./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/ldv-regression/test27-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/ldv-regression/test27-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0 --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 8b17e864f5b8145df67cb2b3dc045f82af33b1bd3c9c5e4c95275bcb385f71da --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:26:23,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:26:23,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:26:23,257 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:26:23,258 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:26:23,262 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:26:23,264 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:26:23,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:26:23,272 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:26:23,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:26:23,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:26:23,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:26:23,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:26:23,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:26:23,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:26:23,294 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:26:23,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:26:23,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:26:23,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:26:23,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:26:23,313 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:26:23,315 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:26:23,318 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:26:23,320 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:26:23,330 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:26:23,331 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:26:23,331 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:26:23,334 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:26:23,335 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:26:23,336 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:26:23,337 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:26:23,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:26:23,340 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:26:23,342 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:26:23,344 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:26:23,344 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:26:23,345 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:26:23,346 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:26:23,346 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:26:23,347 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:26:23,348 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:26:23,349 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-11-22 15:26:23,390 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:26:23,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:26:23,391 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:26:23,391 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:26:23,392 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:26:23,393 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:26:23,393 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:26:23,393 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-22 15:26:23,394 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-22 15:26:23,394 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-22 15:26:23,394 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-22 15:26:23,394 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-22 15:26:23,395 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-22 15:26:23,395 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:26:23,395 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:26:23,395 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-22 15:26:23,396 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:26:23,396 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:26:23,396 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:26:23,396 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-22 15:26:23,397 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-22 15:26:23,397 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-22 15:26:23,397 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:26:23,397 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:26:23,398 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-22 15:26:23,398 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:26:23,398 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-22 15:26:23,398 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:26:23,399 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:26:23,399 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:26:23,399 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:26:23,399 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:26:23,401 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-22 15:26:23,401 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_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b17e864f5b8145df67cb2b3dc045f82af33b1bd3c9c5e4c95275bcb385f71da [2021-11-22 15:26:23,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:26:23,744 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:26:23,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:26:23,749 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:26:23,751 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:26:23,752 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/ldv-regression/test27-2.c [2021-11-22 15:26:23,870 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/data/4540245ee/6834039b8db94988a2a38d93e2cedd85/FLAGa3db8c5a0 [2021-11-22 15:26:24,342 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:26:24,343 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/sv-benchmarks/c/ldv-regression/test27-2.c [2021-11-22 15:26:24,350 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/data/4540245ee/6834039b8db94988a2a38d93e2cedd85/FLAGa3db8c5a0 [2021-11-22 15:26:24,732 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/data/4540245ee/6834039b8db94988a2a38d93e2cedd85 [2021-11-22 15:26:24,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:26:24,737 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:26:24,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:26:24,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:26:24,745 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:26:24,746 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:26:24" (1/1) ... [2021-11-22 15:26:24,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12b6a7df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:26:24, skipping insertion in model container [2021-11-22 15:26:24,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:26:24" (1/1) ... [2021-11-22 15:26:24,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:26:24,779 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:26:24,965 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/sv-benchmarks/c/ldv-regression/test27-2.c[1224,1237] [2021-11-22 15:26:24,966 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:26:24,976 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:26:25,000 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/sv-benchmarks/c/ldv-regression/test27-2.c[1224,1237] [2021-11-22 15:26:25,001 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:26:25,018 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:26:25,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:26:25 WrapperNode [2021-11-22 15:26:25,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:26:25,020 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:26:25,020 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:26:25,020 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:26:25,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:26:25" (1/1) ... [2021-11-22 15:26:25,039 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:26:25" (1/1) ... [2021-11-22 15:26:25,074 INFO L137 Inliner]: procedures = 16, calls = 42, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 110 [2021-11-22 15:26:25,074 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:26:25,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:26:25,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:26:25,075 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:26:25,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:26:25" (1/1) ... [2021-11-22 15:26:25,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:26:25" (1/1) ... [2021-11-22 15:26:25,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:26:25" (1/1) ... [2021-11-22 15:26:25,099 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:26:25" (1/1) ... [2021-11-22 15:26:25,129 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:26:25" (1/1) ... [2021-11-22 15:26:25,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:26:25" (1/1) ... [2021-11-22 15:26:25,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:26:25" (1/1) ... [2021-11-22 15:26:25,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:26:25,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:26:25,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:26:25,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:26:25,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:26:25" (1/1) ... [2021-11-22 15:26:25,163 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:26:25,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:26:25,205 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:26:25,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-22 15:26:25,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 15:26:25,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:26:25,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:26:25,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 15:26:25,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 15:26:25,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 15:26:25,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:26:25,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:26:25,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 15:26:25,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 15:26:25,384 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:26:25,386 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:26:25,763 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:26:25,771 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:26:25,771 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-22 15:26:25,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:26:25 BoogieIcfgContainer [2021-11-22 15:26:25,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:26:25,775 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-22 15:26:25,776 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-22 15:26:25,779 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-22 15:26:25,780 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-22 15:26:25,780 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.11 03:26:24" (1/3) ... [2021-11-22 15:26:25,781 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@13eadae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.11 03:26:25, skipping insertion in model container [2021-11-22 15:26:25,781 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-22 15:26:25,782 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:26:25" (2/3) ... [2021-11-22 15:26:25,782 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@13eadae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.11 03:26:25, skipping insertion in model container [2021-11-22 15:26:25,782 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-22 15:26:25,782 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:26:25" (3/3) ... [2021-11-22 15:26:25,784 INFO L388 chiAutomizerObserver]: Analyzing ICFG test27-2.c [2021-11-22 15:26:25,836 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-22 15:26:25,837 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-22 15:26:25,837 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-22 15:26:25,837 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-22 15:26:25,837 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-22 15:26:25,837 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-22 15:26:25,837 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-22 15:26:25,838 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-22 15:26:25,855 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 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) [2021-11-22 15:26:25,877 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2021-11-22 15:26:25,878 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 15:26:25,878 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 15:26:25,885 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-22 15:26:25,885 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-22 15:26:25,886 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-22 15:26:25,886 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 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) [2021-11-22 15:26:25,888 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2021-11-22 15:26:25,888 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 15:26:25,888 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 15:26:25,889 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-22 15:26:25,889 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-22 15:26:25,898 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 10#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet8#1, main_#t~nondet10#1, main_#t~post9#1, main_~j~0#1, main_#t~mem11#1.base, main_#t~mem11#1.offset, main_#t~mem12#1.base, main_#t~mem12#1.offset, main_#t~mem13#1.base, main_#t~mem13#1.offset, main_#t~mem14#1, main_#t~mem15#1.base, main_#t~mem15#1.offset, main_#t~mem16#1.base, main_#t~mem16#1.offset, main_#t~mem17#1, main_#t~pre19#1, main_#t~mem18#1, main_#t~ret20#1, main_~#cont~0#1.base, main_~#cont~0#1.offset, main_~#dummy~0#1.base, main_~#dummy~0#1.offset, main_~#dummies~0#1.base, main_~#dummies~0#1.offset, main_~#a~0#1.base, main_~#a~0#1.offset, main_~i~0#1, main_~pa~0#1.base, main_~pa~0#1.offset;call main_~#cont~0#1.base, main_~#cont~0#1.offset := #Ultimate.allocOnStack(4);call main_~#dummy~0#1.base, main_~#dummy~0#1.offset := #Ultimate.allocOnStack(4);call main_~#dummies~0#1.base, main_~#dummies~0#1.offset := #Ultimate.allocOnStack(40);call main_~#a~0#1.base, main_~#a~0#1.offset := #Ultimate.allocOnStack(40);havoc main_~i~0#1;havoc main_~pa~0#1.base, main_~pa~0#1.offset;main_~i~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;main_~j~0#1 := 0; 15#L29-3true [2021-11-22 15:26:25,898 INFO L793 eck$LassoCheckResult]: Loop: 15#L29-3true assume !!(main_~j~0#1 < 10);call write~int(main_#t~nondet10#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~j~0#1, 4);havoc main_#t~nondet10#1;call write~$Pointer$(0, 0, main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * main_~j~0#1, 4); 17#L29-2true main_#t~post9#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post9#1;havoc main_#t~post9#1; 15#L29-3true [2021-11-22 15:26:25,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:26:25,906 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-11-22 15:26:25,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:26:25,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169003771] [2021-11-22 15:26:25,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:26:25,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:26:26,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:26:26,145 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:26:26,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:26:26,236 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:26:26,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:26:26,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1283, now seen corresponding path program 1 times [2021-11-22 15:26:26,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:26:26,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304317711] [2021-11-22 15:26:26,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:26:26,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:26:26,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:26:26,273 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:26:26,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:26:26,290 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:26:26,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:26:26,292 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2021-11-22 15:26:26,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:26:26,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115959402] [2021-11-22 15:26:26,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:26:26,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:26:26,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:26:26,329 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:26:26,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:26:26,398 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:26:27,753 INFO L210 LassoAnalysis]: Preferences: [2021-11-22 15:26:27,754 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-22 15:26:27,755 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-22 15:26:27,755 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-22 15:26:27,755 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-22 15:26:27,755 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:26:27,755 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-22 15:26:27,755 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-22 15:26:27,756 INFO L133 ssoRankerPreferences]: Filename of dumped script: test27-2.c_Iteration1_Lasso [2021-11-22 15:26:27,756 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-22 15:26:27,757 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-22 15:26:27,790 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:26:27,797 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:26:27,801 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:26:27,804 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:26:27,807 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:26:28,452 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:26:28,455 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:26:28,460 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:26:28,464 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:26:28,467 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:26:28,470 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:26:28,473 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:26:28,476 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:26:28,479 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:26:28,484 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:26:28,487 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:26:28,490 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:26:28,493 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:26:28,496 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:26:28,499 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:26:28,502 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:26:28,504 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:26:28,508 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:26:28,513 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:26:28,519 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:26:28,522 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-22 15:26:29,006 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-22 15:26:29,013 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-22 15:26:29,016 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:26:29,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:26:29,019 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:26:29,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-22 15:26:29,022 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 [2021-11-22 15:26:29,035 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 15:26:29,035 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 15:26:29,036 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 15:26:29,036 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 15:26:29,041 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-22 15:26:29,041 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-22 15:26:29,055 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-22 15:26:29,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-11-22 15:26:29,081 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:26:29,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:26:29,082 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:26:29,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-22 15:26:29,084 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 [2021-11-22 15:26:29,102 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 15:26:29,102 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 15:26:29,102 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 15:26:29,102 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 15:26:29,113 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-22 15:26:29,113 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-22 15:26:29,118 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-22 15:26:29,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-22 15:26:29,158 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:26:29,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:26:29,160 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:26:29,184 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 [2021-11-22 15:26:29,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-22 15:26:29,193 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 15:26:29,193 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-22 15:26:29,194 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 15:26:29,194 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 15:26:29,194 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 15:26:29,195 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-22 15:26:29,195 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-22 15:26:29,196 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-22 15:26:29,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-22 15:26:29,222 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:26:29,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:26:29,223 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:26:29,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-22 15:26:29,225 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 [2021-11-22 15:26:29,233 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 15:26:29,233 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-22 15:26:29,233 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 15:26:29,233 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 15:26:29,233 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 15:26:29,234 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-22 15:26:29,234 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-22 15:26:29,247 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-22 15:26:29,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-11-22 15:26:29,270 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:26:29,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:26:29,272 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:26:29,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-22 15:26:29,278 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 [2021-11-22 15:26:29,287 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-22 15:26:29,287 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-22 15:26:29,287 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-22 15:26:29,287 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-22 15:26:29,298 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-22 15:26:29,298 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-22 15:26:29,331 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-22 15:26:29,373 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2021-11-22 15:26:29,373 INFO L444 ModelExtractionUtils]: 6 out of 19 variables were initially zero. Simplification set additionally 10 variables to zero. [2021-11-22 15:26:29,375 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-22 15:26:29,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:26:29,379 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-22 15:26:29,410 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-22 15:26:29,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-22 15:26:29,442 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-11-22 15:26:29,443 INFO L513 LassoAnalysis]: Proved termination. [2021-11-22 15:26:29,443 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1, v_rep(select #length ULTIMATE.start_main_~#a~0#1.base)_1) = -8*ULTIMATE.start_main_~j~0#1 + 19*v_rep(select #length ULTIMATE.start_main_~#a~0#1.base)_1 Supporting invariants [] [2021-11-22 15:26:29,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2021-11-22 15:26:29,697 INFO L297 tatePredicateManager]: 26 out of 26 supporting invariants were superfluous and have been removed [2021-11-22 15:26:29,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:26:29,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:26:29,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-22 15:26:29,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:26:29,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:26:29,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 15:26:29,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:26:29,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:26:29,854 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 [2021-11-22 15:26:29,856 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 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 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-11-22 15:26:29,957 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 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 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 39 states and 56 transitions. Complement of second has 8 states. [2021-11-22 15:26:29,959 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 [2021-11-22 15:26:29,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-11-22 15:26:29,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 35 transitions. [2021-11-22 15:26:29,967 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 35 transitions. Stem has 2 letters. Loop has 2 letters. [2021-11-22 15:26:29,968 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-22 15:26:29,968 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 35 transitions. Stem has 4 letters. Loop has 2 letters. [2021-11-22 15:26:29,968 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-22 15:26:29,969 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 35 transitions. Stem has 2 letters. Loop has 4 letters. [2021-11-22 15:26:29,969 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-22 15:26:29,970 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 56 transitions. [2021-11-22 15:26:29,975 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-22 15:26:29,979 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 9 states and 11 transitions. [2021-11-22 15:26:29,980 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-11-22 15:26:29,980 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-11-22 15:26:29,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 11 transitions. [2021-11-22 15:26:29,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 15:26:29,982 INFO L681 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2021-11-22 15:26:30,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 11 transitions. [2021-11-22 15:26:30,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-22 15:26:30,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 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) [2021-11-22 15:26:30,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2021-11-22 15:26:30,049 INFO L704 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2021-11-22 15:26:30,049 INFO L587 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2021-11-22 15:26:30,049 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-22 15:26:30,050 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 11 transitions. [2021-11-22 15:26:30,050 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-22 15:26:30,051 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 15:26:30,051 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 15:26:30,051 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-11-22 15:26:30,051 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-22 15:26:30,052 INFO L791 eck$LassoCheckResult]: Stem: 199#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 200#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet8#1, main_#t~nondet10#1, main_#t~post9#1, main_~j~0#1, main_#t~mem11#1.base, main_#t~mem11#1.offset, main_#t~mem12#1.base, main_#t~mem12#1.offset, main_#t~mem13#1.base, main_#t~mem13#1.offset, main_#t~mem14#1, main_#t~mem15#1.base, main_#t~mem15#1.offset, main_#t~mem16#1.base, main_#t~mem16#1.offset, main_#t~mem17#1, main_#t~pre19#1, main_#t~mem18#1, main_#t~ret20#1, main_~#cont~0#1.base, main_~#cont~0#1.offset, main_~#dummy~0#1.base, main_~#dummy~0#1.offset, main_~#dummies~0#1.base, main_~#dummies~0#1.offset, main_~#a~0#1.base, main_~#a~0#1.offset, main_~i~0#1, main_~pa~0#1.base, main_~pa~0#1.offset;call main_~#cont~0#1.base, main_~#cont~0#1.offset := #Ultimate.allocOnStack(4);call main_~#dummy~0#1.base, main_~#dummy~0#1.offset := #Ultimate.allocOnStack(4);call main_~#dummies~0#1.base, main_~#dummies~0#1.offset := #Ultimate.allocOnStack(40);call main_~#a~0#1.base, main_~#a~0#1.offset := #Ultimate.allocOnStack(40);havoc main_~i~0#1;havoc main_~pa~0#1.base, main_~pa~0#1.offset;main_~i~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;main_~j~0#1 := 0; 201#L29-3 assume !(main_~j~0#1 < 10); 202#L29-4 assume main_~i~0#1 >= 0 && main_~i~0#1 < 9;call write~int(main_~i~0#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);call write~$Pointer$(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, main_~#dummy~0#1.base, main_~#dummy~0#1.offset, 4);call write~$Pointer$(main_~#dummy~0#1.base, main_~#dummy~0#1.offset, main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * (1 + main_~i~0#1), 4);call write~$Pointer$(main_~#dummies~0#1.base, main_~#dummies~0#1.offset, main_~#cont~0#1.base, main_~#cont~0#1.offset, 4);call main_#t~mem11#1.base, main_#t~mem11#1.offset := read~$Pointer$(main_~#cont~0#1.base, main_~#cont~0#1.offset, 4);call main_#t~mem12#1.base, main_#t~mem12#1.offset := read~$Pointer$(main_#t~mem11#1.base, main_#t~mem11#1.offset + 4 * main_~i~0#1, 4);call main_#t~mem13#1.base, main_#t~mem13#1.offset := read~$Pointer$(main_#t~mem12#1.base, main_#t~mem12#1.offset, 4);main_~pa~0#1.base, main_~pa~0#1.offset := main_#t~mem13#1.base, main_#t~mem13#1.offset + 4 * main_~i~0#1;havoc main_#t~mem11#1.base, main_#t~mem11#1.offset;havoc main_#t~mem12#1.base, main_#t~mem12#1.offset;havoc main_#t~mem13#1.base, main_#t~mem13#1.offset;call main_#t~mem14#1 := read~int(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4); 205#L42 assume main_#t~mem14#1 > 0;havoc main_#t~mem14#1;call main_#t~mem15#1.base, main_#t~mem15#1.offset := read~$Pointer$(main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * (1 + main_~i~0#1), 4);call main_#t~mem16#1.base, main_#t~mem16#1.offset := read~$Pointer$(main_#t~mem15#1.base, main_#t~mem15#1.offset, 4);call main_#t~mem17#1 := read~int(main_#t~mem16#1.base, main_#t~mem16#1.offset + 4 * main_~i~0#1, 4);main_~i~0#1 := main_#t~mem17#1 - 10;havoc main_#t~mem15#1.base, main_#t~mem15#1.offset;havoc main_#t~mem16#1.base, main_#t~mem16#1.offset;havoc main_#t~mem17#1; 206#L44-3 [2021-11-22 15:26:30,052 INFO L793 eck$LassoCheckResult]: Loop: 206#L44-3 call main_#t~mem18#1 := read~int(main_~pa~0#1.base, main_~pa~0#1.offset, 4); 207#L44-1 assume !!(main_~i~0#1 < main_#t~mem18#1);havoc main_#t~mem18#1;main_#t~pre19#1 := 1 + main_~i~0#1;main_~i~0#1 := 1 + main_~i~0#1;havoc main_#t~pre19#1; 206#L44-3 [2021-11-22 15:26:30,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:26:30,053 INFO L85 PathProgramCache]: Analyzing trace with hash 28697000, now seen corresponding path program 1 times [2021-11-22 15:26:30,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:26:30,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995715786] [2021-11-22 15:26:30,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:26:30,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:26:30,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:26:30,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:26:30,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:26:30,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995715786] [2021-11-22 15:26:30,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995715786] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:26:30,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:26:30,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:26:30,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851889501] [2021-11-22 15:26:30,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:26:30,109 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-22 15:26:30,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:26:30,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1798, now seen corresponding path program 1 times [2021-11-22 15:26:30,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:26:30,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019608745] [2021-11-22 15:26:30,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:26:30,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:26:30,119 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2021-11-22 15:26:30,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:26:30,126 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:26:30,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:26:30,132 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:26:30,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:26:30,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:26:30,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:26:30,174 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-11-22 15:26:30,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:26:30,190 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2021-11-22 15:26:30,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:26:30,192 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 11 transitions. [2021-11-22 15:26:30,194 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-22 15:26:30,197 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 10 states and 11 transitions. [2021-11-22 15:26:30,197 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-11-22 15:26:30,198 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-11-22 15:26:30,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 11 transitions. [2021-11-22 15:26:30,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 15:26:30,199 INFO L681 BuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-11-22 15:26:30,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 11 transitions. [2021-11-22 15:26:30,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2021-11-22 15:26:30,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 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) [2021-11-22 15:26:30,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-11-22 15:26:30,204 INFO L704 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-11-22 15:26:30,204 INFO L587 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-11-22 15:26:30,204 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-22 15:26:30,204 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 10 transitions. [2021-11-22 15:26:30,206 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-22 15:26:30,206 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 15:26:30,206 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 15:26:30,207 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:26:30,207 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-22 15:26:30,207 INFO L791 eck$LassoCheckResult]: Stem: 224#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 225#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet8#1, main_#t~nondet10#1, main_#t~post9#1, main_~j~0#1, main_#t~mem11#1.base, main_#t~mem11#1.offset, main_#t~mem12#1.base, main_#t~mem12#1.offset, main_#t~mem13#1.base, main_#t~mem13#1.offset, main_#t~mem14#1, main_#t~mem15#1.base, main_#t~mem15#1.offset, main_#t~mem16#1.base, main_#t~mem16#1.offset, main_#t~mem17#1, main_#t~pre19#1, main_#t~mem18#1, main_#t~ret20#1, main_~#cont~0#1.base, main_~#cont~0#1.offset, main_~#dummy~0#1.base, main_~#dummy~0#1.offset, main_~#dummies~0#1.base, main_~#dummies~0#1.offset, main_~#a~0#1.base, main_~#a~0#1.offset, main_~i~0#1, main_~pa~0#1.base, main_~pa~0#1.offset;call main_~#cont~0#1.base, main_~#cont~0#1.offset := #Ultimate.allocOnStack(4);call main_~#dummy~0#1.base, main_~#dummy~0#1.offset := #Ultimate.allocOnStack(4);call main_~#dummies~0#1.base, main_~#dummies~0#1.offset := #Ultimate.allocOnStack(40);call main_~#a~0#1.base, main_~#a~0#1.offset := #Ultimate.allocOnStack(40);havoc main_~i~0#1;havoc main_~pa~0#1.base, main_~pa~0#1.offset;main_~i~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;main_~j~0#1 := 0; 226#L29-3 assume !!(main_~j~0#1 < 10);call write~int(main_#t~nondet10#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~j~0#1, 4);havoc main_#t~nondet10#1;call write~$Pointer$(0, 0, main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * main_~j~0#1, 4); 227#L29-2 main_#t~post9#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post9#1;havoc main_#t~post9#1; 228#L29-3 assume !(main_~j~0#1 < 10); 229#L29-4 assume main_~i~0#1 >= 0 && main_~i~0#1 < 9;call write~int(main_~i~0#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);call write~$Pointer$(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, main_~#dummy~0#1.base, main_~#dummy~0#1.offset, 4);call write~$Pointer$(main_~#dummy~0#1.base, main_~#dummy~0#1.offset, main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * (1 + main_~i~0#1), 4);call write~$Pointer$(main_~#dummies~0#1.base, main_~#dummies~0#1.offset, main_~#cont~0#1.base, main_~#cont~0#1.offset, 4);call main_#t~mem11#1.base, main_#t~mem11#1.offset := read~$Pointer$(main_~#cont~0#1.base, main_~#cont~0#1.offset, 4);call main_#t~mem12#1.base, main_#t~mem12#1.offset := read~$Pointer$(main_#t~mem11#1.base, main_#t~mem11#1.offset + 4 * main_~i~0#1, 4);call main_#t~mem13#1.base, main_#t~mem13#1.offset := read~$Pointer$(main_#t~mem12#1.base, main_#t~mem12#1.offset, 4);main_~pa~0#1.base, main_~pa~0#1.offset := main_#t~mem13#1.base, main_#t~mem13#1.offset + 4 * main_~i~0#1;havoc main_#t~mem11#1.base, main_#t~mem11#1.offset;havoc main_#t~mem12#1.base, main_#t~mem12#1.offset;havoc main_#t~mem13#1.base, main_#t~mem13#1.offset;call main_#t~mem14#1 := read~int(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4); 230#L42 assume main_#t~mem14#1 > 0;havoc main_#t~mem14#1;call main_#t~mem15#1.base, main_#t~mem15#1.offset := read~$Pointer$(main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * (1 + main_~i~0#1), 4);call main_#t~mem16#1.base, main_#t~mem16#1.offset := read~$Pointer$(main_#t~mem15#1.base, main_#t~mem15#1.offset, 4);call main_#t~mem17#1 := read~int(main_#t~mem16#1.base, main_#t~mem16#1.offset + 4 * main_~i~0#1, 4);main_~i~0#1 := main_#t~mem17#1 - 10;havoc main_#t~mem15#1.base, main_#t~mem15#1.offset;havoc main_#t~mem16#1.base, main_#t~mem16#1.offset;havoc main_#t~mem17#1; 231#L44-3 [2021-11-22 15:26:30,207 INFO L793 eck$LassoCheckResult]: Loop: 231#L44-3 call main_#t~mem18#1 := read~int(main_~pa~0#1.base, main_~pa~0#1.offset, 4); 232#L44-1 assume !!(main_~i~0#1 < main_#t~mem18#1);havoc main_#t~mem18#1;main_#t~pre19#1 := 1 + main_~i~0#1;main_~i~0#1 := 1 + main_~i~0#1;havoc main_#t~pre19#1; 231#L44-3 [2021-11-22 15:26:30,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:26:30,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1809669606, now seen corresponding path program 1 times [2021-11-22 15:26:30,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:26:30,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25654794] [2021-11-22 15:26:30,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:26:30,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:26:30,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:26:30,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:26:30,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:26:30,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25654794] [2021-11-22 15:26:30,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25654794] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:26:30,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781531193] [2021-11-22 15:26:30,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:26:30,320 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:26:30,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:26:30,327 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:26:30,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-22 15:26:30,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:26:30,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:26:30,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:26:30,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:26:30,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:26:30,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:26:30,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781531193] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:26:30,471 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:26:30,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-22 15:26:30,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496039884] [2021-11-22 15:26:30,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:26:30,473 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-22 15:26:30,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:26:30,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1798, now seen corresponding path program 2 times [2021-11-22 15:26:30,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:26:30,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890815092] [2021-11-22 15:26:30,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:26:30,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:26:30,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:26:30,483 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:26:30,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:26:30,493 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:26:30,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:26:30,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:26:30,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:26:30,538 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. cyclomatic complexity: 3 Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 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) [2021-11-22 15:26:30,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:26:30,588 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2021-11-22 15:26:30,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:26:30,590 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 16 transitions. [2021-11-22 15:26:30,593 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-22 15:26:30,594 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 15 states and 16 transitions. [2021-11-22 15:26:30,594 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-11-22 15:26:30,594 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-11-22 15:26:30,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 16 transitions. [2021-11-22 15:26:30,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 15:26:30,596 INFO L681 BuchiCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-11-22 15:26:30,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 16 transitions. [2021-11-22 15:26:30,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-22 15:26:30,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 14 states have internal predecessors, (16), 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) [2021-11-22 15:26:30,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-11-22 15:26:30,599 INFO L704 BuchiCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-11-22 15:26:30,600 INFO L587 BuchiCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-11-22 15:26:30,600 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-22 15:26:30,600 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 16 transitions. [2021-11-22 15:26:30,602 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-22 15:26:30,603 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 15:26:30,603 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 15:26:30,605 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 1, 1, 1, 1, 1] [2021-11-22 15:26:30,606 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-22 15:26:30,606 INFO L791 eck$LassoCheckResult]: Stem: 298#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 299#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet8#1, main_#t~nondet10#1, main_#t~post9#1, main_~j~0#1, main_#t~mem11#1.base, main_#t~mem11#1.offset, main_#t~mem12#1.base, main_#t~mem12#1.offset, main_#t~mem13#1.base, main_#t~mem13#1.offset, main_#t~mem14#1, main_#t~mem15#1.base, main_#t~mem15#1.offset, main_#t~mem16#1.base, main_#t~mem16#1.offset, main_#t~mem17#1, main_#t~pre19#1, main_#t~mem18#1, main_#t~ret20#1, main_~#cont~0#1.base, main_~#cont~0#1.offset, main_~#dummy~0#1.base, main_~#dummy~0#1.offset, main_~#dummies~0#1.base, main_~#dummies~0#1.offset, main_~#a~0#1.base, main_~#a~0#1.offset, main_~i~0#1, main_~pa~0#1.base, main_~pa~0#1.offset;call main_~#cont~0#1.base, main_~#cont~0#1.offset := #Ultimate.allocOnStack(4);call main_~#dummy~0#1.base, main_~#dummy~0#1.offset := #Ultimate.allocOnStack(4);call main_~#dummies~0#1.base, main_~#dummies~0#1.offset := #Ultimate.allocOnStack(40);call main_~#a~0#1.base, main_~#a~0#1.offset := #Ultimate.allocOnStack(40);havoc main_~i~0#1;havoc main_~pa~0#1.base, main_~pa~0#1.offset;main_~i~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;main_~j~0#1 := 0; 294#L29-3 assume !!(main_~j~0#1 < 10);call write~int(main_#t~nondet10#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~j~0#1, 4);havoc main_#t~nondet10#1;call write~$Pointer$(0, 0, main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * main_~j~0#1, 4); 295#L29-2 main_#t~post9#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post9#1;havoc main_#t~post9#1; 296#L29-3 assume !!(main_~j~0#1 < 10);call write~int(main_#t~nondet10#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~j~0#1, 4);havoc main_#t~nondet10#1;call write~$Pointer$(0, 0, main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * main_~j~0#1, 4); 297#L29-2 main_#t~post9#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post9#1;havoc main_#t~post9#1; 304#L29-3 assume !!(main_~j~0#1 < 10);call write~int(main_#t~nondet10#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~j~0#1, 4);havoc main_#t~nondet10#1;call write~$Pointer$(0, 0, main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * main_~j~0#1, 4); 308#L29-2 main_#t~post9#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post9#1;havoc main_#t~post9#1; 307#L29-3 assume !!(main_~j~0#1 < 10);call write~int(main_#t~nondet10#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~j~0#1, 4);havoc main_#t~nondet10#1;call write~$Pointer$(0, 0, main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * main_~j~0#1, 4); 306#L29-2 main_#t~post9#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post9#1;havoc main_#t~post9#1; 305#L29-3 assume !(main_~j~0#1 < 10); 300#L29-4 assume main_~i~0#1 >= 0 && main_~i~0#1 < 9;call write~int(main_~i~0#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);call write~$Pointer$(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, main_~#dummy~0#1.base, main_~#dummy~0#1.offset, 4);call write~$Pointer$(main_~#dummy~0#1.base, main_~#dummy~0#1.offset, main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * (1 + main_~i~0#1), 4);call write~$Pointer$(main_~#dummies~0#1.base, main_~#dummies~0#1.offset, main_~#cont~0#1.base, main_~#cont~0#1.offset, 4);call main_#t~mem11#1.base, main_#t~mem11#1.offset := read~$Pointer$(main_~#cont~0#1.base, main_~#cont~0#1.offset, 4);call main_#t~mem12#1.base, main_#t~mem12#1.offset := read~$Pointer$(main_#t~mem11#1.base, main_#t~mem11#1.offset + 4 * main_~i~0#1, 4);call main_#t~mem13#1.base, main_#t~mem13#1.offset := read~$Pointer$(main_#t~mem12#1.base, main_#t~mem12#1.offset, 4);main_~pa~0#1.base, main_~pa~0#1.offset := main_#t~mem13#1.base, main_#t~mem13#1.offset + 4 * main_~i~0#1;havoc main_#t~mem11#1.base, main_#t~mem11#1.offset;havoc main_#t~mem12#1.base, main_#t~mem12#1.offset;havoc main_#t~mem13#1.base, main_#t~mem13#1.offset;call main_#t~mem14#1 := read~int(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4); 301#L42 assume main_#t~mem14#1 > 0;havoc main_#t~mem14#1;call main_#t~mem15#1.base, main_#t~mem15#1.offset := read~$Pointer$(main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * (1 + main_~i~0#1), 4);call main_#t~mem16#1.base, main_#t~mem16#1.offset := read~$Pointer$(main_#t~mem15#1.base, main_#t~mem15#1.offset, 4);call main_#t~mem17#1 := read~int(main_#t~mem16#1.base, main_#t~mem16#1.offset + 4 * main_~i~0#1, 4);main_~i~0#1 := main_#t~mem17#1 - 10;havoc main_#t~mem15#1.base, main_#t~mem15#1.offset;havoc main_#t~mem16#1.base, main_#t~mem16#1.offset;havoc main_#t~mem17#1; 302#L44-3 [2021-11-22 15:26:30,606 INFO L793 eck$LassoCheckResult]: Loop: 302#L44-3 call main_#t~mem18#1 := read~int(main_~pa~0#1.base, main_~pa~0#1.offset, 4); 303#L44-1 assume !!(main_~i~0#1 < main_#t~mem18#1);havoc main_#t~mem18#1;main_#t~pre19#1 := 1 + main_~i~0#1;main_~i~0#1 := 1 + main_~i~0#1;havoc main_#t~pre19#1; 302#L44-3 [2021-11-22 15:26:30,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:26:30,607 INFO L85 PathProgramCache]: Analyzing trace with hash 82232736, now seen corresponding path program 2 times [2021-11-22 15:26:30,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:26:30,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302835816] [2021-11-22 15:26:30,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:26:30,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:26:30,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:26:30,731 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:26:30,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:26:30,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302835816] [2021-11-22 15:26:30,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302835816] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:26:30,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899955108] [2021-11-22 15:26:30,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 15:26:30,733 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:26:30,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:26:30,734 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:26:30,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-22 15:26:30,828 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 15:26:30,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:26:30,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 15:26:30,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:26:30,885 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:26:30,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:26:30,992 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:26:30,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899955108] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:26:30,993 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:26:30,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-11-22 15:26:30,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664171176] [2021-11-22 15:26:30,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:26:30,994 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-22 15:26:30,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:26:30,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1798, now seen corresponding path program 3 times [2021-11-22 15:26:30,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:26:30,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008193576] [2021-11-22 15:26:30,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:26:30,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:26:30,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:26:31,000 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:26:31,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:26:31,004 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:26:31,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:26:31,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-22 15:26:31,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-11-22 15:26:31,044 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. cyclomatic complexity: 3 Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 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) [2021-11-22 15:26:31,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:26:31,117 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-11-22 15:26:31,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-22 15:26:31,118 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 28 transitions. [2021-11-22 15:26:31,120 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-22 15:26:31,120 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 27 states and 28 transitions. [2021-11-22 15:26:31,121 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-11-22 15:26:31,121 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-11-22 15:26:31,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 28 transitions. [2021-11-22 15:26:31,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 15:26:31,121 INFO L681 BuchiCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-11-22 15:26:31,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 28 transitions. [2021-11-22 15:26:31,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-11-22 15:26:31,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 27 states have (on average 1.037037037037037) internal successors, (28), 26 states have internal predecessors, (28), 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) [2021-11-22 15:26:31,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-11-22 15:26:31,125 INFO L704 BuchiCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-11-22 15:26:31,125 INFO L587 BuchiCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-11-22 15:26:31,125 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-11-22 15:26:31,125 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 28 transitions. [2021-11-22 15:26:31,126 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-22 15:26:31,126 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-22 15:26:31,126 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-22 15:26:31,127 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [10, 10, 1, 1, 1, 1, 1] [2021-11-22 15:26:31,127 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-22 15:26:31,127 INFO L791 eck$LassoCheckResult]: Stem: 424#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 425#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet8#1, main_#t~nondet10#1, main_#t~post9#1, main_~j~0#1, main_#t~mem11#1.base, main_#t~mem11#1.offset, main_#t~mem12#1.base, main_#t~mem12#1.offset, main_#t~mem13#1.base, main_#t~mem13#1.offset, main_#t~mem14#1, main_#t~mem15#1.base, main_#t~mem15#1.offset, main_#t~mem16#1.base, main_#t~mem16#1.offset, main_#t~mem17#1, main_#t~pre19#1, main_#t~mem18#1, main_#t~ret20#1, main_~#cont~0#1.base, main_~#cont~0#1.offset, main_~#dummy~0#1.base, main_~#dummy~0#1.offset, main_~#dummies~0#1.base, main_~#dummies~0#1.offset, main_~#a~0#1.base, main_~#a~0#1.offset, main_~i~0#1, main_~pa~0#1.base, main_~pa~0#1.offset;call main_~#cont~0#1.base, main_~#cont~0#1.offset := #Ultimate.allocOnStack(4);call main_~#dummy~0#1.base, main_~#dummy~0#1.offset := #Ultimate.allocOnStack(4);call main_~#dummies~0#1.base, main_~#dummies~0#1.offset := #Ultimate.allocOnStack(40);call main_~#a~0#1.base, main_~#a~0#1.offset := #Ultimate.allocOnStack(40);havoc main_~i~0#1;havoc main_~pa~0#1.base, main_~pa~0#1.offset;main_~i~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;main_~j~0#1 := 0; 426#L29-3 assume !!(main_~j~0#1 < 10);call write~int(main_#t~nondet10#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~j~0#1, 4);havoc main_#t~nondet10#1;call write~$Pointer$(0, 0, main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * main_~j~0#1, 4); 427#L29-2 main_#t~post9#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post9#1;havoc main_#t~post9#1; 428#L29-3 assume !!(main_~j~0#1 < 10);call write~int(main_#t~nondet10#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~j~0#1, 4);havoc main_#t~nondet10#1;call write~$Pointer$(0, 0, main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * main_~j~0#1, 4); 429#L29-2 main_#t~post9#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post9#1;havoc main_#t~post9#1; 434#L29-3 assume !!(main_~j~0#1 < 10);call write~int(main_#t~nondet10#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~j~0#1, 4);havoc main_#t~nondet10#1;call write~$Pointer$(0, 0, main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * main_~j~0#1, 4); 450#L29-2 main_#t~post9#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post9#1;havoc main_#t~post9#1; 449#L29-3 assume !!(main_~j~0#1 < 10);call write~int(main_#t~nondet10#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~j~0#1, 4);havoc main_#t~nondet10#1;call write~$Pointer$(0, 0, main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * main_~j~0#1, 4); 448#L29-2 main_#t~post9#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post9#1;havoc main_#t~post9#1; 447#L29-3 assume !!(main_~j~0#1 < 10);call write~int(main_#t~nondet10#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~j~0#1, 4);havoc main_#t~nondet10#1;call write~$Pointer$(0, 0, main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * main_~j~0#1, 4); 446#L29-2 main_#t~post9#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post9#1;havoc main_#t~post9#1; 445#L29-3 assume !!(main_~j~0#1 < 10);call write~int(main_#t~nondet10#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~j~0#1, 4);havoc main_#t~nondet10#1;call write~$Pointer$(0, 0, main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * main_~j~0#1, 4); 444#L29-2 main_#t~post9#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post9#1;havoc main_#t~post9#1; 443#L29-3 assume !!(main_~j~0#1 < 10);call write~int(main_#t~nondet10#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~j~0#1, 4);havoc main_#t~nondet10#1;call write~$Pointer$(0, 0, main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * main_~j~0#1, 4); 442#L29-2 main_#t~post9#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post9#1;havoc main_#t~post9#1; 441#L29-3 assume !!(main_~j~0#1 < 10);call write~int(main_#t~nondet10#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~j~0#1, 4);havoc main_#t~nondet10#1;call write~$Pointer$(0, 0, main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * main_~j~0#1, 4); 440#L29-2 main_#t~post9#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post9#1;havoc main_#t~post9#1; 439#L29-3 assume !!(main_~j~0#1 < 10);call write~int(main_#t~nondet10#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~j~0#1, 4);havoc main_#t~nondet10#1;call write~$Pointer$(0, 0, main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * main_~j~0#1, 4); 438#L29-2 main_#t~post9#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post9#1;havoc main_#t~post9#1; 437#L29-3 assume !!(main_~j~0#1 < 10);call write~int(main_#t~nondet10#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~j~0#1, 4);havoc main_#t~nondet10#1;call write~$Pointer$(0, 0, main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * main_~j~0#1, 4); 436#L29-2 main_#t~post9#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post9#1;havoc main_#t~post9#1; 435#L29-3 assume !(main_~j~0#1 < 10); 430#L29-4 assume main_~i~0#1 >= 0 && main_~i~0#1 < 9;call write~int(main_~i~0#1, main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4);call write~$Pointer$(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, main_~#dummy~0#1.base, main_~#dummy~0#1.offset, 4);call write~$Pointer$(main_~#dummy~0#1.base, main_~#dummy~0#1.offset, main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * (1 + main_~i~0#1), 4);call write~$Pointer$(main_~#dummies~0#1.base, main_~#dummies~0#1.offset, main_~#cont~0#1.base, main_~#cont~0#1.offset, 4);call main_#t~mem11#1.base, main_#t~mem11#1.offset := read~$Pointer$(main_~#cont~0#1.base, main_~#cont~0#1.offset, 4);call main_#t~mem12#1.base, main_#t~mem12#1.offset := read~$Pointer$(main_#t~mem11#1.base, main_#t~mem11#1.offset + 4 * main_~i~0#1, 4);call main_#t~mem13#1.base, main_#t~mem13#1.offset := read~$Pointer$(main_#t~mem12#1.base, main_#t~mem12#1.offset, 4);main_~pa~0#1.base, main_~pa~0#1.offset := main_#t~mem13#1.base, main_#t~mem13#1.offset + 4 * main_~i~0#1;havoc main_#t~mem11#1.base, main_#t~mem11#1.offset;havoc main_#t~mem12#1.base, main_#t~mem12#1.offset;havoc main_#t~mem13#1.base, main_#t~mem13#1.offset;call main_#t~mem14#1 := read~int(main_~#a~0#1.base, main_~#a~0#1.offset + 4 * main_~i~0#1, 4); 431#L42 assume main_#t~mem14#1 > 0;havoc main_#t~mem14#1;call main_#t~mem15#1.base, main_#t~mem15#1.offset := read~$Pointer$(main_~#dummies~0#1.base, main_~#dummies~0#1.offset + 4 * (1 + main_~i~0#1), 4);call main_#t~mem16#1.base, main_#t~mem16#1.offset := read~$Pointer$(main_#t~mem15#1.base, main_#t~mem15#1.offset, 4);call main_#t~mem17#1 := read~int(main_#t~mem16#1.base, main_#t~mem16#1.offset + 4 * main_~i~0#1, 4);main_~i~0#1 := main_#t~mem17#1 - 10;havoc main_#t~mem15#1.base, main_#t~mem15#1.offset;havoc main_#t~mem16#1.base, main_#t~mem16#1.offset;havoc main_#t~mem17#1; 432#L44-3 [2021-11-22 15:26:31,127 INFO L793 eck$LassoCheckResult]: Loop: 432#L44-3 call main_#t~mem18#1 := read~int(main_~pa~0#1.base, main_~pa~0#1.offset, 4); 433#L44-1 assume !!(main_~i~0#1 < main_#t~mem18#1);havoc main_#t~mem18#1;main_#t~pre19#1 := 1 + main_~i~0#1;main_~i~0#1 := 1 + main_~i~0#1;havoc main_#t~pre19#1; 432#L44-3 [2021-11-22 15:26:31,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:26:31,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1520933524, now seen corresponding path program 3 times [2021-11-22 15:26:31,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:26:31,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913324744] [2021-11-22 15:26:31,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:26:31,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:26:31,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:26:35,837 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 12 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:26:35,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:26:35,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913324744] [2021-11-22 15:26:35,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913324744] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:26:35,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112453416] [2021-11-22 15:26:35,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-22 15:26:35,838 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:26:35,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:26:35,872 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:26:35,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-22 15:26:40,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-11-22 15:26:40,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:26:40,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 66 conjunts are in the unsatisfiable core [2021-11-22 15:26:40,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:26:40,353 INFO L354 Elim1Store]: treesize reduction 79, result has 27.5 percent of original size [2021-11-22 15:26:40,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 35 [2021-11-22 15:26:40,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:26:40,468 INFO L354 Elim1Store]: treesize reduction 117, result has 12.0 percent of original size [2021-11-22 15:26:40,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 60 treesize of output 62 [2021-11-22 15:26:40,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-22 15:26:41,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:26:41,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 38 [2021-11-22 15:26:41,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:26:41,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:26:41,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:26:41,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 47 [2021-11-22 15:26:42,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:26:42,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:26:42,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:26:42,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:26:42,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:26:42,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:26:42,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 55 [2021-11-22 15:26:42,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:26:42,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:26:42,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:26:42,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:26:42,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:26:42,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:26:42,537 INFO L354 Elim1Store]: treesize reduction 120, result has 23.6 percent of original size [2021-11-22 15:26:42,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 76 treesize of output 71 [2021-11-22 15:27:04,447 WARN L227 SmtUtils]: Spent 11.04s on a formula simplification that was a NOOP. DAG size: 65 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:27:04,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:27:04,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:27:04,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:27:04,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:27:04,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:27:04,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:27:04,586 INFO L354 Elim1Store]: treesize reduction 212, result has 18.5 percent of original size [2021-11-22 15:27:04,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 92 treesize of output 90 [2021-11-22 15:27:15,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:27:15,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:27:15,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:27:15,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:27:15,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:27:15,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:27:16,040 INFO L354 Elim1Store]: treesize reduction 212, result has 18.5 percent of original size [2021-11-22 15:27:16,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 92 treesize of output 90 [2021-11-22 15:27:27,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:27:27,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:27:27,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:27:27,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:27:27,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:27:27,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:27:27,647 INFO L354 Elim1Store]: treesize reduction 212, result has 18.5 percent of original size [2021-11-22 15:27:27,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 92 treesize of output 90 [2021-11-22 15:27:39,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:27:39,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:27:39,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:27:39,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:27:39,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:27:39,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:27:39,197 INFO L354 Elim1Store]: treesize reduction 212, result has 18.5 percent of original size [2021-11-22 15:27:39,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 92 treesize of output 90 [2021-11-22 15:28:09,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:28:09,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:28:09,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:28:09,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:28:09,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:28:09,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:28:09,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:28:10,117 INFO L354 Elim1Store]: treesize reduction 1142, result has 7.5 percent of original size [2021-11-22 15:28:10,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 433 treesize of output 350 [2021-11-22 15:28:10,234 INFO L354 Elim1Store]: treesize reduction 166, result has 15.7 percent of original size [2021-11-22 15:28:10,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 546 treesize of output 434 [2021-11-22 15:28:10,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:28:10,356 INFO L354 Elim1Store]: treesize reduction 301, result has 15.4 percent of original size [2021-11-22 15:28:10,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 528 treesize of output 523 [2021-11-22 15:28:11,645 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 10 proven. 70 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-22 15:28:11,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:28:11,817 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 15:28:11,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 76057 treesize of output 73265 [2021-11-22 15:28:12,574 INFO L354 Elim1Store]: treesize reduction 28, result has 48.1 percent of original size [2021-11-22 15:28:12,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 72385 treesize of output 72371 [2021-11-22 15:28:12,796 INFO L354 Elim1Store]: treesize reduction 45, result has 34.8 percent of original size [2021-11-22 15:28:12,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 72371 treesize of output 72361 [2021-11-22 15:28:13,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72373 treesize of output 72357 [2021-11-22 15:28:13,189 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-22 15:28:13,190 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-22 15:28:13,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-11-22 15:28:13,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412978452] [2021-11-22 15:28:13,190 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-22 15:28:13,192 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-22 15:28:13,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:28:13,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1798, now seen corresponding path program 4 times [2021-11-22 15:28:13,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:28:13,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787851467] [2021-11-22 15:28:13,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:28:13,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:28:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:28:13,199 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 15:28:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 15:28:13,205 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 15:28:13,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:28:13,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-22 15:28:13,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=995, Unknown=5, NotChecked=0, Total=1122 [2021-11-22 15:28:13,256 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. cyclomatic complexity: 3 Second operand has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 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) [2021-11-22 15:28:15,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:28:15,095 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2021-11-22 15:28:15,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-22 15:28:15,096 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 25 transitions. [2021-11-22 15:28:15,097 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-22 15:28:15,097 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 0 states and 0 transitions. [2021-11-22 15:28:15,097 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-11-22 15:28:15,097 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-11-22 15:28:15,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-11-22 15:28:15,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-22 15:28:15,098 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-22 15:28:15,098 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-22 15:28:15,098 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-22 15:28:15,098 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-11-22 15:28:15,099 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-11-22 15:28:15,099 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-22 15:28:15,099 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-11-22 15:28:15,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.11 03:28:15 BoogieIcfgContainer [2021-11-22 15:28:15,107 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-22 15:28:15,108 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-22 15:28:15,108 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-22 15:28:15,108 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-22 15:28:15,109 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:26:25" (3/4) ... [2021-11-22 15:28:15,112 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-22 15:28:15,113 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-22 15:28:15,114 INFO L158 Benchmark]: Toolchain (without parser) took 110376.25ms. Allocated memory was 94.4MB in the beginning and 195.0MB in the end (delta: 100.7MB). Free memory was 54.9MB in the beginning and 67.1MB in the end (delta: -12.2MB). Peak memory consumption was 86.7MB. Max. memory is 16.1GB. [2021-11-22 15:28:15,114 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 94.4MB. Free memory is still 71.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:28:15,115 INFO L158 Benchmark]: CACSL2BoogieTranslator took 277.39ms. Allocated memory is still 94.4MB. Free memory was 54.7MB in the beginning and 65.8MB in the end (delta: -11.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-22 15:28:15,115 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.25ms. Allocated memory is still 94.4MB. Free memory was 65.8MB in the beginning and 64.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:28:15,116 INFO L158 Benchmark]: Boogie Preprocessor took 63.10ms. Allocated memory is still 94.4MB. Free memory was 64.2MB in the beginning and 62.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 15:28:15,116 INFO L158 Benchmark]: RCFGBuilder took 635.40ms. Allocated memory is still 94.4MB. Free memory was 62.5MB in the beginning and 46.9MB in the end (delta: 15.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-22 15:28:15,117 INFO L158 Benchmark]: BuchiAutomizer took 109331.69ms. Allocated memory was 94.4MB in the beginning and 195.0MB in the end (delta: 100.7MB). Free memory was 46.6MB in the beginning and 67.1MB in the end (delta: -20.4MB). Peak memory consumption was 80.9MB. Max. memory is 16.1GB. [2021-11-22 15:28:15,117 INFO L158 Benchmark]: Witness Printer took 5.12ms. Allocated memory is still 195.0MB. Free memory is still 67.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:28:15,120 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 94.4MB. Free memory is still 71.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 277.39ms. Allocated memory is still 94.4MB. Free memory was 54.7MB in the beginning and 65.8MB in the end (delta: -11.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.25ms. Allocated memory is still 94.4MB. Free memory was 65.8MB in the beginning and 64.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 63.10ms. Allocated memory is still 94.4MB. Free memory was 64.2MB in the beginning and 62.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 635.40ms. Allocated memory is still 94.4MB. Free memory was 62.5MB in the beginning and 46.9MB in the end (delta: 15.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * BuchiAutomizer took 109331.69ms. Allocated memory was 94.4MB in the beginning and 195.0MB in the end (delta: 100.7MB). Free memory was 46.6MB in the beginning and 67.1MB in the end (delta: -20.4MB). Peak memory consumption was 80.9MB. Max. memory is 16.1GB. * Witness Printer took 5.12ms. Allocated memory is still 195.0MB. Free memory is still 67.1MB. 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 5 terminating modules (4 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -8 * j + 19 * unknown-#length-unknown[a] and consists of 5 locations. 4 modules have a trivial ranking function, the largest among these consists of 19 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 109.2s and 6 iterations. TraceHistogramMax:10. Analysis of lassos took 106.8s. Construction of modules took 0.7s. Büchi inclusion checks took 1.4s. Highest rank in rank-based complementation 3. Minimization of det autom 5. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 27 states and ocurred in iteration 4. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 38 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 37 mSDsluCounter, 85 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 54 mSDsCounter, 35 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 286 IncrementalHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 35 mSolverCounterUnsat, 31 mSDtfsCounter, 286 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU4 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital332 mio100 ax100 hnf100 lsp96 ukn46 mio100 lsp37 div100 bol100 ite100 ukn100 eq161 hnf92 smp100 dnf100 smp100 tf100 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 40ms VariablesStem: 1 VariablesLoop: 0 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! [2021-11-22 15:28:15,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-22 15:28:15,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-22 15:28:15,579 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-22 15:28:15,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982cab90-21ca-42aa-9539-3fc75e0ee2c2/bin/uautomizer-w2VwFs6gM0/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