./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/NO_04.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cf1a7837 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_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/NO_04.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl --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 26441cee42562e2fd703b97b1a86d2baa847af9810285d31267fccda11d2ea67 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:33:41,124 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:33:41,274 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-12 02:33:41,287 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:33:41,294 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:33:41,341 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:33:41,342 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:33:41,344 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:33:41,345 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:33:41,351 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:33:41,352 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:33:41,353 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-12 02:33:41,353 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-12 02:33:41,355 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-12 02:33:41,356 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-12 02:33:41,357 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-12 02:33:41,357 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-12 02:33:41,358 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:33:41,359 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-12 02:33:41,359 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:33:41,360 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:33:41,361 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-12 02:33:41,361 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-12 02:33:41,362 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-12 02:33:41,362 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:33:41,363 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:33:41,363 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-12 02:33:41,364 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:33:41,365 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:33:41,365 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:33:41,367 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:33:41,367 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:33:41,368 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-12 02:33:41,368 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_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26441cee42562e2fd703b97b1a86d2baa847af9810285d31267fccda11d2ea67 [2023-11-12 02:33:41,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:33:41,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:33:41,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:33:41,773 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:33:41,773 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:33:41,775 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/termination-restricted-15/NO_04.c [2023-11-12 02:33:45,406 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:33:45,641 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:33:45,642 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/sv-benchmarks/c/termination-restricted-15/NO_04.c [2023-11-12 02:33:45,651 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/data/3c5aa7ec1/125fb592283448ae82f69b1f92d96efb/FLAG26d7756fd [2023-11-12 02:33:45,670 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/data/3c5aa7ec1/125fb592283448ae82f69b1f92d96efb [2023-11-12 02:33:45,673 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:33:45,675 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:33:45,677 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:33:45,677 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:33:45,684 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:33:45,685 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:33:45" (1/1) ... [2023-11-12 02:33:45,687 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b7e3e8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:45, skipping insertion in model container [2023-11-12 02:33:45,687 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:33:45" (1/1) ... [2023-11-12 02:33:45,714 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:33:45,909 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:33:45,916 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:33:45,936 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:33:45,954 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:33:45,954 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:45 WrapperNode [2023-11-12 02:33:45,955 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:33:45,956 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:33:45,957 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:33:45,957 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:33:45,967 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:45" (1/1) ... [2023-11-12 02:33:45,972 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:45" (1/1) ... [2023-11-12 02:33:45,998 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 43 [2023-11-12 02:33:45,999 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:33:46,000 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:33:46,001 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:33:46,001 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:33:46,013 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:45" (1/1) ... [2023-11-12 02:33:46,013 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:45" (1/1) ... [2023-11-12 02:33:46,015 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:45" (1/1) ... [2023-11-12 02:33:46,016 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:45" (1/1) ... [2023-11-12 02:33:46,019 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:45" (1/1) ... [2023-11-12 02:33:46,036 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:45" (1/1) ... [2023-11-12 02:33:46,041 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:45" (1/1) ... [2023-11-12 02:33:46,043 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:45" (1/1) ... [2023-11-12 02:33:46,050 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:33:46,051 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:33:46,052 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:33:46,052 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:33:46,053 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:45" (1/1) ... [2023-11-12 02:33:46,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:33:46,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:33:46,097 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:33:46,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-12 02:33:46,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:33:46,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:33:46,258 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:33:46,261 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:33:46,377 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:33:46,385 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:33:46,386 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-12 02:33:46,388 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:33:46 BoogieIcfgContainer [2023-11-12 02:33:46,389 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:33:46,390 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-12 02:33:46,391 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-12 02:33:46,396 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-12 02:33:46,397 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-12 02:33:46,397 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 12.11 02:33:45" (1/3) ... [2023-11-12 02:33:46,399 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3d9c097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.11 02:33:46, skipping insertion in model container [2023-11-12 02:33:46,399 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-12 02:33:46,400 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:33:45" (2/3) ... [2023-11-12 02:33:46,400 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3d9c097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.11 02:33:46, skipping insertion in model container [2023-11-12 02:33:46,401 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-12 02:33:46,401 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:33:46" (3/3) ... [2023-11-12 02:33:46,403 INFO L332 chiAutomizerObserver]: Analyzing ICFG NO_04.c [2023-11-12 02:33:46,478 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-12 02:33:46,479 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-12 02:33:46,479 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-12 02:33:46,479 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-12 02:33:46,479 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-12 02:33:46,480 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-12 02:33:46,480 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-12 02:33:46,480 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-12 02:33:46,486 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 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) [2023-11-12 02:33:46,509 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2023-11-12 02:33:46,510 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-12 02:33:46,510 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-12 02:33:46,517 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-12 02:33:46,518 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-12 02:33:46,518 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-12 02:33:46,519 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 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) [2023-11-12 02:33:46,521 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2023-11-12 02:33:46,521 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-12 02:33:46,521 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-12 02:33:46,522 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-12 02:33:46,522 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-12 02:33:46,533 INFO L748 eck$LassoCheckResult]: Stem: 14#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~l~0#1, main_~m~0#1, main_~a~0#1, main_~b~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~l~0#1;havoc main_~m~0#1;havoc main_~a~0#1;havoc main_~b~0#1;main_~i~0#1 := 0; 6#L15-2true [2023-11-12 02:33:46,534 INFO L750 eck$LassoCheckResult]: Loop: 6#L15-2true assume !!(main_~i~0#1 < 100);main_~a~0#1 := 2 + main_~i~0#1;main_~j~0#1 := 0; 9#L18-2true assume !(main_~j~0#1 < main_~a~0#1); 12#L18-3true main_~i~0#1 := 1 + main_~i~0#1; 6#L15-2true [2023-11-12 02:33:46,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:46,543 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-12 02:33:46,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:46,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069174369] [2023-11-12 02:33:46,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:46,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:46,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:33:46,668 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:33:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:33:46,697 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:33:46,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:46,702 INFO L85 PathProgramCache]: Analyzing trace with hash 40983, now seen corresponding path program 1 times [2023-11-12 02:33:46,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:46,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273890158] [2023-11-12 02:33:46,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:46,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:46,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:33:46,721 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:33:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:33:46,730 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:33:46,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:46,733 INFO L85 PathProgramCache]: Analyzing trace with hash 28699925, now seen corresponding path program 1 times [2023-11-12 02:33:46,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:46,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93954516] [2023-11-12 02:33:46,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:46,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:46,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:33:46,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:33:46,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:33:46,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93954516] [2023-11-12 02:33:46,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93954516] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:33:46,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:33:46,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:33:46,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262996193] [2023-11-12 02:33:46,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:33:47,065 INFO L210 LassoAnalysis]: Preferences: [2023-11-12 02:33:47,066 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-12 02:33:47,066 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-12 02:33:47,066 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-12 02:33:47,066 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-12 02:33:47,067 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:33:47,067 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-12 02:33:47,067 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-12 02:33:47,067 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_04.c_Iteration1_Loop [2023-11-12 02:33:47,067 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-12 02:33:47,068 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-12 02:33:47,089 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:33:47,104 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:33:47,109 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:33:47,114 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:33:47,208 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-12 02:33:47,209 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-12 02:33:47,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:33:47,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:33:47,220 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:33:47,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-12 02:33:47,231 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-12 02:33:47,231 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-12 02:33:47,261 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-12 02:33:47,261 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-12 02:33:47,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:33:47,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:33:47,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:33:47,274 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:33:47,281 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-12 02:33:47,281 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-12 02:33:47,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-12 02:33:47,311 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-12 02:33:47,311 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-12 02:33:47,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:33:47,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:33:47,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:33:47,319 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:33:47,329 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-12 02:33:47,329 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-12 02:33:47,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-12 02:33:47,353 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-12 02:33:47,353 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~j~0#1=0} Honda state: {ULTIMATE.start_main_~j~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-12 02:33:47,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:33:47,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:33:47,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:33:47,359 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:33:47,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-12 02:33:47,365 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-12 02:33:47,366 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-12 02:33:47,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:33:47,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:33:47,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:33:47,401 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:33:47,419 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-12 02:33:47,419 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-12 02:33:47,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-12 02:33:47,613 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-12 02:33:47,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:33:47,625 INFO L210 LassoAnalysis]: Preferences: [2023-11-12 02:33:47,625 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-12 02:33:47,625 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-12 02:33:47,626 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-12 02:33:47,626 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-12 02:33:47,626 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:33:47,626 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-12 02:33:47,626 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-12 02:33:47,626 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_04.c_Iteration1_Loop [2023-11-12 02:33:47,626 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-12 02:33:47,627 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-12 02:33:47,629 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:33:47,644 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:33:47,649 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:33:47,656 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:33:47,761 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-12 02:33:47,767 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-12 02:33:47,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:33:47,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:33:47,773 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:33:47,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-12 02:33:47,789 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 [2023-11-12 02:33:47,802 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-12 02:33:47,802 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-12 02:33:47,803 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-12 02:33:47,803 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-12 02:33:47,811 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-12 02:33:47,812 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-12 02:33:47,833 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-12 02:33:47,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-12 02:33:47,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:33:47,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:33:47,843 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:33:47,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-12 02:33:47,847 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 [2023-11-12 02:33:47,858 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-12 02:33:47,859 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-12 02:33:47,859 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-12 02:33:47,859 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-12 02:33:47,864 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-12 02:33:47,864 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-12 02:33:47,888 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-12 02:33:47,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2023-11-12 02:33:47,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:33:47,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:33:47,899 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:33:47,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-12 02:33:47,905 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 [2023-11-12 02:33:47,920 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-12 02:33:47,920 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-12 02:33:47,921 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-12 02:33:47,921 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-12 02:33:47,921 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-12 02:33:47,923 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-12 02:33:47,923 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-12 02:33:47,940 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-12 02:33:47,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-11-12 02:33:47,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:33:47,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:33:47,947 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:33:47,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-12 02:33:47,950 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 [2023-11-12 02:33:47,962 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-12 02:33:47,963 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-12 02:33:47,963 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-12 02:33:47,963 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-12 02:33:47,963 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-12 02:33:47,965 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-12 02:33:47,966 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-12 02:33:47,992 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-12 02:33:48,009 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-12 02:33:48,010 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-12 02:33:48,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:33:48,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:33:48,062 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:33:48,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-12 02:33:48,065 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-12 02:33:48,065 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-12 02:33:48,065 INFO L513 LassoAnalysis]: Proved termination. [2023-11-12 02:33:48,066 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2023-11-12 02:33:48,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-12 02:33:48,074 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-12 02:33:48,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:48,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:33:48,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:33:48,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:33:48,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:33:48,135 WARN L260 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:33:48,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:33:48,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:33:48,291 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2023-11-12 02:33:48,293 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 15 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 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 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:48,445 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 15 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 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 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 59 states and 101 transitions. Complement of second has 10 states. [2023-11-12 02:33:48,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2023-11-12 02:33:48,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:48,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 63 transitions. [2023-11-12 02:33:48,456 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 63 transitions. Stem has 2 letters. Loop has 3 letters. [2023-11-12 02:33:48,457 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-12 02:33:48,457 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 63 transitions. Stem has 5 letters. Loop has 3 letters. [2023-11-12 02:33:48,458 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-12 02:33:48,458 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 63 transitions. Stem has 2 letters. Loop has 6 letters. [2023-11-12 02:33:48,458 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-12 02:33:48,459 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 59 states and 101 transitions. [2023-11-12 02:33:48,463 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2023-11-12 02:33:48,467 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 59 states to 38 states and 55 transitions. [2023-11-12 02:33:48,468 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2023-11-12 02:33:48,468 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2023-11-12 02:33:48,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 55 transitions. [2023-11-12 02:33:48,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-12 02:33:48,469 INFO L218 hiAutomatonCegarLoop]: Abstraction has 38 states and 55 transitions. [2023-11-12 02:33:48,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 55 transitions. [2023-11-12 02:33:48,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 25. [2023-11-12 02:33:48,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 25 states have (on average 1.44) internal successors, (36), 24 states have internal predecessors, (36), 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) [2023-11-12 02:33:48,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 36 transitions. [2023-11-12 02:33:48,493 INFO L240 hiAutomatonCegarLoop]: Abstraction has 25 states and 36 transitions. [2023-11-12 02:33:48,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:33:48,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:33:48,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:33:48,496 INFO L87 Difference]: Start difference. First operand 25 states and 36 transitions. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:48,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:33:48,530 INFO L93 Difference]: Finished difference Result 35 states and 50 transitions. [2023-11-12 02:33:48,531 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 50 transitions. [2023-11-12 02:33:48,532 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2023-11-12 02:33:48,533 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 19 states and 26 transitions. [2023-11-12 02:33:48,533 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2023-11-12 02:33:48,534 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2023-11-12 02:33:48,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 26 transitions. [2023-11-12 02:33:48,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:33:48,534 INFO L218 hiAutomatonCegarLoop]: Abstraction has 19 states and 26 transitions. [2023-11-12 02:33:48,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 26 transitions. [2023-11-12 02:33:48,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 12. [2023-11-12 02:33:48,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:33:48,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2023-11-12 02:33:48,536 INFO L240 hiAutomatonCegarLoop]: Abstraction has 12 states and 16 transitions. [2023-11-12 02:33:48,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:33:48,538 INFO L428 stractBuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2023-11-12 02:33:48,538 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-12 02:33:48,538 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2023-11-12 02:33:48,538 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-12 02:33:48,539 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-12 02:33:48,539 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-12 02:33:48,539 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-12 02:33:48,539 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2023-11-12 02:33:48,540 INFO L748 eck$LassoCheckResult]: Stem: 195#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 196#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~l~0#1, main_~m~0#1, main_~a~0#1, main_~b~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~l~0#1;havoc main_~m~0#1;havoc main_~a~0#1;havoc main_~b~0#1;main_~i~0#1 := 0; 192#L15-2 [2023-11-12 02:33:48,540 INFO L750 eck$LassoCheckResult]: Loop: 192#L15-2 assume !!(main_~i~0#1 < 100);main_~a~0#1 := 2 + main_~i~0#1;main_~j~0#1 := 0; 189#L18-2 assume !!(main_~j~0#1 < main_~a~0#1);main_~k~0#1 := 3 + (main_~i~0#1 + main_~j~0#1); 190#L20-2 assume !(main_~k~0#1 >= 0); 193#L20-3 main_~j~0#1 := 1 + main_~j~0#1; 194#L18-2 assume !(main_~j~0#1 < main_~a~0#1); 191#L18-3 main_~i~0#1 := 1 + main_~i~0#1; 192#L15-2 [2023-11-12 02:33:48,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:48,540 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2023-11-12 02:33:48,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:48,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145538390] [2023-11-12 02:33:48,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:48,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:48,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:33:48,545 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:33:48,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:33:48,548 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:33:48,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:48,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1221756439, now seen corresponding path program 1 times [2023-11-12 02:33:48,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:48,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288052141] [2023-11-12 02:33:48,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:48,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:33:48,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:33:48,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:33:48,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288052141] [2023-11-12 02:33:48,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288052141] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:33:48,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:33:48,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:33:48,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476727756] [2023-11-12 02:33:48,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:33:48,599 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-12 02:33:48,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:33:48,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:33:48,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:33:48,600 INFO L87 Difference]: Start difference. First operand 12 states and 16 transitions. cyclomatic complexity: 5 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-11-12 02:33:48,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:33:48,634 INFO L93 Difference]: Finished difference Result 18 states and 24 transitions. [2023-11-12 02:33:48,634 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 24 transitions. [2023-11-12 02:33:48,635 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 15 [2023-11-12 02:33:48,636 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 18 states and 24 transitions. [2023-11-12 02:33:48,636 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2023-11-12 02:33:48,636 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2023-11-12 02:33:48,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 24 transitions. [2023-11-12 02:33:48,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:33:48,636 INFO L218 hiAutomatonCegarLoop]: Abstraction has 18 states and 24 transitions. [2023-11-12 02:33:48,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 24 transitions. [2023-11-12 02:33:48,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 13. [2023-11-12 02:33:48,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 12 states have internal predecessors, (17), 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) [2023-11-12 02:33:48,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2023-11-12 02:33:48,639 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 17 transitions. [2023-11-12 02:33:48,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:33:48,642 INFO L428 stractBuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2023-11-12 02:33:48,642 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-12 02:33:48,642 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 17 transitions. [2023-11-12 02:33:48,644 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2023-11-12 02:33:48,644 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-12 02:33:48,644 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-12 02:33:48,646 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-12 02:33:48,646 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:33:48,646 INFO L748 eck$LassoCheckResult]: Stem: 234#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 235#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~l~0#1, main_~m~0#1, main_~a~0#1, main_~b~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~l~0#1;havoc main_~m~0#1;havoc main_~a~0#1;havoc main_~b~0#1;main_~i~0#1 := 0; 233#L15-2 [2023-11-12 02:33:48,646 INFO L750 eck$LassoCheckResult]: Loop: 233#L15-2 assume !!(main_~i~0#1 < 100);main_~a~0#1 := 2 + main_~i~0#1;main_~j~0#1 := 0; 226#L18-2 assume !!(main_~j~0#1 < main_~a~0#1);main_~k~0#1 := 3 + (main_~i~0#1 + main_~j~0#1); 227#L20-2 assume !!(main_~k~0#1 >= 0);main_~b~0#1 := 4 + (main_~i~0#1 + main_~j~0#1 + main_~k~0#1);main_~l~0#1 := 0; 228#L23-2 assume !(main_~l~0#1 < main_~b~0#1); 229#L23-3 main_~k~0#1 := main_~k~0#1 - 1; 236#L20-2 assume !(main_~k~0#1 >= 0); 230#L20-3 main_~j~0#1 := 1 + main_~j~0#1; 231#L18-2 assume !(main_~j~0#1 < main_~a~0#1); 232#L18-3 main_~i~0#1 := 1 + main_~i~0#1; 233#L15-2 [2023-11-12 02:33:48,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:48,647 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2023-11-12 02:33:48,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:48,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357773727] [2023-11-12 02:33:48,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:48,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:48,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:33:48,660 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:33:48,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:33:48,662 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:33:48,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:48,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1352067341, now seen corresponding path program 1 times [2023-11-12 02:33:48,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:48,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883806799] [2023-11-12 02:33:48,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:48,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:48,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:33:48,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:33:48,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:33:48,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883806799] [2023-11-12 02:33:48,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883806799] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:33:48,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:33:48,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:33:48,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348335685] [2023-11-12 02:33:48,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:33:48,772 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-12 02:33:48,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:33:48,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:33:48,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:33:48,773 INFO L87 Difference]: Start difference. First operand 13 states and 17 transitions. cyclomatic complexity: 5 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-11-12 02:33:48,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:33:48,831 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2023-11-12 02:33:48,832 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 19 transitions. [2023-11-12 02:33:48,834 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2023-11-12 02:33:48,835 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 15 states and 19 transitions. [2023-11-12 02:33:48,835 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2023-11-12 02:33:48,835 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2023-11-12 02:33:48,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 19 transitions. [2023-11-12 02:33:48,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:33:48,836 INFO L218 hiAutomatonCegarLoop]: Abstraction has 15 states and 19 transitions. [2023-11-12 02:33:48,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 19 transitions. [2023-11-12 02:33:48,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2023-11-12 02:33:48,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 13 states have internal predecessors, (18), 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) [2023-11-12 02:33:48,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2023-11-12 02:33:48,841 INFO L240 hiAutomatonCegarLoop]: Abstraction has 14 states and 18 transitions. [2023-11-12 02:33:48,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:33:48,843 INFO L428 stractBuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2023-11-12 02:33:48,843 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-12 02:33:48,844 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 18 transitions. [2023-11-12 02:33:48,846 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2023-11-12 02:33:48,846 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-12 02:33:48,846 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-12 02:33:48,847 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-12 02:33:48,847 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:33:48,847 INFO L748 eck$LassoCheckResult]: Stem: 271#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 272#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~l~0#1, main_~m~0#1, main_~a~0#1, main_~b~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~l~0#1;havoc main_~m~0#1;havoc main_~a~0#1;havoc main_~b~0#1;main_~i~0#1 := 0; 269#L15-2 [2023-11-12 02:33:48,847 INFO L750 eck$LassoCheckResult]: Loop: 269#L15-2 assume !!(main_~i~0#1 < 100);main_~a~0#1 := 2 + main_~i~0#1;main_~j~0#1 := 0; 263#L18-2 assume !!(main_~j~0#1 < main_~a~0#1);main_~k~0#1 := 3 + (main_~i~0#1 + main_~j~0#1); 264#L20-2 assume !!(main_~k~0#1 >= 0);main_~b~0#1 := 4 + (main_~i~0#1 + main_~j~0#1 + main_~k~0#1);main_~l~0#1 := 0; 265#L23-2 assume !!(main_~l~0#1 < main_~b~0#1);main_~m~0#1 := 1000 + (main_~i~0#1 + main_~j~0#1 + main_~k~0#1 + main_~l~0#1); 261#L25-2 assume !(main_~m~0#1 >= 0); 262#L25-3 main_~l~0#1 := 1 + main_~l~0#1; 270#L23-2 assume !(main_~l~0#1 < main_~b~0#1); 273#L23-3 main_~k~0#1 := main_~k~0#1 - 1; 274#L20-2 assume !(main_~k~0#1 >= 0); 266#L20-3 main_~j~0#1 := 1 + main_~j~0#1; 267#L18-2 assume !(main_~j~0#1 < main_~a~0#1); 268#L18-3 main_~i~0#1 := 1 + main_~i~0#1; 269#L15-2 [2023-11-12 02:33:48,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:48,848 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2023-11-12 02:33:48,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:48,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345662714] [2023-11-12 02:33:48,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:48,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:33:48,858 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:33:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:33:48,866 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:33:48,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:48,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1603093127, now seen corresponding path program 1 times [2023-11-12 02:33:48,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:48,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323839902] [2023-11-12 02:33:48,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:48,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:48,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:33:48,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:33:48,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:33:48,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323839902] [2023-11-12 02:33:48,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323839902] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:33:48,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:33:48,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:33:48,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802639126] [2023-11-12 02:33:48,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:33:48,975 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-12 02:33:48,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:33:48,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:33:48,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:33:48,976 INFO L87 Difference]: Start difference. First operand 14 states and 18 transitions. cyclomatic complexity: 5 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2023-11-12 02:33:49,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:33:49,027 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2023-11-12 02:33:49,028 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 7 transitions. [2023-11-12 02:33:49,029 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-12 02:33:49,029 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 7 states and 7 transitions. [2023-11-12 02:33:49,030 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2023-11-12 02:33:49,030 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2023-11-12 02:33:49,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 7 transitions. [2023-11-12 02:33:49,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:33:49,030 INFO L218 hiAutomatonCegarLoop]: Abstraction has 7 states and 7 transitions. [2023-11-12 02:33:49,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 7 transitions. [2023-11-12 02:33:49,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2023-11-12 02:33:49,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.0) internal successors, (7), 6 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) [2023-11-12 02:33:49,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2023-11-12 02:33:49,033 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 7 transitions. [2023-11-12 02:33:49,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:33:49,037 INFO L428 stractBuchiCegarLoop]: Abstraction has 7 states and 7 transitions. [2023-11-12 02:33:49,037 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-12 02:33:49,037 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 7 transitions. [2023-11-12 02:33:49,039 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-12 02:33:49,039 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-12 02:33:49,040 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-12 02:33:49,040 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2023-11-12 02:33:49,040 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-11-12 02:33:49,041 INFO L748 eck$LassoCheckResult]: Stem: 298#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 299#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~l~0#1, main_~m~0#1, main_~a~0#1, main_~b~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~l~0#1;havoc main_~m~0#1;havoc main_~a~0#1;havoc main_~b~0#1;main_~i~0#1 := 0; 300#L15-2 assume !!(main_~i~0#1 < 100);main_~a~0#1 := 2 + main_~i~0#1;main_~j~0#1 := 0; 296#L18-2 assume !!(main_~j~0#1 < main_~a~0#1);main_~k~0#1 := 3 + (main_~i~0#1 + main_~j~0#1); 297#L20-2 assume !!(main_~k~0#1 >= 0);main_~b~0#1 := 4 + (main_~i~0#1 + main_~j~0#1 + main_~k~0#1);main_~l~0#1 := 0; 295#L23-2 assume !!(main_~l~0#1 < main_~b~0#1);main_~m~0#1 := 1000 + (main_~i~0#1 + main_~j~0#1 + main_~k~0#1 + main_~l~0#1); 294#L25-2 [2023-11-12 02:33:49,041 INFO L750 eck$LassoCheckResult]: Loop: 294#L25-2 assume !!(main_~m~0#1 >= 0);main_~m~0#1 := main_~m~0#1; 294#L25-2 [2023-11-12 02:33:49,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:49,042 INFO L85 PathProgramCache]: Analyzing trace with hash 889698581, now seen corresponding path program 1 times [2023-11-12 02:33:49,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:49,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559989673] [2023-11-12 02:33:49,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:49,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:33:49,066 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:33:49,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:33:49,072 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:33:49,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:49,073 INFO L85 PathProgramCache]: Analyzing trace with hash 78, now seen corresponding path program 1 times [2023-11-12 02:33:49,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:49,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814865863] [2023-11-12 02:33:49,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:49,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:49,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:33:49,077 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:33:49,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:33:49,081 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:33:49,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:33:49,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1810852282, now seen corresponding path program 1 times [2023-11-12 02:33:49,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:33:49,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297880760] [2023-11-12 02:33:49,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:33:49,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:33:49,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:33:49,090 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:33:49,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:33:49,097 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:33:49,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-12 02:33:49,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:33:49,252 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:33:49,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:33:49,287 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.11 02:33:49 BoogieIcfgContainer [2023-11-12 02:33:49,288 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-12 02:33:49,288 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 02:33:49,288 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 02:33:49,289 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 02:33:49,289 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:33:46" (3/4) ... [2023-11-12 02:33:49,291 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-12 02:33:49,330 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/witness.graphml [2023-11-12 02:33:49,330 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 02:33:49,331 INFO L158 Benchmark]: Toolchain (without parser) took 3655.90ms. Allocated memory is still 180.4MB. Free memory was 143.2MB in the beginning and 139.1MB in the end (delta: 4.1MB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. [2023-11-12 02:33:49,331 INFO L158 Benchmark]: CDTParser took 0.63ms. Allocated memory is still 134.2MB. Free memory is still 78.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:33:49,332 INFO L158 Benchmark]: CACSL2BoogieTranslator took 278.44ms. Allocated memory is still 180.4MB. Free memory was 142.7MB in the beginning and 133.3MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-12 02:33:49,332 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.02ms. Allocated memory is still 180.4MB. Free memory was 133.3MB in the beginning and 131.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:33:49,332 INFO L158 Benchmark]: Boogie Preprocessor took 50.42ms. Allocated memory is still 180.4MB. Free memory was 131.8MB in the beginning and 130.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:33:49,333 INFO L158 Benchmark]: RCFGBuilder took 337.69ms. Allocated memory is still 180.4MB. Free memory was 130.6MB in the beginning and 121.8MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-12 02:33:49,333 INFO L158 Benchmark]: BuchiAutomizer took 2897.30ms. Allocated memory is still 180.4MB. Free memory was 121.8MB in the beginning and 141.2MB in the end (delta: -19.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:33:49,334 INFO L158 Benchmark]: Witness Printer took 41.87ms. Allocated memory is still 180.4MB. Free memory was 141.2MB in the beginning and 139.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:33:49,336 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.63ms. Allocated memory is still 134.2MB. Free memory is still 78.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 278.44ms. Allocated memory is still 180.4MB. Free memory was 142.7MB in the beginning and 133.3MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.02ms. Allocated memory is still 180.4MB. Free memory was 133.3MB in the beginning and 131.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.42ms. Allocated memory is still 180.4MB. Free memory was 131.8MB in the beginning and 130.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 337.69ms. Allocated memory is still 180.4MB. Free memory was 130.6MB in the beginning and 121.8MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 2897.30ms. Allocated memory is still 180.4MB. Free memory was 121.8MB in the beginning and 141.2MB in the end (delta: -19.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 41.87ms. Allocated memory is still 180.4MB. Free memory was 141.2MB in the beginning and 139.1MB in the end (delta: 2.1MB). 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 Your program was decomposed into 5 terminating modules (4 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function (-1 * i) and consists of 6 locations. 4 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.8s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 2.0s. Construction of modules took 0.1s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 26 StatesRemovedByMinimization, 4 NontrivialMinimizations. 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, 108 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 107 mSDsluCounter, 84 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 46 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 96 IncrementalHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 38 mSDtfsCounter, 96 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT0 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax166 hnf100 lsp50 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq179 hnf92 smp100 dnf100 smp100 tf108 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 64ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 25]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L6] int i; [L7] int j; [L8] int k; [L9] int l; [L10] int m; [L11] int a; [L12] int b; [L13] i = 0 VAL [i=0] [L15] COND TRUE i < 100 [L16] a = i+2 [L17] j = 0 VAL [a=2, i=0, j=0] [L18] COND TRUE j < a [L19] k = i+j+3 VAL [a=2, i=0, j=0, k=3] [L20] COND TRUE k >= 0 [L21] b = i+j+k+4 [L22] l = 0 VAL [a=2, b=7, i=0, j=0, k=3, l=0] [L23] COND TRUE l < b [L24] m = i+j+k+l+1000 VAL [a=2, b=7, i=0, j=0, k=3, l=0, m=1003] Loop: [L25] COND TRUE m >= 0 [L26] m = m-0 End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 25]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int j; [L8] int k; [L9] int l; [L10] int m; [L11] int a; [L12] int b; [L13] i = 0 VAL [i=0] [L15] COND TRUE i < 100 [L16] a = i+2 [L17] j = 0 VAL [a=2, i=0, j=0] [L18] COND TRUE j < a [L19] k = i+j+3 VAL [a=2, i=0, j=0, k=3] [L20] COND TRUE k >= 0 [L21] b = i+j+k+4 [L22] l = 0 VAL [a=2, b=7, i=0, j=0, k=3, l=0] [L23] COND TRUE l < b [L24] m = i+j+k+l+1000 VAL [a=2, b=7, i=0, j=0, k=3, l=0, m=1003] Loop: [L25] COND TRUE m >= 0 [L26] m = m-0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-12 02:33:49,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b903798-390c-4a19-ad61-28e8b56fb6f8/bin/uautomizer-verify-uTZkv6EMXl/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)