./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-acceleration/phases_2-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d8b0a6-3784-4a6f-b7cd-74ca3246bead/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d8b0a6-3784-4a6f-b7cd-74ca3246bead/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d8b0a6-3784-4a6f-b7cd-74ca3246bead/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d8b0a6-3784-4a6f-b7cd-74ca3246bead/bin/uautomizer-tPACEb0tL8/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-acceleration/phases_2-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d8b0a6-3784-4a6f-b7cd-74ca3246bead/bin/uautomizer-tPACEb0tL8/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d8b0a6-3784-4a6f-b7cd-74ca3246bead/bin/uautomizer-tPACEb0tL8 --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 40774f15dea268138f2179cc2f832c9729515e75ef9c65e50e7b347c749bb02c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 10:59:40,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 10:59:40,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 10:59:40,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 10:59:40,581 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 10:59:40,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 10:59:40,591 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 10:59:40,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 10:59:40,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 10:59:40,607 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 10:59:40,609 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 10:59:40,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 10:59:40,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 10:59:40,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 10:59:40,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 10:59:40,619 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 10:59:40,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 10:59:40,623 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 10:59:40,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 10:59:40,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 10:59:40,636 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 10:59:40,637 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 10:59:40,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 10:59:40,639 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 10:59:40,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 10:59:40,644 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 10:59:40,644 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 10:59:40,645 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 10:59:40,646 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 10:59:40,647 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 10:59:40,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 10:59:40,648 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 10:59:40,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 10:59:40,650 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 10:59:40,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 10:59:40,658 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 10:59:40,659 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 10:59:40,659 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 10:59:40,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 10:59:40,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 10:59:40,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 10:59:40,662 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d8b0a6-3784-4a6f-b7cd-74ca3246bead/bin/uautomizer-tPACEb0tL8/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-11-16 10:59:40,714 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 10:59:40,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 10:59:40,715 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 10:59:40,715 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 10:59:40,717 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 10:59:40,717 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 10:59:40,717 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 10:59:40,718 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-16 10:59:40,718 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-16 10:59:40,718 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-16 10:59:40,719 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-16 10:59:40,720 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-16 10:59:40,720 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-16 10:59:40,720 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 10:59:40,720 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 10:59:40,721 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 10:59:40,721 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 10:59:40,721 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 10:59:40,721 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 10:59:40,722 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-16 10:59:40,722 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-16 10:59:40,722 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-16 10:59:40,722 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 10:59:40,722 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 10:59:40,723 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-16 10:59:40,724 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 10:59:40,724 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-16 10:59:40,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 10:59:40,724 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 10:59:40,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 10:59:40,725 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 10:59:40,726 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-16 10:59:40,727 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_05d8b0a6-3784-4a6f-b7cd-74ca3246bead/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d8b0a6-3784-4a6f-b7cd-74ca3246bead/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40774f15dea268138f2179cc2f832c9729515e75ef9c65e50e7b347c749bb02c [2022-11-16 10:59:41,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 10:59:41,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 10:59:41,163 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 10:59:41,165 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 10:59:41,166 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 10:59:41,167 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d8b0a6-3784-4a6f-b7cd-74ca3246bead/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/loop-acceleration/phases_2-1.c [2022-11-16 10:59:41,283 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d8b0a6-3784-4a6f-b7cd-74ca3246bead/bin/uautomizer-tPACEb0tL8/data/797b879a1/ae9207ca48db4daba243baabb53f3f03/FLAG60d5fefbb [2022-11-16 10:59:41,913 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 10:59:41,913 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d8b0a6-3784-4a6f-b7cd-74ca3246bead/sv-benchmarks/c/loop-acceleration/phases_2-1.c [2022-11-16 10:59:41,921 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d8b0a6-3784-4a6f-b7cd-74ca3246bead/bin/uautomizer-tPACEb0tL8/data/797b879a1/ae9207ca48db4daba243baabb53f3f03/FLAG60d5fefbb [2022-11-16 10:59:41,936 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d8b0a6-3784-4a6f-b7cd-74ca3246bead/bin/uautomizer-tPACEb0tL8/data/797b879a1/ae9207ca48db4daba243baabb53f3f03 [2022-11-16 10:59:41,939 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 10:59:41,940 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 10:59:41,942 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 10:59:41,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 10:59:41,947 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 10:59:41,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:59:41" (1/1) ... [2022-11-16 10:59:41,950 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c14e507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:41, skipping insertion in model container [2022-11-16 10:59:41,950 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:59:41" (1/1) ... [2022-11-16 10:59:41,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 10:59:41,974 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 10:59:42,200 WARN L229 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_05d8b0a6-3784-4a6f-b7cd-74ca3246bead/sv-benchmarks/c/loop-acceleration/phases_2-1.c[459,472] [2022-11-16 10:59:42,210 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:59:42,221 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 10:59:42,237 WARN L229 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_05d8b0a6-3784-4a6f-b7cd-74ca3246bead/sv-benchmarks/c/loop-acceleration/phases_2-1.c[459,472] [2022-11-16 10:59:42,240 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:59:42,258 INFO L208 MainTranslator]: Completed translation [2022-11-16 10:59:42,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:42 WrapperNode [2022-11-16 10:59:42,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 10:59:42,260 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 10:59:42,260 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 10:59:42,260 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 10:59:42,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:42" (1/1) ... [2022-11-16 10:59:42,278 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:42" (1/1) ... [2022-11-16 10:59:42,298 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 32 [2022-11-16 10:59:42,299 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 10:59:42,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 10:59:42,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 10:59:42,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 10:59:42,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:42" (1/1) ... [2022-11-16 10:59:42,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:42" (1/1) ... [2022-11-16 10:59:42,312 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:42" (1/1) ... [2022-11-16 10:59:42,312 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:42" (1/1) ... [2022-11-16 10:59:42,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:42" (1/1) ... [2022-11-16 10:59:42,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:42" (1/1) ... [2022-11-16 10:59:42,321 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:42" (1/1) ... [2022-11-16 10:59:42,322 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:42" (1/1) ... [2022-11-16 10:59:42,323 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 10:59:42,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 10:59:42,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 10:59:42,324 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 10:59:42,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:42" (1/1) ... [2022-11-16 10:59:42,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 10:59:42,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d8b0a6-3784-4a6f-b7cd-74ca3246bead/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:59:42,385 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d8b0a6-3784-4a6f-b7cd-74ca3246bead/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 10:59:42,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d8b0a6-3784-4a6f-b7cd-74ca3246bead/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-16 10:59:42,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 10:59:42,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 10:59:42,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 10:59:42,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 10:59:42,530 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 10:59:42,533 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 10:59:42,760 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 10:59:42,779 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 10:59:42,780 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 10:59:42,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:59:42 BoogieIcfgContainer [2022-11-16 10:59:42,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 10:59:42,784 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-16 10:59:42,784 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-16 10:59:42,791 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-16 10:59:42,792 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-16 10:59:42,792 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 16.11 10:59:41" (1/3) ... [2022-11-16 10:59:42,793 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@61d0abfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.11 10:59:42, skipping insertion in model container [2022-11-16 10:59:42,793 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-16 10:59:42,794 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:59:42" (2/3) ... [2022-11-16 10:59:42,794 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@61d0abfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.11 10:59:42, skipping insertion in model container [2022-11-16 10:59:42,794 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-16 10:59:42,794 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:59:42" (3/3) ... [2022-11-16 10:59:42,796 INFO L332 chiAutomizerObserver]: Analyzing ICFG phases_2-1.c [2022-11-16 10:59:42,884 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-16 10:59:42,884 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-16 10:59:42,884 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-16 10:59:42,885 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-16 10:59:42,885 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-16 10:59:42,885 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-16 10:59:42,885 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-16 10:59:42,885 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-16 10:59:42,891 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 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) [2022-11-16 10:59:42,913 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-16 10:59:42,913 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 10:59:42,913 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 10:59:42,920 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-16 10:59:42,920 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-16 10:59:42,920 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-16 10:59:42,921 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 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) [2022-11-16 10:59:42,922 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-16 10:59:42,922 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 10:59:42,922 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 10:59:42,923 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-16 10:59:42,923 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-16 10:59:42,933 INFO L748 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(13, 2);call #Ultimate.allocInit(12, 3); 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~post5#1, main_~x~0#1, main_~y~0#1;main_~x~0#1 := 1;main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 7#L21true assume !!(main_~y~0#1 % 4294967296 > 0); 5#L24-2true [2022-11-16 10:59:42,933 INFO L750 eck$LassoCheckResult]: Loop: 5#L24-2true assume !!(main_~x~0#1 % 4294967296 < main_~y~0#1 % 4294967296); 9#L24true assume main_~x~0#1 % 4294967296 < (if main_~y~0#1 % 4294967296 < 0 && 0 != main_~y~0#1 % 4294967296 % (main_~x~0#1 % 4294967296) then (if main_~x~0#1 % 4294967296 < 0 then main_~y~0#1 % 4294967296 / (main_~x~0#1 % 4294967296) - 1 else 1 + main_~y~0#1 % 4294967296 / (main_~x~0#1 % 4294967296)) else main_~y~0#1 % 4294967296 / (main_~x~0#1 % 4294967296)) % 4294967296;main_~x~0#1 := main_~x~0#1 * main_~x~0#1; 5#L24-2true [2022-11-16 10:59:42,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:59:42,944 INFO L85 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times [2022-11-16 10:59:42,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:59:42,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362129284] [2022-11-16 10:59:42,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:59:42,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:59:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 10:59:43,065 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 10:59:43,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 10:59:43,099 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 10:59:43,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:59:43,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1476, now seen corresponding path program 1 times [2022-11-16 10:59:43,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:59:43,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255946443] [2022-11-16 10:59:43,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:59:43,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:59:43,115 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:59:43,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1900887946] [2022-11-16 10:59:43,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:59:43,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:59:43,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d8b0a6-3784-4a6f-b7cd-74ca3246bead/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:59:43,122 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d8b0a6-3784-4a6f-b7cd-74ca3246bead/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:59:43,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d8b0a6-3784-4a6f-b7cd-74ca3246bead/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 10:59:43,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 10:59:43,196 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 10:59:43,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 10:59:43,207 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 10:59:43,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:59:43,209 INFO L85 PathProgramCache]: Analyzing trace with hash 28695975, now seen corresponding path program 1 times [2022-11-16 10:59:43,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:59:43,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131741531] [2022-11-16 10:59:43,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:59:43,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:59:43,225 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 10:59:43,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [153442249] [2022-11-16 10:59:43,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:59:43,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:59:43,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d8b0a6-3784-4a6f-b7cd-74ca3246bead/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:59:43,229 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d8b0a6-3784-4a6f-b7cd-74ca3246bead/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:59:43,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d8b0a6-3784-4a6f-b7cd-74ca3246bead/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 10:59:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 10:59:43,364 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 10:59:43,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 10:59:43,381 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 10:59:43,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 10:59:43,807 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 10:59:43,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 10:59:43,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 16.11 10:59:43 BoogieIcfgContainer [2022-11-16 10:59:43,857 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-16 10:59:43,860 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 10:59:43,861 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 10:59:43,861 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 10:59:43,861 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:59:42" (3/4) ... [2022-11-16 10:59:43,864 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-11-16 10:59:43,917 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d8b0a6-3784-4a6f-b7cd-74ca3246bead/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 10:59:43,917 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 10:59:43,921 INFO L158 Benchmark]: Toolchain (without parser) took 1978.30ms. Allocated memory is still 132.1MB. Free memory was 97.9MB in the beginning and 63.5MB in the end (delta: 34.5MB). Peak memory consumption was 32.7MB. Max. memory is 16.1GB. [2022-11-16 10:59:43,922 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 92.3MB. Free memory was 65.3MB in the beginning and 65.2MB in the end (delta: 29.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 10:59:43,923 INFO L158 Benchmark]: CACSL2BoogieTranslator took 316.55ms. Allocated memory is still 132.1MB. Free memory was 97.6MB in the beginning and 107.9MB in the end (delta: -10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 10:59:43,927 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.95ms. Allocated memory is still 132.1MB. Free memory was 107.9MB in the beginning and 106.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 10:59:43,927 INFO L158 Benchmark]: Boogie Preprocessor took 23.94ms. Allocated memory is still 132.1MB. Free memory was 106.7MB in the beginning and 105.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 10:59:43,931 INFO L158 Benchmark]: RCFGBuilder took 458.81ms. Allocated memory is still 132.1MB. Free memory was 105.4MB in the beginning and 95.8MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 10:59:43,932 INFO L158 Benchmark]: BuchiAutomizer took 1074.38ms. Allocated memory is still 132.1MB. Free memory was 95.8MB in the beginning and 65.2MB in the end (delta: 30.6MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-11-16 10:59:43,932 INFO L158 Benchmark]: Witness Printer took 57.21ms. Allocated memory is still 132.1MB. Free memory was 65.2MB in the beginning and 63.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 10:59:43,937 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 92.3MB. Free memory was 65.3MB in the beginning and 65.2MB in the end (delta: 29.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 316.55ms. Allocated memory is still 132.1MB. Free memory was 97.6MB in the beginning and 107.9MB in the end (delta: -10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.95ms. Allocated memory is still 132.1MB. Free memory was 107.9MB in the beginning and 106.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.94ms. Allocated memory is still 132.1MB. Free memory was 106.7MB in the beginning and 105.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 458.81ms. Allocated memory is still 132.1MB. Free memory was 105.4MB in the beginning and 95.8MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1074.38ms. Allocated memory is still 132.1MB. Free memory was 95.8MB in the beginning and 65.2MB in the end (delta: 30.6MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Witness Printer took 57.21ms. Allocated memory is still 132.1MB. Free memory was 65.2MB in the beginning and 63.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.9s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 23]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L18] unsigned int x = 1; [L19] unsigned int y = __VERIFIER_nondet_uint(); [L21] COND FALSE !(!(y > 0)) VAL [x=1, y=2] Loop: [L23] COND TRUE x < y [L24] COND TRUE x < y / x [L25] x *= x End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 23]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L18] unsigned int x = 1; [L19] unsigned int y = __VERIFIER_nondet_uint(); [L21] COND FALSE !(!(y > 0)) VAL [x=1, y=2] Loop: [L23] COND TRUE x < y [L24] COND TRUE x < y / x [L25] x *= x End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-11-16 10:59:43,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d8b0a6-3784-4a6f-b7cd-74ca3246bead/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 10:59:44,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d8b0a6-3784-4a6f-b7cd-74ca3246bead/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 10:59:44,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05d8b0a6-3784-4a6f-b7cd-74ca3246bead/bin/uautomizer-tPACEb0tL8/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)