-08 12:15:18,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-12-08 12:15:18,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 48. [2018-12-08 12:15:18,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-12-08 12:15:18,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2018-12-08 12:15:18,466 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 21 [2018-12-08 12:15:18,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 12:15:18,466 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2018-12-08 12:15:18,466 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-08 12:15:18,466 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2018-12-08 12:15:18,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-08 12:15:18,467 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 12:15:18,467 INFO L402 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] [2018-12-08 12:15:18,467 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, mainErr2REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION]=== [2018-12-08 12:15:18,467 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 12:15:18,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1884236905, now seen corresponding path program 1 times [2018-12-08 12:15:18,467 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 12:15:18,467 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 12:15:18,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:15:18,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 12:15:18,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:15:18,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 12:15:18,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-08 12:15:18,492 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 12:15:18,492 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-08 12:15:18,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 12:15:18,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 12:15:18,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 12:15:18,492 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 4 states. [2018-12-08 12:15:18,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 12:15:18,510 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2018-12-08 12:15:18,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 12:15:18,511 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-12-08 12:15:18,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 12:15:18,511 INFO L225 Difference]: With dead ends: 47 [2018-12-08 12:15:18,511 INFO L226 Difference]: Without dead ends: 0 [2018-12-08 12:15:18,511 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 12:15:18,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-08 12:15:18,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-08 12:15:18,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-08 12:15:18,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-08 12:15:18,512 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2018-12-08 12:15:18,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 12:15:18,512 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 12:15:18,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 12:15:18,512 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-08 12:15:18,512 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-08 12:15:18,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 12:15:18 BoogieIcfgContainer [2018-12-08 12:15:18,515 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 12:15:18,515 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 12:15:18,515 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 12:15:18,515 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 12:15:18,516 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 12:15:16" (3/4) ... [2018-12-08 12:15:18,518 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-08 12:15:18,521 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-08 12:15:18,522 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2018-12-08 12:15:18,522 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2018-12-08 12:15:18,522 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-08 12:15:18,524 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2018-12-08 12:15:18,524 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-12-08 12:15:18,524 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-08 12:15:18,524 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-08 12:15:18,549 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_2886e9f0-8613-4364-9153-c495e663f89e/bin-2019/uautomizer/witness.graphml [2018-12-08 12:15:18,549 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 12:15:18,550 INFO L168 Benchmark]: Toolchain (without parser) took 2333.95 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 94.9 MB). Free memory was 949.5 MB in the beginning and 939.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 105.0 MB. Max. memory is 11.5 GB. [2018-12-08 12:15:18,551 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 12:15:18,551 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.84 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 94.9 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -134.9 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. [2018-12-08 12:15:18,551 INFO L168 Benchmark]: Boogie Preprocessor took 30.93 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 11.5 GB. [2018-12-08 12:15:18,551 INFO L168 Benchmark]: RCFGBuilder took 227.21 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 41.2 MB). Peak memory consumption was 41.2 MB. Max. memory is 11.5 GB. [2018-12-08 12:15:18,552 INFO L168 Benchmark]: TraceAbstraction took 1778.99 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 942.8 MB in the end (delta: 96.7 MB). Peak memory consumption was 96.7 MB. Max. memory is 11.5 GB. [2018-12-08 12:15:18,552 INFO L168 Benchmark]: Witness Printer took 34.32 ms. Allocated memory is still 1.1 GB. Free memory was 942.8 MB in the beginning and 939.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-12-08 12:15:18,553 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 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 259.84 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 94.9 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -134.9 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.93 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 227.21 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 41.2 MB). Peak memory consumption was 41.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1778.99 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 942.8 MB in the end (delta: 96.7 MB). Peak memory consumption was 96.7 MB. Max. memory is 11.5 GB. * Witness Printer took 34.32 ms. Allocated memory is still 1.1 GB. Free memory was 942.8 MB in the beginning and 939.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 552]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 556]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 552]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 540]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 555]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 556]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 555]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 556]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 556]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 42 locations, 9 error locations. SAFE Result, 1.7s OverallTime, 10 OverallIterations, 2 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 221 SDtfs, 827 SDslu, 477 SDs, 0 SdLazy, 596 SolverSat, 74 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 173 GetRequests, 90 SyntacticMatches, 4 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=8, 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, 10 MinimizatonAttempts, 107 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 256 NumberOfCodeBlocks, 256 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 241 ConstructedInterpolants, 2 QuantifiedInterpolants, 22019 SizeOfPredicates, 12 NumberOfNonLiveVariables, 366 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 15 InterpolantComputations, 7 PerfectInterpolantSequences, 18/29 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...