./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 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/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_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU --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 0.2.5-dev-4fc63b2 [2024-10-31 22:06:52,442 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:06:52,534 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-10-31 22:06:52,542 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:06:52,542 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:06:52,577 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:06:52,579 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:06:52,580 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:06:52,580 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:06:52,581 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:06:52,581 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:06:52,585 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:06:52,586 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:06:52,586 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-10-31 22:06:52,586 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-10-31 22:06:52,587 INFO L153 SettingsManager]: * Use old map elimination=false [2024-10-31 22:06:52,587 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-10-31 22:06:52,587 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-10-31 22:06:52,588 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-10-31 22:06:52,588 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:06:52,588 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-10-31 22:06:52,592 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:06:52,593 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:06:52,593 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-10-31 22:06:52,593 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-10-31 22:06:52,593 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-10-31 22:06:52,594 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:06:52,594 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:06:52,594 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:06:52,604 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-10-31 22:06:52,604 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:06:52,605 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:06:52,605 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:06:52,605 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:06:52,606 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:06:52,606 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-10-31 22:06:52,607 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06c9e9e5fbbf1cc74be5b07da6214ee5470bdc6403e06237275b94d0a60c1592 [2024-10-31 22:06:52,909 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:06:52,935 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:06:52,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:06:52,942 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:06:52,943 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:06:52,945 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.c Unable to find full path for "g++" [2024-10-31 22:06:54,922 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:06:55,120 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:06:55,121 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified.c [2024-10-31 22:06:55,128 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/data/23a15340f/bebd3b61856d46b5aec8002fbef2cf93/FLAGd49038769 [2024-10-31 22:06:55,504 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/data/23a15340f/bebd3b61856d46b5aec8002fbef2cf93 [2024-10-31 22:06:55,507 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:06:55,508 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:06:55,510 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:06:55,510 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:06:55,518 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:06:55,519 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:06:55" (1/1) ... [2024-10-31 22:06:55,520 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@585d8c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:55, skipping insertion in model container [2024-10-31 22:06:55,520 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:06:55" (1/1) ... [2024-10-31 22:06:55,543 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:06:55,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:06:55,721 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:06:55,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:06:55,745 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:06:55,746 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:55 WrapperNode [2024-10-31 22:06:55,746 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:06:55,747 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:06:55,747 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:06:55,747 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:06:55,752 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:55" (1/1) ... [2024-10-31 22:06:55,756 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:55" (1/1) ... [2024-10-31 22:06:55,770 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2024-10-31 22:06:55,771 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:06:55,772 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:06:55,772 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:06:55,772 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:06:55,782 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:55" (1/1) ... [2024-10-31 22:06:55,782 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:55" (1/1) ... [2024-10-31 22:06:55,782 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:55" (1/1) ... [2024-10-31 22:06:55,787 INFO L175 MemorySlicer]: No memory access in input program. [2024-10-31 22:06:55,787 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:55" (1/1) ... [2024-10-31 22:06:55,787 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:55" (1/1) ... [2024-10-31 22:06:55,789 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:55" (1/1) ... [2024-10-31 22:06:55,792 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:55" (1/1) ... [2024-10-31 22:06:55,796 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:55" (1/1) ... [2024-10-31 22:06:55,797 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:55" (1/1) ... [2024-10-31 22:06:55,798 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:06:55,798 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:06:55,799 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:06:55,799 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:06:55,799 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:55" (1/1) ... [2024-10-31 22:06:55,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:06:55,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:06:55,832 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:06:55,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-10-31 22:06:55,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:06:55,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:06:55,925 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:06:55,926 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:06:55,971 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-10-31 22:06:55,971 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:06:55,982 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:06:55,983 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-31 22:06:55,983 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:06:55 BoogieIcfgContainer [2024-10-31 22:06:55,984 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:06:55,984 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-10-31 22:06:55,985 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-10-31 22:06:55,991 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-10-31 22:06:55,996 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 22:06:55,996 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 31.10 10:06:55" (1/3) ... [2024-10-31 22:06:55,997 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2bca43a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.10 10:06:55, skipping insertion in model container [2024-10-31 22:06:55,997 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 22:06:55,997 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:55" (2/3) ... [2024-10-31 22:06:55,998 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2bca43a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.10 10:06:55, skipping insertion in model container [2024-10-31 22:06:55,998 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 22:06:55,998 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:06:55" (3/3) ... [2024-10-31 22:06:56,001 INFO L332 chiAutomizerObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig8a-modified.c [2024-10-31 22:06:56,060 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-10-31 22:06:56,060 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-10-31 22:06:56,060 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-10-31 22:06:56,061 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-10-31 22:06:56,061 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-10-31 22:06:56,061 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-10-31 22:06:56,061 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-10-31 22:06:56,062 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-10-31 22:06:56,066 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) [2024-10-31 22:06:56,084 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-10-31 22:06:56,085 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:06:56,085 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:06:56,090 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-31 22:06:56,091 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-10-31 22:06:56,091 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-10-31 22:06:56,091 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) [2024-10-31 22:06:56,092 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-10-31 22:06:56,092 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:06:56,093 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:06:56,093 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-31 22:06:56,093 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-10-31 22:06:56,105 INFO L745 eck$LassoCheckResult]: Stem: 7#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~K~0#1, main_~x~0#1;havoc main_~K~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~K~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~x~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 6#L18-2true [2024-10-31 22:06:56,105 INFO L747 eck$LassoCheckResult]: Loop: 6#L18-2true assume !!(main_~x~0#1 != main_~K~0#1); 3#L18true assume !(main_~x~0#1 > main_~K~0#1);main_~x~0#1 := 1 + main_~x~0#1; 6#L18-2true [2024-10-31 22:06:56,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:56,112 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-10-31 22:06:56,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:56,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62664550] [2024-10-31 22:06:56,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:56,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:56,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:06:56,215 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:06:56,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:06:56,232 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:06:56,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:56,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 1 times [2024-10-31 22:06:56,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:56,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038241956] [2024-10-31 22:06:56,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:56,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:56,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:06:56,248 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:06:56,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:06:56,253 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:06:56,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:56,255 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2024-10-31 22:06:56,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:56,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127249231] [2024-10-31 22:06:56,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:56,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:56,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:06:56,264 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:06:56,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:06:56,270 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:06:56,356 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:06:56,356 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:06:56,357 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:06:56,357 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:06:56,357 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-31 22:06:56,357 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:06:56,358 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:06:56,358 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:06:56,358 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration1_Loop [2024-10-31 22:06:56,358 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:06:56,359 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:06:56,378 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:06:56,416 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:06:56,422 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:06:56,546 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:06:56,547 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-31 22:06:56,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:06:56,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:06:56,553 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:06:56,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-10-31 22:06:56,556 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:06:56,557 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:06:56,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2024-10-31 22:06:56,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:06:56,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:06:56,594 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:06:56,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-10-31 22:06:56,597 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 22:06:56,598 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:06:56,757 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-31 22:06:56,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2024-10-31 22:06:56,761 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:06:56,761 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:06:56,761 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:06:56,761 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:06:56,762 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-31 22:06:56,762 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:06:56,762 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:06:56,762 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:06:56,762 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration1_Loop [2024-10-31 22:06:56,762 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:06:56,763 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:06:56,765 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:06:56,783 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:06:56,788 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:06:56,869 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:06:56,874 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-31 22:06:56,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:06:56,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:06:56,879 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:06:56,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-10-31 22:06:56,883 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 [2024-10-31 22:06:56,898 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:06:56,898 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:06:56,899 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:06:56,899 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:06:56,899 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:06:56,903 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:06:56,903 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:06:56,910 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-31 22:06:56,917 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-31 22:06:56,917 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-31 22:06:56,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:06:56,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:06:56,932 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:06:56,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-10-31 22:06:56,935 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-31 22:06:56,935 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-31 22:06:56,936 INFO L474 LassoAnalysis]: Proved termination. [2024-10-31 22:06:56,936 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 [] [2024-10-31 22:06:56,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2024-10-31 22:06:56,958 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-31 22:06:57,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:57,025 WARN L253 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:06:57,026 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:06:57,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:57,043 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:06:57,044 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:06:57,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:06:57,123 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 [2024-10-31 22:06:57,126 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) [2024-10-31 22:06:57,215 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. [2024-10-31 22:06:57,220 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 [2024-10-31 22:06:57,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2024-10-31 22:06:57,226 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) [2024-10-31 22:06:57,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2024-10-31 22:06:57,229 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 2 letters. [2024-10-31 22:06:57,230 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:06:57,230 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2024-10-31 22:06:57,230 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:06:57,232 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 4 letters. [2024-10-31 22:06:57,233 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:06:57,234 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 24 transitions. [2024-10-31 22:06:57,236 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-10-31 22:06:57,241 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 8 states and 11 transitions. [2024-10-31 22:06:57,242 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2024-10-31 22:06:57,278 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2024-10-31 22:06:57,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2024-10-31 22:06:57,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 22:06:57,280 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2024-10-31 22:06:57,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2024-10-31 22:06:57,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2024-10-31 22:06:57,309 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) [2024-10-31 22:06:57,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2024-10-31 22:06:57,310 INFO L240 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2024-10-31 22:06:57,311 INFO L425 stractBuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2024-10-31 22:06:57,311 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-10-31 22:06:57,311 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2024-10-31 22:06:57,312 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-10-31 22:06:57,312 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:06:57,312 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:06:57,312 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2024-10-31 22:06:57,312 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-10-31 22:06:57,313 INFO L745 eck$LassoCheckResult]: Stem: 66#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 67#L-1 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; 68#L18-2 assume !!(main_~x~0#1 != main_~K~0#1); 61#L18 assume main_~x~0#1 > main_~K~0#1;main_~x~0#1 := main_~x~0#1 - 1; 62#L18-2 [2024-10-31 22:06:57,313 INFO L747 eck$LassoCheckResult]: Loop: 62#L18-2 assume !!(main_~x~0#1 != main_~K~0#1); 65#L18 assume !(main_~x~0#1 > main_~K~0#1);main_~x~0#1 := 1 + main_~x~0#1; 62#L18-2 [2024-10-31 22:06:57,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:57,314 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2024-10-31 22:06:57,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:57,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978663536] [2024-10-31 22:06:57,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:57,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:06:57,321 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:06:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:06:57,326 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:06:57,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:57,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 2 times [2024-10-31 22:06:57,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:57,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202624841] [2024-10-31 22:06:57,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:57,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:57,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:06:57,337 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:06:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:06:57,346 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:06:57,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:57,350 INFO L85 PathProgramCache]: Analyzing trace with hash 889692235, now seen corresponding path program 1 times [2024-10-31 22:06:57,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:57,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195655633] [2024-10-31 22:06:57,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:57,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:57,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:57,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:06:57,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:06:57,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195655633] [2024-10-31 22:06:57,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195655633] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:06:57,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:06:57,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:06:57,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782316518] [2024-10-31 22:06:57,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:06:57,544 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:06:57,544 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:06:57,544 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:06:57,544 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:06:57,544 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-31 22:06:57,545 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:06:57,545 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:06:57,545 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:06:57,545 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration2_Loop [2024-10-31 22:06:57,545 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:06:57,545 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:06:57,547 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:06:57,553 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:06:57,561 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:06:57,634 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:06:57,635 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-31 22:06:57,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:06:57,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:06:57,641 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:06:57,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-10-31 22:06:57,644 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:06:57,644 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:06:57,670 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:06:57,671 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: [] [2024-10-31 22:06:57,689 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2024-10-31 22:06:57,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:06:57,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:06:57,692 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:06:57,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-10-31 22:06:57,695 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:06:57,695 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:06:57,720 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:06:57,720 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: [] [2024-10-31 22:06:57,738 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2024-10-31 22:06:57,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:06:57,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:06:57,742 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:06:57,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-10-31 22:06:57,745 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:06:57,746 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:06:57,784 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2024-10-31 22:06:57,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:06:57,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:06:57,787 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:06:57,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-10-31 22:06:57,791 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 22:06:57,791 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:06:58,010 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-31 22:06:58,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2024-10-31 22:06:58,016 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:06:58,016 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:06:58,016 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:06:58,016 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:06:58,016 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-31 22:06:58,016 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:06:58,016 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:06:58,017 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:06:58,017 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration2_Loop [2024-10-31 22:06:58,017 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:06:58,017 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:06:58,018 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:06:58,030 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:06:58,041 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:06:58,102 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:06:58,102 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-31 22:06:58,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:06:58,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:06:58,106 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:06:58,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-10-31 22:06:58,110 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 [2024-10-31 22:06:58,124 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:06:58,124 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:06:58,124 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:06:58,125 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:06:58,129 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-10-31 22:06:58,129 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-10-31 22:06:58,136 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 22:06:58,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2024-10-31 22:06:58,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:06:58,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:06:58,155 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:06:58,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-10-31 22:06:58,159 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 [2024-10-31 22:06:58,173 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:06:58,174 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:06:58,174 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:06:58,174 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:06:58,174 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:06:58,175 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:06:58,176 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:06:58,181 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-31 22:06:58,186 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2024-10-31 22:06:58,186 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-10-31 22:06:58,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:06:58,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:06:58,189 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:06:58,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-10-31 22:06:58,191 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-31 22:06:58,192 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-31 22:06:58,192 INFO L474 LassoAnalysis]: Proved termination. [2024-10-31 22:06:58,192 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 [] [2024-10-31 22:06:58,211 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2024-10-31 22:06:58,214 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-31 22:06:58,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:58,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:58,248 INFO L255 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:06:58,248 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:06:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:58,266 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 22:06:58,267 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:06:58,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:06:58,296 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 [2024-10-31 22:06:58,296 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) [2024-10-31 22:06:58,325 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. [2024-10-31 22:06:58,326 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 [2024-10-31 22:06:58,327 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) [2024-10-31 22:06:58,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2024-10-31 22:06:58,328 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2024-10-31 22:06:58,329 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:06:58,329 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2024-10-31 22:06:58,329 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:06:58,329 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2024-10-31 22:06:58,330 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:06:58,330 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2024-10-31 22:06:58,331 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-10-31 22:06:58,331 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2024-10-31 22:06:58,332 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2024-10-31 22:06:58,332 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2024-10-31 22:06:58,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2024-10-31 22:06:58,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 22:06:58,333 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2024-10-31 22:06:58,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2024-10-31 22:06:58,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-10-31 22:06:58,334 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) [2024-10-31 22:06:58,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2024-10-31 22:06:58,335 INFO L240 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2024-10-31 22:06:58,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:06:58,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:06:58,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:06:58,340 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) [2024-10-31 22:06:58,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:06:58,361 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2024-10-31 22:06:58,361 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2024-10-31 22:06:58,362 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-10-31 22:06:58,362 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 10 states and 12 transitions. [2024-10-31 22:06:58,363 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2024-10-31 22:06:58,363 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2024-10-31 22:06:58,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 12 transitions. [2024-10-31 22:06:58,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 22:06:58,363 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10 states and 12 transitions. [2024-10-31 22:06:58,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 12 transitions. [2024-10-31 22:06:58,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 7. [2024-10-31 22:06:58,365 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) [2024-10-31 22:06:58,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2024-10-31 22:06:58,365 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 9 transitions. [2024-10-31 22:06:58,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:06:58,367 INFO L425 stractBuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2024-10-31 22:06:58,367 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-10-31 22:06:58,367 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2024-10-31 22:06:58,367 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-10-31 22:06:58,367 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:06:58,368 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:06:58,368 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-10-31 22:06:58,368 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-10-31 22:06:58,368 INFO L745 eck$LassoCheckResult]: Stem: 148#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 149#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~K~0#1, main_~x~0#1;havoc main_~K~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~K~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~x~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 150#L18-2 assume !!(main_~x~0#1 != main_~K~0#1); 144#L18 [2024-10-31 22:06:58,368 INFO L747 eck$LassoCheckResult]: Loop: 144#L18 assume main_~x~0#1 > main_~K~0#1;main_~x~0#1 := main_~x~0#1 - 1; 145#L18-2 assume !!(main_~x~0#1 != main_~K~0#1); 144#L18 [2024-10-31 22:06:58,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:58,370 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2024-10-31 22:06:58,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:58,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974699325] [2024-10-31 22:06:58,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:58,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:58,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:06:58,382 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:06:58,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:06:58,385 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:06:58,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:58,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1406, now seen corresponding path program 1 times [2024-10-31 22:06:58,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:58,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460697702] [2024-10-31 22:06:58,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:58,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:58,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:06:58,400 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:06:58,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:06:58,405 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:06:58,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:58,406 INFO L85 PathProgramCache]: Analyzing trace with hash 28699749, now seen corresponding path program 2 times [2024-10-31 22:06:58,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:58,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420217906] [2024-10-31 22:06:58,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:58,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:58,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:06:58,412 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:06:58,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:06:58,417 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:06:58,447 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:06:58,447 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:06:58,447 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:06:58,448 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:06:58,448 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-31 22:06:58,448 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:06:58,448 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:06:58,448 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:06:58,448 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration3_Loop [2024-10-31 22:06:58,448 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:06:58,448 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:06:58,450 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:06:58,455 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:06:58,466 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:06:58,523 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:06:58,523 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-31 22:06:58,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:06:58,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:06:58,526 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:06:58,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-10-31 22:06:58,529 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:06:58,529 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:06:58,555 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 22:06:58,555 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: [] [2024-10-31 22:06:58,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2024-10-31 22:06:58,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:06:58,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:06:58,577 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:06:58,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-10-31 22:06:58,581 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:06:58,581 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:06:58,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2024-10-31 22:06:58,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:06:58,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:06:58,618 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:06:58,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-10-31 22:06:58,621 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 22:06:58,621 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:06:59,017 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-31 22:06:59,022 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2024-10-31 22:06:59,023 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:06:59,023 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:06:59,023 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:06:59,023 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:06:59,023 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-31 22:06:59,023 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:06:59,023 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:06:59,024 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:06:59,024 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration3_Loop [2024-10-31 22:06:59,024 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:06:59,024 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:06:59,025 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:06:59,057 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:06:59,071 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:06:59,159 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:06:59,159 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-31 22:06:59,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:06:59,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:06:59,161 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:06:59,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-10-31 22:06:59,164 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 [2024-10-31 22:06:59,179 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:06:59,179 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:06:59,179 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:06:59,180 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:06:59,180 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:06:59,181 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:06:59,181 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:06:59,184 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-31 22:06:59,191 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2024-10-31 22:06:59,191 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-10-31 22:06:59,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:06:59,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:06:59,194 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:06:59,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-10-31 22:06:59,197 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-31 22:06:59,197 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-31 22:06:59,197 INFO L474 LassoAnalysis]: Proved termination. [2024-10-31 22:06:59,197 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 [] [2024-10-31 22:06:59,217 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2024-10-31 22:06:59,219 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-31 22:06:59,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:59,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:59,242 INFO L255 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:06:59,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:06:59,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:59,251 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:06:59,252 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:06:59,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:06:59,300 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 [2024-10-31 22:06:59,300 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) [2024-10-31 22:06:59,313 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. [2024-10-31 22:06:59,315 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 [2024-10-31 22:06:59,316 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) [2024-10-31 22:06:59,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2024-10-31 22:06:59,317 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2024-10-31 22:06:59,317 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:06:59,318 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2024-10-31 22:06:59,318 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:06:59,318 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2024-10-31 22:06:59,318 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:06:59,318 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2024-10-31 22:06:59,319 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-10-31 22:06:59,319 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 8 states and 9 transitions. [2024-10-31 22:06:59,319 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2024-10-31 22:06:59,319 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2024-10-31 22:06:59,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2024-10-31 22:06:59,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 22:06:59,320 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 9 transitions. [2024-10-31 22:06:59,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2024-10-31 22:06:59,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2024-10-31 22:06:59,322 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) [2024-10-31 22:06:59,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2024-10-31 22:06:59,323 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 8 transitions. [2024-10-31 22:06:59,323 INFO L425 stractBuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2024-10-31 22:06:59,323 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-10-31 22:06:59,324 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2024-10-31 22:06:59,324 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-10-31 22:06:59,324 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:06:59,324 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:06:59,325 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2024-10-31 22:06:59,328 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-10-31 22:06:59,328 INFO L745 eck$LassoCheckResult]: Stem: 203#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 204#L-1 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; 202#L18-2 assume !!(main_~x~0#1 != main_~K~0#1); 200#L18 assume !(main_~x~0#1 > main_~K~0#1);main_~x~0#1 := 1 + main_~x~0#1; 201#L18-2 assume !!(main_~x~0#1 != main_~K~0#1); 198#L18 [2024-10-31 22:06:59,328 INFO L747 eck$LassoCheckResult]: Loop: 198#L18 assume main_~x~0#1 > main_~K~0#1;main_~x~0#1 := main_~x~0#1 - 1; 199#L18-2 assume !!(main_~x~0#1 != main_~K~0#1); 198#L18 [2024-10-31 22:06:59,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:59,329 INFO L85 PathProgramCache]: Analyzing trace with hash 28699811, now seen corresponding path program 2 times [2024-10-31 22:06:59,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:59,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648924235] [2024-10-31 22:06:59,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:59,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:59,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:06:59,338 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:06:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:06:59,345 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:06:59,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:59,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1406, now seen corresponding path program 2 times [2024-10-31 22:06:59,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:59,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038600350] [2024-10-31 22:06:59,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:59,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:59,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:06:59,356 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:06:59,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:06:59,364 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:06:59,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:59,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1810715040, now seen corresponding path program 2 times [2024-10-31 22:06:59,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:59,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25315159] [2024-10-31 22:06:59,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:59,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:59,458 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:06:59,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:06:59,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25315159] [2024-10-31 22:06:59,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25315159] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:06:59,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:06:59,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:06:59,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792828608] [2024-10-31 22:06:59,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:06:59,488 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:06:59,488 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:06:59,489 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:06:59,489 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:06:59,489 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-31 22:06:59,489 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:06:59,489 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:06:59,489 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:06:59,489 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration4_Loop [2024-10-31 22:06:59,489 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:06:59,489 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:06:59,490 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:06:59,500 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:06:59,504 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:06:59,563 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:06:59,563 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-31 22:06:59,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:06:59,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:06:59,566 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:06:59,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2024-10-31 22:06:59,568 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 22:06:59,568 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:06:59,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2024-10-31 22:06:59,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:06:59,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:06:59,605 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:06:59,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2024-10-31 22:06:59,607 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 22:06:59,607 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 22:06:59,911 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-31 22:06:59,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2024-10-31 22:06:59,914 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 22:06:59,914 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 22:06:59,914 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 22:06:59,914 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 22:06:59,914 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-31 22:06:59,915 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:06:59,915 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 22:06:59,915 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 22:06:59,915 INFO L132 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified.c_Iteration4_Loop [2024-10-31 22:06:59,915 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 22:06:59,915 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 22:06:59,916 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:06:59,933 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:06:59,936 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 22:07:00,002 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 22:07:00,003 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-31 22:07:00,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:07:00,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:07:00,005 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:07:00,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2024-10-31 22:07:00,008 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 [2024-10-31 22:07:00,023 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 22:07:00,023 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 22:07:00,023 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 22:07:00,023 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 22:07:00,023 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 22:07:00,026 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 22:07:00,026 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 22:07:00,030 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-31 22:07:00,035 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-31 22:07:00,035 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-31 22:07:00,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:07:00,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:07:00,038 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:07:00,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2024-10-31 22:07:00,040 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-31 22:07:00,040 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-31 22:07:00,040 INFO L474 LassoAnalysis]: Proved termination. [2024-10-31 22:07:00,041 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 [] [2024-10-31 22:07:00,059 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2024-10-31 22:07:00,060 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-31 22:07:00,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:00,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:00,090 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:07:00,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:07:00,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:00,105 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:07:00,105 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:07:00,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:00,132 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 [2024-10-31 22:07:00,133 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) [2024-10-31 22:07:00,139 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. [2024-10-31 22:07:00,140 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 [2024-10-31 22:07:00,142 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) [2024-10-31 22:07:00,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2024-10-31 22:07:00,143 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2024-10-31 22:07:00,143 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:07:00,144 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-31 22:07:00,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:00,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:00,165 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:07:00,165 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:07:00,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:00,178 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:07:00,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:07:00,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:00,203 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 [2024-10-31 22:07:00,203 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) [2024-10-31 22:07:00,209 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. [2024-10-31 22:07:00,210 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 [2024-10-31 22:07:00,211 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) [2024-10-31 22:07:00,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2024-10-31 22:07:00,211 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2024-10-31 22:07:00,212 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:07:00,212 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-31 22:07:00,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:00,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:00,246 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:07:00,246 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:07:00,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:00,258 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:07:00,258 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:07:00,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2024-10-31 22:07:00,291 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2024-10-31 22:07:00,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:00,309 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 [2024-10-31 22:07:00,309 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) [2024-10-31 22:07:00,328 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. [2024-10-31 22:07:00,329 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 [2024-10-31 22:07:00,329 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) [2024-10-31 22:07:00,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2024-10-31 22:07:00,331 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2024-10-31 22:07:00,332 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:07:00,332 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2024-10-31 22:07:00,332 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:07:00,332 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2024-10-31 22:07:00,332 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 22:07:00,332 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2024-10-31 22:07:00,338 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-31 22:07:00,338 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2024-10-31 22:07:00,338 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-10-31 22:07:00,338 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-10-31 22:07:00,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-10-31 22:07:00,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-31 22:07:00,339 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-31 22:07:00,339 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-31 22:07:00,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:00,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:07:00,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:07:00,340 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:07:00,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:00,340 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2024-10-31 22:07:00,340 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2024-10-31 22:07:00,340 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-31 22:07:00,340 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2024-10-31 22:07:00,340 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-10-31 22:07:00,340 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-10-31 22:07:00,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-10-31 22:07:00,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-31 22:07:00,341 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-31 22:07:00,341 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-31 22:07:00,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-31 22:07:00,341 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-31 22:07:00,341 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-10-31 22:07:00,341 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-10-31 22:07:00,342 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-31 22:07:00,342 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-10-31 22:07:00,344 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2024-10-31 22:07:00,354 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 31.10 10:07:00 BoogieIcfgContainer [2024-10-31 22:07:00,354 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-10-31 22:07:00,355 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-31 22:07:00,355 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-31 22:07:00,355 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-31 22:07:00,356 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:06:55" (3/4) ... [2024-10-31 22:07:00,359 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-10-31 22:07:00,360 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-31 22:07:00,364 INFO L158 Benchmark]: Toolchain (without parser) took 4852.47ms. Allocated memory was 165.7MB in the beginning and 211.8MB in the end (delta: 46.1MB). Free memory was 124.5MB in the beginning and 173.3MB in the end (delta: -48.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:07:00,364 INFO L158 Benchmark]: CDTParser took 0.65ms. Allocated memory is still 165.7MB. Free memory was 131.6MB in the beginning and 131.4MB in the end (delta: 148.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:07:00,365 INFO L158 Benchmark]: CACSL2BoogieTranslator took 236.30ms. Allocated memory is still 165.7MB. Free memory was 124.5MB in the beginning and 113.5MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-31 22:07:00,365 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.57ms. Allocated memory is still 165.7MB. Free memory was 113.0MB in the beginning and 112.0MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-31 22:07:00,365 INFO L158 Benchmark]: Boogie Preprocessor took 26.02ms. Allocated memory is still 165.7MB. Free memory was 112.0MB in the beginning and 110.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-31 22:07:00,366 INFO L158 Benchmark]: RCFGBuilder took 185.28ms. Allocated memory is still 165.7MB. Free memory was 110.4MB in the beginning and 102.0MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-10-31 22:07:00,366 INFO L158 Benchmark]: BuchiAutomizer took 4370.12ms. Allocated memory was 165.7MB in the beginning and 211.8MB in the end (delta: 46.1MB). Free memory was 102.0MB in the beginning and 173.3MB in the end (delta: -71.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:07:00,366 INFO L158 Benchmark]: Witness Printer took 5.30ms. Allocated memory is still 211.8MB. Free memory is still 173.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:07:00,372 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.65ms. Allocated memory is still 165.7MB. Free memory was 131.6MB in the beginning and 131.4MB in the end (delta: 148.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 236.30ms. Allocated memory is still 165.7MB. Free memory was 124.5MB in the beginning and 113.5MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.57ms. Allocated memory is still 165.7MB. Free memory was 113.0MB in the beginning and 112.0MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.02ms. Allocated memory is still 165.7MB. Free memory was 112.0MB in the beginning and 110.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 185.28ms. Allocated memory is still 165.7MB. Free memory was 110.4MB in the beginning and 102.0MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 4370.12ms. Allocated memory was 165.7MB in the beginning and 211.8MB in the end (delta: 46.1MB). Free memory was 102.0MB in the beginning and 173.3MB in the end (delta: -71.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.30ms. Allocated memory is still 211.8MB. Free memory is still 173.3MB. 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 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.3s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 3.3s. 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, 25 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 28 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 46 IncrementalHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 26 mSDtfsCounter, 46 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: 32ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.3s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-10-31 22:07:00,406 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_193ad609-2cd2-4b99-b4c3-9a0f2f43d2f6/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE