./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-dietlibc/strlen.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b430d0c9-c2ac-49fc-af71-adb46c1bb1bb/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b430d0c9-c2ac-49fc-af71-adb46c1bb1bb/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b430d0c9-c2ac-49fc-af71-adb46c1bb1bb/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b430d0c9-c2ac-49fc-af71-adb46c1bb1bb/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-dietlibc/strlen.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b430d0c9-c2ac-49fc-af71-adb46c1bb1bb/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b430d0c9-c2ac-49fc-af71-adb46c1bb1bb/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --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 34b0c24ca65344579aaae251146dead1808e12ac6f6737a3aee037d4f6e47452 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:38:10,328 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:38:10,482 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b430d0c9-c2ac-49fc-af71-adb46c1bb1bb/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-19 07:38:10,493 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:38:10,494 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:38:10,538 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:38:10,541 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:38:10,542 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:38:10,543 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:38:10,549 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:38:10,550 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:38:10,551 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-19 07:38:10,552 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-19 07:38:10,554 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-19 07:38:10,554 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-19 07:38:10,555 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-19 07:38:10,555 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-19 07:38:10,556 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:38:10,557 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-19 07:38:10,557 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:38:10,558 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:38:10,559 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-19 07:38:10,559 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-19 07:38:10,560 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-19 07:38:10,561 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:38:10,561 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:38:10,562 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-19 07:38:10,562 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:38:10,563 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:38:10,563 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:38:10,565 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:38:10,565 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:38:10,566 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-19 07:38:10,567 INFO L153 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_b430d0c9-c2ac-49fc-af71-adb46c1bb1bb/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b430d0c9-c2ac-49fc-af71-adb46c1bb1bb/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34b0c24ca65344579aaae251146dead1808e12ac6f6737a3aee037d4f6e47452 [2023-11-19 07:38:10,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:38:11,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:38:11,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:38:11,024 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:38:11,025 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:38:11,026 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b430d0c9-c2ac-49fc-af71-adb46c1bb1bb/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/termination-dietlibc/strlen.i [2023-11-19 07:38:14,299 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:38:14,590 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:38:14,590 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b430d0c9-c2ac-49fc-af71-adb46c1bb1bb/sv-benchmarks/c/termination-dietlibc/strlen.i [2023-11-19 07:38:14,637 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b430d0c9-c2ac-49fc-af71-adb46c1bb1bb/bin/uautomizer-verify-uCwYo4JHxu/data/4ef02dfc4/72301bc12a5c4bcd9901e8e90a9b89fd/FLAG11868aca9 [2023-11-19 07:38:14,659 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b430d0c9-c2ac-49fc-af71-adb46c1bb1bb/bin/uautomizer-verify-uCwYo4JHxu/data/4ef02dfc4/72301bc12a5c4bcd9901e8e90a9b89fd [2023-11-19 07:38:14,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:38:14,669 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:38:14,675 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:38:14,676 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:38:14,683 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:38:14,684 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:38:14" (1/1) ... [2023-11-19 07:38:14,687 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a3edce2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:14, skipping insertion in model container [2023-11-19 07:38:14,687 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:38:14" (1/1) ... [2023-11-19 07:38:14,771 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:38:15,193 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:38:15,208 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:38:15,277 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:38:15,325 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:38:15,326 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:15 WrapperNode [2023-11-19 07:38:15,326 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:38:15,328 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:38:15,328 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:38:15,328 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:38:15,337 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:15" (1/1) ... [2023-11-19 07:38:15,364 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:15" (1/1) ... [2023-11-19 07:38:15,388 INFO L138 Inliner]: procedures = 113, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 42 [2023-11-19 07:38:15,388 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:38:15,389 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:38:15,390 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:38:15,390 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:38:15,398 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:15" (1/1) ... [2023-11-19 07:38:15,399 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:15" (1/1) ... [2023-11-19 07:38:15,408 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:15" (1/1) ... [2023-11-19 07:38:15,408 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:15" (1/1) ... [2023-11-19 07:38:15,414 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:15" (1/1) ... [2023-11-19 07:38:15,429 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:15" (1/1) ... [2023-11-19 07:38:15,450 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:15" (1/1) ... [2023-11-19 07:38:15,465 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:15" (1/1) ... [2023-11-19 07:38:15,485 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:38:15,486 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:38:15,486 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:38:15,486 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:38:15,487 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:15" (1/1) ... [2023-11-19 07:38:15,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:38:15,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b430d0c9-c2ac-49fc-af71-adb46c1bb1bb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:15,546 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b430d0c9-c2ac-49fc-af71-adb46c1bb1bb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:38:15,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b430d0c9-c2ac-49fc-af71-adb46c1bb1bb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-19 07:38:15,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:38:15,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:38:15,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:38:15,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:38:15,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:38:15,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:38:15,708 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:38:15,711 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:38:15,870 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:38:15,880 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:38:15,880 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:38:15,883 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:38:15 BoogieIcfgContainer [2023-11-19 07:38:15,884 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:38:15,886 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-19 07:38:15,886 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-19 07:38:15,890 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-19 07:38:15,891 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:38:15,891 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.11 07:38:14" (1/3) ... [2023-11-19 07:38:15,892 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@43c1acf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 07:38:15, skipping insertion in model container [2023-11-19 07:38:15,893 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:38:15,893 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:15" (2/3) ... [2023-11-19 07:38:15,895 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@43c1acf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 07:38:15, skipping insertion in model container [2023-11-19 07:38:15,896 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:38:15,896 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:38:15" (3/3) ... [2023-11-19 07:38:15,897 INFO L332 chiAutomizerObserver]: Analyzing ICFG strlen.i [2023-11-19 07:38:15,946 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-19 07:38:15,946 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-19 07:38:15,946 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-19 07:38:15,946 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-19 07:38:15,946 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-19 07:38:15,947 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-19 07:38:15,947 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-19 07:38:15,947 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-19 07:38:15,951 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 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) [2023-11-19 07:38:15,966 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-19 07:38:15,966 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:38:15,966 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:38:15,970 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-11-19 07:38:15,970 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-19 07:38:15,970 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-19 07:38:15,971 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 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) [2023-11-19 07:38:15,972 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-19 07:38:15,972 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:38:15,972 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:38:15,973 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-11-19 07:38:15,973 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-19 07:38:15,979 INFO L748 eck$LassoCheckResult]: Stem: 7#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 12#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~malloc6#1.base, main_#t~malloc6#1.offset, main_#t~ret7#1, main_~in_len~0#1, main_~hay~0#1.base, main_~hay~0#1.offset;havoc main_#t~nondet5#1;main_~in_len~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 4#L514true assume !(main_~in_len~0#1 < 1);call main_#t~malloc6#1.base, main_#t~malloc6#1.offset := #Ultimate.allocOnStack(main_~in_len~0#1 % 18446744073709551616);main_~hay~0#1.base, main_~hay~0#1.offset := main_#t~malloc6#1.base, main_#t~malloc6#1.offset;call write~int(0, main_~hay~0#1.base, main_~hay~0#1.offset + (main_~in_len~0#1 - 1), 1);assume { :begin_inline_strlen } true;strlen_#in~s#1.base, strlen_#in~s#1.offset := main_~hay~0#1.base, main_~hay~0#1.offset;havoc strlen_#res#1;havoc strlen_#t~pre3#1, strlen_#t~pre2#1.base, strlen_#t~pre2#1.offset, strlen_#t~mem4#1, strlen_~s#1.base, strlen_~s#1.offset, strlen_~i~0#1;strlen_~s#1.base, strlen_~s#1.offset := strlen_#in~s#1.base, strlen_#in~s#1.offset;havoc strlen_~i~0#1; 9#L508true assume !(strlen_~s#1.base == 0 && strlen_~s#1.offset == 0);strlen_~i~0#1 := 0; 6#L509-4true [2023-11-19 07:38:15,980 INFO L750 eck$LassoCheckResult]: Loop: 6#L509-4true call strlen_#t~mem4#1 := read~int(strlen_~s#1.base, strlen_~s#1.offset, 1); 11#L509-1true assume !!(0 != strlen_#t~mem4#1);havoc strlen_#t~mem4#1;strlen_#t~pre3#1 := 1 + strlen_~i~0#1;strlen_~i~0#1 := 1 + strlen_~i~0#1;havoc strlen_#t~pre3#1; 5#L509-3true strlen_#t~pre2#1.base, strlen_#t~pre2#1.offset := strlen_~s#1.base, 1 + strlen_~s#1.offset;strlen_~s#1.base, strlen_~s#1.offset := strlen_~s#1.base, 1 + strlen_~s#1.offset;havoc strlen_#t~pre2#1.base, strlen_#t~pre2#1.offset; 6#L509-4true [2023-11-19 07:38:15,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:15,986 INFO L85 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2023-11-19 07:38:15,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:15,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923087106] [2023-11-19 07:38:15,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:15,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:16,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:38:16,151 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:38:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:38:16,213 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:38:16,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:16,218 INFO L85 PathProgramCache]: Analyzing trace with hash 45841, now seen corresponding path program 1 times [2023-11-19 07:38:16,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:16,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272417708] [2023-11-19 07:38:16,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:16,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:16,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:38:16,244 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:38:16,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:38:16,258 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:38:16,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:16,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1806906826, now seen corresponding path program 1 times [2023-11-19 07:38:16,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:16,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185844232] [2023-11-19 07:38:16,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:16,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:16,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:38:16,320 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:38:16,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:38:16,365 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:38:16,866 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:38:16,867 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:38:16,867 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:38:16,867 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:38:16,867 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:38:16,868 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:38:16,868 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:38:16,868 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:38:16,868 INFO L133 ssoRankerPreferences]: Filename of dumped script: strlen.i_Iteration1_Lasso [2023-11-19 07:38:16,868 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:38:16,868 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:38:16,888 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:38:16,901 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:38:16,904 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:38:16,910 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:38:17,305 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:38:17,308 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:38:17,311 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:38:17,314 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:38:17,318 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:38:17,320 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:38:17,323 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:38:17,327 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:38:17,330 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:38:17,708 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:38:17,714 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:38:17,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:38:17,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b430d0c9-c2ac-49fc-af71-adb46c1bb1bb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:17,721 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b430d0c9-c2ac-49fc-af71-adb46c1bb1bb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:38:17,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b430d0c9-c2ac-49fc-af71-adb46c1bb1bb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-19 07:38:17,732 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 07:38:17,742 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:38:17,743 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:38:17,743 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:38:17,743 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:38:17,748 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-19 07:38:17,748 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-19 07:38:17,762 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:38:17,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b430d0c9-c2ac-49fc-af71-adb46c1bb1bb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:38:17,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:38:17,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b430d0c9-c2ac-49fc-af71-adb46c1bb1bb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:17,789 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b430d0c9-c2ac-49fc-af71-adb46c1bb1bb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:38:17,802 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 07:38:17,815 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:38:17,815 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:38:17,816 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:38:17,816 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:38:17,816 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:38:17,818 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:38:17,818 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:38:17,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b430d0c9-c2ac-49fc-af71-adb46c1bb1bb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-19 07:38:17,836 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:38:17,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b430d0c9-c2ac-49fc-af71-adb46c1bb1bb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:38:17,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:38:17,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b430d0c9-c2ac-49fc-af71-adb46c1bb1bb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:17,862 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b430d0c9-c2ac-49fc-af71-adb46c1bb1bb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:38:17,865 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 07:38:17,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b430d0c9-c2ac-49fc-af71-adb46c1bb1bb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-19 07:38:17,878 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:38:17,879 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:38:17,879 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:38:17,879 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:38:17,884 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-19 07:38:17,884 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-19 07:38:17,897 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:38:17,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b430d0c9-c2ac-49fc-af71-adb46c1bb1bb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:38:17,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:38:17,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b430d0c9-c2ac-49fc-af71-adb46c1bb1bb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:17,922 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b430d0c9-c2ac-49fc-af71-adb46c1bb1bb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:38:17,925 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 07:38:17,937 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:38:17,937 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:38:17,938 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:38:17,938 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2023-11-19 07:38:17,938 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:38:17,939 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2023-11-19 07:38:17,939 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:38:17,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b430d0c9-c2ac-49fc-af71-adb46c1bb1bb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-19 07:38:17,956 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:38:17,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b430d0c9-c2ac-49fc-af71-adb46c1bb1bb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:38:17,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:38:17,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b430d0c9-c2ac-49fc-af71-adb46c1bb1bb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:17,981 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b430d0c9-c2ac-49fc-af71-adb46c1bb1bb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:38:17,990 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 07:38:17,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b430d0c9-c2ac-49fc-af71-adb46c1bb1bb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-19 07:38:18,003 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:38:18,003 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:38:18,003 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:38:18,003 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:38:18,015 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-19 07:38:18,015 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-19 07:38:18,036 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:38:18,088 INFO L443 ModelExtractionUtils]: Simplification made 13 calls to the SMT solver. [2023-11-19 07:38:18,088 INFO L444 ModelExtractionUtils]: 3 out of 19 variables were initially zero. Simplification set additionally 13 variables to zero. [2023-11-19 07:38:18,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:38:18,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b430d0c9-c2ac-49fc-af71-adb46c1bb1bb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:18,122 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b430d0c9-c2ac-49fc-af71-adb46c1bb1bb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:38:18,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b430d0c9-c2ac-49fc-af71-adb46c1bb1bb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-19 07:38:18,126 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:38:18,140 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2023-11-19 07:38:18,140 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:38:18,141 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_~hay~0#1.base)_1, ULTIMATE.start_strlen_~s#1.offset) = 1*v_rep(select #length ULTIMATE.start_main_~hay~0#1.base)_1 - 1*ULTIMATE.start_strlen_~s#1.offset Supporting invariants [] [2023-11-19 07:38:18,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b430d0c9-c2ac-49fc-af71-adb46c1bb1bb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:38:18,177 INFO L156 tatePredicateManager]: 4 out of 5 supporting invariants were superfluous and have been removed [2023-11-19 07:38:18,185 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[~hay~0!base] could not be translated [2023-11-19 07:38:18,188 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expression ~s!offset has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression [2023-11-19 07:38:18,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:18,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:38:18,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:18,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:18,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:38:18,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:18,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:18,398 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2023-11-19 07:38:18,400 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:18,485 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 26 states and 29 transitions. Complement of second has 7 states. [2023-11-19 07:38:18,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2023-11-19 07:38:18,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:18,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2023-11-19 07:38:18,496 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 4 letters. Loop has 3 letters. [2023-11-19 07:38:18,497 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:38:18,497 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 7 letters. Loop has 3 letters. [2023-11-19 07:38:18,497 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:38:18,498 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 4 letters. Loop has 6 letters. [2023-11-19 07:38:18,498 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:38:18,499 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 29 transitions. [2023-11-19 07:38:18,501 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-19 07:38:18,504 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 0 states and 0 transitions. [2023-11-19 07:38:18,506 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-19 07:38:18,506 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-19 07:38:18,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-19 07:38:18,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:38:18,507 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:38:18,507 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:38:18,507 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:38:18,508 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-19 07:38:18,508 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-19 07:38:18,508 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-19 07:38:18,508 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-19 07:38:18,516 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.11 07:38:18 BoogieIcfgContainer [2023-11-19 07:38:18,516 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-19 07:38:18,517 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:38:18,517 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:38:18,517 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:38:18,518 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:38:15" (3/4) ... [2023-11-19 07:38:18,520 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 07:38:18,521 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:38:18,522 INFO L158 Benchmark]: Toolchain (without parser) took 3852.71ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 99.4MB in the beginning and 83.3MB in the end (delta: 16.1MB). Peak memory consumption was 46.5MB. Max. memory is 16.1GB. [2023-11-19 07:38:18,523 INFO L158 Benchmark]: CDTParser took 0.44ms. Allocated memory is still 109.1MB. Free memory is still 82.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:38:18,523 INFO L158 Benchmark]: CACSL2BoogieTranslator took 651.54ms. Allocated memory is still 138.4MB. Free memory was 98.8MB in the beginning and 83.5MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 07:38:18,524 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.83ms. Allocated memory is still 138.4MB. Free memory was 83.5MB in the beginning and 81.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:38:18,525 INFO L158 Benchmark]: Boogie Preprocessor took 95.78ms. Allocated memory is still 138.4MB. Free memory was 81.4MB in the beginning and 109.6MB in the end (delta: -28.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:38:18,525 INFO L158 Benchmark]: RCFGBuilder took 398.20ms. Allocated memory is still 138.4MB. Free memory was 109.6MB in the beginning and 99.3MB in the end (delta: 10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-19 07:38:18,526 INFO L158 Benchmark]: BuchiAutomizer took 2630.38ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 98.7MB in the beginning and 83.3MB in the end (delta: 15.4MB). Peak memory consumption was 47.1MB. Max. memory is 16.1GB. [2023-11-19 07:38:18,527 INFO L158 Benchmark]: Witness Printer took 4.27ms. Allocated memory is still 167.8MB. Free memory is still 83.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:38:18,530 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44ms. Allocated memory is still 109.1MB. Free memory is still 82.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 651.54ms. Allocated memory is still 138.4MB. Free memory was 98.8MB in the beginning and 83.5MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.83ms. Allocated memory is still 138.4MB. Free memory was 83.5MB in the beginning and 81.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 95.78ms. Allocated memory is still 138.4MB. Free memory was 81.4MB in the beginning and 109.6MB in the end (delta: -28.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 398.20ms. Allocated memory is still 138.4MB. Free memory was 109.6MB in the beginning and 99.3MB in the end (delta: 10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 2630.38ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 98.7MB in the beginning and 83.3MB in the end (delta: 15.4MB). Peak memory consumption was 47.1MB. Max. memory is 16.1GB. * Witness Printer took 4.27ms. Allocated memory is still 167.8MB. Free memory is still 83.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[~hay~0!base] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression ~s!offset has a CASTFunctionDefinition but is no IdentifierExpression: IdentifierExpression * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function null and consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.5s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 2.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. 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 [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10 IncrementalHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 11 mSDtfsCounter, 10 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital115 mio100 ax100 hnf100 lsp85 ukn100 mio100 lsp44 div184 bol100 ite100 ukn100 eq161 hnf92 smp67 dnf100 smp100 tf100 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 47ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-11-19 07:38:18,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b430d0c9-c2ac-49fc-af71-adb46c1bb1bb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:38:18,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b430d0c9-c2ac-49fc-af71-adb46c1bb1bb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE