./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/strreplace-alloca_true-valid-memsafety_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_34f7b1ce-ff7f-4d27-bbbd-723a34fe8cdc/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_34f7b1ce-ff7f-4d27-bbbd-723a34fe8cdc/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_34f7b1ce-ff7f-4d27-bbbd-723a34fe8cdc/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_34f7b1ce-ff7f-4d27-bbbd-723a34fe8cdc/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/strreplace-alloca_true-valid-memsafety_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_34f7b1ce-ff7f-4d27-bbbd-723a34fe8cdc/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_34f7b1ce-ff7f-4d27-bbbd-723a34fe8cdc/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 04214bcb8e1f50bae63b15c1fa309fb3edc667ba .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0cd3be1 [2018-11-28 10:47:17,258 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 10:47:17,259 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 10:47:17,267 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 10:47:17,268 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 10:47:17,268 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 10:47:17,269 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 10:47:17,270 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 10:47:17,271 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 10:47:17,272 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 10:47:17,273 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 10:47:17,273 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 10:47:17,274 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 10:47:17,274 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 10:47:17,275 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 10:47:17,276 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 10:47:17,276 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 10:47:17,278 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 10:47:17,279 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 10:47:17,280 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 10:47:17,281 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 10:47:17,282 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 10:47:17,283 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 10:47:17,284 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 10:47:17,284 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 10:47:17,284 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 10:47:17,285 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 10:47:17,286 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 10:47:17,286 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 10:47:17,287 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 10:47:17,287 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 10:47:17,288 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 10:47:17,288 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 10:47:17,288 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 10:47:17,289 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 10:47:17,289 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 10:47:17,289 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_34f7b1ce-ff7f-4d27-bbbd-723a34fe8cdc/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-11-28 10:47:17,299 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 10:47:17,299 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 10:47:17,300 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 10:47:17,300 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 10:47:17,301 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 10:47:17,301 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 10:47:17,301 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 10:47:17,301 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 10:47:17,301 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 10:47:17,301 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 10:47:17,302 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 10:47:17,302 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 10:47:17,302 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 10:47:17,302 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-28 10:47:17,302 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-28 10:47:17,302 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-28 10:47:17,302 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 10:47:17,302 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 10:47:17,303 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 10:47:17,303 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 10:47:17,303 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 10:47:17,303 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 10:47:17,303 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 10:47:17,303 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 10:47:17,303 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 10:47:17,304 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 10:47:17,304 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 10:47:17,304 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 10:47:17,304 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_34f7b1ce-ff7f-4d27-bbbd-723a34fe8cdc/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 -> 04214bcb8e1f50bae63b15c1fa309fb3edc667ba [2018-11-28 10:47:17,327 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 10:47:17,336 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 10:47:17,338 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 10:47:17,339 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 10:47:17,340 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 10:47:17,340 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_34f7b1ce-ff7f-4d27-bbbd-723a34fe8cdc/bin-2019/uautomizer/../../sv-benchmarks/c/array-memsafety/strreplace-alloca_true-valid-memsafety_true-termination.i [2018-11-28 10:47:17,382 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_34f7b1ce-ff7f-4d27-bbbd-723a34fe8cdc/bin-2019/uautomizer/data/36f60d865/f3274a5a2811400b94092bbcaafbf279/FLAG3e59f9c00 [2018-11-28 10:47:17,757 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 10:47:17,758 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_34f7b1ce-ff7f-4d27-bbbd-723a34fe8cdc/sv-benchmarks/c/array-memsafety/strreplace-alloca_true-valid-memsafety_true-termination.i [2018-11-28 10:47:17,766 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_34f7b1ce-ff7f-4d27-bbbd-723a34fe8cdc/bin-2019/uautomizer/data/36f60d865/f3274a5a2811400b94092bbcaafbf279/FLAG3e59f9c00 [2018-11-28 10:47:18,144 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_34f7b1ce-ff7f-4d27-bbbd-723a34fe8cdc/bin-2019/uautomizer/data/36f60d865/f3274a5a2811400b94092bbcaafbf279 [2018-11-28 10:47:18,147 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 10:47:18,148 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-28 10:47:18,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 10:47:18,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 10:47:18,151 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 10:47:18,152 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:47:18" (1/1) ... [2018-11-28 10:47:18,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59b6a12e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:47:18, skipping insertion in model container [2018-11-28 10:47:18,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:47:18" (1/1) ... [2018-11-28 10:47:18,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 10:47:18,183 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 10:47:18,375 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 10:47:18,381 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 10:47:18,454 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 10:47:18,483 INFO L195 MainTranslator]: Completed translation [2018-11-28 10:47:18,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:47:18 WrapperNode [2018-11-28 10:47:18,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 10:47:18,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 10:47:18,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 10:47:18,484 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 10:47:18,492 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:47:18" (1/1) ... [2018-11-28 10:47:18,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:47:18" (1/1) ... [2018-11-28 10:47:18,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:47:18" (1/1) ... [2018-11-28 10:47:18,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:47:18" (1/1) ... [2018-11-28 10:47:18,511 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:47:18" (1/1) ... [2018-11-28 10:47:18,515 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:47:18" (1/1) ... [2018-11-28 10:47:18,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:47:18" (1/1) ... [2018-11-28 10:47:18,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 10:47:18,520 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 10:47:18,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 10:47:18,521 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 10:47:18,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:47:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_34f7b1ce-ff7f-4d27-bbbd-723a34fe8cdc/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 [2018-11-28 10:47:18,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 10:47:18,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 10:47:18,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2018-11-28 10:47:18,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2018-11-28 10:47:18,558 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrreplace [2018-11-28 10:47:18,558 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 10:47:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2018-11-28 10:47:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2018-11-28 10:47:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-28 10:47:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-28 10:47:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-28 10:47:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-28 10:47:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-28 10:47:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-28 10:47:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-28 10:47:18,559 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-28 10:47:18,559 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-28 10:47:18,559 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-28 10:47:18,559 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-28 10:47:18,559 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-28 10:47:18,559 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-28 10:47:18,559 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-28 10:47:18,559 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-28 10:47:18,560 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-28 10:47:18,560 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-28 10:47:18,560 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-28 10:47:18,560 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-28 10:47:18,560 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-28 10:47:18,560 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-28 10:47:18,560 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-28 10:47:18,560 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-28 10:47:18,560 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-28 10:47:18,561 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-28 10:47:18,561 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-28 10:47:18,561 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-28 10:47:18,561 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-28 10:47:18,561 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-28 10:47:18,561 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-28 10:47:18,561 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-28 10:47:18,561 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-28 10:47:18,561 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-28 10:47:18,562 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-28 10:47:18,562 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-28 10:47:18,562 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-28 10:47:18,562 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-28 10:47:18,562 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-28 10:47:18,562 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-28 10:47:18,562 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-28 10:47:18,562 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-28 10:47:18,562 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-28 10:47:18,563 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-28 10:47:18,563 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-28 10:47:18,563 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-28 10:47:18,563 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-28 10:47:18,563 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-28 10:47:18,563 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-28 10:47:18,563 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-28 10:47:18,563 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-28 10:47:18,563 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-28 10:47:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-28 10:47:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-28 10:47:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-28 10:47:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-28 10:47:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-28 10:47:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-28 10:47:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-28 10:47:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-28 10:47:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-28 10:47:18,564 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-28 10:47:18,565 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-28 10:47:18,565 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-28 10:47:18,565 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-28 10:47:18,565 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-28 10:47:18,565 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-28 10:47:18,565 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-28 10:47:18,565 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-28 10:47:18,565 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-28 10:47:18,565 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-28 10:47:18,566 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-28 10:47:18,566 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-28 10:47:18,566 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-28 10:47:18,566 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-28 10:47:18,566 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-28 10:47:18,566 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-28 10:47:18,566 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-28 10:47:18,566 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-28 10:47:18,566 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-28 10:47:18,566 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-28 10:47:18,566 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-28 10:47:18,566 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-28 10:47:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-28 10:47:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-28 10:47:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-28 10:47:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-28 10:47:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-28 10:47:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-28 10:47:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-28 10:47:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-28 10:47:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-28 10:47:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-28 10:47:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-28 10:47:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-28 10:47:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-28 10:47:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-28 10:47:18,568 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-28 10:47:18,568 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-28 10:47:18,568 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-28 10:47:18,568 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-28 10:47:18,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-28 10:47:18,568 INFO L130 BoogieDeclarations]: Found specification of procedure cstrreplace [2018-11-28 10:47:18,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 10:47:18,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 10:47:18,568 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 10:47:18,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 10:47:18,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 10:47:18,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 10:47:18,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 10:47:18,809 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 10:47:18,809 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-28 10:47:18,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:47:18 BoogieIcfgContainer [2018-11-28 10:47:18,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 10:47:18,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 10:47:18,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 10:47:18,813 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 10:47:18,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 10:47:18" (1/3) ... [2018-11-28 10:47:18,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272f9223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 10:47:18, skipping insertion in model container [2018-11-28 10:47:18,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:47:18" (2/3) ... [2018-11-28 10:47:18,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272f9223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 10:47:18, skipping insertion in model container [2018-11-28 10:47:18,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:47:18" (3/3) ... [2018-11-28 10:47:18,817 INFO L112 eAbstractionObserver]: Analyzing ICFG strreplace-alloca_true-valid-memsafety_true-termination.i [2018-11-28 10:47:18,825 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 10:47:18,831 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2018-11-28 10:47:18,842 INFO L257 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2018-11-28 10:47:18,857 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 10:47:18,858 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 10:47:18,858 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-28 10:47:18,858 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 10:47:18,858 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 10:47:18,858 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 10:47:18,858 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 10:47:18,858 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 10:47:18,859 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 10:47:18,871 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2018-11-28 10:47:18,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-28 10:47:18,877 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:47:18,878 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:47:18,879 INFO L423 AbstractCegarLoop]: === Iteration 1 === [cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 10:47:18,882 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:47:18,883 INFO L82 PathProgramCache]: Analyzing trace with hash -129737215, now seen corresponding path program 1 times [2018-11-28 10:47:18,884 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:47:18,885 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:47:18,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:47:18,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:47:18,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:47:18,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:47:18,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:47:18,994 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 10:47:18,994 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 10:47:18,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 10:47:19,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 10:47:19,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 10:47:19,006 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2018-11-28 10:47:19,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:47:19,041 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2018-11-28 10:47:19,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 10:47:19,042 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-11-28 10:47:19,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:47:19,048 INFO L225 Difference]: With dead ends: 35 [2018-11-28 10:47:19,048 INFO L226 Difference]: Without dead ends: 32 [2018-11-28 10:47:19,049 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 [2018-11-28 10:47:19,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-28 10:47:19,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-11-28 10:47:19,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-28 10:47:19,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2018-11-28 10:47:19,070 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 9 [2018-11-28 10:47:19,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:47:19,070 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2018-11-28 10:47:19,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 10:47:19,070 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2018-11-28 10:47:19,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-28 10:47:19,071 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:47:19,071 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:47:19,071 INFO L423 AbstractCegarLoop]: === Iteration 2 === [cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 10:47:19,071 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:47:19,071 INFO L82 PathProgramCache]: Analyzing trace with hash -129737214, now seen corresponding path program 1 times [2018-11-28 10:47:19,071 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:47:19,071 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:47:19,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:47:19,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:47:19,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:47:19,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:47:19,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:47:19,120 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 10:47:19,120 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 10:47:19,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 10:47:19,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 10:47:19,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 10:47:19,121 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 4 states. [2018-11-28 10:47:19,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:47:19,145 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2018-11-28 10:47:19,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 10:47:19,145 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-11-28 10:47:19,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:47:19,146 INFO L225 Difference]: With dead ends: 31 [2018-11-28 10:47:19,146 INFO L226 Difference]: Without dead ends: 31 [2018-11-28 10:47:19,147 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 10:47:19,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-28 10:47:19,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-11-28 10:47:19,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-28 10:47:19,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2018-11-28 10:47:19,151 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 9 [2018-11-28 10:47:19,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:47:19,151 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2018-11-28 10:47:19,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 10:47:19,151 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2018-11-28 10:47:19,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-28 10:47:19,151 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:47:19,151 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:47:19,152 INFO L423 AbstractCegarLoop]: === Iteration 3 === [cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 10:47:19,152 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:47:19,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1659701328, now seen corresponding path program 1 times [2018-11-28 10:47:19,152 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:47:19,152 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:47:19,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:47:19,153 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:47:19,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:47:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:47:19,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:47:19,210 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 10:47:19,210 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 10:47:19,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 10:47:19,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 10:47:19,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 10:47:19,211 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 5 states. [2018-11-28 10:47:19,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:47:19,292 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2018-11-28 10:47:19,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 10:47:19,292 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-11-28 10:47:19,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:47:19,293 INFO L225 Difference]: With dead ends: 28 [2018-11-28 10:47:19,293 INFO L226 Difference]: Without dead ends: 28 [2018-11-28 10:47:19,293 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 10:47:19,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-11-28 10:47:19,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-11-28 10:47:19,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-28 10:47:19,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2018-11-28 10:47:19,296 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 13 [2018-11-28 10:47:19,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:47:19,296 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2018-11-28 10:47:19,298 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 10:47:19,299 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2018-11-28 10:47:19,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-28 10:47:19,299 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:47:19,299 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:47:19,299 INFO L423 AbstractCegarLoop]: === Iteration 4 === [cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 10:47:19,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:47:19,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1659701329, now seen corresponding path program 1 times [2018-11-28 10:47:19,300 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:47:19,300 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:47:19,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:47:19,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:47:19,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:47:19,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:47:19,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:47:19,378 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 10:47:19,378 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-28 10:47:19,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 10:47:19,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 10:47:19,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-28 10:47:19,379 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 7 states. [2018-11-28 10:47:19,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:47:19,474 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2018-11-28 10:47:19,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 10:47:19,475 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2018-11-28 10:47:19,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:47:19,477 INFO L225 Difference]: With dead ends: 38 [2018-11-28 10:47:19,477 INFO L226 Difference]: Without dead ends: 38 [2018-11-28 10:47:19,478 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-28 10:47:19,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-28 10:47:19,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 33. [2018-11-28 10:47:19,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-28 10:47:19,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-11-28 10:47:19,483 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 13 [2018-11-28 10:47:19,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:47:19,484 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-11-28 10:47:19,484 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 10:47:19,484 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-11-28 10:47:19,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-28 10:47:19,484 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:47:19,485 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:47:19,485 INFO L423 AbstractCegarLoop]: === Iteration 5 === [cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 10:47:19,485 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:47:19,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1732867125, now seen corresponding path program 1 times [2018-11-28 10:47:19,485 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:47:19,485 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:47:19,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:47:19,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:47:19,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:47:19,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:47:19,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:47:19,618 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 10:47:19,618 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-28 10:47:19,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 10:47:19,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 10:47:19,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-11-28 10:47:19,619 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 8 states. [2018-11-28 10:47:19,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:47:19,696 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2018-11-28 10:47:19,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 10:47:19,696 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-11-28 10:47:19,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:47:19,697 INFO L225 Difference]: With dead ends: 46 [2018-11-28 10:47:19,698 INFO L226 Difference]: Without dead ends: 46 [2018-11-28 10:47:19,698 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-11-28 10:47:19,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-11-28 10:47:19,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2018-11-28 10:47:19,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-28 10:47:19,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2018-11-28 10:47:19,703 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 18 [2018-11-28 10:47:19,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:47:19,703 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2018-11-28 10:47:19,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 10:47:19,703 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2018-11-28 10:47:19,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-28 10:47:19,704 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:47:19,704 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:47:19,704 INFO L423 AbstractCegarLoop]: === Iteration 6 === [cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 10:47:19,704 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:47:19,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1474701687, now seen corresponding path program 1 times [2018-11-28 10:47:19,704 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:47:19,704 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:47:19,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:47:19,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:47:19,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:47:19,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:47:19,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:47:19,901 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 10:47:19,901 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_34f7b1ce-ff7f-4d27-bbbd-723a34fe8cdc/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 [2018-11-28 10:47:19,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:47:19,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:47:19,935 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:47:19,973 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-11-28 10:47:19,976 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 11 treesize of output 10 [2018-11-28 10:47:19,976 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 10:47:19,978 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 10:47:19,984 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-28 10:47:19,984 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2018-11-28 10:47:20,080 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2018-11-28 10:47:20,099 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 11 [2018-11-28 10:47:20,099 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-11-28 10:47:20,104 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-28 10:47:20,117 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-28 10:47:20,117 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:33 [2018-11-28 10:47:20,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:47:20,212 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 10:47:20,213 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2018-11-28 10:47:20,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-28 10:47:20,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-28 10:47:20,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2018-11-28 10:47:20,214 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 15 states. [2018-11-28 10:47:23,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:47:23,474 INFO L93 Difference]: Finished difference Result 95 states and 106 transitions. [2018-11-28 10:47:23,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-28 10:47:23,477 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18 [2018-11-28 10:47:23,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:47:23,478 INFO L225 Difference]: With dead ends: 95 [2018-11-28 10:47:23,478 INFO L226 Difference]: Without dead ends: 95 [2018-11-28 10:47:23,478 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2018-11-28 10:47:23,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-11-28 10:47:23,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 50. [2018-11-28 10:47:23,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-11-28 10:47:23,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2018-11-28 10:47:23,487 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 18 [2018-11-28 10:47:23,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:47:23,488 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2018-11-28 10:47:23,488 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-28 10:47:23,488 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2018-11-28 10:47:23,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 10:47:23,489 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:47:23,489 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:47:23,489 INFO L423 AbstractCegarLoop]: === Iteration 7 === [cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 10:47:23,489 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:47:23,490 INFO L82 PathProgramCache]: Analyzing trace with hash 2074353322, now seen corresponding path program 1 times [2018-11-28 10:47:23,490 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:47:23,490 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:47:23,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:47:23,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:47:23,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:47:23,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:47:23,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:47:23,553 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 10:47:23,553 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 10:47:23,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 10:47:23,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 10:47:23,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 10:47:23,553 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand 4 states. [2018-11-28 10:47:23,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:47:23,592 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2018-11-28 10:47:23,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 10:47:23,593 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2018-11-28 10:47:23,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:47:23,593 INFO L225 Difference]: With dead ends: 49 [2018-11-28 10:47:23,593 INFO L226 Difference]: Without dead ends: 34 [2018-11-28 10:47:23,594 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 [2018-11-28 10:47:23,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-28 10:47:23,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-11-28 10:47:23,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-28 10:47:23,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2018-11-28 10:47:23,597 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 19 [2018-11-28 10:47:23,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:47:23,597 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2018-11-28 10:47:23,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 10:47:23,597 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2018-11-28 10:47:23,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-28 10:47:23,598 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:47:23,598 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:47:23,598 INFO L423 AbstractCegarLoop]: === Iteration 8 === [cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 10:47:23,598 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:47:23,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1796611949, now seen corresponding path program 2 times [2018-11-28 10:47:23,599 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:47:23,599 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:47:23,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:47:23,600 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:47:23,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:47:23,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:47:23,814 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:47:23,814 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 10:47:23,814 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_34f7b1ce-ff7f-4d27-bbbd-723a34fe8cdc/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 [2018-11-28 10:47:23,822 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 10:47:23,838 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 10:47:23,838 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 10:47:23,840 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:47:23,845 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 6 treesize of output 5 [2018-11-28 10:47:23,846 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 10:47:23,848 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 10:47:23,849 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-28 10:47:23,865 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2018-11-28 10:47:23,867 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 13 treesize of output 12 [2018-11-28 10:47:23,867 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 10:47:23,868 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 10:47:23,875 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-28 10:47:23,875 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2018-11-28 10:47:23,965 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-11-28 10:47:23,979 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 13 [2018-11-28 10:47:23,980 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-11-28 10:47:23,983 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-28 10:47:23,992 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-28 10:47:23,992 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:38, output treesize:49 [2018-11-28 10:47:24,021 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:47:24,036 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 10:47:24,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2018-11-28 10:47:24,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-28 10:47:24,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-28 10:47:24,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2018-11-28 10:47:24,037 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 16 states. [2018-11-28 10:47:24,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:47:24,536 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2018-11-28 10:47:24,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-28 10:47:24,537 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 23 [2018-11-28 10:47:24,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:47:24,537 INFO L225 Difference]: With dead ends: 67 [2018-11-28 10:47:24,538 INFO L226 Difference]: Without dead ends: 52 [2018-11-28 10:47:24,538 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=160, Invalid=710, Unknown=0, NotChecked=0, Total=870 [2018-11-28 10:47:24,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-11-28 10:47:24,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 41. [2018-11-28 10:47:24,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-28 10:47:24,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2018-11-28 10:47:24,540 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 23 [2018-11-28 10:47:24,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:47:24,541 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2018-11-28 10:47:24,541 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-28 10:47:24,541 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2018-11-28 10:47:24,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-28 10:47:24,541 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 10:47:24,541 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 10:47:24,542 INFO L423 AbstractCegarLoop]: === Iteration 9 === [cstrreplaceErr0REQUIRES_VIOLATION, cstrreplaceErr1REQUIRES_VIOLATION, cstrreplaceErr2REQUIRES_VIOLATION, cstrreplaceErr3REQUIRES_VIOLATION, cstrreplaceErr4REQUIRES_VIOLATION, cstrreplaceErr5REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-11-28 10:47:24,542 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:47:24,542 INFO L82 PathProgramCache]: Analyzing trace with hash -909279002, now seen corresponding path program 1 times [2018-11-28 10:47:24,542 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:47:24,542 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:47:24,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:47:24,543 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 10:47:24,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:47:24,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:47:24,698 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:47:24,698 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 10:47:24,698 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_34f7b1ce-ff7f-4d27-bbbd-723a34fe8cdc/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 [2018-11-28 10:47:24,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:47:24,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:47:24,728 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:47:24,733 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 6 treesize of output 5 [2018-11-28 10:47:24,734 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-28 10:47:24,774 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 10:47:24,774 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-28 10:47:24,780 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 12 [2018-11-28 10:47:24,782 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 12 treesize of output 11 [2018-11-28 10:47:24,782 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-28 10:47:24,785 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-28 10:47:24,787 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-28 10:47:24,787 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2018-11-28 10:47:24,842 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2018-11-28 10:47:24,855 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 27 [2018-11-28 10:47:24,856 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-11-28 10:47:24,866 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-28 10:47:24,875 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-28 10:47:24,875 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:27 [2018-11-28 10:47:24,926 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2018-11-28 10:47:24,931 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 12 [2018-11-28 10:47:24,931 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-11-28 10:47:24,935 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-28 10:47:24,952 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-28 10:47:24,952 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:57, output treesize:34 [2018-11-28 10:47:24,999 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:47:25,014 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 10:47:25,014 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 19 [2018-11-28 10:47:25,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-28 10:47:25,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-28 10:47:25,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2018-11-28 10:47:25,015 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 20 states. [2018-11-28 10:47:25,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:47:25,349 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2018-11-28 10:47:25,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-28 10:47:25,349 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 30 [2018-11-28 10:47:25,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 10:47:25,349 INFO L225 Difference]: With dead ends: 40 [2018-11-28 10:47:25,349 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 10:47:25,350 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=270, Invalid=786, Unknown=0, NotChecked=0, Total=1056 [2018-11-28 10:47:25,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 10:47:25,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 10:47:25,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 10:47:25,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 10:47:25,350 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2018-11-28 10:47:25,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 10:47:25,351 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 10:47:25,351 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-28 10:47:25,351 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 10:47:25,351 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 10:47:25,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 10:47:25 BoogieIcfgContainer [2018-11-28 10:47:25,354 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 10:47:25,354 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 10:47:25,355 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 10:47:25,355 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 10:47:25,355 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:47:18" (3/4) ... [2018-11-28 10:47:25,358 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 10:47:25,362 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 10:47:25,362 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cstrreplace [2018-11-28 10:47:25,362 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2018-11-28 10:47:25,363 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2018-11-28 10:47:25,363 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 10:47:25,366 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2018-11-28 10:47:25,366 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-11-28 10:47:25,366 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 10:47:25,399 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_34f7b1ce-ff7f-4d27-bbbd-723a34fe8cdc/bin-2019/uautomizer/witness.graphml [2018-11-28 10:47:25,399 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 10:47:25,400 INFO L168 Benchmark]: Toolchain (without parser) took 7252.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 215.0 MB). Free memory was 956.0 MB in the beginning and 835.8 MB in the end (delta: 120.2 MB). Peak memory consumption was 335.1 MB. Max. memory is 11.5 GB. [2018-11-28 10:47:25,401 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 10:47:25,402 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 956.0 MB in the beginning and 1.1 GB in the end (delta: -189.1 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2018-11-28 10:47:25,402 INFO L168 Benchmark]: Boogie Preprocessor took 36.44 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: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. [2018-11-28 10:47:25,402 INFO L168 Benchmark]: RCFGBuilder took 289.35 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: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 11.5 GB. [2018-11-28 10:47:25,403 INFO L168 Benchmark]: TraceAbstraction took 6543.75 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 58.7 MB). Free memory was 1.1 GB in the beginning and 840.8 MB in the end (delta: 261.4 MB). Peak memory consumption was 320.1 MB. Max. memory is 11.5 GB. [2018-11-28 10:47:25,403 INFO L168 Benchmark]: Witness Printer took 45.15 ms. Allocated memory is still 1.2 GB. Free memory was 840.8 MB in the beginning and 835.8 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 11.5 GB. [2018-11-28 10:47:25,404 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 334.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 956.0 MB in the beginning and 1.1 GB in the end (delta: -189.1 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 36.44 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: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. * RCFGBuilder took 289.35 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: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6543.75 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 58.7 MB). Free memory was 1.1 GB in the beginning and 840.8 MB in the end (delta: 261.4 MB). Peak memory consumption was 320.1 MB. Max. memory is 11.5 GB. * Witness Printer took 45.15 ms. Allocated memory is still 1.2 GB. Free memory was 840.8 MB in the beginning and 835.8 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 544]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 544]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 545]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 545]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 546]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 546]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 559]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 559]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 553]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 9 error locations. SAFE Result, 6.5s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 4.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 214 SDtfs, 392 SDslu, 730 SDs, 0 SdLazy, 709 SolverSat, 145 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 3.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 169 GetRequests, 59 SyntacticMatches, 5 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred 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, 9 MinimizatonAttempts, 64 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 223 NumberOfCodeBlocks, 223 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 211 ConstructedInterpolants, 11 QuantifiedInterpolants, 45649 SizeOfPredicates, 25 NumberOfNonLiveVariables, 347 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 8/53 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...