./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 30e0974778487c3ac56035f1f8ab25ce73456d36b8987ec761ccfaf99f917331 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 17:14:02,607 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:14:02,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:14:02,669 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:14:02,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:14:02,676 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:14:02,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:14:02,684 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:14:02,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:14:02,692 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:14:02,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:14:02,697 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:14:02,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:14:02,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:14:02,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:14:02,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:14:02,711 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:14:02,714 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:14:02,716 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:14:02,723 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:14:02,727 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:14:02,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:14:02,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:14:02,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:14:02,744 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:14:02,746 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:14:02,746 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:14:02,749 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:14:02,749 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:14:02,752 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:14:02,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:14:02,754 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:14:02,756 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:14:02,758 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:14:02,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:14:02,762 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:14:02,763 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:14:02,763 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:14:02,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:14:02,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:14:02,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:14:02,768 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-21 17:14:02,815 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:14:02,816 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:14:02,816 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:14:02,817 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:14:02,818 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:14:02,819 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:14:02,819 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:14:02,819 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-21 17:14:02,819 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-21 17:14:02,820 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-21 17:14:02,821 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-21 17:14:02,821 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-21 17:14:02,822 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-21 17:14:02,822 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:14:02,822 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 17:14:02,823 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:14:02,823 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:14:02,823 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-21 17:14:02,823 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-21 17:14:02,824 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-21 17:14:02,824 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:14:02,824 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-21 17:14:02,825 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:14:02,825 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-21 17:14:02,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:14:02,825 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:14:02,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:14:02,827 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:14:02,828 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-21 17:14:02,828 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30e0974778487c3ac56035f1f8ab25ce73456d36b8987ec761ccfaf99f917331 [2022-11-21 17:14:03,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:14:03,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:14:03,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:14:03,200 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:14:03,201 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:14:03,202 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c [2022-11-21 17:14:06,439 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:14:06,777 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:14:06,778 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c [2022-11-21 17:14:06,785 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/data/c9ae5ff98/e5efa1d0d7ef45d3bde580a5b9f08407/FLAG0b9b2a533 [2022-11-21 17:14:06,811 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/data/c9ae5ff98/e5efa1d0d7ef45d3bde580a5b9f08407 [2022-11-21 17:14:06,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:14:06,817 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:14:06,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:14:06,821 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:14:06,825 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:14:06,826 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:14:06" (1/1) ... [2022-11-21 17:14:06,827 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a52790c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:14:06, skipping insertion in model container [2022-11-21 17:14:06,827 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:14:06" (1/1) ... [2022-11-21 17:14:06,837 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:14:06,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:14:07,060 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:14:07,066 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:14:07,082 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:14:07,097 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:14:07,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:14:07 WrapperNode [2022-11-21 17:14:07,098 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:14:07,099 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:14:07,099 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:14:07,099 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:14:07,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:14:07" (1/1) ... [2022-11-21 17:14:07,114 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:14:07" (1/1) ... [2022-11-21 17:14:07,133 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2022-11-21 17:14:07,133 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:14:07,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:14:07,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:14:07,134 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:14:07,147 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:14:07" (1/1) ... [2022-11-21 17:14:07,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:14:07" (1/1) ... [2022-11-21 17:14:07,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:14:07" (1/1) ... [2022-11-21 17:14:07,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:14:07" (1/1) ... [2022-11-21 17:14:07,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:14:07" (1/1) ... [2022-11-21 17:14:07,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:14:07" (1/1) ... [2022-11-21 17:14:07,160 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:14:07" (1/1) ... [2022-11-21 17:14:07,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:14:07" (1/1) ... [2022-11-21 17:14:07,162 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:14:07,163 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:14:07,163 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:14:07,163 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:14:07,164 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:14:07" (1/1) ... [2022-11-21 17:14:07,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:07,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:07,209 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:07,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-21 17:14:07,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:14:07,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:14:07,351 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:14:07,354 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:14:07,490 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:14:07,497 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:14:07,498 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-21 17:14:07,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:14:07 BoogieIcfgContainer [2022-11-21 17:14:07,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:14:07,501 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-21 17:14:07,502 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-21 17:14:07,513 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-21 17:14:07,513 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-21 17:14:07,514 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.11 05:14:06" (1/3) ... [2022-11-21 17:14:07,516 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5335e526 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 05:14:07, skipping insertion in model container [2022-11-21 17:14:07,516 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-21 17:14:07,516 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:14:07" (2/3) ... [2022-11-21 17:14:07,519 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5335e526 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 05:14:07, skipping insertion in model container [2022-11-21 17:14:07,519 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-21 17:14:07,519 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:14:07" (3/3) ... [2022-11-21 17:14:07,524 INFO L332 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-Fig1.c [2022-11-21 17:14:07,644 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-21 17:14:07,644 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-21 17:14:07,645 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-21 17:14:07,645 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-21 17:14:07,645 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-21 17:14:07,645 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-21 17:14:07,645 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-21 17:14:07,646 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-21 17:14:07,653 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:14:07,683 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-21 17:14:07,684 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 17:14:07,684 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 17:14:07,692 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-21 17:14:07,692 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-21 17:14:07,692 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-21 17:14:07,693 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:14:07,695 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-21 17:14:07,695 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 17:14:07,696 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 17:14:07,696 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-21 17:14:07,696 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-21 17:14:07,706 INFO L748 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 10#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_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~m~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~m~0#1;main_~y~0#1 := 0;main_~m~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_~m~0#1; 5#L18-2true [2022-11-21 17:14:07,708 INFO L750 eck$LassoCheckResult]: Loop: 5#L18-2true assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 11#L19true assume !(0 != main_#t~nondet1#1);havoc main_#t~nondet1#1; 2#L19-2true main_~y~0#1 := main_~y~0#1 - 1; 5#L18-2true [2022-11-21 17:14:07,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:07,720 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-11-21 17:14:07,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:14:07,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510079452] [2022-11-21 17:14:07,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:14:07,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:14:07,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:07,851 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:14:07,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:07,888 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:14:07,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:07,892 INFO L85 PathProgramCache]: Analyzing trace with hash 41292, now seen corresponding path program 1 times [2022-11-21 17:14:07,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:14:07,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654888739] [2022-11-21 17:14:07,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:14:07,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:14:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:07,920 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:14:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:07,936 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:14:07,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:07,949 INFO L85 PathProgramCache]: Analyzing trace with hash 28700234, now seen corresponding path program 1 times [2022-11-21 17:14:07,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:14:07,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653120300] [2022-11-21 17:14:07,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:14:07,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:14:07,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:07,962 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:14:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:07,978 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:14:08,115 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 17:14:08,116 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 17:14:08,116 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 17:14:08,116 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 17:14:08,116 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-21 17:14:08,116 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:08,117 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 17:14:08,117 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 17:14:08,117 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration1_Loop [2022-11-21 17:14:08,117 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 17:14:08,117 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 17:14:08,153 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:08,183 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:08,198 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:08,215 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:08,228 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:08,341 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 17:14:08,342 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-21 17:14:08,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:08,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:08,352 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:08,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-21 17:14:08,359 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 17:14:08,360 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:14:08,390 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 17:14:08,390 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-21 17:14:08,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:08,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:08,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:08,407 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:08,418 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 17:14:08,418 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:14:08,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-21 17:14:08,441 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 17:14:08,441 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-21 17:14:08,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2022-11-21 17:14:08,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:08,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:08,448 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:08,456 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 17:14:08,456 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:14:08,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-21 17:14:08,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:08,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:08,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:08,487 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:08,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-21 17:14:08,496 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-21 17:14:08,497 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:14:08,536 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-21 17:14:08,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:08,549 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 17:14:08,549 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 17:14:08,549 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 17:14:08,549 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 17:14:08,549 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-21 17:14:08,549 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:08,550 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 17:14:08,550 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 17:14:08,550 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration1_Loop [2022-11-21 17:14:08,550 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 17:14:08,550 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 17:14:08,568 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:08,578 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:08,582 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:08,590 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:08,595 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:08,711 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 17:14:08,716 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-21 17:14:08,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:08,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:08,729 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:08,778 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 [2022-11-21 17:14:08,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-21 17:14:08,809 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 17:14:08,809 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 17:14:08,809 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 17:14:08,810 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 17:14:08,815 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-21 17:14:08,816 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-21 17:14:08,837 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-21 17:14:08,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2022-11-21 17:14:08,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:08,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:08,881 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:08,918 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 [2022-11-21 17:14:08,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-21 17:14:08,934 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 17:14:08,934 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 17:14:08,934 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 17:14:08,934 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 17:14:08,949 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-21 17:14:08,949 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-21 17:14:08,976 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-21 17:14:08,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:08,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:08,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:08,984 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:08,993 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 [2022-11-21 17:14:08,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-21 17:14:09,009 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 17:14:09,009 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 17:14:09,010 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 17:14:09,010 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 17:14:09,010 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 17:14:09,012 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 17:14:09,012 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 17:14:09,022 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-21 17:14:09,028 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-21 17:14:09,028 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-21 17:14:09,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:09,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:09,055 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:09,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-21 17:14:09,057 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-21 17:14:09,057 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-21 17:14:09,057 INFO L513 LassoAnalysis]: Proved termination. [2022-11-21 17:14:09,058 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 2*ULTIMATE.start_main_~y~0#1 + 1 Supporting invariants [] [2022-11-21 17:14:09,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:09,066 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-21 17:14:09,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:09,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 17:14:09,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:14:09,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:09,140 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 17:14:09,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:14:09,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:14:09,211 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 [2022-11-21 17:14:09,213 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 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) [2022-11-21 17:14:09,270 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 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 38 states and 55 transitions. Complement of second has 8 states. [2022-11-21 17:14:09,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-21 17:14:09,288 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) [2022-11-21 17:14:09,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 27 transitions. [2022-11-21 17:14:09,291 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 2 letters. Loop has 3 letters. [2022-11-21 17:14:09,292 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:14:09,292 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 5 letters. Loop has 3 letters. [2022-11-21 17:14:09,292 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:14:09,292 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 2 letters. Loop has 6 letters. [2022-11-21 17:14:09,293 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:14:09,294 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 55 transitions. [2022-11-21 17:14:09,305 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-21 17:14:09,310 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 15 states and 21 transitions. [2022-11-21 17:14:09,311 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2022-11-21 17:14:09,311 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2022-11-21 17:14:09,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 21 transitions. [2022-11-21 17:14:09,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 17:14:09,313 INFO L218 hiAutomatonCegarLoop]: Abstraction has 15 states and 21 transitions. [2022-11-21 17:14:09,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 21 transitions. [2022-11-21 17:14:09,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-21 17:14:09,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.4) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:14:09,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 21 transitions. [2022-11-21 17:14:09,345 INFO L240 hiAutomatonCegarLoop]: Abstraction has 15 states and 21 transitions. [2022-11-21 17:14:09,345 INFO L428 stractBuchiCegarLoop]: Abstraction has 15 states and 21 transitions. [2022-11-21 17:14:09,345 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-21 17:14:09,345 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 21 transitions. [2022-11-21 17:14:09,346 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-21 17:14:09,346 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 17:14:09,346 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 17:14:09,346 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-11-21 17:14:09,347 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-11-21 17:14:09,347 INFO L748 eck$LassoCheckResult]: Stem: 95#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 96#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_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~m~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~m~0#1;main_~y~0#1 := 0;main_~m~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_~m~0#1; 97#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 99#L19 assume 0 != main_#t~nondet1#1;havoc main_#t~nondet1#1; 100#L20-2 assume !!(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := 1 + main_~y~0#1; 101#L20-2 [2022-11-21 17:14:09,347 INFO L750 eck$LassoCheckResult]: Loop: 101#L20-2 assume !!(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := 1 + main_~y~0#1; 101#L20-2 [2022-11-21 17:14:09,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:09,348 INFO L85 PathProgramCache]: Analyzing trace with hash 28699761, now seen corresponding path program 1 times [2022-11-21 17:14:09,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:14:09,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722654085] [2022-11-21 17:14:09,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:14:09,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:14:09,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:09,357 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:14:09,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:09,369 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:14:09,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:09,371 INFO L85 PathProgramCache]: Analyzing trace with hash 54, now seen corresponding path program 1 times [2022-11-21 17:14:09,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:14:09,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586323977] [2022-11-21 17:14:09,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:14:09,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:14:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:09,386 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:14:09,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:09,396 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:14:09,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:09,402 INFO L85 PathProgramCache]: Analyzing trace with hash 889692614, now seen corresponding path program 2 times [2022-11-21 17:14:09,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:14:09,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529988255] [2022-11-21 17:14:09,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:14:09,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:14:09,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:09,417 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:14:09,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:09,426 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:14:09,452 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 17:14:09,453 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 17:14:09,453 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 17:14:09,453 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 17:14:09,453 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-21 17:14:09,454 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:09,454 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 17:14:09,454 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 17:14:09,454 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration2_Loop [2022-11-21 17:14:09,454 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 17:14:09,455 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 17:14:09,456 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:09,461 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:09,470 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:09,474 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:09,528 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 17:14:09,528 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-21 17:14:09,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:09,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:09,530 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:09,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-21 17:14:09,542 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 17:14:09,542 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:14:09,568 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 17:14:09,568 INFO L440 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: [] [2022-11-21 17:14:09,572 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2022-11-21 17:14:09,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:09,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:09,574 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:09,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-21 17:14:09,578 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 17:14:09,578 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:14:09,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:09,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:09,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:09,614 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:09,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-21 17:14:09,622 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-21 17:14:09,622 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:14:09,798 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-21 17:14:09,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:09,802 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 17:14:09,803 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 17:14:09,803 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 17:14:09,803 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 17:14:09,803 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-21 17:14:09,803 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:09,803 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 17:14:09,803 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 17:14:09,803 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration2_Loop [2022-11-21 17:14:09,804 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 17:14:09,804 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 17:14:09,806 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:09,819 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:09,835 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:09,840 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:09,915 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 17:14:09,915 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-21 17:14:09,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:09,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:09,921 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:09,930 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 [2022-11-21 17:14:09,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-21 17:14:09,946 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 17:14:09,947 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 17:14:09,947 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 17:14:09,947 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 17:14:09,957 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-21 17:14:09,957 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-21 17:14:09,973 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-21 17:14:09,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:09,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:09,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:09,982 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:09,998 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 [2022-11-21 17:14:10,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-21 17:14:10,011 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 17:14:10,011 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 17:14:10,011 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 17:14:10,011 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 17:14:10,011 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 17:14:10,012 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 17:14:10,012 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 17:14:10,023 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-21 17:14:10,027 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-21 17:14:10,027 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-21 17:14:10,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:10,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:10,030 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:10,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-21 17:14:10,032 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-21 17:14:10,032 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-21 17:14:10,032 INFO L513 LassoAnalysis]: Proved termination. [2022-11-21 17:14:10,032 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1, ULTIMATE.start_main_~m~0#1) = -2*ULTIMATE.start_main_~y~0#1 + 2*ULTIMATE.start_main_~m~0#1 + 1 Supporting invariants [] [2022-11-21 17:14:10,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:10,037 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-21 17:14:10,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:10,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:10,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 17:14:10,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:14:10,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:10,092 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 17:14:10,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:14:10,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:14:10,093 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-11-21 17:14:10,094 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 21 transitions. cyclomatic complexity: 8 Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2022-11-21 17:14:10,109 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 21 transitions. cyclomatic complexity: 8. Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 26 states and 40 transitions. Complement of second has 6 states. [2022-11-21 17:14:10,110 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 [2022-11-21 17:14:10,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2022-11-21 17:14:10,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2022-11-21 17:14:10,112 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 5 letters. Loop has 1 letters. [2022-11-21 17:14:10,112 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:14:10,112 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 6 letters. Loop has 1 letters. [2022-11-21 17:14:10,112 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:14:10,112 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 5 letters. Loop has 2 letters. [2022-11-21 17:14:10,113 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:14:10,113 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 40 transitions. [2022-11-21 17:14:10,114 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-21 17:14:10,115 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 19 states and 27 transitions. [2022-11-21 17:14:10,115 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2022-11-21 17:14:10,116 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2022-11-21 17:14:10,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 27 transitions. [2022-11-21 17:14:10,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 17:14:10,116 INFO L218 hiAutomatonCegarLoop]: Abstraction has 19 states and 27 transitions. [2022-11-21 17:14:10,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 27 transitions. [2022-11-21 17:14:10,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2022-11-21 17:14:10,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 16 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:14:10,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 25 transitions. [2022-11-21 17:14:10,119 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17 states and 25 transitions. [2022-11-21 17:14:10,119 INFO L428 stractBuchiCegarLoop]: Abstraction has 17 states and 25 transitions. [2022-11-21 17:14:10,119 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-21 17:14:10,119 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 25 transitions. [2022-11-21 17:14:10,120 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-21 17:14:10,120 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 17:14:10,121 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 17:14:10,122 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2022-11-21 17:14:10,122 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2022-11-21 17:14:10,123 INFO L748 eck$LassoCheckResult]: Stem: 174#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 175#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_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~m~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~m~0#1;main_~y~0#1 := 0;main_~m~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_~m~0#1; 184#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 178#L19 assume 0 != main_#t~nondet1#1;havoc main_#t~nondet1#1; 186#L20-2 assume !!(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := 1 + main_~y~0#1; 185#L20-2 assume !(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 180#L20-3 [2022-11-21 17:14:10,123 INFO L750 eck$LassoCheckResult]: Loop: 180#L20-3 main_~x~0#1 := main_~x~0#1 - 1; 170#L19-2 main_~y~0#1 := main_~y~0#1 - 1; 171#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 176#L19 assume 0 != main_#t~nondet1#1;havoc main_#t~nondet1#1; 179#L20-2 assume !(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 180#L20-3 [2022-11-21 17:14:10,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:10,124 INFO L85 PathProgramCache]: Analyzing trace with hash 889692612, now seen corresponding path program 1 times [2022-11-21 17:14:10,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:14:10,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090889681] [2022-11-21 17:14:10,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:14:10,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:14:10,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:10,131 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:14:10,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:10,138 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:14:10,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:10,139 INFO L85 PathProgramCache]: Analyzing trace with hash 54498765, now seen corresponding path program 1 times [2022-11-21 17:14:10,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:14:10,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840247790] [2022-11-21 17:14:10,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:14:10,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:14:10,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:10,145 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:14:10,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:10,151 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:14:10,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:10,151 INFO L85 PathProgramCache]: Analyzing trace with hash -476736022, now seen corresponding path program 1 times [2022-11-21 17:14:10,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:14:10,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330435454] [2022-11-21 17:14:10,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:14:10,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:14:10,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:10,177 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:14:10,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:10,193 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:14:10,274 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 17:14:10,274 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 17:14:10,274 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 17:14:10,274 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 17:14:10,275 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-21 17:14:10,275 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:10,276 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 17:14:10,277 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 17:14:10,277 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration3_Loop [2022-11-21 17:14:10,277 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 17:14:10,277 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 17:14:10,288 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:10,292 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:10,303 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:10,317 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:10,329 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:10,429 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 17:14:10,429 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-21 17:14:10,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:10,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:10,431 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:10,441 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 17:14:10,442 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:14:10,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-21 17:14:10,491 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 17:14:10,491 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1#1=-1} Honda state: {ULTIMATE.start_main_#t~nondet1#1=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-21 17:14:10,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:10,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:10,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:10,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:10,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:10,515 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:10,521 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 17:14:10,521 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:14:10,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-21 17:14:10,549 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 17:14:10,549 INFO L440 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: [] [2022-11-21 17:14:10,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:10,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:10,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:10,568 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:10,582 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 17:14:10,583 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:14:10,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-11-21 17:14:10,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:10,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:10,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:10,628 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:10,632 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-21 17:14:10,632 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:14:10,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-21 17:14:10,776 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-21 17:14:10,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:10,781 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 17:14:10,782 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 17:14:10,782 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 17:14:10,782 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 17:14:10,782 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-21 17:14:10,782 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:10,782 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 17:14:10,782 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 17:14:10,782 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration3_Loop [2022-11-21 17:14:10,783 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 17:14:10,783 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 17:14:10,785 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:10,796 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:10,812 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:10,819 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:10,826 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:10,958 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 17:14:10,958 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-21 17:14:10,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:10,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:10,960 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:10,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-21 17:14:10,973 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 [2022-11-21 17:14:10,988 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 17:14:10,988 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 17:14:10,988 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 17:14:10,989 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-11-21 17:14:10,989 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 17:14:10,990 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-11-21 17:14:10,990 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 17:14:11,006 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-21 17:14:11,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:11,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:11,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:11,014 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:11,025 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 [2022-11-21 17:14:11,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-11-21 17:14:11,040 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 17:14:11,041 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 17:14:11,041 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 17:14:11,041 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-11-21 17:14:11,041 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 17:14:11,044 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-11-21 17:14:11,044 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 17:14:11,072 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-21 17:14:11,077 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-21 17:14:11,077 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-21 17:14:11,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:11,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:11,079 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:11,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-21 17:14:11,085 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-21 17:14:11,085 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-21 17:14:11,085 INFO L513 LassoAnalysis]: Proved termination. [2022-11-21 17:14:11,086 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2022-11-21 17:14:11,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:11,096 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-21 17:14:11,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:11,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:11,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 17:14:11,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:14:11,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:11,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 17:14:11,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:14:11,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:14:11,223 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-11-21 17:14:11,223 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 25 transitions. cyclomatic complexity: 11 Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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) [2022-11-21 17:14:11,276 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 25 transitions. cyclomatic complexity: 11. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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) Result 47 states and 69 transitions. Complement of second has 8 states. [2022-11-21 17:14:11,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-21 17:14:11,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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) [2022-11-21 17:14:11,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 24 transitions. [2022-11-21 17:14:11,281 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 6 letters. Loop has 5 letters. [2022-11-21 17:14:11,282 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:14:11,282 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 11 letters. Loop has 5 letters. [2022-11-21 17:14:11,282 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:14:11,283 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 6 letters. Loop has 10 letters. [2022-11-21 17:14:11,283 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:14:11,284 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47 states and 69 transitions. [2022-11-21 17:14:11,291 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-21 17:14:11,293 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 47 states to 33 states and 47 transitions. [2022-11-21 17:14:11,293 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2022-11-21 17:14:11,295 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2022-11-21 17:14:11,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 47 transitions. [2022-11-21 17:14:11,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 17:14:11,296 INFO L218 hiAutomatonCegarLoop]: Abstraction has 33 states and 47 transitions. [2022-11-21 17:14:11,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states and 47 transitions. [2022-11-21 17:14:11,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2022-11-21 17:14:11,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 31 states have (on average 1.4516129032258065) internal successors, (45), 30 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:14:11,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 45 transitions. [2022-11-21 17:14:11,306 INFO L240 hiAutomatonCegarLoop]: Abstraction has 31 states and 45 transitions. [2022-11-21 17:14:11,306 INFO L428 stractBuchiCegarLoop]: Abstraction has 31 states and 45 transitions. [2022-11-21 17:14:11,307 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-21 17:14:11,307 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 45 transitions. [2022-11-21 17:14:11,310 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-21 17:14:11,311 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 17:14:11,311 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 17:14:11,312 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1] [2022-11-21 17:14:11,312 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2022-11-21 17:14:11,313 INFO L748 eck$LassoCheckResult]: Stem: 296#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 297#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_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~m~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~m~0#1;main_~y~0#1 := 0;main_~m~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_~m~0#1; 298#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 299#L19 assume 0 != main_#t~nondet1#1;havoc main_#t~nondet1#1; 305#L20-2 assume !(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 306#L20-3 main_~x~0#1 := main_~x~0#1 - 1; 294#L19-2 main_~y~0#1 := main_~y~0#1 - 1; 295#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 302#L19 assume 0 != main_#t~nondet1#1;havoc main_#t~nondet1#1; 303#L20-2 assume !!(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := 1 + main_~y~0#1; 304#L20-2 assume !(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 309#L20-3 [2022-11-21 17:14:11,313 INFO L750 eck$LassoCheckResult]: Loop: 309#L20-3 main_~x~0#1 := main_~x~0#1 - 1; 292#L19-2 main_~y~0#1 := main_~y~0#1 - 1; 293#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 310#L19 assume 0 != main_#t~nondet1#1;havoc main_#t~nondet1#1; 311#L20-2 assume !(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 309#L20-3 [2022-11-21 17:14:11,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:11,314 INFO L85 PathProgramCache]: Analyzing trace with hash -2076867052, now seen corresponding path program 2 times [2022-11-21 17:14:11,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:14:11,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108433245] [2022-11-21 17:14:11,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:14:11,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:14:11,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:11,465 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:14:11,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:14:11,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108433245] [2022-11-21 17:14:11,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108433245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:14:11,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:14:11,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 17:14:11,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84474199] [2022-11-21 17:14:11,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:14:11,473 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-21 17:14:11,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:11,474 INFO L85 PathProgramCache]: Analyzing trace with hash 54498765, now seen corresponding path program 2 times [2022-11-21 17:14:11,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:14:11,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488998540] [2022-11-21 17:14:11,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:14:11,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:14:11,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:11,495 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:14:11,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:11,510 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:14:11,583 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 17:14:11,584 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 17:14:11,584 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 17:14:11,584 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 17:14:11,584 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-21 17:14:11,585 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:11,585 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 17:14:11,585 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 17:14:11,585 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration4_Loop [2022-11-21 17:14:11,585 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 17:14:11,585 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 17:14:11,588 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:11,594 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:11,598 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:11,612 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:11,618 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:11,751 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 17:14:11,751 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-21 17:14:11,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:11,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:11,757 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:11,763 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 17:14:11,763 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:14:11,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-21 17:14:11,793 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 17:14:11,794 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-21 17:14:11,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:11,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:11,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:11,805 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:11,808 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 17:14:11,809 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:14:11,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-21 17:14:11,831 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 17:14:11,831 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1#1=-1} Honda state: {ULTIMATE.start_main_#t~nondet1#1=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-21 17:14:11,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:11,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:11,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:11,843 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:11,847 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 17:14:11,848 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:14:11,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-11-21 17:14:11,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:11,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:11,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:11,885 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:11,889 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-21 17:14:11,889 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:14:11,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-11-21 17:14:12,028 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-21 17:14:12,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2022-11-21 17:14:12,032 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 17:14:12,032 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 17:14:12,032 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 17:14:12,032 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 17:14:12,033 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-21 17:14:12,033 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:12,033 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 17:14:12,033 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 17:14:12,033 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration4_Loop [2022-11-21 17:14:12,033 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 17:14:12,033 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 17:14:12,035 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:12,045 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:12,049 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:12,065 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:12,075 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:12,178 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 17:14:12,179 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-21 17:14:12,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:12,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:12,180 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:12,189 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 [2022-11-21 17:14:12,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-11-21 17:14:12,204 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 17:14:12,204 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 17:14:12,204 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 17:14:12,204 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-11-21 17:14:12,204 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 17:14:12,207 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-11-21 17:14:12,207 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 17:14:12,232 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-21 17:14:12,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2022-11-21 17:14:12,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:12,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:12,237 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:12,242 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 [2022-11-21 17:14:12,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-11-21 17:14:12,256 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 17:14:12,256 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 17:14:12,256 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 17:14:12,256 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 17:14:12,258 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-21 17:14:12,259 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-21 17:14:12,288 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-21 17:14:12,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:12,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:12,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:12,299 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:12,309 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 [2022-11-21 17:14:12,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-11-21 17:14:12,324 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 17:14:12,325 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 17:14:12,325 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 17:14:12,325 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-11-21 17:14:12,325 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 17:14:12,328 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-11-21 17:14:12,328 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 17:14:12,344 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-21 17:14:12,349 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-21 17:14:12,349 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-21 17:14:12,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:12,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:12,351 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:12,357 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-21 17:14:12,357 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-21 17:14:12,357 INFO L513 LassoAnalysis]: Proved termination. [2022-11-21 17:14:12,357 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2022-11-21 17:14:12,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-11-21 17:14:12,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:12,368 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-21 17:14:12,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:12,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 17:14:12,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:14:12,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:12,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 17:14:12,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:14:12,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:14:12,476 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-11-21 17:14:12,476 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 45 transitions. cyclomatic complexity: 20 Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:14:12,509 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 45 transitions. cyclomatic complexity: 20. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 44 states and 62 transitions. Complement of second has 7 states. [2022-11-21 17:14:12,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-21 17:14:12,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:14:12,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2022-11-21 17:14:12,514 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 11 letters. Loop has 5 letters. [2022-11-21 17:14:12,514 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:14:12,515 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-21 17:14:12,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:12,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:12,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 17:14:12,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:14:12,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:12,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 17:14:12,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:14:12,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:14:12,626 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2022-11-21 17:14:12,627 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 45 transitions. cyclomatic complexity: 20 Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:14:12,690 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 45 transitions. cyclomatic complexity: 20. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 69 states and 98 transitions. Complement of second has 10 states. [2022-11-21 17:14:12,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2022-11-21 17:14:12,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:14:12,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 28 transitions. [2022-11-21 17:14:12,695 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 28 transitions. Stem has 11 letters. Loop has 5 letters. [2022-11-21 17:14:12,697 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:14:12,697 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 28 transitions. Stem has 16 letters. Loop has 5 letters. [2022-11-21 17:14:12,698 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:14:12,699 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 28 transitions. Stem has 11 letters. Loop has 10 letters. [2022-11-21 17:14:12,700 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:14:12,700 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 69 states and 98 transitions. [2022-11-21 17:14:12,709 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2022-11-21 17:14:12,710 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 69 states to 62 states and 86 transitions. [2022-11-21 17:14:12,711 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2022-11-21 17:14:12,711 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2022-11-21 17:14:12,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 86 transitions. [2022-11-21 17:14:12,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 17:14:12,712 INFO L218 hiAutomatonCegarLoop]: Abstraction has 62 states and 86 transitions. [2022-11-21 17:14:12,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states and 86 transitions. [2022-11-21 17:14:12,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 51. [2022-11-21 17:14:12,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 51 states have (on average 1.4705882352941178) internal successors, (75), 50 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:14:12,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 75 transitions. [2022-11-21 17:14:12,720 INFO L240 hiAutomatonCegarLoop]: Abstraction has 51 states and 75 transitions. [2022-11-21 17:14:12,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:14:12,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:14:12,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:14:12,725 INFO L87 Difference]: Start difference. First operand 51 states and 75 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2022-11-21 17:14:12,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:14:12,758 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2022-11-21 17:14:12,758 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 58 transitions. [2022-11-21 17:14:12,760 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2022-11-21 17:14:12,763 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 35 states and 49 transitions. [2022-11-21 17:14:12,763 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2022-11-21 17:14:12,763 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2022-11-21 17:14:12,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 49 transitions. [2022-11-21 17:14:12,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 17:14:12,764 INFO L218 hiAutomatonCegarLoop]: Abstraction has 35 states and 49 transitions. [2022-11-21 17:14:12,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 49 transitions. [2022-11-21 17:14:12,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-11-21 17:14:12,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 35 states have (on average 1.4) internal successors, (49), 34 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:14:12,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 49 transitions. [2022-11-21 17:14:12,775 INFO L240 hiAutomatonCegarLoop]: Abstraction has 35 states and 49 transitions. [2022-11-21 17:14:12,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:14:12,777 INFO L428 stractBuchiCegarLoop]: Abstraction has 35 states and 49 transitions. [2022-11-21 17:14:12,778 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-21 17:14:12,778 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 49 transitions. [2022-11-21 17:14:12,779 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2022-11-21 17:14:12,779 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 17:14:12,779 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 17:14:12,780 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-11-21 17:14:12,780 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2022-11-21 17:14:12,780 INFO L748 eck$LassoCheckResult]: Stem: 668#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 669#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~m~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~m~0#1;main_~y~0#1 := 0;main_~m~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_~m~0#1; 681#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 678#L19 assume 0 != main_#t~nondet1#1;havoc main_#t~nondet1#1; 679#L20-2 assume !!(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := 1 + main_~y~0#1; 695#L20-2 assume !(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 676#L20-3 main_~x~0#1 := main_~x~0#1 - 1; 677#L19-2 main_~y~0#1 := main_~y~0#1 - 1; 694#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 680#L19 assume 0 != main_#t~nondet1#1;havoc main_#t~nondet1#1; 672#L20-2 [2022-11-21 17:14:12,780 INFO L750 eck$LassoCheckResult]: Loop: 672#L20-2 assume !!(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := 1 + main_~y~0#1; 673#L20-2 assume !(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 684#L20-3 main_~x~0#1 := main_~x~0#1 - 1; 664#L19-2 main_~y~0#1 := main_~y~0#1 - 1; 665#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 670#L19 assume 0 != main_#t~nondet1#1;havoc main_#t~nondet1#1; 672#L20-2 [2022-11-21 17:14:12,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:12,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1093000075, now seen corresponding path program 3 times [2022-11-21 17:14:12,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:14:12,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504759732] [2022-11-21 17:14:12,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:14:12,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:14:12,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:12,800 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:14:12,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:12,813 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:14:12,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:12,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1566202598, now seen corresponding path program 1 times [2022-11-21 17:14:12,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:14:12,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75008885] [2022-11-21 17:14:12,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:14:12,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:14:12,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:12,840 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:14:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:12,844 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:14:12,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:12,845 INFO L85 PathProgramCache]: Analyzing trace with hash -410261776, now seen corresponding path program 4 times [2022-11-21 17:14:12,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:14:12,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714553763] [2022-11-21 17:14:12,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:14:12,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:14:12,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:12,863 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:14:12,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:12,916 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:14:12,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:12,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:13,016 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 17:14:13,017 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 17:14:13,017 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 17:14:13,017 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 17:14:13,017 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-21 17:14:13,017 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:13,017 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 17:14:13,018 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 17:14:13,018 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration5_Loop [2022-11-21 17:14:13,018 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 17:14:13,018 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 17:14:13,023 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:13,030 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:13,034 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:13,039 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:13,057 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:13,062 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:13,170 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 17:14:13,171 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-21 17:14:13,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:13,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:13,172 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:13,178 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 17:14:13,179 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:14:13,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-11-21 17:14:13,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:13,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:13,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:13,216 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:13,225 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-21 17:14:13,225 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:14:13,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-11-21 17:14:13,320 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-21 17:14:13,324 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2022-11-21 17:14:13,324 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 17:14:13,324 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 17:14:13,324 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 17:14:13,325 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 17:14:13,325 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-21 17:14:13,325 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:13,325 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 17:14:13,325 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 17:14:13,325 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration5_Loop [2022-11-21 17:14:13,325 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 17:14:13,325 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 17:14:13,327 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:13,340 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:13,344 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:13,357 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:13,361 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:13,364 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:13,459 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 17:14:13,459 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-21 17:14:13,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:13,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:13,461 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:13,471 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 [2022-11-21 17:14:13,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-11-21 17:14:13,485 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 17:14:13,485 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 17:14:13,486 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 17:14:13,486 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 17:14:13,486 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 17:14:13,488 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 17:14:13,488 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 17:14:13,498 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-21 17:14:13,502 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-21 17:14:13,502 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-21 17:14:13,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:13,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:13,505 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:13,513 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-21 17:14:13,513 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-21 17:14:13,513 INFO L513 LassoAnalysis]: Proved termination. [2022-11-21 17:14:13,513 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2022-11-21 17:14:13,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-11-21 17:14:13,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:13,519 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-21 17:14:13,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:13,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:13,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 17:14:13,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:14:13,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:13,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 17:14:13,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:14:13,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:14:13,609 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-11-21 17:14:13,609 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 49 transitions. cyclomatic complexity: 20 Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:14:13,636 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 49 transitions. cyclomatic complexity: 20. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 100 states and 143 transitions. Complement of second has 6 states. [2022-11-21 17:14:13,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-21 17:14:13,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:14:13,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2022-11-21 17:14:13,638 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 10 letters. Loop has 6 letters. [2022-11-21 17:14:13,638 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:14:13,638 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 16 letters. Loop has 6 letters. [2022-11-21 17:14:13,638 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:14:13,638 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 10 letters. Loop has 12 letters. [2022-11-21 17:14:13,639 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:14:13,639 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 100 states and 143 transitions. [2022-11-21 17:14:13,640 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 7 [2022-11-21 17:14:13,641 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 100 states to 67 states and 96 transitions. [2022-11-21 17:14:13,642 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2022-11-21 17:14:13,642 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2022-11-21 17:14:13,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 96 transitions. [2022-11-21 17:14:13,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 17:14:13,642 INFO L218 hiAutomatonCegarLoop]: Abstraction has 67 states and 96 transitions. [2022-11-21 17:14:13,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states and 96 transitions. [2022-11-21 17:14:13,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 46. [2022-11-21 17:14:13,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 46 states have (on average 1.4782608695652173) internal successors, (68), 45 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:14:13,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 68 transitions. [2022-11-21 17:14:13,647 INFO L240 hiAutomatonCegarLoop]: Abstraction has 46 states and 68 transitions. [2022-11-21 17:14:13,647 INFO L428 stractBuchiCegarLoop]: Abstraction has 46 states and 68 transitions. [2022-11-21 17:14:13,647 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-21 17:14:13,647 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 46 states and 68 transitions. [2022-11-21 17:14:13,648 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2022-11-21 17:14:13,648 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 17:14:13,648 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 17:14:13,649 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-11-21 17:14:13,649 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-11-21 17:14:13,649 INFO L748 eck$LassoCheckResult]: Stem: 874#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 875#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~m~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~m~0#1;main_~y~0#1 := 0;main_~m~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_~m~0#1; 889#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 884#L19 assume 0 != main_#t~nondet1#1;havoc main_#t~nondet1#1; 878#L20-2 assume !!(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := 1 + main_~y~0#1; 879#L20-2 assume !(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 903#L20-3 main_~x~0#1 := main_~x~0#1 - 1; 899#L19-2 main_~y~0#1 := main_~y~0#1 - 1; 900#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 911#L19 assume 0 != main_#t~nondet1#1;havoc main_#t~nondet1#1; 890#L20-2 [2022-11-21 17:14:13,650 INFO L750 eck$LassoCheckResult]: Loop: 890#L20-2 assume !!(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := 1 + main_~y~0#1; 890#L20-2 [2022-11-21 17:14:13,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:13,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1093000075, now seen corresponding path program 5 times [2022-11-21 17:14:13,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:14:13,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116027667] [2022-11-21 17:14:13,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:14:13,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:14:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:13,657 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:14:13,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:13,662 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:14:13,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:13,663 INFO L85 PathProgramCache]: Analyzing trace with hash 54, now seen corresponding path program 2 times [2022-11-21 17:14:13,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:14:13,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788082475] [2022-11-21 17:14:13,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:14:13,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:14:13,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:13,667 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:14:13,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:13,669 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:14:13,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:13,670 INFO L85 PathProgramCache]: Analyzing trace with hash -476736020, now seen corresponding path program 6 times [2022-11-21 17:14:13,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:14:13,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287987670] [2022-11-21 17:14:13,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:14:13,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:14:13,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:13,677 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:14:13,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:13,682 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:14:13,703 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 17:14:13,703 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 17:14:13,703 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 17:14:13,703 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 17:14:13,703 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-21 17:14:13,704 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:13,704 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 17:14:13,704 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 17:14:13,704 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration6_Loop [2022-11-21 17:14:13,704 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 17:14:13,704 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 17:14:13,705 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:13,709 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:13,714 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:13,721 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:13,769 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 17:14:13,770 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-21 17:14:13,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:13,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:13,771 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:13,777 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 17:14:13,778 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:14:13,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-11-21 17:14:13,804 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 17:14:13,804 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-21 17:14:13,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:13,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:13,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:13,810 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:13,816 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 17:14:13,816 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:14:13,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-11-21 17:14:13,842 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 17:14:13,843 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-21 17:14:13,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:13,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:13,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:13,850 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:13,855 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 17:14:13,855 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:14:13,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-11-21 17:14:13,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2022-11-21 17:14:13,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:13,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:13,875 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:13,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-11-21 17:14:13,878 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-21 17:14:13,879 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:14:14,035 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-21 17:14:14,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2022-11-21 17:14:14,039 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 17:14:14,040 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 17:14:14,040 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 17:14:14,040 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 17:14:14,040 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-21 17:14:14,040 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:14,040 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 17:14:14,040 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 17:14:14,040 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration6_Loop [2022-11-21 17:14:14,040 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 17:14:14,040 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 17:14:14,041 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:14,047 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:14,054 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:14,058 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:14,114 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 17:14:14,114 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-21 17:14:14,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:14,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:14,116 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:14,121 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 [2022-11-21 17:14:14,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2022-11-21 17:14:14,135 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 17:14:14,136 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 17:14:14,136 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 17:14:14,136 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 17:14:14,139 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-21 17:14:14,139 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-21 17:14:14,156 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-21 17:14:14,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:14,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:14,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:14,162 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:14,170 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 [2022-11-21 17:14:14,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2022-11-21 17:14:14,185 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 17:14:14,186 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 17:14:14,186 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 17:14:14,186 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 17:14:14,186 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 17:14:14,187 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 17:14:14,187 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 17:14:14,208 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-21 17:14:14,212 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-21 17:14:14,212 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-21 17:14:14,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:14,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:14,214 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:14,228 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-21 17:14:14,229 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-21 17:14:14,229 INFO L513 LassoAnalysis]: Proved termination. [2022-11-21 17:14:14,229 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1, ULTIMATE.start_main_~m~0#1) = -2*ULTIMATE.start_main_~y~0#1 + 2*ULTIMATE.start_main_~m~0#1 + 1 Supporting invariants [] [2022-11-21 17:14:14,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2022-11-21 17:14:14,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:14,237 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-21 17:14:14,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:14,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:14,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 17:14:14,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:14:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:14,293 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 17:14:14,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:14:14,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:14:14,295 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-11-21 17:14:14,295 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 46 states and 68 transitions. cyclomatic complexity: 30 Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2022-11-21 17:14:14,310 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 46 states and 68 transitions. cyclomatic complexity: 30. Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) Result 52 states and 75 transitions. Complement of second has 5 states. [2022-11-21 17:14:14,311 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 [2022-11-21 17:14:14,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2022-11-21 17:14:14,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2022-11-21 17:14:14,315 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 10 letters. Loop has 1 letters. [2022-11-21 17:14:14,315 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:14:14,315 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-21 17:14:14,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:14,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:14,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 17:14:14,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:14:14,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:14,369 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 17:14:14,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:14:14,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:14:14,371 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2022-11-21 17:14:14,371 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 46 states and 68 transitions. cyclomatic complexity: 30 Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2022-11-21 17:14:14,392 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 46 states and 68 transitions. cyclomatic complexity: 30. Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) Result 52 states and 75 transitions. Complement of second has 5 states. [2022-11-21 17:14:14,392 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 [2022-11-21 17:14:14,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2022-11-21 17:14:14,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2022-11-21 17:14:14,394 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 10 letters. Loop has 1 letters. [2022-11-21 17:14:14,394 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:14:14,395 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-21 17:14:14,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:14,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:14,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 17:14:14,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:14:14,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:14,436 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 17:14:14,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:14:14,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:14:14,438 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 1 loop predicates [2022-11-21 17:14:14,438 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 46 states and 68 transitions. cyclomatic complexity: 30 Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2022-11-21 17:14:14,451 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 46 states and 68 transitions. cyclomatic complexity: 30. Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) Result 63 states and 88 transitions. Complement of second has 4 states. [2022-11-21 17:14:14,451 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 [2022-11-21 17:14:14,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2022-11-21 17:14:14,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 13 transitions. [2022-11-21 17:14:14,453 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 10 letters. Loop has 1 letters. [2022-11-21 17:14:14,453 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:14:14,454 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 11 letters. Loop has 1 letters. [2022-11-21 17:14:14,455 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:14:14,455 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 10 letters. Loop has 2 letters. [2022-11-21 17:14:14,456 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:14:14,456 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 88 transitions. [2022-11-21 17:14:14,458 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-21 17:14:14,461 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 45 states and 62 transitions. [2022-11-21 17:14:14,462 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-11-21 17:14:14,462 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-11-21 17:14:14,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 62 transitions. [2022-11-21 17:14:14,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 17:14:14,462 INFO L218 hiAutomatonCegarLoop]: Abstraction has 45 states and 62 transitions. [2022-11-21 17:14:14,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 62 transitions. [2022-11-21 17:14:14,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2022-11-21 17:14:14,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 38 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:14:14,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 54 transitions. [2022-11-21 17:14:14,474 INFO L240 hiAutomatonCegarLoop]: Abstraction has 39 states and 54 transitions. [2022-11-21 17:14:14,474 INFO L428 stractBuchiCegarLoop]: Abstraction has 39 states and 54 transitions. [2022-11-21 17:14:14,474 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-11-21 17:14:14,474 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 54 transitions. [2022-11-21 17:14:14,475 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-21 17:14:14,475 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 17:14:14,475 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 17:14:14,476 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 2, 1, 1, 1] [2022-11-21 17:14:14,476 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-21 17:14:14,476 INFO L748 eck$LassoCheckResult]: Stem: 1212#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1213#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~m~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~m~0#1;main_~y~0#1 := 0;main_~m~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_~m~0#1; 1224#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 1222#L19 assume 0 != main_#t~nondet1#1;havoc main_#t~nondet1#1; 1218#L20-2 assume !!(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := 1 + main_~y~0#1; 1219#L20-2 assume !(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 1216#L20-3 main_~x~0#1 := main_~x~0#1 - 1; 1210#L19-2 main_~y~0#1 := main_~y~0#1 - 1; 1211#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 1215#L19 assume 0 != main_#t~nondet1#1;havoc main_#t~nondet1#1; 1223#L20-2 assume !!(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := 1 + main_~y~0#1; 1234#L20-2 assume !(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 1230#L20-3 main_~x~0#1 := main_~x~0#1 - 1; 1228#L19-2 main_~y~0#1 := main_~y~0#1 - 1; 1229#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 1225#L19 assume !(0 != main_#t~nondet1#1);havoc main_#t~nondet1#1; 1208#L19-2 [2022-11-21 17:14:14,477 INFO L750 eck$LassoCheckResult]: Loop: 1208#L19-2 main_~y~0#1 := main_~y~0#1 - 1; 1209#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 1214#L19 assume !(0 != main_#t~nondet1#1);havoc main_#t~nondet1#1; 1208#L19-2 [2022-11-21 17:14:14,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:14,477 INFO L85 PathProgramCache]: Analyzing trace with hash -410261761, now seen corresponding path program 1 times [2022-11-21 17:14:14,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:14:14,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087703614] [2022-11-21 17:14:14,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:14:14,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:14:14,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:14,489 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:14:14,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:14,516 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:14:14,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:14,517 INFO L85 PathProgramCache]: Analyzing trace with hash 59952, now seen corresponding path program 2 times [2022-11-21 17:14:14,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:14:14,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968831701] [2022-11-21 17:14:14,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:14:14,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:14:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:14,524 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:14:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:14,529 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:14:14,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:14,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1368832626, now seen corresponding path program 2 times [2022-11-21 17:14:14,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:14:14,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020859214] [2022-11-21 17:14:14,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:14:14,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:14:14,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:14,632 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-21 17:14:14,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:14:14,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020859214] [2022-11-21 17:14:14,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020859214] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:14:14,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914723133] [2022-11-21 17:14:14,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:14:14,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:14:14,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:14,635 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:14:14,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-11-21 17:14:14,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:14:14,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:14:14,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 17:14:14,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:14:14,720 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-21 17:14:14,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:14:14,773 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-21 17:14:14,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914723133] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:14:14,774 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:14:14,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-11-21 17:14:14,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132076043] [2022-11-21 17:14:14,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:14:14,798 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 17:14:14,799 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 17:14:14,799 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 17:14:14,799 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 17:14:14,799 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-21 17:14:14,799 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:14,799 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 17:14:14,799 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 17:14:14,800 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration7_Loop [2022-11-21 17:14:14,800 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 17:14:14,800 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 17:14:14,801 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:14,809 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:14,812 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:14,819 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:14,822 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:14,886 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 17:14:14,887 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-21 17:14:14,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:14,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:14,892 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:14,902 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 17:14:14,902 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:14:14,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2022-11-21 17:14:14,944 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 17:14:14,945 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1#1=0} Honda state: {ULTIMATE.start_main_#t~nondet1#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-21 17:14:14,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:14,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:14,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:14,953 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:14,965 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 17:14:14,965 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:14:14,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2022-11-21 17:14:14,996 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 17:14:14,997 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_13=1} Honda state: {v_rep~unnamed0~0~true_13=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-21 17:14:15,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2022-11-21 17:14:15,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:15,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:15,009 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:15,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:15,037 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 17:14:15,037 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:14:15,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2022-11-21 17:14:15,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:15,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2022-11-21 17:14:15,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:15,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:15,056 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:15,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2022-11-21 17:14:15,060 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-21 17:14:15,060 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:14:15,144 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-21 17:14:15,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2022-11-21 17:14:15,148 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 17:14:15,149 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 17:14:15,149 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 17:14:15,149 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 17:14:15,149 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-21 17:14:15,149 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:15,149 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 17:14:15,149 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 17:14:15,149 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration7_Loop [2022-11-21 17:14:15,149 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 17:14:15,149 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 17:14:15,151 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:15,158 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:15,165 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:15,171 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:15,174 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:15,230 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 17:14:15,231 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-21 17:14:15,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:15,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:15,233 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:15,241 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 [2022-11-21 17:14:15,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2022-11-21 17:14:15,256 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 17:14:15,256 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 17:14:15,257 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 17:14:15,257 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 17:14:15,257 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 17:14:15,258 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 17:14:15,258 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 17:14:15,276 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-21 17:14:15,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:15,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:15,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:15,282 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:15,289 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 [2022-11-21 17:14:15,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2022-11-21 17:14:15,304 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 17:14:15,304 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 17:14:15,305 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 17:14:15,305 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 17:14:15,305 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 17:14:15,306 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 17:14:15,306 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 17:14:15,324 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-21 17:14:15,330 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-21 17:14:15,330 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-21 17:14:15,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:15,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:15,333 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:15,339 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-21 17:14:15,339 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-21 17:14:15,339 INFO L513 LassoAnalysis]: Proved termination. [2022-11-21 17:14:15,339 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2022-11-21 17:14:15,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2022-11-21 17:14:15,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:15,344 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-21 17:14:15,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:15,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:15,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 17:14:15,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:14:15,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:15,408 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 17:14:15,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:14:15,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:14:15,444 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-11-21 17:14:15,444 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 54 transitions. cyclomatic complexity: 21 Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:14:15,479 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 54 transitions. cyclomatic complexity: 21. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 119 states and 170 transitions. Complement of second has 7 states. [2022-11-21 17:14:15,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-21 17:14:15,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:14:15,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2022-11-21 17:14:15,482 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 16 letters. Loop has 3 letters. [2022-11-21 17:14:15,482 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:14:15,482 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 19 letters. Loop has 3 letters. [2022-11-21 17:14:15,483 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:14:15,483 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 16 letters. Loop has 6 letters. [2022-11-21 17:14:15,483 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:14:15,483 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 119 states and 170 transitions. [2022-11-21 17:14:15,487 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-21 17:14:15,489 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 119 states to 92 states and 127 transitions. [2022-11-21 17:14:15,489 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-11-21 17:14:15,491 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-11-21 17:14:15,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 92 states and 127 transitions. [2022-11-21 17:14:15,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 17:14:15,492 INFO L218 hiAutomatonCegarLoop]: Abstraction has 92 states and 127 transitions. [2022-11-21 17:14:15,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states and 127 transitions. [2022-11-21 17:14:15,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 69. [2022-11-21 17:14:15,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 69 states have (on average 1.391304347826087) internal successors, (96), 68 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:14:15,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2022-11-21 17:14:15,502 INFO L240 hiAutomatonCegarLoop]: Abstraction has 69 states and 96 transitions. [2022-11-21 17:14:15,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:14:15,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:14:15,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:14:15,503 INFO L87 Difference]: Start difference. First operand 69 states and 96 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:14:15,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:14:15,524 INFO L93 Difference]: Finished difference Result 100 states and 132 transitions. [2022-11-21 17:14:15,524 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 100 states and 132 transitions. [2022-11-21 17:14:15,525 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-21 17:14:15,526 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 100 states to 77 states and 106 transitions. [2022-11-21 17:14:15,526 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-11-21 17:14:15,526 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-11-21 17:14:15,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 106 transitions. [2022-11-21 17:14:15,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 17:14:15,527 INFO L218 hiAutomatonCegarLoop]: Abstraction has 77 states and 106 transitions. [2022-11-21 17:14:15,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states and 106 transitions. [2022-11-21 17:14:15,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2022-11-21 17:14:15,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 76 states have (on average 1.381578947368421) internal successors, (105), 75 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:14:15,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 105 transitions. [2022-11-21 17:14:15,530 INFO L240 hiAutomatonCegarLoop]: Abstraction has 76 states and 105 transitions. [2022-11-21 17:14:15,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:14:15,531 INFO L428 stractBuchiCegarLoop]: Abstraction has 76 states and 105 transitions. [2022-11-21 17:14:15,532 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-11-21 17:14:15,532 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 76 states and 105 transitions. [2022-11-21 17:14:15,532 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-21 17:14:15,532 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 17:14:15,533 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 17:14:15,533 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 3, 2, 2, 2, 2, 1, 1] [2022-11-21 17:14:15,533 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-21 17:14:15,534 INFO L748 eck$LassoCheckResult]: Stem: 1731#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1732#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~m~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~m~0#1;main_~y~0#1 := 0;main_~m~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_~m~0#1; 1733#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 1734#L19 assume 0 != main_#t~nondet1#1;havoc main_#t~nondet1#1; 1736#L20-2 assume !!(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := 1 + main_~y~0#1; 1737#L20-2 assume !!(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := 1 + main_~y~0#1; 1739#L20-2 assume !(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 1798#L20-3 main_~x~0#1 := main_~x~0#1 - 1; 1779#L19-2 main_~y~0#1 := main_~y~0#1 - 1; 1777#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 1775#L19 assume !(0 != main_#t~nondet1#1);havoc main_#t~nondet1#1; 1744#L19-2 main_~y~0#1 := main_~y~0#1 - 1; 1769#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 1767#L19 assume 0 != main_#t~nondet1#1;havoc main_#t~nondet1#1; 1745#L20-2 assume !!(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := 1 + main_~y~0#1; 1766#L20-2 assume !(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 1765#L20-3 main_~x~0#1 := main_~x~0#1 - 1; 1749#L19-2 main_~y~0#1 := main_~y~0#1 - 1; 1750#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 1743#L19 assume !(0 != main_#t~nondet1#1);havoc main_#t~nondet1#1; 1727#L19-2 [2022-11-21 17:14:15,534 INFO L750 eck$LassoCheckResult]: Loop: 1727#L19-2 main_~y~0#1 := main_~y~0#1 - 1; 1728#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 1746#L19 assume !(0 != main_#t~nondet1#1);havoc main_#t~nondet1#1; 1727#L19-2 [2022-11-21 17:14:15,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:15,534 INFO L85 PathProgramCache]: Analyzing trace with hash 33262129, now seen corresponding path program 3 times [2022-11-21 17:14:15,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:14:15,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826646135] [2022-11-21 17:14:15,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:14:15,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:14:15,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:15,543 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:14:15,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:15,550 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:14:15,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:15,551 INFO L85 PathProgramCache]: Analyzing trace with hash 59952, now seen corresponding path program 3 times [2022-11-21 17:14:15,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:14:15,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315364675] [2022-11-21 17:14:15,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:14:15,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:14:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:15,555 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:14:15,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:15,557 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:14:15,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:15,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1225330176, now seen corresponding path program 4 times [2022-11-21 17:14:15,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:14:15,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557632857] [2022-11-21 17:14:15,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:14:15,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:14:15,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:15,651 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 17:14:15,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:14:15,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557632857] [2022-11-21 17:14:15,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557632857] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:14:15,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295450666] [2022-11-21 17:14:15,652 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 17:14:15,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:14:15,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:15,653 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:14:15,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-11-21 17:14:15,705 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 17:14:15,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:14:15,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 17:14:15,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:14:15,752 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 17:14:15,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:14:15,824 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 17:14:15,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295450666] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:14:15,824 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:14:15,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2022-11-21 17:14:15,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616502895] [2022-11-21 17:14:15,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:14:15,853 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 17:14:15,853 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 17:14:15,853 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 17:14:15,853 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 17:14:15,853 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-21 17:14:15,853 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:15,853 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 17:14:15,853 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 17:14:15,853 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration8_Loop [2022-11-21 17:14:15,853 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 17:14:15,853 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 17:14:15,854 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:15,857 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:15,863 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:15,866 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:15,873 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:15,930 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 17:14:15,930 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-21 17:14:15,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:15,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:15,932 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:15,941 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 17:14:15,941 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:14:15,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2022-11-21 17:14:15,967 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 17:14:15,968 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_15=1} Honda state: {v_rep~unnamed0~0~true_15=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-21 17:14:15,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:15,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:15,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:15,976 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:15,981 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 17:14:15,981 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:14:15,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2022-11-21 17:14:16,006 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 17:14:16,006 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1#1=0} Honda state: {ULTIMATE.start_main_#t~nondet1#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-21 17:14:16,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:16,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:16,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:16,012 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:16,017 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 17:14:16,018 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:14:16,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2022-11-21 17:14:16,048 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 17:14:16,049 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=0} Honda state: {ULTIMATE.start_main_~x~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-21 17:14:16,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:16,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:16,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:16,055 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:16,061 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 17:14:16,061 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:14:16,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2022-11-21 17:14:16,097 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 17:14:16,097 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_15=0} Honda state: {v_rep~unnamed0~0~false_15=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-21 17:14:16,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:16,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:16,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:16,104 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:16,109 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 17:14:16,109 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:14:16,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2022-11-21 17:14:16,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:16,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:16,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:16,151 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:16,157 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-21 17:14:16,157 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:14:16,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2022-11-21 17:14:16,250 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-21 17:14:16,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Ended with exit code 0 [2022-11-21 17:14:16,254 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 17:14:16,254 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 17:14:16,254 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 17:14:16,254 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 17:14:16,254 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-21 17:14:16,255 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:16,255 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 17:14:16,255 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 17:14:16,255 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration8_Loop [2022-11-21 17:14:16,255 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 17:14:16,255 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 17:14:16,256 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:16,259 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:16,262 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:16,266 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:16,272 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:16,336 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 17:14:16,336 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-21 17:14:16,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:16,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:16,338 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:16,349 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 [2022-11-21 17:14:16,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2022-11-21 17:14:16,364 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 17:14:16,365 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 17:14:16,365 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 17:14:16,365 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 17:14:16,367 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-21 17:14:16,367 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-21 17:14:16,392 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-21 17:14:16,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:16,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:16,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:16,398 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:16,405 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 [2022-11-21 17:14:16,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2022-11-21 17:14:16,421 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 17:14:16,421 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 17:14:16,421 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 17:14:16,421 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 17:14:16,421 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 17:14:16,422 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 17:14:16,422 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 17:14:16,445 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-21 17:14:16,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:16,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:16,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:16,452 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:16,456 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 [2022-11-21 17:14:16,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2022-11-21 17:14:16,471 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 17:14:16,472 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 17:14:16,472 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 17:14:16,472 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 17:14:16,472 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 17:14:16,473 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 17:14:16,474 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 17:14:16,495 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-21 17:14:16,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:16,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:16,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:16,501 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:16,506 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 [2022-11-21 17:14:16,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2022-11-21 17:14:16,520 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 17:14:16,520 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 17:14:16,520 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 17:14:16,520 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 17:14:16,520 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 17:14:16,521 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 17:14:16,521 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 17:14:16,544 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-21 17:14:16,549 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-21 17:14:16,549 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-21 17:14:16,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:16,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:16,556 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:16,558 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-21 17:14:16,558 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-21 17:14:16,558 INFO L513 LassoAnalysis]: Proved termination. [2022-11-21 17:14:16,558 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2022-11-21 17:14:16,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2022-11-21 17:14:16,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:16,563 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-21 17:14:16,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:16,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 17:14:16,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:14:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:16,630 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 17:14:16,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:14:16,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:14:16,656 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-11-21 17:14:16,656 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 76 states and 105 transitions. cyclomatic complexity: 41 Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:14:16,679 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 76 states and 105 transitions. cyclomatic complexity: 41. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 96 states and 132 transitions. Complement of second has 7 states. [2022-11-21 17:14:16,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-21 17:14:16,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:14:16,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2022-11-21 17:14:16,682 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 20 letters. Loop has 3 letters. [2022-11-21 17:14:16,682 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:14:16,682 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-21 17:14:16,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:16,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:16,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 17:14:16,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:14:16,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:16,738 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 17:14:16,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:14:16,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:14:16,763 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2022-11-21 17:14:16,764 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 76 states and 105 transitions. cyclomatic complexity: 41 Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:14:16,802 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 76 states and 105 transitions. cyclomatic complexity: 41. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 139 states and 185 transitions. Complement of second has 9 states. [2022-11-21 17:14:16,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2022-11-21 17:14:16,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:14:16,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2022-11-21 17:14:16,804 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 20 letters. Loop has 3 letters. [2022-11-21 17:14:16,804 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:14:16,804 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 23 letters. Loop has 3 letters. [2022-11-21 17:14:16,805 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:14:16,805 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 20 letters. Loop has 6 letters. [2022-11-21 17:14:16,805 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:14:16,805 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 139 states and 185 transitions. [2022-11-21 17:14:16,806 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-21 17:14:16,807 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 139 states to 133 states and 176 transitions. [2022-11-21 17:14:16,808 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-11-21 17:14:16,808 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-11-21 17:14:16,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 133 states and 176 transitions. [2022-11-21 17:14:16,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 17:14:16,808 INFO L218 hiAutomatonCegarLoop]: Abstraction has 133 states and 176 transitions. [2022-11-21 17:14:16,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states and 176 transitions. [2022-11-21 17:14:16,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 115. [2022-11-21 17:14:16,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 115 states have (on average 1.3565217391304347) internal successors, (156), 114 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:14:16,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 156 transitions. [2022-11-21 17:14:16,832 INFO L240 hiAutomatonCegarLoop]: Abstraction has 115 states and 156 transitions. [2022-11-21 17:14:16,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:14:16,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:14:16,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:14:16,833 INFO L87 Difference]: Start difference. First operand 115 states and 156 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:14:16,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:14:16,874 INFO L93 Difference]: Finished difference Result 287 states and 369 transitions. [2022-11-21 17:14:16,874 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 287 states and 369 transitions. [2022-11-21 17:14:16,877 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-21 17:14:16,879 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 287 states to 184 states and 240 transitions. [2022-11-21 17:14:16,879 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-11-21 17:14:16,879 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-11-21 17:14:16,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 184 states and 240 transitions. [2022-11-21 17:14:16,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 17:14:16,880 INFO L218 hiAutomatonCegarLoop]: Abstraction has 184 states and 240 transitions. [2022-11-21 17:14:16,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states and 240 transitions. [2022-11-21 17:14:16,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 150. [2022-11-21 17:14:16,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 150 states have (on average 1.3466666666666667) internal successors, (202), 149 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:14:16,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 202 transitions. [2022-11-21 17:14:16,890 INFO L240 hiAutomatonCegarLoop]: Abstraction has 150 states and 202 transitions. [2022-11-21 17:14:16,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 17:14:16,891 INFO L428 stractBuchiCegarLoop]: Abstraction has 150 states and 202 transitions. [2022-11-21 17:14:16,891 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2022-11-21 17:14:16,891 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 150 states and 202 transitions. [2022-11-21 17:14:16,892 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-21 17:14:16,892 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 17:14:16,892 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 17:14:16,894 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 3, 2, 2, 2, 2, 1, 1] [2022-11-21 17:14:16,894 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-21 17:14:16,895 INFO L748 eck$LassoCheckResult]: Stem: 2754#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 2755#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_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~m~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~m~0#1;main_~y~0#1 := 0;main_~m~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_~m~0#1; 2767#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 2764#L19 assume 0 != main_#t~nondet1#1;havoc main_#t~nondet1#1; 2758#L20-2 assume !!(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := 1 + main_~y~0#1; 2759#L20-2 assume !!(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := 1 + main_~y~0#1; 2803#L20-2 assume !(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 2804#L20-3 main_~x~0#1 := main_~x~0#1 - 1; 2802#L19-2 main_~y~0#1 := main_~y~0#1 - 1; 2797#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 2798#L19 assume !(0 != main_#t~nondet1#1);havoc main_#t~nondet1#1; 2788#L19-2 main_~y~0#1 := main_~y~0#1 - 1; 2787#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 2784#L19 assume 0 != main_#t~nondet1#1;havoc main_#t~nondet1#1; 2780#L20-2 assume !!(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := 1 + main_~y~0#1; 2781#L20-2 assume !!(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := 1 + main_~y~0#1; 2796#L20-2 assume !!(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := 1 + main_~y~0#1; 2770#L20-2 assume !(main_~y~0#1 <= main_~m~0#1 && 0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 2773#L20-3 main_~x~0#1 := main_~x~0#1 - 1; 2772#L19-2 main_~y~0#1 := main_~y~0#1 - 1; 2771#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 2768#L19 assume !(0 != main_#t~nondet1#1);havoc main_#t~nondet1#1; 2750#L19-2 [2022-11-21 17:14:16,895 INFO L750 eck$LassoCheckResult]: Loop: 2750#L19-2 main_~y~0#1 := main_~y~0#1 - 1; 2751#L18-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 >= 0); 2756#L19 assume !(0 != main_#t~nondet1#1);havoc main_#t~nondet1#1; 2750#L19-2 [2022-11-21 17:14:16,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:16,895 INFO L85 PathProgramCache]: Analyzing trace with hash -743097903, now seen corresponding path program 5 times [2022-11-21 17:14:16,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:14:16,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573854206] [2022-11-21 17:14:16,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:14:16,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:14:16,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:16,910 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:14:16,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:16,931 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:14:16,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:16,936 INFO L85 PathProgramCache]: Analyzing trace with hash 59952, now seen corresponding path program 4 times [2022-11-21 17:14:16,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:14:16,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371565979] [2022-11-21 17:14:16,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:14:16,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:14:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:16,942 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:14:16,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:16,945 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:14:16,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:16,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1368154528, now seen corresponding path program 6 times [2022-11-21 17:14:16,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:14:16,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805230686] [2022-11-21 17:14:16,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:14:16,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:14:16,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:16,960 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:14:16,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:14:16,968 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:14:17,001 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 17:14:17,001 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 17:14:17,002 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 17:14:17,002 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 17:14:17,002 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-21 17:14:17,002 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:17,002 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 17:14:17,002 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 17:14:17,003 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration9_Loop [2022-11-21 17:14:17,003 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 17:14:17,003 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 17:14:17,004 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:17,007 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:17,010 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:17,016 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:17,022 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:17,077 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 17:14:17,078 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-21 17:14:17,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:17,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:17,080 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:17,085 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 17:14:17,085 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:14:17,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2022-11-21 17:14:17,116 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 17:14:17,117 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1#1=0} Honda state: {ULTIMATE.start_main_#t~nondet1#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-21 17:14:17,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:17,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:17,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:17,123 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:17,129 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 17:14:17,129 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:14:17,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2022-11-21 17:14:17,160 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 17:14:17,161 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_17=1} Honda state: {v_rep~unnamed0~0~true_17=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-21 17:14:17,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:17,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:17,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:17,167 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:17,173 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 17:14:17,173 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:14:17,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2022-11-21 17:14:17,204 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 17:14:17,205 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=0} Honda state: {ULTIMATE.start_main_~x~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-21 17:14:17,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:17,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:17,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:17,211 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:17,217 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 17:14:17,217 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:14:17,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2022-11-21 17:14:17,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:17,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:17,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:17,247 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:17,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2022-11-21 17:14:17,253 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-21 17:14:17,253 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 17:14:17,338 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-21 17:14:17,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:17,342 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 17:14:17,342 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 17:14:17,343 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 17:14:17,343 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 17:14:17,343 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-21 17:14:17,343 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:17,343 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 17:14:17,343 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 17:14:17,343 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration9_Loop [2022-11-21 17:14:17,343 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 17:14:17,343 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 17:14:17,345 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:17,349 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:17,352 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:17,358 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:17,365 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 17:14:17,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:17,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:17,446 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 17:14:17,446 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-21 17:14:17,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:17,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:17,448 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:17,464 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 [2022-11-21 17:14:17,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2022-11-21 17:14:17,479 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 17:14:17,480 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 17:14:17,480 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 17:14:17,480 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 17:14:17,480 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 17:14:17,481 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 17:14:17,481 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 17:14:17,504 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-21 17:14:17,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:17,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:17,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:17,510 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:17,514 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 [2022-11-21 17:14:17,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2022-11-21 17:14:17,529 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 17:14:17,529 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 17:14:17,529 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 17:14:17,529 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 17:14:17,531 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-21 17:14:17,531 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-21 17:14:17,536 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-21 17:14:17,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:17,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:17,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:17,540 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:17,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2022-11-21 17:14:17,543 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 [2022-11-21 17:14:17,555 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 17:14:17,555 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 17:14:17,555 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 17:14:17,555 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 17:14:17,555 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 17:14:17,556 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 17:14:17,556 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 17:14:17,557 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-21 17:14:17,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:17,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:17,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:17,564 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:17,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Waiting until timeout for monitored process [2022-11-21 17:14:17,569 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 [2022-11-21 17:14:17,580 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 17:14:17,580 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 17:14:17,580 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 17:14:17,580 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 17:14:17,580 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 17:14:17,581 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 17:14:17,581 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 17:14:17,584 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-21 17:14:17,586 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-21 17:14:17,586 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-21 17:14:17,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 17:14:17,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:14:17,587 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 17:14:17,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Waiting until timeout for monitored process [2022-11-21 17:14:17,590 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-21 17:14:17,590 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-21 17:14:17,590 INFO L513 LassoAnalysis]: Proved termination. [2022-11-21 17:14:17,590 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2022-11-21 17:14:17,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:17,593 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-21 17:14:17,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:17,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:17,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 17:14:17,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:14:17,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:17,670 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 17:14:17,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:14:17,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:14:17,704 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-11-21 17:14:17,705 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 150 states and 202 transitions. cyclomatic complexity: 73 Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:14:17,736 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 150 states and 202 transitions. cyclomatic complexity: 73. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 197 states and 266 transitions. Complement of second has 7 states. [2022-11-21 17:14:17,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-21 17:14:17,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:14:17,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2022-11-21 17:14:17,739 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 22 letters. Loop has 3 letters. [2022-11-21 17:14:17,739 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:14:17,739 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-21 17:14:17,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:17,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:17,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 17:14:17,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:14:17,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:17,823 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 17:14:17,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:14:17,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:14:17,850 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2022-11-21 17:14:17,850 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 150 states and 202 transitions. cyclomatic complexity: 73 Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:14:17,890 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 150 states and 202 transitions. cyclomatic complexity: 73. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 241 states and 317 transitions. Complement of second has 9 states. [2022-11-21 17:14:17,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2022-11-21 17:14:17,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:14:17,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2022-11-21 17:14:17,892 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 22 letters. Loop has 3 letters. [2022-11-21 17:14:17,892 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:14:17,892 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-21 17:14:17,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:17,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:17,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 17:14:17,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:14:17,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:17,967 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 17:14:17,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:14:18,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:14:18,005 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 3 loop predicates [2022-11-21 17:14:18,006 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 150 states and 202 transitions. cyclomatic complexity: 73 Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:14:18,034 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 150 states and 202 transitions. cyclomatic complexity: 73. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 254 states and 349 transitions. Complement of second has 8 states. [2022-11-21 17:14:18,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-21 17:14:18,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:14:18,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2022-11-21 17:14:18,036 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 22 letters. Loop has 3 letters. [2022-11-21 17:14:18,037 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:14:18,037 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 25 letters. Loop has 3 letters. [2022-11-21 17:14:18,037 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:14:18,037 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 22 letters. Loop has 6 letters. [2022-11-21 17:14:18,037 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 17:14:18,038 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 254 states and 349 transitions. [2022-11-21 17:14:18,042 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-21 17:14:18,043 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 254 states to 0 states and 0 transitions. [2022-11-21 17:14:18,043 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-21 17:14:18,043 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-21 17:14:18,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-21 17:14:18,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 17:14:18,043 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-21 17:14:18,044 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-21 17:14:18,044 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-21 17:14:18,044 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2022-11-21 17:14:18,044 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-21 17:14:18,044 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-21 17:14:18,044 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-21 17:14:18,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.11 05:14:18 BoogieIcfgContainer [2022-11-21 17:14:18,055 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-21 17:14:18,056 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 17:14:18,056 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 17:14:18,056 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 17:14:18,057 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:14:07" (3/4) ... [2022-11-21 17:14:18,061 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-21 17:14:18,061 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 17:14:18,061 INFO L158 Benchmark]: Toolchain (without parser) took 11244.59ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 132.6MB in the beginning and 126.2MB in the end (delta: 6.5MB). Peak memory consumption was 42.1MB. Max. memory is 16.1GB. [2022-11-21 17:14:18,062 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 121.6MB. Free memory is still 79.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 17:14:18,062 INFO L158 Benchmark]: CACSL2BoogieTranslator took 277.41ms. Allocated memory is still 161.5MB. Free memory was 132.1MB in the beginning and 123.2MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-21 17:14:18,063 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.52ms. Allocated memory is still 161.5MB. Free memory was 123.2MB in the beginning and 121.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 17:14:18,063 INFO L158 Benchmark]: Boogie Preprocessor took 27.99ms. Allocated memory is still 161.5MB. Free memory was 121.7MB in the beginning and 121.1MB in the end (delta: 633.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 17:14:18,063 INFO L158 Benchmark]: RCFGBuilder took 337.25ms. Allocated memory is still 161.5MB. Free memory was 120.6MB in the beginning and 112.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-21 17:14:18,064 INFO L158 Benchmark]: BuchiAutomizer took 10553.79ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 111.7MB in the beginning and 126.2MB in the end (delta: -14.4MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. [2022-11-21 17:14:18,064 INFO L158 Benchmark]: Witness Printer took 4.82ms. Allocated memory is still 195.0MB. Free memory is still 126.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 17:14:18,067 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 121.6MB. Free memory is still 79.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 277.41ms. Allocated memory is still 161.5MB. Free memory was 132.1MB in the beginning and 123.2MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.52ms. Allocated memory is still 161.5MB. Free memory was 123.2MB in the beginning and 121.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.99ms. Allocated memory is still 161.5MB. Free memory was 121.7MB in the beginning and 121.1MB in the end (delta: 633.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 337.25ms. Allocated memory is still 161.5MB. Free memory was 120.6MB in the beginning and 112.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 10553.79ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 111.7MB in the beginning and 126.2MB in the end (delta: -14.4MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. * Witness Printer took 4.82ms. Allocated memory is still 195.0MB. Free memory is still 126.2MB. 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 12 terminating modules (3 trivial, 7 deterministic, 2 nondeterministic). One deterministic module has affine ranking function 2 * y + 1 and consists of 5 locations. One deterministic module has affine ranking function 2 * m + -2 * y + 1 and consists of 4 locations. One deterministic module has affine ranking function y and consists of 5 locations. One deterministic module has affine ranking function y and consists of 6 locations. One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function y and consists of 5 locations. One nondeterministic module has affine ranking function 2 * m + -2 * y + 1 and consists of 3 locations. One nondeterministic module has affine ranking function y and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 10.4s and 10 iterations. TraceHistogramMax:5. Analysis of lassos took 8.0s. Construction of modules took 0.2s. Büchi inclusion checks took 1.8s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 11. Automata minimization 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 118 StatesRemovedByMinimization, 9 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 [5, 2, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 197 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 182 mSDsluCounter, 263 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 92 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 180 IncrementalHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 171 mSDtfsCounter, 180 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT6 conc0 concLT2 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax164 hnf100 lsp38 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq156 hnf94 smp100 dnf115 smp100 tf110 neg99 sie101 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 119ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 18 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 9 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.1s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-11-21 17:14:18,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Forceful destruction successful, exit code 0 [2022-11-21 17:14:18,285 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2022-11-21 17:14:18,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-11-21 17:14:18,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b94dcff3-1a98-4dc6-9f66-07991e527db4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE