./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB --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 06c9e9e5fbbf1cc74be5b07da6214ee5470bdc6403e06237275b94d0a60c1592 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:30:53,859 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:30:53,992 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-11-27 23:30:54,005 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:30:54,006 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:30:54,054 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:30:54,055 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:30:54,055 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:30:54,056 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:30:54,056 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:30:54,056 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:30:54,056 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:30:54,057 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:30:54,058 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-27 23:30:54,059 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-27 23:30:54,059 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-27 23:30:54,059 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-27 23:30:54,060 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-27 23:30:54,060 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-27 23:30:54,060 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:30:54,060 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-27 23:30:54,061 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:30:54,061 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:30:54,061 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-27 23:30:54,061 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-27 23:30:54,062 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-27 23:30:54,062 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 23:30:54,062 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:30:54,062 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-27 23:30:54,062 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:30:54,062 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:30:54,063 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:30:54,063 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:30:54,063 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:30:54,063 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL_NO_AM [2024-11-27 23:30:54,063 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-27 23:30:54,063 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 06c9e9e5fbbf1cc74be5b07da6214ee5470bdc6403e06237275b94d0a60c1592 [2024-11-27 23:30:54,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:30:54,496 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:30:54,501 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:30:54,503 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:30:54,503 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:30:54,504 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.c [2024-11-27 23:30:58,204 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/data/0bd083f5b/2034014f7bbd49a6b0cdb9250c707318/FLAG505263b24 [2024-11-27 23:30:58,454 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:30:58,455 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.c [2024-11-27 23:30:58,464 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/data/0bd083f5b/2034014f7bbd49a6b0cdb9250c707318/FLAG505263b24 [2024-11-27 23:30:58,482 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/data/0bd083f5b/2034014f7bbd49a6b0cdb9250c707318 [2024-11-27 23:30:58,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:30:58,488 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:30:58,490 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:30:58,490 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:30:58,496 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:30:58,497 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:30:58" (1/1) ... [2024-11-27 23:30:58,498 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56dccea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:30:58, skipping insertion in model container [2024-11-27 23:30:58,499 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:30:58" (1/1) ... [2024-11-27 23:30:58,516 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:30:58,754 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:30:58,763 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:30:58,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:30:58,806 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:30:58,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:30:58 WrapperNode [2024-11-27 23:30:58,807 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:30:58,808 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:30:58,808 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:30:58,808 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:30:58,819 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:30:58" (1/1) ... [2024-11-27 23:30:58,827 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:30:58" (1/1) ... [2024-11-27 23:30:58,847 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2024-11-27 23:30:58,848 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:30:58,848 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:30:58,849 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:30:58,849 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:30:58,860 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:30:58" (1/1) ... [2024-11-27 23:30:58,861 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:30:58" (1/1) ... [2024-11-27 23:30:58,861 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:30:58" (1/1) ... [2024-11-27 23:30:58,868 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-27 23:30:58,869 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:30:58" (1/1) ... [2024-11-27 23:30:58,869 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:30:58" (1/1) ... [2024-11-27 23:30:58,871 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:30:58" (1/1) ... [2024-11-27 23:30:58,872 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:30:58" (1/1) ... [2024-11-27 23:30:58,876 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:30:58" (1/1) ... [2024-11-27 23:30:58,877 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:30:58" (1/1) ... [2024-11-27 23:30:58,878 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:30:58" (1/1) ... [2024-11-27 23:30:58,879 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:30:58,881 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:30:58,881 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:30:58,881 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:30:58,883 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:30:58" (1/1) ... [2024-11-27 23:30:58,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-27 23:30:58,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:30:58,926 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-27 23:30:58,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-11-27 23:30:58,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:30:58,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:30:59,071 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:30:59,074 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:30:59,144 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-11-27 23:30:59,144 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:30:59,154 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:30:59,154 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-27 23:30:59,154 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:30:59 BoogieIcfgContainer [2024-11-27 23:30:59,155 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:30:59,156 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-27 23:30:59,156 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-27 23:30:59,163 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-27 23:30:59,164 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-27 23:30:59,164 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.11 11:30:58" (1/3) ... [2024-11-27 23:30:59,166 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@552c7161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.11 11:30:59, skipping insertion in model container [2024-11-27 23:30:59,166 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-27 23:30:59,166 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:30:58" (2/3) ... [2024-11-27 23:30:59,166 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@552c7161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.11 11:30:59, skipping insertion in model container [2024-11-27 23:30:59,166 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-27 23:30:59,167 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:30:59" (3/3) ... [2024-11-27 23:30:59,168 INFO L363 chiAutomizerObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig8a-modified.c [2024-11-27 23:30:59,231 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-27 23:30:59,231 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-27 23:30:59,231 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-27 23:30:59,232 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-27 23:30:59,232 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-27 23:30:59,233 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-27 23:30:59,233 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-27 23:30:59,233 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-27 23:30:59,240 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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) [2024-11-27 23:30:59,263 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-27 23:30:59,264 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-27 23:30:59,265 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-27 23:30:59,272 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-27 23:30:59,272 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-27 23:30:59,272 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-27 23:30:59,273 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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) [2024-11-27 23:30:59,273 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-27 23:30:59,274 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-27 23:30:59,274 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-27 23:30:59,274 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-11-27 23:30:59,274 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-27 23:30:59,285 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~K~0#1, main_~x~0#1;havoc main_~K~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~K~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~x~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" [2024-11-27 23:30:59,285 INFO L749 eck$LassoCheckResult]: Loop: "assume main_~x~0#1 != main_~K~0#1;" "assume !(main_~x~0#1 > main_~K~0#1);main_~x~0#1 := 1 + main_~x~0#1;" [2024-11-27 23:30:59,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:30:59,294 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-11-27 23:30:59,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 23:30:59,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296568813] [2024-11-27 23:30:59,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:30:59,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:30:59,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:30:59,427 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 23:30:59,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:30:59,454 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-27 23:30:59,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:30:59,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1225, now seen corresponding path program 1 times [2024-11-27 23:30:59,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 23:30:59,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760934505] [2024-11-27 23:30:59,464 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:30:59,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:30:59,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:30:59,483 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 23:30:59,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:30:59,494 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-27 23:30:59,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:30:59,496 INFO L85 PathProgramCache]: Analyzing trace with hash 925707, now seen corresponding path program 1 times [2024-11-27 23:30:59,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 23:30:59,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714276300] [2024-11-27 23:30:59,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:30:59,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:30:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:30:59,513 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 23:30:59,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:30:59,526 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-27 23:30:59,678 INFO L204 LassoAnalysis]: Preferences: [2024-11-27 23:30:59,679 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-27 23:30:59,680 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-27 23:30:59,680 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-27 23:30:59,680 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-27 23:30:59,680 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-27 23:30:59,681 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-27 23:30:59,681 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-27 23:30:59,682 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration1_Loop [2024-11-27 23:30:59,682 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-27 23:30:59,682 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-27 23:30:59,706 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-27 23:30:59,747 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-27 23:30:59,757 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-27 23:30:59,909 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-27 23:30:59,910 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-27 23:30:59,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-27 23:30:59,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:30:59,917 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-27 23:30:59,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-11-27 23:30:59,923 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-27 23:30:59,923 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-27 23:30:59,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2024-11-27 23:30:59,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-27 23:30:59,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:30:59,967 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-27 23:30:59,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-11-27 23:30:59,972 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-27 23:30:59,972 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-27 23:31:00,115 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-27 23:31:00,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2024-11-27 23:31:00,121 INFO L204 LassoAnalysis]: Preferences: [2024-11-27 23:31:00,122 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-27 23:31:00,122 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-27 23:31:00,122 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-27 23:31:00,122 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-27 23:31:00,122 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-27 23:31:00,122 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-27 23:31:00,122 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-27 23:31:00,122 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration1_Loop [2024-11-27 23:31:00,122 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-27 23:31:00,122 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-27 23:31:00,125 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-27 23:31:00,149 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-27 23:31:00,157 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-27 23:31:00,275 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-27 23:31:00,281 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-27 23:31:00,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-27 23:31:00,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:00,285 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-27 23:31:00,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-11-27 23:31:00,291 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 [2024-11-27 23:31:00,310 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-27 23:31:00,310 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-27 23:31:00,311 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-27 23:31:00,312 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-27 23:31:00,312 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-27 23:31:00,319 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-27 23:31:00,319 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-27 23:31:00,325 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-27 23:31:00,332 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-27 23:31:00,336 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-27 23:31:00,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-27 23:31:00,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:00,342 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-27 23:31:00,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-11-27 23:31:00,347 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-27 23:31:00,347 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-27 23:31:00,348 INFO L474 LassoAnalysis]: Proved termination. [2024-11-27 23:31:00,349 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1, ULTIMATE.start_main_~K~0#1) = -1*ULTIMATE.start_main_~x~0#1 + 1*ULTIMATE.start_main_~K~0#1 Supporting invariants [] [2024-11-27 23:31:00,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2024-11-27 23:31:00,363 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-27 23:31:00,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:00,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:00,437 WARN L254 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 23:31:00,438 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:00,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:00,462 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 23:31:00,463 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:00,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:31:00,567 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-11-27 23:31:00,570 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2024-11-27 23:31:00,672 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 17 states and 24 transitions. Complement of second has 6 states. [2024-11-27 23:31:00,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-11-27 23:31:00,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2024-11-27 23:31:00,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2024-11-27 23:31:00,689 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 2 letters. [2024-11-27 23:31:00,690 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-27 23:31:00,690 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2024-11-27 23:31:00,691 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-27 23:31:00,691 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 4 letters. [2024-11-27 23:31:00,691 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-27 23:31:00,692 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 24 transitions. [2024-11-27 23:31:00,694 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-27 23:31:00,698 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 8 states and 11 transitions. [2024-11-27 23:31:00,699 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2024-11-27 23:31:00,700 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2024-11-27 23:31:00,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2024-11-27 23:31:00,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-27 23:31:00,701 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2024-11-27 23:31:00,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2024-11-27 23:31:00,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2024-11-27 23:31:00,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 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) [2024-11-27 23:31:00,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2024-11-27 23:31:00,734 INFO L240 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2024-11-27 23:31:00,735 INFO L425 stractBuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2024-11-27 23:31:00,735 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-27 23:31:00,735 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2024-11-27 23:31:00,736 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-27 23:31:00,736 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-27 23:31:00,736 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-27 23:31:00,736 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2024-11-27 23:31:00,736 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-27 23:31:00,737 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~K~0#1, main_~x~0#1;havoc main_~K~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~K~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~x~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" "assume main_~x~0#1 != main_~K~0#1;" "assume main_~x~0#1 > main_~K~0#1;main_~x~0#1 := main_~x~0#1 - 1;" [2024-11-27 23:31:00,737 INFO L749 eck$LassoCheckResult]: Loop: "assume main_~x~0#1 != main_~K~0#1;" "assume !(main_~x~0#1 > main_~K~0#1);main_~x~0#1 := 1 + main_~x~0#1;" [2024-11-27 23:31:00,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:00,738 INFO L85 PathProgramCache]: Analyzing trace with hash 925705, now seen corresponding path program 1 times [2024-11-27 23:31:00,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 23:31:00,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051643092] [2024-11-27 23:31:00,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:00,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:00,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:31:00,746 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 23:31:00,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:31:00,774 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-27 23:31:00,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:00,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1225, now seen corresponding path program 2 times [2024-11-27 23:31:00,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 23:31:00,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904743715] [2024-11-27 23:31:00,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:00,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:00,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:31:00,788 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 23:31:00,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2024-11-27 23:31:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:31:00,795 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-27 23:31:00,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:00,798 INFO L85 PathProgramCache]: Analyzing trace with hash 889602769, now seen corresponding path program 1 times [2024-11-27 23:31:00,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 23:31:00,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805557772] [2024-11-27 23:31:00,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:00,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:00,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL_NO_AM found an infeasible trace [2024-11-27 23:31:00,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805557772] [2024-11-27 23:31:00,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805557772] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:31:00,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979189365] [2024-11-27 23:31:00,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:00,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:00,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:00,985 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:31:00,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 23:31:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:01,023 INFO L256 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:31:01,024 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:01,061 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:31:01,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979189365] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:31:01,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:31:01,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-27 23:31:01,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468426844] [2024-11-27 23:31:01,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:31:01,130 INFO L204 LassoAnalysis]: Preferences: [2024-11-27 23:31:01,130 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-27 23:31:01,130 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-27 23:31:01,130 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-27 23:31:01,130 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-27 23:31:01,131 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-27 23:31:01,131 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-27 23:31:01,131 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-27 23:31:01,131 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration2_Loop [2024-11-27 23:31:01,131 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-27 23:31:01,131 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-27 23:31:01,133 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-27 23:31:01,139 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-27 23:31:01,145 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-27 23:31:01,249 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-27 23:31:01,249 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-27 23:31:01,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-27 23:31:01,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:01,253 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-27 23:31:01,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-11-27 23:31:01,259 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-27 23:31:01,259 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-27 23:31:01,285 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-27 23:31:01,285 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-27 23:31:01,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2024-11-27 23:31:01,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-27 23:31:01,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:01,296 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-27 23:31:01,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-11-27 23:31:01,299 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-27 23:31:01,299 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-27 23:31:01,330 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-27 23:31:01,330 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-27 23:31:01,338 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2024-11-27 23:31:01,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-27 23:31:01,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:01,340 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-27 23:31:01,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-11-27 23:31:01,344 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-27 23:31:01,344 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-27 23:31:01,368 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2024-11-27 23:31:01,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-27 23:31:01,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:01,371 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-27 23:31:01,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-11-27 23:31:01,374 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-27 23:31:01,374 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-27 23:31:01,478 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-27 23:31:01,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2024-11-27 23:31:01,482 INFO L204 LassoAnalysis]: Preferences: [2024-11-27 23:31:01,482 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-27 23:31:01,482 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-27 23:31:01,482 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-27 23:31:01,482 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-27 23:31:01,483 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-27 23:31:01,483 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-27 23:31:01,483 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-27 23:31:01,483 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration2_Loop [2024-11-27 23:31:01,483 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-27 23:31:01,483 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-27 23:31:01,485 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-27 23:31:01,491 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-27 23:31:01,498 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-27 23:31:01,599 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-27 23:31:01,600 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-27 23:31:01,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-27 23:31:01,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:01,603 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-27 23:31:01,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-11-27 23:31:01,608 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 [2024-11-27 23:31:01,628 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-27 23:31:01,628 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-27 23:31:01,628 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-27 23:31:01,628 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-27 23:31:01,634 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-27 23:31:01,634 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-27 23:31:01,643 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-27 23:31:01,654 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2024-11-27 23:31:01,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-27 23:31:01,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:01,656 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-27 23:31:01,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-11-27 23:31:01,659 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 [2024-11-27 23:31:01,674 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-27 23:31:01,674 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-27 23:31:01,674 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-27 23:31:01,674 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-27 23:31:01,678 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-27 23:31:01,678 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-27 23:31:01,684 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-27 23:31:01,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2024-11-27 23:31:01,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-27 23:31:01,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:01,702 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-27 23:31:01,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-11-27 23:31:01,704 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 [2024-11-27 23:31:01,723 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-27 23:31:01,724 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-27 23:31:01,724 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-27 23:31:01,724 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-27 23:31:01,724 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-27 23:31:01,726 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-27 23:31:01,726 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-27 23:31:01,731 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-27 23:31:01,741 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2024-11-27 23:31:01,741 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-27 23:31:01,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-27 23:31:01,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:01,749 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-27 23:31:01,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-11-27 23:31:01,755 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-27 23:31:01,755 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-27 23:31:01,756 INFO L474 LassoAnalysis]: Proved termination. [2024-11-27 23:31:01,756 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1, ULTIMATE.start_main_~K~0#1) = -1*ULTIMATE.start_main_~x~0#1 + 1*ULTIMATE.start_main_~K~0#1 Supporting invariants [] [2024-11-27 23:31:01,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2024-11-27 23:31:01,769 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-27 23:31:01,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:01,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:01,809 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 23:31:01,809 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:01,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:01,830 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 23:31:01,831 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:01,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:31:01,877 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-11-27 23:31:01,878 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 2.0) 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) [2024-11-27 23:31:01,917 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 2.0) 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) Result 12 states and 17 transitions. Complement of second has 5 states. [2024-11-27 23:31:01,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-11-27 23:31:01,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) 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) [2024-11-27 23:31:01,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2024-11-27 23:31:01,920 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2024-11-27 23:31:01,924 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-27 23:31:01,924 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2024-11-27 23:31:01,924 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-27 23:31:01,924 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2024-11-27 23:31:01,924 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-27 23:31:01,925 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2024-11-27 23:31:01,926 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-27 23:31:01,926 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2024-11-27 23:31:01,926 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2024-11-27 23:31:01,926 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2024-11-27 23:31:01,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2024-11-27 23:31:01,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-27 23:31:01,927 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2024-11-27 23:31:01,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2024-11-27 23:31:01,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-11-27 23:31:01,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 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) [2024-11-27 23:31:01,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2024-11-27 23:31:01,931 INFO L240 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2024-11-27 23:31:01,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2024-11-27 23:31:01,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:31:01,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:31:01,936 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2024-11-27 23:31:01,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:31:01,965 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2024-11-27 23:31:01,966 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2024-11-27 23:31:01,966 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-27 23:31:01,967 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 10 states and 12 transitions. [2024-11-27 23:31:01,967 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2024-11-27 23:31:01,967 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2024-11-27 23:31:01,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 12 transitions. [2024-11-27 23:31:01,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-27 23:31:01,968 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10 states and 12 transitions. [2024-11-27 23:31:01,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 12 transitions. [2024-11-27 23:31:01,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 7. [2024-11-27 23:31:01,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 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) [2024-11-27 23:31:01,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2024-11-27 23:31:01,970 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 9 transitions. [2024-11-27 23:31:01,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:31:01,971 INFO L425 stractBuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2024-11-27 23:31:01,972 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-27 23:31:01,972 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2024-11-27 23:31:01,972 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-27 23:31:01,973 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-27 23:31:01,973 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-27 23:31:01,973 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-27 23:31:01,973 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-27 23:31:01,973 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~K~0#1, main_~x~0#1;havoc main_~K~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~K~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~x~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" "assume main_~x~0#1 != main_~K~0#1;" [2024-11-27 23:31:01,974 INFO L749 eck$LassoCheckResult]: Loop: "assume main_~x~0#1 > main_~K~0#1;main_~x~0#1 := main_~x~0#1 - 1;" "assume main_~x~0#1 != main_~K~0#1;" [2024-11-27 23:31:01,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:01,974 INFO L85 PathProgramCache]: Analyzing trace with hash 29861, now seen corresponding path program 1 times [2024-11-27 23:31:01,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 23:31:01,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749394864] [2024-11-27 23:31:01,975 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:01,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:01,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:31:01,980 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 23:31:01,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:31:01,983 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-27 23:31:01,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:01,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1403, now seen corresponding path program 1 times [2024-11-27 23:31:01,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 23:31:01,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50823277] [2024-11-27 23:31:01,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:01,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:31:01,992 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 23:31:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:31:01,997 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-27 23:31:01,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:01,998 INFO L85 PathProgramCache]: Analyzing trace with hash 28696863, now seen corresponding path program 2 times [2024-11-27 23:31:01,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 23:31:01,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026553422] [2024-11-27 23:31:01,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:01,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:02,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:31:02,005 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 23:31:02,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:31:02,011 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-27 23:31:02,049 INFO L204 LassoAnalysis]: Preferences: [2024-11-27 23:31:02,049 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-27 23:31:02,049 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-27 23:31:02,049 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-27 23:31:02,049 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-27 23:31:02,049 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-27 23:31:02,050 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-27 23:31:02,050 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-27 23:31:02,050 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration3_Loop [2024-11-27 23:31:02,050 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-27 23:31:02,050 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-27 23:31:02,052 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-27 23:31:02,057 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-27 23:31:02,071 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-27 23:31:02,147 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-27 23:31:02,147 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-27 23:31:02,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-27 23:31:02,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:02,150 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-27 23:31:02,157 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-27 23:31:02,157 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-27 23:31:02,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-11-27 23:31:02,183 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-27 23:31:02,183 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-27 23:31:02,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2024-11-27 23:31:02,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-27 23:31:02,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:02,192 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-27 23:31:02,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-11-27 23:31:02,195 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-27 23:31:02,195 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-27 23:31:02,224 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2024-11-27 23:31:02,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-27 23:31:02,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:02,228 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-27 23:31:02,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-11-27 23:31:02,232 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-27 23:31:02,232 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-27 23:31:02,369 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-27 23:31:02,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2024-11-27 23:31:02,373 INFO L204 LassoAnalysis]: Preferences: [2024-11-27 23:31:02,373 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-27 23:31:02,373 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-27 23:31:02,373 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-27 23:31:02,374 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-27 23:31:02,374 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-27 23:31:02,374 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-27 23:31:02,374 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-27 23:31:02,374 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration3_Loop [2024-11-27 23:31:02,374 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-27 23:31:02,374 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-27 23:31:02,375 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-27 23:31:02,388 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-27 23:31:02,405 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-27 23:31:02,491 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-27 23:31:02,491 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-27 23:31:02,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-27 23:31:02,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:02,496 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-27 23:31:02,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2024-11-27 23:31:02,500 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 [2024-11-27 23:31:02,518 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-27 23:31:02,519 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-27 23:31:02,519 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-27 23:31:02,519 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-27 23:31:02,526 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-11-27 23:31:02,527 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-11-27 23:31:02,535 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-27 23:31:02,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2024-11-27 23:31:02,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-27 23:31:02,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:02,553 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-27 23:31:02,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2024-11-27 23:31:02,557 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 [2024-11-27 23:31:02,577 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-27 23:31:02,577 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-27 23:31:02,577 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-27 23:31:02,577 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-27 23:31:02,578 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-27 23:31:02,579 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-27 23:31:02,579 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-27 23:31:02,583 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-27 23:31:02,590 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2024-11-27 23:31:02,590 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-27 23:31:02,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-27 23:31:02,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:02,593 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-27 23:31:02,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2024-11-27 23:31:02,598 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-27 23:31:02,598 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-27 23:31:02,598 INFO L474 LassoAnalysis]: Proved termination. [2024-11-27 23:31:02,598 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1, ULTIMATE.start_main_~K~0#1) = 1*ULTIMATE.start_main_~x~0#1 - 1*ULTIMATE.start_main_~K~0#1 Supporting invariants [] [2024-11-27 23:31:02,607 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2024-11-27 23:31:02,609 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-27 23:31:02,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:02,643 INFO L256 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 23:31:02,643 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:02,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:02,655 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:31:02,656 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:02,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:31:02,692 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-11-27 23:31:02,692 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2024-11-27 23:31:02,706 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 12 states and 14 transitions. Complement of second has 5 states. [2024-11-27 23:31:02,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-11-27 23:31:02,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2024-11-27 23:31:02,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2024-11-27 23:31:02,708 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2024-11-27 23:31:02,708 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-27 23:31:02,708 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2024-11-27 23:31:02,708 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-27 23:31:02,708 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2024-11-27 23:31:02,709 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-27 23:31:02,709 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2024-11-27 23:31:02,709 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-27 23:31:02,710 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 8 states and 9 transitions. [2024-11-27 23:31:02,710 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2024-11-27 23:31:02,710 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2024-11-27 23:31:02,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2024-11-27 23:31:02,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-27 23:31:02,710 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 9 transitions. [2024-11-27 23:31:02,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2024-11-27 23:31:02,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2024-11-27 23:31:02,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:31:02,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2024-11-27 23:31:02,711 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 8 transitions. [2024-11-27 23:31:02,711 INFO L425 stractBuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2024-11-27 23:31:02,712 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-27 23:31:02,712 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2024-11-27 23:31:02,712 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-27 23:31:02,712 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-27 23:31:02,712 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-27 23:31:02,712 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2024-11-27 23:31:02,713 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-27 23:31:02,713 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~K~0#1, main_~x~0#1;havoc main_~K~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~K~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~x~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" "assume main_~x~0#1 != main_~K~0#1;" "assume !(main_~x~0#1 > main_~K~0#1);main_~x~0#1 := 1 + main_~x~0#1;" "assume main_~x~0#1 != main_~K~0#1;" [2024-11-27 23:31:02,713 INFO L749 eck$LassoCheckResult]: Loop: "assume main_~x~0#1 > main_~K~0#1;main_~x~0#1 := main_~x~0#1 - 1;" "assume main_~x~0#1 != main_~K~0#1;" [2024-11-27 23:31:02,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:02,713 INFO L85 PathProgramCache]: Analyzing trace with hash 28696925, now seen corresponding path program 2 times [2024-11-27 23:31:02,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 23:31:02,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664530030] [2024-11-27 23:31:02,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:02,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:02,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:31:02,719 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 23:31:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:31:02,728 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-27 23:31:02,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:02,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1403, now seen corresponding path program 2 times [2024-11-27 23:31:02,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 23:31:02,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363989162] [2024-11-27 23:31:02,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:02,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:02,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:31:02,741 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 23:31:02,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:31:02,750 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-27 23:31:02,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:02,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1807941591, now seen corresponding path program 2 times [2024-11-27 23:31:02,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-27 23:31:02,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964771] [2024-11-27 23:31:02,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:02,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:02,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:02,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL_NO_AM found an infeasible trace [2024-11-27 23:31:02,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964771] [2024-11-27 23:31:02,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964771] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:31:02,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008175373] [2024-11-27 23:31:02,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:02,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:02,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:02,872 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:31:02,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-27 23:31:02,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:02,906 INFO L256 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:31:02,907 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:02,948 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:31:02,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008175373] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:31:02,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:31:02,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 6 [2024-11-27 23:31:02,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510736524] [2024-11-27 23:31:02,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:31:02,994 INFO L204 LassoAnalysis]: Preferences: [2024-11-27 23:31:02,995 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-27 23:31:02,995 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-27 23:31:02,995 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-27 23:31:02,995 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-27 23:31:02,995 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-27 23:31:02,995 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-27 23:31:02,995 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-27 23:31:02,995 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration4_Loop [2024-11-27 23:31:02,995 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-27 23:31:02,995 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-27 23:31:02,997 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-27 23:31:03,009 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-27 23:31:03,015 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-27 23:31:03,118 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-27 23:31:03,118 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-27 23:31:03,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-27 23:31:03,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:03,121 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-27 23:31:03,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2024-11-27 23:31:03,130 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-27 23:31:03,130 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-27 23:31:03,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2024-11-27 23:31:03,160 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2024-11-27 23:31:03,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2024-11-27 23:31:03,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-27 23:31:03,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:03,170 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-27 23:31:03,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2024-11-27 23:31:03,173 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-27 23:31:03,173 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-27 23:31:03,309 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-27 23:31:03,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2024-11-27 23:31:03,314 INFO L204 LassoAnalysis]: Preferences: [2024-11-27 23:31:03,314 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-27 23:31:03,314 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-27 23:31:03,314 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-27 23:31:03,314 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-27 23:31:03,314 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-27 23:31:03,314 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-27 23:31:03,314 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-27 23:31:03,314 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration4_Loop [2024-11-27 23:31:03,314 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-27 23:31:03,314 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-27 23:31:03,316 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-27 23:31:03,328 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-27 23:31:03,333 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-27 23:31:03,406 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-27 23:31:03,406 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-27 23:31:03,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-27 23:31:03,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:03,409 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-27 23:31:03,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2024-11-27 23:31:03,416 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 [2024-11-27 23:31:03,432 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-27 23:31:03,432 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-27 23:31:03,433 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-27 23:31:03,433 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-27 23:31:03,433 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-27 23:31:03,434 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-27 23:31:03,434 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-27 23:31:03,438 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-27 23:31:03,446 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2024-11-27 23:31:03,446 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-27 23:31:03,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-27 23:31:03,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:03,449 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-27 23:31:03,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2024-11-27 23:31:03,457 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-27 23:31:03,457 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-27 23:31:03,457 INFO L474 LassoAnalysis]: Proved termination. [2024-11-27 23:31:03,457 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~K~0#1, ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~K~0#1 + 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2024-11-27 23:31:03,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2024-11-27 23:31:03,472 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-27 23:31:03,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:03,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:03,506 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 23:31:03,507 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:03,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:03,522 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:31:03,523 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:03,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:31:03,552 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-11-27 23:31:03,552 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2024-11-27 23:31:03,564 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 8 states and 9 transitions. Complement of second has 3 states. [2024-11-27 23:31:03,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2024-11-27 23:31:03,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2024-11-27 23:31:03,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2024-11-27 23:31:03,566 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2024-11-27 23:31:03,566 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-27 23:31:03,566 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-27 23:31:03,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:03,598 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 23:31:03,598 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:03,613 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:31:03,613 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:03,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:31:03,641 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2024-11-27 23:31:03,641 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2024-11-27 23:31:03,652 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 8 states and 9 transitions. Complement of second has 3 states. [2024-11-27 23:31:03,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2024-11-27 23:31:03,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2024-11-27 23:31:03,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2024-11-27 23:31:03,654 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2024-11-27 23:31:03,655 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-27 23:31:03,655 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-27 23:31:03,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:03,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:03,682 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 23:31:03,683 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:03,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:03,699 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:31:03,699 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:03,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:31:03,725 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-11-27 23:31:03,725 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2024-11-27 23:31:03,744 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 9 states and 10 transitions. Complement of second has 4 states. [2024-11-27 23:31:03,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2024-11-27 23:31:03,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2024-11-27 23:31:03,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2024-11-27 23:31:03,746 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2024-11-27 23:31:03,746 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-27 23:31:03,746 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2024-11-27 23:31:03,747 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-27 23:31:03,747 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2024-11-27 23:31:03,747 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-27 23:31:03,747 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2024-11-27 23:31:03,748 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-27 23:31:03,748 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2024-11-27 23:31:03,748 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-11-27 23:31:03,748 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-11-27 23:31:03,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-11-27 23:31:03,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-27 23:31:03,749 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-27 23:31:03,749 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-27 23:31:03,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2024-11-27 23:31:03,750 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:31:03,750 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:31:03,750 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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) [2024-11-27 23:31:03,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:31:03,751 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2024-11-27 23:31:03,751 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2024-11-27 23:31:03,751 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-27 23:31:03,751 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2024-11-27 23:31:03,752 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-11-27 23:31:03,752 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-11-27 23:31:03,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-11-27 23:31:03,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-27 23:31:03,752 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-27 23:31:03,752 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-27 23:31:03,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 23:31:03,753 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-27 23:31:03,753 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-11-27 23:31:03,753 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-11-27 23:31:03,753 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-27 23:31:03,753 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-11-27 23:31:03,772 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.11 11:31:03 BoogieIcfgContainer [2024-11-27 23:31:03,772 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-27 23:31:03,773 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 23:31:03,773 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 23:31:03,773 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 23:31:03,774 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:30:59" (3/4) ... [2024-11-27 23:31:03,777 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-27 23:31:03,778 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 23:31:03,781 INFO L158 Benchmark]: Toolchain (without parser) took 5291.44ms. Allocated memory is still 117.4MB. Free memory was 91.0MB in the beginning and 70.8MB in the end (delta: 20.2MB). Peak memory consumption was 23.0MB. Max. memory is 16.1GB. [2024-11-27 23:31:03,782 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 83.9MB. Free memory is still 39.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:31:03,782 INFO L158 Benchmark]: CACSL2BoogieTranslator took 317.73ms. Allocated memory is still 117.4MB. Free memory was 91.0MB in the beginning and 81.2MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 23:31:03,782 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.81ms. Allocated memory is still 117.4MB. Free memory was 81.2MB in the beginning and 80.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:31:03,783 INFO L158 Benchmark]: Boogie Preprocessor took 31.36ms. Allocated memory is still 117.4MB. Free memory was 80.1MB in the beginning and 79.6MB in the end (delta: 557.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:31:03,783 INFO L158 Benchmark]: RCFGBuilder took 273.99ms. Allocated memory is still 117.4MB. Free memory was 79.0MB in the beginning and 71.6MB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 23:31:03,783 INFO L158 Benchmark]: BuchiAutomizer took 4616.25ms. Allocated memory is still 117.4MB. Free memory was 71.1MB in the beginning and 70.8MB in the end (delta: 242.8kB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. [2024-11-27 23:31:03,784 INFO L158 Benchmark]: Witness Printer took 5.35ms. Allocated memory is still 117.4MB. Free memory was 70.8MB in the beginning and 70.8MB in the end (delta: 14.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:31:03,788 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 83.9MB. Free memory is still 39.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 317.73ms. Allocated memory is still 117.4MB. Free memory was 91.0MB in the beginning and 81.2MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.81ms. Allocated memory is still 117.4MB. Free memory was 81.2MB in the beginning and 80.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.36ms. Allocated memory is still 117.4MB. Free memory was 80.1MB in the beginning and 79.6MB in the end (delta: 557.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 273.99ms. Allocated memory is still 117.4MB. Free memory was 79.0MB in the beginning and 71.6MB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 4616.25ms. Allocated memory is still 117.4MB. Free memory was 71.1MB in the beginning and 70.8MB in the end (delta: 242.8kB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. * Witness Printer took 5.35ms. Allocated memory is still 117.4MB. Free memory was 70.8MB in the beginning and 70.8MB in the end (delta: 14.1kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function (K + ((long) -1 * x)) and consists of 4 locations. One deterministic module has affine ranking function (K + ((long) -1 * x)) and consists of 3 locations. One deterministic module has affine ranking function (x + ((long) -1 * K)) and consists of 3 locations. One nondeterministic module has affine ranking function (x + ((long) -1 * K)) and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.5s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 3.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 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 [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 26 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 28 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 45 IncrementalHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 26 mSDtfsCounter, 45 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax180 hnf100 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq166 hnf95 smp62 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 43ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-11-27 23:31:03,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2024-11-27 23:31:04,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-27 23:31:04,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-27 23:31:04,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e635e66-0275-4e99-bd48-9d50446505c4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE