./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/Division-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 5e519f3a 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_ae9471bb-7769-41f1-b1e9-fa3fa25638f3/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae9471bb-7769-41f1-b1e9-fa3fa25638f3/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae9471bb-7769-41f1-b1e9-fa3fa25638f3/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae9471bb-7769-41f1-b1e9-fa3fa25638f3/bin/uautomizer-Dbtcem3rbc/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Division-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae9471bb-7769-41f1-b1e9-fa3fa25638f3/bin/uautomizer-Dbtcem3rbc/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae9471bb-7769-41f1-b1e9-fa3fa25638f3/bin/uautomizer-Dbtcem3rbc --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 bcd985be4d5b056143625ede780ed1bdcfd1a69390fda6644aa25539fa51e5a7 --- 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-5e519f3 [2022-11-02 20:42:23,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:42:23,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:42:23,346 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:42:23,347 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:42:23,348 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:42:23,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:42:23,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:42:23,354 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:42:23,355 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:42:23,356 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:42:23,358 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:42:23,359 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:42:23,360 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:42:23,361 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:42:23,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:42:23,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:42:23,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:42:23,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:42:23,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:42:23,372 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:42:23,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:42:23,376 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:42:23,377 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:42:23,382 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:42:23,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:42:23,383 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:42:23,385 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:42:23,385 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:42:23,387 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:42:23,387 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:42:23,388 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:42:23,390 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:42:23,391 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:42:23,392 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:42:23,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:42:23,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:42:23,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:42:23,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:42:23,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:42:23,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:42:23,398 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae9471bb-7769-41f1-b1e9-fa3fa25638f3/bin/uautomizer-Dbtcem3rbc/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-02 20:42:23,426 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:42:23,427 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:42:23,427 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:42:23,427 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:42:23,429 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:42:23,429 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:42:23,429 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:42:23,430 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-02 20:42:23,430 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-02 20:42:23,430 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-02 20:42:23,431 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-02 20:42:23,431 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-02 20:42:23,431 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-02 20:42:23,431 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:42:23,432 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:42:23,432 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:42:23,432 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:42:23,432 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-02 20:42:23,433 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-02 20:42:23,433 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-02 20:42:23,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:42:23,434 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-02 20:42:23,434 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:42:23,434 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-02 20:42:23,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:42:23,435 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:42:23,435 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:42:23,435 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:42:23,437 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-02 20:42:23,437 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_ae9471bb-7769-41f1-b1e9-fa3fa25638f3/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae9471bb-7769-41f1-b1e9-fa3fa25638f3/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcd985be4d5b056143625ede780ed1bdcfd1a69390fda6644aa25539fa51e5a7 [2022-11-02 20:42:23,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:42:23,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:42:23,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:42:23,840 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:42:23,841 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:42:23,843 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae9471bb-7769-41f1-b1e9-fa3fa25638f3/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/termination-crafted/Division-2.c [2022-11-02 20:42:23,930 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae9471bb-7769-41f1-b1e9-fa3fa25638f3/bin/uautomizer-Dbtcem3rbc/data/58307ee5b/5cafe8ab104944708e19c2cf5a081584/FLAGd0138c3f5 [2022-11-02 20:42:24,563 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:42:24,564 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae9471bb-7769-41f1-b1e9-fa3fa25638f3/sv-benchmarks/c/termination-crafted/Division-2.c [2022-11-02 20:42:24,570 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae9471bb-7769-41f1-b1e9-fa3fa25638f3/bin/uautomizer-Dbtcem3rbc/data/58307ee5b/5cafe8ab104944708e19c2cf5a081584/FLAGd0138c3f5 [2022-11-02 20:42:24,921 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae9471bb-7769-41f1-b1e9-fa3fa25638f3/bin/uautomizer-Dbtcem3rbc/data/58307ee5b/5cafe8ab104944708e19c2cf5a081584 [2022-11-02 20:42:24,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:42:24,925 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:42:24,928 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:42:24,928 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:42:24,933 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:42:24,934 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:42:24" (1/1) ... [2022-11-02 20:42:24,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25dbdaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:24, skipping insertion in model container [2022-11-02 20:42:24,936 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:42:24" (1/1) ... [2022-11-02 20:42:24,946 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:42:24,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:42:25,152 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:42:25,159 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:42:25,176 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:42:25,191 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:42:25,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:25 WrapperNode [2022-11-02 20:42:25,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:42:25,193 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:42:25,194 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:42:25,194 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:42:25,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:25" (1/1) ... [2022-11-02 20:42:25,213 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:25" (1/1) ... [2022-11-02 20:42:25,239 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 11 [2022-11-02 20:42:25,240 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:42:25,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:42:25,242 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:42:25,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:42:25,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:25" (1/1) ... [2022-11-02 20:42:25,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:25" (1/1) ... [2022-11-02 20:42:25,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:25" (1/1) ... [2022-11-02 20:42:25,255 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:25" (1/1) ... [2022-11-02 20:42:25,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:25" (1/1) ... [2022-11-02 20:42:25,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:25" (1/1) ... [2022-11-02 20:42:25,264 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:25" (1/1) ... [2022-11-02 20:42:25,265 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:25" (1/1) ... [2022-11-02 20:42:25,267 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:42:25,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:42:25,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:42:25,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:42:25,272 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:25" (1/1) ... [2022-11-02 20:42:25,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:42:25,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae9471bb-7769-41f1-b1e9-fa3fa25638f3/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:42:25,327 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae9471bb-7769-41f1-b1e9-fa3fa25638f3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:42:25,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae9471bb-7769-41f1-b1e9-fa3fa25638f3/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-02 20:42:25,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:42:25,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:42:25,443 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:42:25,446 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:42:25,568 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:42:25,580 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:42:25,580 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:42:25,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:42:25 BoogieIcfgContainer [2022-11-02 20:42:25,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:42:25,587 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-02 20:42:25,588 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-02 20:42:25,593 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-02 20:42:25,594 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 20:42:25,594 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 02.11 08:42:24" (1/3) ... [2022-11-02 20:42:25,595 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@75b7dbe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 08:42:25, skipping insertion in model container [2022-11-02 20:42:25,595 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 20:42:25,596 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:25" (2/3) ... [2022-11-02 20:42:25,598 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@75b7dbe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 08:42:25, skipping insertion in model container [2022-11-02 20:42:25,600 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 20:42:25,600 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:42:25" (3/3) ... [2022-11-02 20:42:25,602 INFO L332 chiAutomizerObserver]: Analyzing ICFG Division-2.c [2022-11-02 20:42:25,688 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-02 20:42:25,688 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-02 20:42:25,688 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-02 20:42:25,688 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-02 20:42:25,689 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-02 20:42:25,689 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-02 20:42:25,689 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-02 20:42:25,690 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-02 20:42:25,696 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:25,723 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-11-02 20:42:25,723 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:42:25,723 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:42:25,730 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-02 20:42:25,730 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-11-02 20:42:25,730 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-02 20:42:25,731 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:25,732 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-11-02 20:42:25,736 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:42:25,736 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:42:25,736 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-02 20:42:25,737 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-11-02 20:42:25,746 INFO L748 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~y~0#1;main_~y~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 6#L14-2true [2022-11-02 20:42:25,747 INFO L750 eck$LassoCheckResult]: Loop: 6#L14-2true assume !!(main_~y~0#1 >= 0 && main_~y~0#1 <= 10);main_~y~0#1 := (if 1 + 2 * main_~y~0#1 < 0 && 0 != (1 + 2 * main_~y~0#1) % 2 then 1 + (1 + 2 * main_~y~0#1) / 2 else (1 + 2 * main_~y~0#1) / 2); 6#L14-2true [2022-11-02 20:42:25,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:25,754 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-11-02 20:42:25,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:25,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892990453] [2022-11-02 20:42:25,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:25,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:25,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:42:25,868 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:42:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:42:25,904 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:42:25,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:25,911 INFO L85 PathProgramCache]: Analyzing trace with hash 42, now seen corresponding path program 1 times [2022-11-02 20:42:25,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:25,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048691127] [2022-11-02 20:42:25,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:25,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:25,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:42:25,954 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:42:25,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:42:25,976 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:42:25,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:25,990 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2022-11-02 20:42:25,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:25,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812629770] [2022-11-02 20:42:25,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:25,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:42:26,002 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:42:26,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:42:26,013 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:42:26,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:42:26,188 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:42:26,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:42:26,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 02.11 08:42:26 BoogieIcfgContainer [2022-11-02 20:42:26,227 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-02 20:42:26,228 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:42:26,228 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:42:26,228 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:42:26,229 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:42:25" (3/4) ... [2022-11-02 20:42:26,232 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-11-02 20:42:26,282 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae9471bb-7769-41f1-b1e9-fa3fa25638f3/bin/uautomizer-Dbtcem3rbc/witness.graphml [2022-11-02 20:42:26,282 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:42:26,284 INFO L158 Benchmark]: Toolchain (without parser) took 1357.78ms. Allocated memory is still 111.1MB. Free memory was 68.6MB in the beginning and 55.8MB in the end (delta: 12.8MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. [2022-11-02 20:42:26,284 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 111.1MB. Free memory is still 84.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:42:26,293 INFO L158 Benchmark]: CACSL2BoogieTranslator took 264.73ms. Allocated memory is still 111.1MB. Free memory was 68.4MB in the beginning and 86.4MB in the end (delta: -18.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 20:42:26,297 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.14ms. Allocated memory is still 111.1MB. Free memory was 86.4MB in the beginning and 85.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:42:26,298 INFO L158 Benchmark]: Boogie Preprocessor took 25.52ms. Allocated memory is still 111.1MB. Free memory was 84.8MB in the beginning and 84.0MB in the end (delta: 800.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:42:26,298 INFO L158 Benchmark]: RCFGBuilder took 315.94ms. Allocated memory is still 111.1MB. Free memory was 84.0MB in the beginning and 75.9MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:42:26,299 INFO L158 Benchmark]: BuchiAutomizer took 639.77ms. Allocated memory is still 111.1MB. Free memory was 75.9MB in the beginning and 57.4MB in the end (delta: 18.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-02 20:42:26,299 INFO L158 Benchmark]: Witness Printer took 54.39ms. Allocated memory is still 111.1MB. Free memory was 57.4MB in the beginning and 55.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:42:26,302 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 111.1MB. Free memory is still 84.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 264.73ms. Allocated memory is still 111.1MB. Free memory was 68.4MB in the beginning and 86.4MB in the end (delta: -18.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.14ms. Allocated memory is still 111.1MB. Free memory was 86.4MB in the beginning and 85.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 25.52ms. Allocated memory is still 111.1MB. Free memory was 84.8MB in the beginning and 84.0MB in the end (delta: 800.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 315.94ms. Allocated memory is still 111.1MB. Free memory was 84.0MB in the beginning and 75.9MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 639.77ms. Allocated memory is still 111.1MB. Free memory was 75.9MB in the beginning and 57.4MB in the end (delta: 18.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 54.39ms. Allocated memory is still 111.1MB. Free memory was 57.4MB in the beginning and 55.8MB in the end (delta: 1.6MB). 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 0.5s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.4s. 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: 14]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L13] int y = __VERIFIER_nondet_int(); Loop: [L14] COND TRUE y >= 0 && y <= 10 [L15] y = (2*y + 1) / 2 End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 14]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L13] int y = __VERIFIER_nondet_int(); Loop: [L14] COND TRUE y >= 0 && y <= 10 [L15] y = (2*y + 1) / 2 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-11-02 20:42:26,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae9471bb-7769-41f1-b1e9-fa3fa25638f3/bin/uautomizer-Dbtcem3rbc/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)