./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/Binary_Search-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92f8e36-e85c-4524-866f-c0bd5d89f753/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92f8e36-e85c-4524-866f-c0bd5d89f753/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92f8e36-e85c-4524-866f-c0bd5d89f753/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92f8e36-e85c-4524-866f-c0bd5d89f753/bin/uautomizer-J5u9QxTXDZ/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Binary_Search-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92f8e36-e85c-4524-866f-c0bd5d89f753/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92f8e36-e85c-4524-866f-c0bd5d89f753/bin/uautomizer-J5u9QxTXDZ --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 64bit --witnessprinter.graph.data.programhash c62b8cd14983fa4dda29102c5113315628115eea4aa89f3549fa0abedadf594b --- 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-dbf71c6-m [2022-10-17 10:26:42,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:26:42,054 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:26:42,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:26:42,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:26:42,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:26:42,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:26:42,117 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:26:42,120 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:26:42,122 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:26:42,123 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:26:42,125 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:26:42,126 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:26:42,127 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:26:42,129 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:26:42,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:26:42,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:26:42,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:26:42,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:26:42,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:26:42,142 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:26:42,143 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:26:42,145 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:26:42,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:26:42,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:26:42,153 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:26:42,153 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:26:42,154 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:26:42,155 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:26:42,156 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:26:42,157 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:26:42,158 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:26:42,159 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:26:42,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:26:42,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:26:42,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:26:42,163 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:26:42,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:26:42,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:26:42,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:26:42,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:26:42,167 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92f8e36-e85c-4524-866f-c0bd5d89f753/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-10-17 10:26:42,209 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:26:42,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:26:42,210 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:26:42,210 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:26:42,211 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:26:42,211 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:26:42,211 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:26:42,212 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-10-17 10:26:42,212 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-10-17 10:26:42,212 INFO L138 SettingsManager]: * Use old map elimination=false [2022-10-17 10:26:42,212 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-10-17 10:26:42,212 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-10-17 10:26:42,213 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-10-17 10:26:42,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:26:42,213 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 10:26:42,213 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:26:42,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:26:42,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-10-17 10:26:42,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-10-17 10:26:42,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-10-17 10:26:42,221 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:26:42,222 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-10-17 10:26:42,222 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:26:42,222 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-10-17 10:26:42,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:26:42,222 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:26:42,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:26:42,223 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:26:42,224 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-10-17 10:26:42,224 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_e92f8e36-e85c-4524-866f-c0bd5d89f753/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92f8e36-e85c-4524-866f-c0bd5d89f753/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c62b8cd14983fa4dda29102c5113315628115eea4aa89f3549fa0abedadf594b [2022-10-17 10:26:42,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:26:42,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:26:42,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:26:42,510 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:26:42,521 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:26:42,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92f8e36-e85c-4524-866f-c0bd5d89f753/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/termination-crafted/Binary_Search-2.c [2022-10-17 10:26:42,608 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92f8e36-e85c-4524-866f-c0bd5d89f753/bin/uautomizer-J5u9QxTXDZ/data/bd99dc708/9c258a1c1785426a8d3295ad0ad585d3/FLAG1e78f196e [2022-10-17 10:26:43,094 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:26:43,095 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92f8e36-e85c-4524-866f-c0bd5d89f753/sv-benchmarks/c/termination-crafted/Binary_Search-2.c [2022-10-17 10:26:43,101 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92f8e36-e85c-4524-866f-c0bd5d89f753/bin/uautomizer-J5u9QxTXDZ/data/bd99dc708/9c258a1c1785426a8d3295ad0ad585d3/FLAG1e78f196e [2022-10-17 10:26:43,473 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92f8e36-e85c-4524-866f-c0bd5d89f753/bin/uautomizer-J5u9QxTXDZ/data/bd99dc708/9c258a1c1785426a8d3295ad0ad585d3 [2022-10-17 10:26:43,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:26:43,480 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:26:43,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:26:43,483 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:26:43,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:26:43,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:26:43" (1/1) ... [2022-10-17 10:26:43,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@164ace2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:26:43, skipping insertion in model container [2022-10-17 10:26:43,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:26:43" (1/1) ... [2022-10-17 10:26:43,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:26:43,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:26:43,671 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:26:43,675 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:26:43,710 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:26:43,723 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:26:43,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:26:43 WrapperNode [2022-10-17 10:26:43,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:26:43,726 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:26:43,726 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:26:43,726 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:26:43,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:26:43" (1/1) ... [2022-10-17 10:26:43,743 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:26:43" (1/1) ... [2022-10-17 10:26:43,764 INFO L138 Inliner]: procedures = 5, calls = 5, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 14 [2022-10-17 10:26:43,764 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:26:43,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:26:43,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:26:43,766 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:26:43,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:26:43" (1/1) ... [2022-10-17 10:26:43,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:26:43" (1/1) ... [2022-10-17 10:26:43,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:26:43" (1/1) ... [2022-10-17 10:26:43,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:26:43" (1/1) ... [2022-10-17 10:26:43,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:26:43" (1/1) ... [2022-10-17 10:26:43,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:26:43" (1/1) ... [2022-10-17 10:26:43,791 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:26:43" (1/1) ... [2022-10-17 10:26:43,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:26:43" (1/1) ... [2022-10-17 10:26:43,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:26:43,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:26:43,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:26:43,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:26:43,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:26:43" (1/1) ... [2022-10-17 10:26:43,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:26:43,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92f8e36-e85c-4524-866f-c0bd5d89f753/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:26:43,837 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92f8e36-e85c-4524-866f-c0bd5d89f753/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:26:43,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92f8e36-e85c-4524-866f-c0bd5d89f753/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-10-17 10:26:43,897 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2022-10-17 10:26:43,897 INFO L138 BoogieDeclarations]: Found implementation of procedure bsearch [2022-10-17 10:26:43,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:26:43,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:26:43,965 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:26:43,967 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:26:44,118 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:26:44,126 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:26:44,127 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:26:44,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:26:44 BoogieIcfgContainer [2022-10-17 10:26:44,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:26:44,130 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-10-17 10:26:44,130 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-10-17 10:26:44,136 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-10-17 10:26:44,137 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 10:26:44,138 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 17.10 10:26:43" (1/3) ... [2022-10-17 10:26:44,139 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4d0a7cda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.10 10:26:44, skipping insertion in model container [2022-10-17 10:26:44,139 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 10:26:44,139 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:26:43" (2/3) ... [2022-10-17 10:26:44,139 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4d0a7cda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.10 10:26:44, skipping insertion in model container [2022-10-17 10:26:44,139 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 10:26:44,139 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:26:44" (3/3) ... [2022-10-17 10:26:44,141 INFO L332 chiAutomizerObserver]: Analyzing ICFG Binary_Search-2.c [2022-10-17 10:26:44,197 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-10-17 10:26:44,197 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-10-17 10:26:44,197 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-10-17 10:26:44,198 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-10-17 10:26:44,198 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-10-17 10:26:44,198 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-10-17 10:26:44,198 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-10-17 10:26:44,198 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-10-17 10:26:44,203 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-17 10:26:44,226 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-10-17 10:26:44,227 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:26:44,227 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:26:44,234 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-10-17 10:26:44,234 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-10-17 10:26:44,234 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-10-17 10:26:44,234 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-17 10:26:44,237 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-10-17 10:26:44,237 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:26:44,237 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:26:44,238 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-10-17 10:26:44,238 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-10-17 10:26:44,246 INFO L748 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet3#1, main_#t~nondet4#1, main_#t~ret5#1, main_~x~0#1, main_~y~0#1;main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1;main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 10#L22true assume !!(-1073741823 <= main_~x~0#1 && main_~x~0#1 <= 1073741823); 15#L23true assume !!(-1073741823 <= main_~y~0#1 && main_~y~0#1 <= 1073741823); 18#L24true call main_#t~ret5#1 := bsearch(main_~x~0#1, main_~y~0#1);< 5#bsearchENTRYtrue [2022-10-17 10:26:44,247 INFO L750 eck$LassoCheckResult]: Loop: 5#bsearchENTRYtrue ~i := #in~i;~j := #in~j; 16#L10true assume !(~i >= ~j);~mid~0 := (if ~i + ~j < 0 && 0 != (~i + ~j) % 2 then 1 + (~i + ~j) / 2 else (~i + ~j) / 2); 17#L12true assume 0 != #t~nondet0;havoc #t~nondet0; 9#L13true call #t~ret1 := bsearch(~i, ~mid~0);< 5#bsearchENTRYtrue [2022-10-17 10:26:44,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:44,254 INFO L85 PathProgramCache]: Analyzing trace with hash 42056124, now seen corresponding path program 1 times [2022-10-17 10:26:44,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:26:44,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709700126] [2022-10-17 10:26:44,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:26:44,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:26:44,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:26:44,348 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:26:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:26:44,373 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:26:44,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:44,377 INFO L85 PathProgramCache]: Analyzing trace with hash 927614, now seen corresponding path program 1 times [2022-10-17 10:26:44,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:26:44,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108430612] [2022-10-17 10:26:44,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:26:44,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:26:44,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:26:44,401 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:26:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:26:44,416 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:26:44,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:26:44,418 INFO L85 PathProgramCache]: Analyzing trace with hash 324438969, now seen corresponding path program 1 times [2022-10-17 10:26:44,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:26:44,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170252770] [2022-10-17 10:26:44,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:26:44,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:26:44,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:26:44,439 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:26:44,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:26:44,463 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:26:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:26:45,117 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:26:45,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:26:45,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.10 10:26:45 BoogieIcfgContainer [2022-10-17 10:26:45,161 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-10-17 10:26:45,161 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 10:26:45,162 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 10:26:45,162 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 10:26:45,162 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:26:44" (3/4) ... [2022-10-17 10:26:45,165 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-10-17 10:26:45,200 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92f8e36-e85c-4524-866f-c0bd5d89f753/bin/uautomizer-J5u9QxTXDZ/witness.graphml [2022-10-17 10:26:45,200 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 10:26:45,202 INFO L158 Benchmark]: Toolchain (without parser) took 1721.16ms. Allocated memory is still 109.1MB. Free memory was 62.8MB in the beginning and 32.8MB in the end (delta: 29.9MB). Peak memory consumption was 27.0MB. Max. memory is 16.1GB. [2022-10-17 10:26:45,203 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 109.1MB. Free memory is still 79.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:26:45,204 INFO L158 Benchmark]: CACSL2BoogieTranslator took 241.93ms. Allocated memory is still 109.1MB. Free memory was 62.5MB in the beginning and 84.3MB in the end (delta: -21.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-10-17 10:26:45,205 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.20ms. Allocated memory is still 109.1MB. Free memory was 84.3MB in the beginning and 82.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:26:45,205 INFO L158 Benchmark]: Boogie Preprocessor took 28.00ms. Allocated memory is still 109.1MB. Free memory was 82.9MB in the beginning and 82.0MB in the end (delta: 901.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:26:45,206 INFO L158 Benchmark]: RCFGBuilder took 334.08ms. Allocated memory is still 109.1MB. Free memory was 82.0MB in the beginning and 72.7MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 10:26:45,207 INFO L158 Benchmark]: BuchiAutomizer took 1030.74ms. Allocated memory is still 109.1MB. Free memory was 72.7MB in the beginning and 34.3MB in the end (delta: 38.3MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2022-10-17 10:26:45,208 INFO L158 Benchmark]: Witness Printer took 39.20ms. Allocated memory is still 109.1MB. Free memory was 34.3MB in the beginning and 32.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:26:45,212 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 109.1MB. Free memory is still 79.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 241.93ms. Allocated memory is still 109.1MB. Free memory was 62.5MB in the beginning and 84.3MB in the end (delta: -21.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.20ms. Allocated memory is still 109.1MB. Free memory was 84.3MB in the beginning and 82.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.00ms. Allocated memory is still 109.1MB. Free memory was 82.9MB in the beginning and 82.0MB in the end (delta: 901.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 334.08ms. Allocated memory is still 109.1MB. Free memory was 82.0MB in the beginning and 72.7MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1030.74ms. Allocated memory is still 109.1MB. Free memory was 72.7MB in the beginning and 34.3MB in the end (delta: 38.3MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * Witness Printer took 39.20ms. Allocated memory is still 109.1MB. Free memory was 34.3MB in the beginning and 32.8MB in the end (delta: 1.5MB). 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 Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.9s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.8s. 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: 8]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L19] int x = __VERIFIER_nondet_int(); [L20] int y = __VERIFIER_nondet_int(); [L22] COND FALSE !(!(-1073741823<=x && x<=1073741823)) VAL [x=-1] [L23] COND FALSE !(!(-1073741823<=y && y<=1073741823)) VAL [x=-1, y=0] [L24] CALL bsearch(x, y) VAL [\old(i)=-1, \old(j)=0] Loop: [L10] COND FALSE !(i>=j) [L11] int mid = (i+j)/2; [L12] COND TRUE __VERIFIER_nondet_int() [L13] CALL bsearch(i,mid) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 8]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L19] int x = __VERIFIER_nondet_int(); [L20] int y = __VERIFIER_nondet_int(); [L22] COND FALSE !(!(-1073741823<=x && x<=1073741823)) VAL [x=-1] [L23] COND FALSE !(!(-1073741823<=y && y<=1073741823)) VAL [x=-1, y=0] [L24] CALL bsearch(x, y) VAL [\old(i)=-1, \old(j)=0] Loop: [L10] COND FALSE !(i>=j) [L11] int mid = (i+j)/2; [L12] COND TRUE __VERIFIER_nondet_int() [L13] CALL bsearch(i,mid) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-10-17 10:26:45,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e92f8e36-e85c-4524-866f-c0bd5d89f753/bin/uautomizer-J5u9QxTXDZ/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)