./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cmemchr-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cmemchr-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 007fc8a389a67fb47c7d326d3f1d284696dfe5de13661e77d6d1bf7cce285194 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:06:50,023 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:06:50,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:06:50,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:06:50,088 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:06:50,095 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:06:50,097 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:06:50,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:06:50,105 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:06:50,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:06:50,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:06:50,117 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:06:50,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:06:50,120 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:06:50,123 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:06:50,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:06:50,134 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:06:50,135 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:06:50,138 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:06:50,145 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:06:50,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:06:50,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:06:50,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:06:50,155 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:06:50,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:06:50,162 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:06:50,163 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:06:50,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:06:50,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:06:50,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:06:50,168 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:06:50,169 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:06:50,171 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:06:50,173 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:06:50,174 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:06:50,175 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:06:50,176 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:06:50,176 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:06:50,176 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:06:50,177 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:06:50,178 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:06:50,179 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-11-23 13:06:50,235 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:06:50,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:06:50,236 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:06:50,236 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:06:50,238 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:06:50,238 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:06:50,239 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:06:50,239 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-23 13:06:50,239 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-23 13:06:50,239 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-23 13:06:50,241 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-23 13:06:50,241 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-23 13:06:50,241 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-23 13:06:50,241 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:06:50,242 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:06:50,242 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 13:06:50,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:06:50,242 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:06:50,243 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:06:50,243 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-23 13:06:50,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-23 13:06:50,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-23 13:06:50,244 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:06:50,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:06:50,244 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-23 13:06:50,244 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:06:50,246 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-23 13:06:50,246 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:06:50,247 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:06:50,247 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:06:50,247 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:06:50,247 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:06:50,249 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-23 13:06:50,249 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 007fc8a389a67fb47c7d326d3f1d284696dfe5de13661e77d6d1bf7cce285194 [2021-11-23 13:06:50,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:06:50,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:06:50,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:06:50,586 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:06:50,587 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:06:50,589 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/array-memsafety/openbsd_cmemchr-alloca-2.i [2021-11-23 13:06:50,664 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G/data/0ba5e7882/f79b0b6a7b5245458866fd3fa8f52d6c/FLAGf6098f8da [2021-11-23 13:06:51,332 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:06:51,332 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/sv-benchmarks/c/array-memsafety/openbsd_cmemchr-alloca-2.i [2021-11-23 13:06:51,369 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G/data/0ba5e7882/f79b0b6a7b5245458866fd3fa8f52d6c/FLAGf6098f8da [2021-11-23 13:06:51,613 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G/data/0ba5e7882/f79b0b6a7b5245458866fd3fa8f52d6c [2021-11-23 13:06:51,616 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:06:51,618 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:06:51,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:06:51,624 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:06:51,629 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:06:51,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:06:51" (1/1) ... [2021-11-23 13:06:51,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19a4a21e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:51, skipping insertion in model container [2021-11-23 13:06:51,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:06:51" (1/1) ... [2021-11-23 13:06:51,641 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:06:51,694 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:06:52,077 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:06:52,087 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:06:52,135 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:06:52,178 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:06:52,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:52 WrapperNode [2021-11-23 13:06:52,181 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:06:52,183 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:06:52,183 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:06:52,184 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:06:52,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:52" (1/1) ... [2021-11-23 13:06:52,224 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:52" (1/1) ... [2021-11-23 13:06:52,258 INFO L137 Inliner]: procedures = 117, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 60 [2021-11-23 13:06:52,258 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:06:52,259 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:06:52,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:06:52,260 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:06:52,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:52" (1/1) ... [2021-11-23 13:06:52,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:52" (1/1) ... [2021-11-23 13:06:52,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:52" (1/1) ... [2021-11-23 13:06:52,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:52" (1/1) ... [2021-11-23 13:06:52,296 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:52" (1/1) ... [2021-11-23 13:06:52,308 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:52" (1/1) ... [2021-11-23 13:06:52,310 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:52" (1/1) ... [2021-11-23 13:06:52,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:06:52,313 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:06:52,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:06:52,314 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:06:52,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:52" (1/1) ... [2021-11-23 13:06:52,338 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:06:52,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:06:52,363 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:06:52,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-23 13:06:52,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 13:06:52,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 13:06:52,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 13:06:52,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 13:06:52,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:06:52,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:06:52,522 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:06:52,524 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:06:52,651 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:06:52,658 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:06:52,659 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 13:06:52,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:06:52 BoogieIcfgContainer [2021-11-23 13:06:52,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:06:52,662 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-23 13:06:52,662 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-23 13:06:52,666 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-23 13:06:52,667 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-23 13:06:52,668 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 01:06:51" (1/3) ... [2021-11-23 13:06:52,670 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7830bca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 01:06:52, skipping insertion in model container [2021-11-23 13:06:52,670 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-23 13:06:52,670 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:06:52" (2/3) ... [2021-11-23 13:06:52,671 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7830bca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 01:06:52, skipping insertion in model container [2021-11-23 13:06:52,671 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-23 13:06:52,671 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:06:52" (3/3) ... [2021-11-23 13:06:52,673 INFO L388 chiAutomizerObserver]: Analyzing ICFG openbsd_cmemchr-alloca-2.i [2021-11-23 13:06:52,725 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-23 13:06:52,726 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-23 13:06:52,726 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-23 13:06:52,726 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-23 13:06:52,726 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-23 13:06:52,726 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-23 13:06:52,727 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-23 13:06:52,727 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-23 13:06:52,744 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 17 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:52,765 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-11-23 13:06:52,766 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:06:52,766 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:06:52,773 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-11-23 13:06:52,773 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-23 13:06:52,773 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-23 13:06:52,774 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 17 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:52,777 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-11-23 13:06:52,777 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:06:52,777 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:06:52,778 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-11-23 13:06:52,778 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-23 13:06:52,785 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~malloc8#1.base, main_#t~malloc8#1.offset, main_#t~nondet10#1, main_#t~post9#1, main_~i~0#1, main_#t~ret11#1.base, main_#t~ret11#1.offset, main_~length~0#1, main_~n~0#1, main_~c~0#1, main_~nondetArea~0#1.base, main_~nondetArea~0#1.offset;main_~length~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~n~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~c~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1; 8#L529true assume !(main_~length~0#1 < 1); 16#L529-2true assume !(main_~n~0#1 < 1); 3#L532-1true call main_#t~malloc8#1.base, main_#t~malloc8#1.offset := #Ultimate.allocOnStack(main_~n~0#1);main_~nondetArea~0#1.base, main_~nondetArea~0#1.offset := main_#t~malloc8#1.base, main_#t~malloc8#1.offset;main_~i~0#1 := 0; 7#L537-3true [2021-11-23 13:06:52,786 INFO L793 eck$LassoCheckResult]: Loop: 7#L537-3true assume !!(main_~i~0#1 < main_~n~0#1);call write~int(main_#t~nondet10#1, main_~nondetArea~0#1.base, main_~nondetArea~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet10#1; 14#L537-2true main_#t~post9#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post9#1;havoc main_#t~post9#1; 7#L537-3true [2021-11-23 13:06:52,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:52,808 INFO L85 PathProgramCache]: Analyzing trace with hash 28695878, now seen corresponding path program 1 times [2021-11-23 13:06:52,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:06:52,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451120714] [2021-11-23 13:06:52,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:52,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:06:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:06:52,947 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:06:52,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:06:52,982 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:06:52,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:52,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1699, now seen corresponding path program 1 times [2021-11-23 13:06:52,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:06:52,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342472947] [2021-11-23 13:06:52,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:52,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:06:53,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:06:53,017 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:06:53,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:06:53,040 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:06:53,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:53,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1806935720, now seen corresponding path program 1 times [2021-11-23 13:06:53,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:06:53,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116000967] [2021-11-23 13:06:53,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:53,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:06:53,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:06:53,099 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:06:53,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:06:53,119 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:06:53,521 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:06:53,522 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:06:53,522 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:06:53,522 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:06:53,523 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 13:06:53,523 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:06:53,524 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:06:53,524 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:06:53,524 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cmemchr-alloca-2.i_Iteration1_Lasso [2021-11-23 13:06:53,524 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:06:53,525 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:06:53,555 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:06:53,672 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:06:53,676 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:06:53,679 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:06:53,681 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:06:53,685 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:06:53,688 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:06:53,690 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:06:53,693 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:06:53,697 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:06:53,700 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:06:53,703 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:06:53,706 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:06:53,709 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:06:53,712 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:06:53,963 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:06:53,968 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 13:06:53,970 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:06:53,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:06:53,976 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:06:53,984 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-23 13:06:53,994 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:06:53,995 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:06:53,995 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:06:53,995 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:06:54,006 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-23 13:06:54,007 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-23 13:06:54,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-23 13:06:54,031 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:06:54,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-11-23 13:06:54,064 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:06:54,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:06:54,066 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:06:54,075 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-23 13:06:54,084 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:06:54,085 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:06:54,085 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:06:54,085 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:06:54,095 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-23 13:06:54,095 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-23 13:06:54,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-23 13:06:54,122 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 13:06:54,145 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2021-11-23 13:06:54,145 INFO L444 ModelExtractionUtils]: 9 out of 22 variables were initially zero. Simplification set additionally 9 variables to zero. [2021-11-23 13:06:54,147 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:06:54,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:06:54,149 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:06:54,151 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 13:06:54,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-23 13:06:54,183 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-11-23 13:06:54,183 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 13:06:54,184 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~nondetArea~0#1.offset, ULTIMATE.start_main_~i~0#1, v_rep(select #length ULTIMATE.start_main_~nondetArea~0#1.base)_1) = -1*ULTIMATE.start_main_~nondetArea~0#1.offset - 1*ULTIMATE.start_main_~i~0#1 + 1*v_rep(select #length ULTIMATE.start_main_~nondetArea~0#1.base)_1 Supporting invariants [] [2021-11-23 13:06:54,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-23 13:06:54,237 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2021-11-23 13:06:54,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:54,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:06:54,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:06:54,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:06:54,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:06:54,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 13:06:54,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:06:54,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:54,391 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-11-23 13:06:54,393 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 18 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 17 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:54,463 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 18 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 17 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 42 states and 59 transitions. Complement of second has 7 states. [2021-11-23 13:06:54,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-11-23 13:06:54,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:54,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 39 transitions. [2021-11-23 13:06:54,479 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 5 letters. Loop has 2 letters. [2021-11-23 13:06:54,480 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:06:54,480 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 7 letters. Loop has 2 letters. [2021-11-23 13:06:54,481 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:06:54,481 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 39 transitions. Stem has 5 letters. Loop has 4 letters. [2021-11-23 13:06:54,482 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:06:54,483 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 59 transitions. [2021-11-23 13:06:54,491 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-23 13:06:54,496 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 14 states and 18 transitions. [2021-11-23 13:06:54,498 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-11-23 13:06:54,498 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2021-11-23 13:06:54,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 18 transitions. [2021-11-23 13:06:54,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 13:06:54,500 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2021-11-23 13:06:54,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 18 transitions. [2021-11-23 13:06:54,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-23 13:06:54,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:54,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2021-11-23 13:06:54,527 INFO L704 BuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2021-11-23 13:06:54,528 INFO L587 BuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2021-11-23 13:06:54,528 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-23 13:06:54,528 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 18 transitions. [2021-11-23 13:06:54,530 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-23 13:06:54,530 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:06:54,530 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:06:54,531 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:06:54,531 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-23 13:06:54,532 INFO L791 eck$LassoCheckResult]: Stem: 122#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 123#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~malloc8#1.base, main_#t~malloc8#1.offset, main_#t~nondet10#1, main_#t~post9#1, main_~i~0#1, main_#t~ret11#1.base, main_#t~ret11#1.offset, main_~length~0#1, main_~n~0#1, main_~c~0#1, main_~nondetArea~0#1.base, main_~nondetArea~0#1.offset;main_~length~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~n~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~c~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1; 128#L529 assume !(main_~length~0#1 < 1); 129#L529-2 assume !(main_~n~0#1 < 1); 120#L532-1 call main_#t~malloc8#1.base, main_#t~malloc8#1.offset := #Ultimate.allocOnStack(main_~n~0#1);main_~nondetArea~0#1.base, main_~nondetArea~0#1.offset := main_#t~malloc8#1.base, main_#t~malloc8#1.offset;main_~i~0#1 := 0; 121#L537-3 assume !(main_~i~0#1 < main_~n~0#1); 124#L537-4 assume { :begin_inline_cmemchr } true;cmemchr_#in~s#1.base, cmemchr_#in~s#1.offset, cmemchr_#in~c#1, cmemchr_#in~n#1 := main_~nondetArea~0#1.base, main_~nondetArea~0#1.offset, main_~c~0#1, main_~n~0#1;havoc cmemchr_#res#1.base, cmemchr_#res#1.offset;havoc cmemchr_#t~post3#1.base, cmemchr_#t~post3#1.offset, cmemchr_#t~mem4#1, cmemchr_#t~pre2#1, cmemchr_~p~0#1.base, cmemchr_~p~0#1.offset, cmemchr_~s#1.base, cmemchr_~s#1.offset, cmemchr_~c#1, cmemchr_~n#1;cmemchr_~s#1.base, cmemchr_~s#1.offset := cmemchr_#in~s#1.base, cmemchr_#in~s#1.offset;cmemchr_~c#1 := cmemchr_#in~c#1;cmemchr_~n#1 := cmemchr_#in~n#1; 125#L516 assume 0 != cmemchr_~n#1 % 4294967296;cmemchr_~p~0#1.base, cmemchr_~p~0#1.offset := cmemchr_~s#1.base, cmemchr_~s#1.offset; 130#L518-4 [2021-11-23 13:06:54,533 INFO L793 eck$LassoCheckResult]: Loop: 130#L518-4 cmemchr_#t~post3#1.base, cmemchr_#t~post3#1.offset := cmemchr_~p~0#1.base, cmemchr_~p~0#1.offset;cmemchr_~p~0#1.base, cmemchr_~p~0#1.offset := cmemchr_#t~post3#1.base, 1 + cmemchr_#t~post3#1.offset;call cmemchr_#t~mem4#1 := read~int(cmemchr_#t~post3#1.base, cmemchr_#t~post3#1.offset, 1); 131#L519 assume !(cmemchr_#t~mem4#1 % 256 == cmemchr_~c#1 % 256);havoc cmemchr_#t~post3#1.base, cmemchr_#t~post3#1.offset;havoc cmemchr_#t~mem4#1; 133#L518-1 cmemchr_#t~pre2#1 := cmemchr_~n#1 - 1;cmemchr_~n#1 := cmemchr_~n#1 - 1; 132#L518-2 assume !!(0 != cmemchr_#t~pre2#1 % 4294967296);havoc cmemchr_#t~pre2#1; 130#L518-4 [2021-11-23 13:06:54,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:54,535 INFO L85 PathProgramCache]: Analyzing trace with hash 180430706, now seen corresponding path program 1 times [2021-11-23 13:06:54,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:06:54,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13867075] [2021-11-23 13:06:54,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:54,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:06:54,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:06:54,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:54,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:06:54,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13867075] [2021-11-23 13:06:54,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13867075] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:06:54,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:06:54,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:06:54,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736814652] [2021-11-23 13:06:54,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:06:54,644 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-23 13:06:54,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:54,644 INFO L85 PathProgramCache]: Analyzing trace with hash 2036779, now seen corresponding path program 1 times [2021-11-23 13:06:54,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:06:54,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096819377] [2021-11-23 13:06:54,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:54,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:06:54,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:06:54,681 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:06:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:06:54,692 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:06:54,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:06:54,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:06:54,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:06:54,821 INFO L87 Difference]: Start difference. First operand 14 states and 18 transitions. cyclomatic complexity: 6 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:54,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:06:54,850 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2021-11-23 13:06:54,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:06:54,851 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 18 transitions. [2021-11-23 13:06:54,853 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-23 13:06:54,854 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 15 states and 18 transitions. [2021-11-23 13:06:54,854 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2021-11-23 13:06:54,855 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2021-11-23 13:06:54,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 18 transitions. [2021-11-23 13:06:54,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 13:06:54,855 INFO L681 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2021-11-23 13:06:54,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 18 transitions. [2021-11-23 13:06:54,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2021-11-23 13:06:54,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:54,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2021-11-23 13:06:54,858 INFO L704 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2021-11-23 13:06:54,858 INFO L587 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2021-11-23 13:06:54,859 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-23 13:06:54,859 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 17 transitions. [2021-11-23 13:06:54,860 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-23 13:06:54,860 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:06:54,860 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:06:54,862 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:06:54,862 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-23 13:06:54,862 INFO L791 eck$LassoCheckResult]: Stem: 158#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 159#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~malloc8#1.base, main_#t~malloc8#1.offset, main_#t~nondet10#1, main_#t~post9#1, main_~i~0#1, main_#t~ret11#1.base, main_#t~ret11#1.offset, main_~length~0#1, main_~n~0#1, main_~c~0#1, main_~nondetArea~0#1.base, main_~nondetArea~0#1.offset;main_~length~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~n~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~c~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1; 164#L529 assume !(main_~length~0#1 < 1); 165#L529-2 assume !(main_~n~0#1 < 1); 156#L532-1 call main_#t~malloc8#1.base, main_#t~malloc8#1.offset := #Ultimate.allocOnStack(main_~n~0#1);main_~nondetArea~0#1.base, main_~nondetArea~0#1.offset := main_#t~malloc8#1.base, main_#t~malloc8#1.offset;main_~i~0#1 := 0; 157#L537-3 assume !!(main_~i~0#1 < main_~n~0#1);call write~int(main_#t~nondet10#1, main_~nondetArea~0#1.base, main_~nondetArea~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet10#1; 162#L537-2 main_#t~post9#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post9#1;havoc main_#t~post9#1; 163#L537-3 assume !(main_~i~0#1 < main_~n~0#1); 160#L537-4 assume { :begin_inline_cmemchr } true;cmemchr_#in~s#1.base, cmemchr_#in~s#1.offset, cmemchr_#in~c#1, cmemchr_#in~n#1 := main_~nondetArea~0#1.base, main_~nondetArea~0#1.offset, main_~c~0#1, main_~n~0#1;havoc cmemchr_#res#1.base, cmemchr_#res#1.offset;havoc cmemchr_#t~post3#1.base, cmemchr_#t~post3#1.offset, cmemchr_#t~mem4#1, cmemchr_#t~pre2#1, cmemchr_~p~0#1.base, cmemchr_~p~0#1.offset, cmemchr_~s#1.base, cmemchr_~s#1.offset, cmemchr_~c#1, cmemchr_~n#1;cmemchr_~s#1.base, cmemchr_~s#1.offset := cmemchr_#in~s#1.base, cmemchr_#in~s#1.offset;cmemchr_~c#1 := cmemchr_#in~c#1;cmemchr_~n#1 := cmemchr_#in~n#1; 161#L516 assume 0 != cmemchr_~n#1 % 4294967296;cmemchr_~p~0#1.base, cmemchr_~p~0#1.offset := cmemchr_~s#1.base, cmemchr_~s#1.offset; 166#L518-4 [2021-11-23 13:06:54,863 INFO L793 eck$LassoCheckResult]: Loop: 166#L518-4 cmemchr_#t~post3#1.base, cmemchr_#t~post3#1.offset := cmemchr_~p~0#1.base, cmemchr_~p~0#1.offset;cmemchr_~p~0#1.base, cmemchr_~p~0#1.offset := cmemchr_#t~post3#1.base, 1 + cmemchr_#t~post3#1.offset;call cmemchr_#t~mem4#1 := read~int(cmemchr_#t~post3#1.base, cmemchr_#t~post3#1.offset, 1); 167#L519 assume !(cmemchr_#t~mem4#1 % 256 == cmemchr_~c#1 % 256);havoc cmemchr_#t~post3#1.base, cmemchr_#t~post3#1.offset;havoc cmemchr_#t~mem4#1; 169#L518-1 cmemchr_#t~pre2#1 := cmemchr_~n#1 - 1;cmemchr_~n#1 := cmemchr_~n#1 - 1; 168#L518-2 assume !!(0 != cmemchr_#t~pre2#1 % 4294967296);havoc cmemchr_#t~pre2#1; 166#L518-4 [2021-11-23 13:06:54,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:54,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1596934864, now seen corresponding path program 1 times [2021-11-23 13:06:54,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:06:54,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892316402] [2021-11-23 13:06:54,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:54,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:06:54,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:06:54,919 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:06:54,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:06:54,955 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:06:54,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:54,956 INFO L85 PathProgramCache]: Analyzing trace with hash 2036779, now seen corresponding path program 2 times [2021-11-23 13:06:54,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:06:54,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413704821] [2021-11-23 13:06:54,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:54,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:06:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:06:54,975 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:06:54,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-11-23 13:06:54,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:06:55,002 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:06:55,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:55,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1308516218, now seen corresponding path program 1 times [2021-11-23 13:06:55,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:06:55,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134138933] [2021-11-23 13:06:55,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:55,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:06:55,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:06:55,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:55,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:06:55,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134138933] [2021-11-23 13:06:55,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134138933] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:06:55,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649523301] [2021-11-23 13:06:55,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:55,185 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:06:55,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:06:55,187 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:06:55,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 13:06:55,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:06:55,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-23 13:06:55,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:06:55,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:55,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:06:55,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:55,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649523301] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:06:55,592 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:06:55,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2021-11-23 13:06:55,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724178319] [2021-11-23 13:06:55,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:06:55,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:06:55,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 13:06:55,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-11-23 13:06:55,691 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. cyclomatic complexity: 5 Second operand has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 16 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:55,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:06:55,913 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2021-11-23 13:06:55,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 13:06:55,916 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 30 transitions. [2021-11-23 13:06:55,917 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-23 13:06:55,917 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 17 states and 19 transitions. [2021-11-23 13:06:55,918 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2021-11-23 13:06:55,918 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2021-11-23 13:06:55,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 19 transitions. [2021-11-23 13:06:55,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 13:06:55,918 INFO L681 BuchiCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-11-23 13:06:55,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 19 transitions. [2021-11-23 13:06:55,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-11-23 13:06:55,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.125) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:55,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-11-23 13:06:55,921 INFO L704 BuchiCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-11-23 13:06:55,921 INFO L587 BuchiCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-11-23 13:06:55,921 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-23 13:06:55,921 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 18 transitions. [2021-11-23 13:06:55,921 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-23 13:06:55,922 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:06:55,922 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:06:55,922 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:06:55,922 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-23 13:06:55,923 INFO L791 eck$LassoCheckResult]: Stem: 308#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 309#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~malloc8#1.base, main_#t~malloc8#1.offset, main_#t~nondet10#1, main_#t~post9#1, main_~i~0#1, main_#t~ret11#1.base, main_#t~ret11#1.offset, main_~length~0#1, main_~n~0#1, main_~c~0#1, main_~nondetArea~0#1.base, main_~nondetArea~0#1.offset;main_~length~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;main_~n~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~c~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1; 315#L529 assume !(main_~length~0#1 < 1); 316#L529-2 assume !(main_~n~0#1 < 1); 306#L532-1 call main_#t~malloc8#1.base, main_#t~malloc8#1.offset := #Ultimate.allocOnStack(main_~n~0#1);main_~nondetArea~0#1.base, main_~nondetArea~0#1.offset := main_#t~malloc8#1.base, main_#t~malloc8#1.offset;main_~i~0#1 := 0; 307#L537-3 assume !!(main_~i~0#1 < main_~n~0#1);call write~int(main_#t~nondet10#1, main_~nondetArea~0#1.base, main_~nondetArea~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet10#1; 312#L537-2 main_#t~post9#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post9#1;havoc main_#t~post9#1; 313#L537-3 assume !!(main_~i~0#1 < main_~n~0#1);call write~int(main_#t~nondet10#1, main_~nondetArea~0#1.base, main_~nondetArea~0#1.offset + main_~i~0#1, 1);havoc main_#t~nondet10#1; 314#L537-2 main_#t~post9#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post9#1;havoc main_#t~post9#1; 320#L537-3 assume !(main_~i~0#1 < main_~n~0#1); 310#L537-4 assume { :begin_inline_cmemchr } true;cmemchr_#in~s#1.base, cmemchr_#in~s#1.offset, cmemchr_#in~c#1, cmemchr_#in~n#1 := main_~nondetArea~0#1.base, main_~nondetArea~0#1.offset, main_~c~0#1, main_~n~0#1;havoc cmemchr_#res#1.base, cmemchr_#res#1.offset;havoc cmemchr_#t~post3#1.base, cmemchr_#t~post3#1.offset, cmemchr_#t~mem4#1, cmemchr_#t~pre2#1, cmemchr_~p~0#1.base, cmemchr_~p~0#1.offset, cmemchr_~s#1.base, cmemchr_~s#1.offset, cmemchr_~c#1, cmemchr_~n#1;cmemchr_~s#1.base, cmemchr_~s#1.offset := cmemchr_#in~s#1.base, cmemchr_#in~s#1.offset;cmemchr_~c#1 := cmemchr_#in~c#1;cmemchr_~n#1 := cmemchr_#in~n#1; 311#L516 assume 0 != cmemchr_~n#1 % 4294967296;cmemchr_~p~0#1.base, cmemchr_~p~0#1.offset := cmemchr_~s#1.base, cmemchr_~s#1.offset; 317#L518-4 [2021-11-23 13:06:55,923 INFO L793 eck$LassoCheckResult]: Loop: 317#L518-4 cmemchr_#t~post3#1.base, cmemchr_#t~post3#1.offset := cmemchr_~p~0#1.base, cmemchr_~p~0#1.offset;cmemchr_~p~0#1.base, cmemchr_~p~0#1.offset := cmemchr_#t~post3#1.base, 1 + cmemchr_#t~post3#1.offset;call cmemchr_#t~mem4#1 := read~int(cmemchr_#t~post3#1.base, cmemchr_#t~post3#1.offset, 1); 318#L519 assume !(cmemchr_#t~mem4#1 % 256 == cmemchr_~c#1 % 256);havoc cmemchr_#t~post3#1.base, cmemchr_#t~post3#1.offset;havoc cmemchr_#t~mem4#1; 321#L518-1 cmemchr_#t~pre2#1 := cmemchr_~n#1 - 1;cmemchr_~n#1 := cmemchr_~n#1 - 1; 319#L518-2 assume !!(0 != cmemchr_#t~pre2#1 % 4294967296);havoc cmemchr_#t~pre2#1; 317#L518-4 [2021-11-23 13:06:55,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:55,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1352797870, now seen corresponding path program 2 times [2021-11-23 13:06:55,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:06:55,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933619572] [2021-11-23 13:06:55,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:55,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:06:55,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:06:55,938 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:06:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:06:55,955 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:06:55,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:55,955 INFO L85 PathProgramCache]: Analyzing trace with hash 2036779, now seen corresponding path program 3 times [2021-11-23 13:06:55,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:06:55,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752642209] [2021-11-23 13:06:55,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:55,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:06:55,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:06:55,963 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:06:55,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:06:55,972 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:06:55,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:55,972 INFO L85 PathProgramCache]: Analyzing trace with hash -24116136, now seen corresponding path program 2 times [2021-11-23 13:06:55,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:06:55,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120710637] [2021-11-23 13:06:55,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:06:55,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:06:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:06:55,995 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:06:56,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:06:56,019 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:06:56,577 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:06:56,577 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:06:56,577 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:06:56,578 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:06:56,578 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 13:06:56,578 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:06:56,578 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:06:56,578 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:06:56,578 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cmemchr-alloca-2.i_Iteration4_Lasso [2021-11-23 13:06:56,578 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:06:56,578 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:06:56,583 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:06:56,818 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:06:56,825 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:06:56,827 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:06:56,830 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:06:56,833 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:06:56,835 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:06:56,839 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:06:56,841 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:06:56,844 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:06:56,847 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:06:56,849 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:06:56,856 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:06:56,859 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:06:56,861 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:06:56,864 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:06:56,867 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:06:56,870 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:06:56,872 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:06:56,875 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:06:56,877 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:06:57,455 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:06:57,455 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 13:06:57,456 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:06:57,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:06:57,462 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:06:57,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-23 13:06:57,503 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-23 13:06:57,512 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:06:57,512 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:06:57,512 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:06:57,512 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:06:57,517 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-23 13:06:57,517 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-23 13:06:57,536 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:06:57,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-11-23 13:06:57,558 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:06:57,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:06:57,563 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:06:57,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-23 13:06:57,567 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-23 13:06:57,575 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:06:57,575 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:06:57,575 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:06:57,575 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:06:57,590 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-23 13:06:57,590 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-23 13:06:57,614 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 13:06:57,670 INFO L443 ModelExtractionUtils]: Simplification made 15 calls to the SMT solver. [2021-11-23 13:06:57,671 INFO L444 ModelExtractionUtils]: 9 out of 40 variables were initially zero. Simplification set additionally 28 variables to zero. [2021-11-23 13:06:57,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:06:57,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:06:57,678 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:06:57,680 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 13:06:57,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-11-23 13:06:57,703 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-11-23 13:06:57,704 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 13:06:57,704 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_cmemchr_~p~0#1.offset, v_rep(select #length ULTIMATE.start_cmemchr_~p~0#1.base)_1) = -1*ULTIMATE.start_cmemchr_~p~0#1.offset + 1*v_rep(select #length ULTIMATE.start_cmemchr_~p~0#1.base)_1 Supporting invariants [] [2021-11-23 13:06:57,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-11-23 13:06:57,759 INFO L297 tatePredicateManager]: 5 out of 5 supporting invariants were superfluous and have been removed [2021-11-23 13:06:57,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:06:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:06:57,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 13:06:57,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:06:57,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:06:57,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 13:06:57,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:06:57,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:06:57,864 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-11-23 13:06:57,864 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 18 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:57,870 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 18 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 20 states and 22 transitions. Complement of second has 4 states. [2021-11-23 13:06:57,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-23 13:06:57,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:06:57,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 16 transitions. [2021-11-23 13:06:57,874 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 12 letters. Loop has 4 letters. [2021-11-23 13:06:57,874 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:06:57,874 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 16 letters. Loop has 4 letters. [2021-11-23 13:06:57,875 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:06:57,875 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 12 letters. Loop has 8 letters. [2021-11-23 13:06:57,875 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:06:57,876 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 22 transitions. [2021-11-23 13:06:57,876 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-23 13:06:57,877 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 0 states and 0 transitions. [2021-11-23 13:06:57,877 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-11-23 13:06:57,877 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-11-23 13:06:57,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-11-23 13:06:57,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 13:06:57,877 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 13:06:57,878 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 13:06:57,878 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 13:06:57,878 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-11-23 13:06:57,878 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-11-23 13:06:57,878 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-23 13:06:57,878 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-11-23 13:06:57,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 01:06:57 BoogieIcfgContainer [2021-11-23 13:06:57,885 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-23 13:06:57,885 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 13:06:57,885 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 13:06:57,886 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 13:06:57,886 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:06:52" (3/4) ... [2021-11-23 13:06:57,889 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 13:06:57,889 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 13:06:57,891 INFO L158 Benchmark]: Toolchain (without parser) took 6272.22ms. Allocated memory was 113.2MB in the beginning and 142.6MB in the end (delta: 29.4MB). Free memory was 71.2MB in the beginning and 41.7MB in the end (delta: 29.6MB). Peak memory consumption was 58.2MB. Max. memory is 16.1GB. [2021-11-23 13:06:57,891 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 113.2MB. Free memory was 88.6MB in the beginning and 88.5MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:06:57,892 INFO L158 Benchmark]: CACSL2BoogieTranslator took 557.98ms. Allocated memory is still 113.2MB. Free memory was 71.1MB in the beginning and 79.3MB in the end (delta: -8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 13:06:57,892 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.85ms. Allocated memory is still 113.2MB. Free memory was 78.9MB in the beginning and 77.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 13:06:57,893 INFO L158 Benchmark]: Boogie Preprocessor took 53.31ms. Allocated memory is still 113.2MB. Free memory was 77.1MB in the beginning and 75.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:06:57,894 INFO L158 Benchmark]: RCFGBuilder took 347.89ms. Allocated memory is still 113.2MB. Free memory was 75.9MB in the beginning and 65.0MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 13:06:57,894 INFO L158 Benchmark]: BuchiAutomizer took 5222.64ms. Allocated memory was 113.2MB in the beginning and 142.6MB in the end (delta: 29.4MB). Free memory was 65.0MB in the beginning and 41.7MB in the end (delta: 23.4MB). Peak memory consumption was 54.2MB. Max. memory is 16.1GB. [2021-11-23 13:06:57,895 INFO L158 Benchmark]: Witness Printer took 4.26ms. Allocated memory is still 142.6MB. Free memory is still 41.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:06:57,898 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 113.2MB. Free memory was 88.6MB in the beginning and 88.5MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 557.98ms. Allocated memory is still 113.2MB. Free memory was 71.1MB in the beginning and 79.3MB in the end (delta: -8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.85ms. Allocated memory is still 113.2MB. Free memory was 78.9MB in the beginning and 77.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.31ms. Allocated memory is still 113.2MB. Free memory was 77.1MB in the beginning and 75.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 347.89ms. Allocated memory is still 113.2MB. Free memory was 75.9MB in the beginning and 65.0MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * BuchiAutomizer took 5222.64ms. Allocated memory was 113.2MB in the beginning and 142.6MB in the end (delta: 29.4MB). Free memory was 65.0MB in the beginning and 41.7MB in the end (delta: 23.4MB). Peak memory consumption was 54.2MB. Max. memory is 16.1GB. * Witness Printer took 4.26ms. Allocated memory is still 142.6MB. Free memory is still 41.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (2 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * i + -1 * nondetArea + unknown-#length-unknown[nondetArea] and consists of 5 locations. One deterministic module has affine ranking function -1 * p + unknown-#length-unknown[p] and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 16 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.1s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 4.4s. Construction of modules took 0.1s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 16 states and ocurred in iteration 3. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 123 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 121 mSDsluCounter, 132 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 80 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 93 IncrementalHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 52 mSDtfsCounter, 93 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU1 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital124 mio100 ax115 hnf100 lsp80 ukn90 mio100 lsp57 div125 bol100 ite100 ukn100 eq173 hnf81 smp94 dnf100 smp100 tf100 neg99 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 62ms VariablesStem: 3 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-11-23 13:06:57,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-11-23 13:06:58,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 13:06:58,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5559dbe8-bed2-4462-9312-1695adebf12a/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE