./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY --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 086de8df2449d866ff611c83674a9697b7d09f2a2b1c5c922e46b0c1131a7d5c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 07:37:32,143 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 07:37:32,145 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 07:37:32,204 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 07:37:32,205 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 07:37:32,210 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 07:37:32,213 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 07:37:32,217 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 07:37:32,220 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 07:37:32,230 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 07:37:32,231 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 07:37:32,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 07:37:32,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 07:37:32,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 07:37:32,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 07:37:32,249 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 07:37:32,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 07:37:32,254 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 07:37:32,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 07:37:32,261 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 07:37:32,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 07:37:32,274 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 07:37:32,276 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 07:37:32,279 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 07:37:32,287 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 07:37:32,287 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 07:37:32,288 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 07:37:32,291 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 07:37:32,291 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 07:37:32,293 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 07:37:32,295 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 07:37:32,296 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 07:37:32,298 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 07:37:32,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 07:37:32,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 07:37:32,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 07:37:32,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 07:37:32,304 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 07:37:32,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 07:37:32,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 07:37:32,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 07:37:32,307 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-11-07 07:37:32,354 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 07:37:32,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 07:37:32,361 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 07:37:32,361 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 07:37:32,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 07:37:32,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 07:37:32,363 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 07:37:32,363 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-07 07:37:32,363 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-07 07:37:32,364 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-07 07:37:32,364 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-07 07:37:32,365 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-07 07:37:32,365 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-07 07:37:32,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 07:37:32,366 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 07:37:32,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 07:37:32,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 07:37:32,366 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-07 07:37:32,367 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-07 07:37:32,367 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-07 07:37:32,367 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 07:37:32,367 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-07 07:37:32,368 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 07:37:32,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-07 07:37:32,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 07:37:32,368 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 07:37:32,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 07:37:32,371 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 07:37:32,371 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 07:37:32,373 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-07 07:37:32,373 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_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 086de8df2449d866ff611c83674a9697b7d09f2a2b1c5c922e46b0c1131a7d5c [2021-11-07 07:37:32,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 07:37:32,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 07:37:32,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 07:37:32,716 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 07:37:32,717 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 07:37:32,719 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c [2021-11-07 07:37:32,849 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/data/5e636c51a/e6b92064be8d473c9c60186e18199733/FLAG316ec759d [2021-11-07 07:37:33,377 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 07:37:33,378 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c [2021-11-07 07:37:33,391 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/data/5e636c51a/e6b92064be8d473c9c60186e18199733/FLAG316ec759d [2021-11-07 07:37:33,734 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/data/5e636c51a/e6b92064be8d473c9c60186e18199733 [2021-11-07 07:37:33,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 07:37:33,739 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 07:37:33,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 07:37:33,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 07:37:33,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 07:37:33,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:37:33" (1/1) ... [2021-11-07 07:37:33,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42a9e967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:37:33, skipping insertion in model container [2021-11-07 07:37:33,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:37:33" (1/1) ... [2021-11-07 07:37:33,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 07:37:33,786 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:37:33,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:37:33,934 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 07:37:33,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:37:33,972 INFO L208 MainTranslator]: Completed translation [2021-11-07 07:37:33,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:37:33 WrapperNode [2021-11-07 07:37:33,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 07:37:33,974 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 07:37:33,974 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 07:37:33,974 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 07:37:33,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:37:33" (1/1) ... [2021-11-07 07:37:33,999 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:37:33" (1/1) ... [2021-11-07 07:37:34,016 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 07:37:34,017 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 07:37:34,017 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 07:37:34,017 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 07:37:34,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:37:33" (1/1) ... [2021-11-07 07:37:34,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:37:33" (1/1) ... [2021-11-07 07:37:34,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:37:33" (1/1) ... [2021-11-07 07:37:34,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:37:33" (1/1) ... [2021-11-07 07:37:34,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:37:33" (1/1) ... [2021-11-07 07:37:34,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:37:33" (1/1) ... [2021-11-07 07:37:34,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:37:33" (1/1) ... [2021-11-07 07:37:34,035 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 07:37:34,036 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 07:37:34,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 07:37:34,036 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 07:37:34,037 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:37:33" (1/1) ... [2021-11-07 07:37:34,045 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:37:34,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:37:34,072 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 07:37:34,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-07 07:37:34,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 07:37:34,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 07:37:34,301 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 07:37:34,302 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-07 07:37:34,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:37:34 BoogieIcfgContainer [2021-11-07 07:37:34,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 07:37:34,306 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-07 07:37:34,307 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-07 07:37:34,310 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-07 07:37:34,311 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-07 07:37:34,312 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.11 07:37:33" (1/3) ... [2021-11-07 07:37:34,313 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@b44af80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.11 07:37:34, skipping insertion in model container [2021-11-07 07:37:34,313 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-07 07:37:34,314 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:37:33" (2/3) ... [2021-11-07 07:37:34,314 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@b44af80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.11 07:37:34, skipping insertion in model container [2021-11-07 07:37:34,314 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-07 07:37:34,314 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:37:34" (3/3) ... [2021-11-07 07:37:34,318 INFO L389 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c [2021-11-07 07:37:34,388 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-07 07:37:34,388 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-07 07:37:34,388 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-07 07:37:34,388 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-07 07:37:34,388 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-07 07:37:34,388 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-07 07:37:34,389 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-07 07:37:34,389 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-07 07:37:34,400 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:37:34,416 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-07 07:37:34,417 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 07:37:34,417 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 07:37:34,424 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-07 07:37:34,424 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-07 07:37:34,424 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-07 07:37:34,425 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:37:34,427 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-07 07:37:34,427 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 07:37:34,427 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 07:37:34,428 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-07 07:37:34,428 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-07 07:37:34,435 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~m~0, main_~n~0, main_~v1~0, main_~v2~0;havoc main_~m~0;havoc main_~n~0;havoc main_~v1~0;havoc main_~v2~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 4#L17true assume main_~n~0 >= 0 && main_~m~0 > 0;main_~v1~0 := main_~n~0;main_~v2~0 := 0; 8#L21-2true [2021-11-07 07:37:34,435 INFO L793 eck$LassoCheckResult]: Loop: 8#L21-2true assume !!(main_~v1~0 > 0); 6#L21true assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 8#L21-2true [2021-11-07 07:37:34,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:37:34,451 INFO L85 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2021-11-07 07:37:34,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:37:34,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734679674] [2021-11-07 07:37:34,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:37:34,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:37:34,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 07:37:34,562 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 07:37:34,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 07:37:34,600 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 07:37:34,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:37:34,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 1 times [2021-11-07 07:37:34,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:37:34,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011829345] [2021-11-07 07:37:34,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:37:34,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:37:34,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 07:37:34,633 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 07:37:34,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 07:37:34,647 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 07:37:34,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:37:34,650 INFO L85 PathProgramCache]: Analyzing trace with hash 957575, now seen corresponding path program 1 times [2021-11-07 07:37:34,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:37:34,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640238269] [2021-11-07 07:37:34,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:37:34,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:37:34,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 07:37:34,675 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 07:37:34,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 07:37:34,697 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 07:37:34,809 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 07:37:34,810 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 07:37:34,810 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 07:37:34,811 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 07:37:34,811 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-07 07:37:34,811 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:37:34,811 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 07:37:34,811 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 07:37:34,812 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration1_Loop [2021-11-07 07:37:34,812 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 07:37:34,812 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 07:37:34,830 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 07:37:34,839 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 07:37:34,843 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 07:37:34,851 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 07:37:34,940 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 07:37:34,941 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-07 07:37:34,943 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:37:34,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:37:34,960 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 07:37:34,964 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 07:37:34,964 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 07:37:34,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-07 07:37:35,005 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-07 07:37:35,005 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: [] [2021-11-07 07:37:35,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-11-07 07:37:35,044 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:37:35,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:37:35,046 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 07:37:35,052 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 07:37:35,052 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 07:37:35,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-07 07:37:35,081 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-07 07:37:35,082 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: [] [2021-11-07 07:37:35,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-07 07:37:35,120 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:37:35,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:37:35,122 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 07:37:35,127 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 07:37:35,128 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 07:37:35,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-07 07:37:35,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-07 07:37:35,190 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:37:35,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:37:35,192 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 07:37:35,197 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-07 07:37:35,198 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 07:37:35,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-07 07:37:35,386 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-07 07:37:35,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-11-07 07:37:35,391 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 07:37:35,391 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 07:37:35,391 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 07:37:35,391 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 07:37:35,392 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-07 07:37:35,392 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:37:35,392 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 07:37:35,392 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 07:37:35,392 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration1_Loop [2021-11-07 07:37:35,392 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 07:37:35,392 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 07:37:35,395 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 07:37:35,399 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 07:37:35,403 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 07:37:35,410 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 07:37:35,469 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 07:37:35,474 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-07 07:37:35,476 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:37:35,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:37:35,477 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 07:37:35,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-07 07:37:35,492 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 [2021-11-07 07:37:35,501 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 07:37:35,501 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 07:37:35,501 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 07:37:35,502 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 07:37:35,507 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-07 07:37:35,507 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-07 07:37:35,523 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-07 07:37:35,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-11-07 07:37:35,560 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:37:35,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:37:35,561 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 07:37:35,575 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 [2021-11-07 07:37:35,584 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 07:37:35,584 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 07:37:35,585 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 07:37:35,585 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 07:37:35,589 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-07 07:37:35,589 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-07 07:37:35,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-07 07:37:35,615 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-07 07:37:35,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-11-07 07:37:35,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:37:35,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:37:35,646 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 07:37:35,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-11-07 07:37:35,652 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 [2021-11-07 07:37:35,662 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 07:37:35,662 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-07 07:37:35,663 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 07:37:35,663 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 07:37:35,663 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 07:37:35,665 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-07 07:37:35,665 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-07 07:37:35,676 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-07 07:37:35,680 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-11-07 07:37:35,681 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-07 07:37:35,682 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:37:35,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:37:35,707 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 07:37:35,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-11-07 07:37:35,723 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-07 07:37:35,724 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-07 07:37:35,724 INFO L513 LassoAnalysis]: Proved termination. [2021-11-07 07:37:35,724 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~v2~0, ULTIMATE.start_main_~m~0) = -1*ULTIMATE.start_main_~v2~0 + 1*ULTIMATE.start_main_~m~0 Supporting invariants [] [2021-11-07 07:37:35,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-11-07 07:37:35,762 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-07 07:37:35,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:37:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:37:35,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 07:37:35,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:37:35,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:37:35,852 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 07:37:35,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:37:35,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:35,881 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-11-07 07:37:35,883 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:37:35,926 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 28 states and 35 transitions. Complement of second has 6 states. [2021-11-07 07:37:35,931 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 [2021-11-07 07:37:35,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:37:35,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-11-07 07:37:35,958 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 2 letters. [2021-11-07 07:37:35,959 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 07:37:35,959 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 4 letters. Loop has 2 letters. [2021-11-07 07:37:35,959 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 07:37:35,959 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 4 letters. [2021-11-07 07:37:35,960 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 07:37:35,960 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2021-11-07 07:37:35,963 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-07 07:37:35,966 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 8 states and 11 transitions. [2021-11-07 07:37:35,979 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2021-11-07 07:37:35,980 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-11-07 07:37:35,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2021-11-07 07:37:35,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-07 07:37:35,981 INFO L681 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-11-07 07:37:36,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2021-11-07 07:37:36,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-11-07 07:37:36,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-11-07 07:37:36,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:37:36,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2021-11-07 07:37:36,033 INFO L704 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-11-07 07:37:36,033 INFO L587 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-11-07 07:37:36,034 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-07 07:37:36,034 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2021-11-07 07:37:36,034 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-07 07:37:36,034 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 07:37:36,034 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 07:37:36,035 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-11-07 07:37:36,035 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-07 07:37:36,035 INFO L791 eck$LassoCheckResult]: Stem: 74#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~m~0, main_~n~0, main_~v1~0, main_~v2~0;havoc main_~m~0;havoc main_~n~0;havoc main_~v1~0;havoc main_~v2~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 72#L17 assume main_~n~0 >= 0 && main_~m~0 > 0;main_~v1~0 := main_~n~0;main_~v2~0 := 0; 73#L21-2 assume !!(main_~v1~0 > 0); 75#L21 assume !(main_~v2~0 < main_~m~0);main_~v2~0 := 0; 76#L21-2 [2021-11-07 07:37:36,035 INFO L793 eck$LassoCheckResult]: Loop: 76#L21-2 assume !!(main_~v1~0 > 0); 79#L21 assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 76#L21-2 [2021-11-07 07:37:36,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:37:36,036 INFO L85 PathProgramCache]: Analyzing trace with hash 957577, now seen corresponding path program 1 times [2021-11-07 07:37:36,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:37:36,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663278699] [2021-11-07 07:37:36,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:37:36,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:37:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:37:36,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:36,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:37:36,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663278699] [2021-11-07 07:37:36,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663278699] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:37:36,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:37:36,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 07:37:36,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931395145] [2021-11-07 07:37:36,091 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-07 07:37:36,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:37:36,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 2 times [2021-11-07 07:37:36,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:37:36,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539169836] [2021-11-07 07:37:36,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:37:36,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:37:36,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 07:37:36,101 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 07:37:36,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 07:37:36,105 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 07:37:36,134 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 07:37:36,134 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 07:37:36,134 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 07:37:36,134 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 07:37:36,134 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-07 07:37:36,134 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:37:36,134 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 07:37:36,135 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 07:37:36,135 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration2_Loop [2021-11-07 07:37:36,135 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 07:37:36,135 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 07:37:36,137 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 07:37:36,151 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 07:37:36,160 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 07:37:36,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 07:37:36,242 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 07:37:36,242 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-07 07:37:36,242 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:37:36,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:37:36,244 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 07:37:36,251 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 07:37:36,251 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 07:37:36,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-11-07 07:37:36,269 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-07 07:37:36,269 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: [] [2021-11-07 07:37:36,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-11-07 07:37:36,303 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:37:36,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:37:36,307 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 07:37:36,312 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 07:37:36,312 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 07:37:36,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-11-07 07:37:36,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-11-07 07:37:36,367 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:37:36,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:37:36,369 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 07:37:36,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-11-07 07:37:36,373 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-07 07:37:36,373 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 07:37:36,573 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-07 07:37:36,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-11-07 07:37:36,581 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 07:37:36,581 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 07:37:36,581 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 07:37:36,581 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 07:37:36,581 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-07 07:37:36,581 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:37:36,581 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 07:37:36,581 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 07:37:36,581 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration2_Loop [2021-11-07 07:37:36,581 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 07:37:36,581 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 07:37:36,583 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 07:37:36,587 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 07:37:36,593 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 07:37:36,599 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 07:37:36,652 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 07:37:36,653 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-07 07:37:36,653 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:37:36,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:37:36,659 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 07:37:36,663 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 [2021-11-07 07:37:36,673 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 07:37:36,673 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 07:37:36,673 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 07:37:36,673 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 07:37:36,676 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-07 07:37:36,677 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-07 07:37:36,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-11-07 07:37:36,695 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-07 07:37:36,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2021-11-07 07:37:36,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:37:36,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:37:36,717 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 07:37:36,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-11-07 07:37:36,718 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 [2021-11-07 07:37:36,726 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 07:37:36,726 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-07 07:37:36,726 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 07:37:36,726 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 07:37:36,727 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 07:37:36,728 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-07 07:37:36,729 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-07 07:37:36,732 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-07 07:37:36,734 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-07 07:37:36,734 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-07 07:37:36,735 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:37:36,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:37:36,736 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 07:37:36,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-11-07 07:37:36,738 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-07 07:37:36,738 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-07 07:37:36,738 INFO L513 LassoAnalysis]: Proved termination. [2021-11-07 07:37:36,738 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~v2~0) = 1*ULTIMATE.start_main_~m~0 - 1*ULTIMATE.start_main_~v2~0 Supporting invariants [] [2021-11-07 07:37:36,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-11-07 07:37:36,762 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-07 07:37:36,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:37:36,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:37:36,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 07:37:36,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:37:36,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:37:36,822 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 07:37:36,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:37:36,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:36,837 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-11-07 07:37:36,838 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:37:36,853 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 12 states and 17 transitions. Complement of second has 5 states. [2021-11-07 07:37:36,853 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 [2021-11-07 07:37:36,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:37:36,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2021-11-07 07:37:36,854 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2021-11-07 07:37:36,855 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 07:37:36,855 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2021-11-07 07:37:36,855 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 07:37:36,856 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2021-11-07 07:37:36,856 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 07:37:36,856 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2021-11-07 07:37:36,859 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-07 07:37:36,861 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2021-11-07 07:37:36,862 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-11-07 07:37:36,868 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-11-07 07:37:36,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2021-11-07 07:37:36,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-07 07:37:36,869 INFO L681 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2021-11-07 07:37:36,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2021-11-07 07:37:36,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-11-07 07:37:36,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:37:36,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2021-11-07 07:37:36,876 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2021-11-07 07:37:36,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:37:36,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:37:36,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:37:36,890 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:37:36,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:37:36,902 INFO L93 Difference]: Finished difference Result 14 states and 18 transitions. [2021-11-07 07:37:36,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:37:36,903 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 18 transitions. [2021-11-07 07:37:36,907 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-07 07:37:36,909 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 13 states and 17 transitions. [2021-11-07 07:37:36,910 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-11-07 07:37:36,910 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-11-07 07:37:36,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 17 transitions. [2021-11-07 07:37:36,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-07 07:37:36,910 INFO L681 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2021-11-07 07:37:36,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 17 transitions. [2021-11-07 07:37:36,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-11-07 07:37:36,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:37:36,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2021-11-07 07:37:36,918 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-11-07 07:37:36,918 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-11-07 07:37:36,918 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-07 07:37:36,918 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2021-11-07 07:37:36,920 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-07 07:37:36,920 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 07:37:36,920 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 07:37:36,921 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1] [2021-11-07 07:37:36,921 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-07 07:37:36,921 INFO L791 eck$LassoCheckResult]: Stem: 157#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~m~0, main_~n~0, main_~v1~0, main_~v2~0;havoc main_~m~0;havoc main_~n~0;havoc main_~v1~0;havoc main_~v2~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 155#L17 assume main_~n~0 >= 0 && main_~m~0 > 0;main_~v1~0 := main_~n~0;main_~v2~0 := 0; 156#L21-2 assume !!(main_~v1~0 > 0); 160#L21 assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 161#L21-2 assume !!(main_~v1~0 > 0); 158#L21 assume !(main_~v2~0 < main_~m~0);main_~v2~0 := 0; 159#L21-2 assume !!(main_~v1~0 > 0); 164#L21 assume !(main_~v2~0 < main_~m~0);main_~v2~0 := 0; 162#L21-2 [2021-11-07 07:37:36,921 INFO L793 eck$LassoCheckResult]: Loop: 162#L21-2 assume !!(main_~v1~0 > 0); 163#L21 assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 162#L21-2 [2021-11-07 07:37:36,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:37:36,922 INFO L85 PathProgramCache]: Analyzing trace with hash -422236399, now seen corresponding path program 1 times [2021-11-07 07:37:36,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:37:36,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579886496] [2021-11-07 07:37:36,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:37:36,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:37:36,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:37:36,972 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 07:37:36,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:37:36,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579886496] [2021-11-07 07:37:36,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579886496] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:37:36,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511825808] [2021-11-07 07:37:36,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:37:36,973 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:37:36,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:37:36,975 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:37:36,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-07 07:37:37,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:37:37,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:37:37,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:37:37,057 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 07:37:37,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511825808] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:37:37,058 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:37:37,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2021-11-07 07:37:37,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903535779] [2021-11-07 07:37:37,059 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-07 07:37:37,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:37:37,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 3 times [2021-11-07 07:37:37,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:37:37,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732549311] [2021-11-07 07:37:37,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:37:37,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:37:37,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 07:37:37,065 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 07:37:37,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 07:37:37,069 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 07:37:37,095 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 07:37:37,096 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 07:37:37,096 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 07:37:37,096 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 07:37:37,096 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-07 07:37:37,096 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:37:37,096 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 07:37:37,096 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 07:37:37,096 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration3_Loop [2021-11-07 07:37:37,096 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 07:37:37,097 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 07:37:37,098 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 07:37:37,101 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 07:37:37,107 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 07:37:37,110 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 07:37:37,160 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 07:37:37,160 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-07 07:37:37,161 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:37:37,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:37:37,188 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 07:37:37,190 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 07:37:37,191 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 07:37:37,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-11-07 07:37:37,208 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-07 07:37:37,208 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: [] [2021-11-07 07:37:37,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2021-11-07 07:37:37,235 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:37:37,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:37:37,236 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 07:37:37,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-11-07 07:37:37,241 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 07:37:37,242 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 07:37:37,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-11-07 07:37:37,277 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:37:37,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:37:37,278 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 07:37:37,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-11-07 07:37:37,280 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-07 07:37:37,280 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 07:37:37,447 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-07 07:37:37,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-11-07 07:37:37,450 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 07:37:37,450 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 07:37:37,450 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 07:37:37,450 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 07:37:37,451 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-07 07:37:37,451 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:37:37,451 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 07:37:37,451 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 07:37:37,451 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration3_Loop [2021-11-07 07:37:37,451 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 07:37:37,451 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 07:37:37,452 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 07:37:37,464 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 07:37:37,479 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 07:37:37,486 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 07:37:37,545 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 07:37:37,546 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-07 07:37:37,546 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:37:37,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:37:37,547 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 07:37:37,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-11-07 07:37:37,563 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 [2021-11-07 07:37:37,579 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 07:37:37,580 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 07:37:37,580 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 07:37:37,580 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 07:37:37,584 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-07 07:37:37,584 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-07 07:37:37,598 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-07 07:37:37,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-11-07 07:37:37,639 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:37:37,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:37:37,641 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 07:37:37,647 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 [2021-11-07 07:37:37,658 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 07:37:37,659 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-07 07:37:37,659 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 07:37:37,659 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 07:37:37,659 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 07:37:37,661 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-07 07:37:37,661 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-07 07:37:37,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-11-07 07:37:37,687 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-07 07:37:37,693 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-07 07:37:37,693 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-07 07:37:37,693 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:37:37,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:37:37,698 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 07:37:37,704 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-07 07:37:37,704 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-07 07:37:37,704 INFO L513 LassoAnalysis]: Proved termination. [2021-11-07 07:37:37,704 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~v2~0, ULTIMATE.start_main_~m~0) = -1*ULTIMATE.start_main_~v2~0 + 1*ULTIMATE.start_main_~m~0 Supporting invariants [] [2021-11-07 07:37:37,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-11-07 07:37:37,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-11-07 07:37:37,737 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-07 07:37:37,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:37:37,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:37:37,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 07:37:37,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:37:37,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:37:37,824 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 07:37:37,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:37:37,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:37,840 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-11-07 07:37:37,840 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:37:37,853 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 14 states and 20 transitions. Complement of second has 5 states. [2021-11-07 07:37:37,853 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 [2021-11-07 07:37:37,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:37:37,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2021-11-07 07:37:37,855 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 8 letters. Loop has 2 letters. [2021-11-07 07:37:37,855 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 07:37:37,855 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-07 07:37:37,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:37:37,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:37:37,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 07:37:37,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:37:37,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:37:37,929 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 07:37:37,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:37:37,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:37,942 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2021-11-07 07:37:37,942 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:37:37,954 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 14 states and 20 transitions. Complement of second has 5 states. [2021-11-07 07:37:37,954 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 [2021-11-07 07:37:37,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:37:37,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2021-11-07 07:37:37,983 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 8 letters. Loop has 2 letters. [2021-11-07 07:37:37,983 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 07:37:37,986 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-07 07:37:38,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:37:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:37:38,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 07:37:38,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:37:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:37:38,083 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 07:37:38,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:37:38,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-11-07 07:37:38,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:38,106 INFO L152 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 [2021-11-07 07:37:38,106 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:37:38,116 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 16 states and 23 transitions. Complement of second has 4 states. [2021-11-07 07:37:38,118 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 [2021-11-07 07:37:38,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:37:38,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2021-11-07 07:37:38,119 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2021-11-07 07:37:38,120 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 07:37:38,120 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 10 letters. Loop has 2 letters. [2021-11-07 07:37:38,120 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 07:37:38,120 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 4 letters. [2021-11-07 07:37:38,121 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 07:37:38,121 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 23 transitions. [2021-11-07 07:37:38,124 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-07 07:37:38,129 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 14 states and 19 transitions. [2021-11-07 07:37:38,129 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-11-07 07:37:38,130 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-11-07 07:37:38,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 19 transitions. [2021-11-07 07:37:38,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-07 07:37:38,130 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2021-11-07 07:37:38,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 19 transitions. [2021-11-07 07:37:38,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 7. [2021-11-07 07:37:38,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:37:38,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2021-11-07 07:37:38,133 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2021-11-07 07:37:38,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:37:38,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:37:38,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:37:38,135 INFO L87 Difference]: Start difference. First operand 7 states and 9 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:37:38,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:37:38,144 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2021-11-07 07:37:38,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:37:38,145 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2021-11-07 07:37:38,146 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-11-07 07:37:38,147 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 8 states and 9 transitions. [2021-11-07 07:37:38,147 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2021-11-07 07:37:38,148 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2021-11-07 07:37:38,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2021-11-07 07:37:38,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-07 07:37:38,148 INFO L681 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-11-07 07:37:38,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2021-11-07 07:37:38,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 6. [2021-11-07 07:37:38,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:37:38,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2021-11-07 07:37:38,150 INFO L704 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2021-11-07 07:37:38,150 INFO L587 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2021-11-07 07:37:38,150 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-07 07:37:38,150 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2021-11-07 07:37:38,152 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-07 07:37:38,152 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-07 07:37:38,152 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-07 07:37:38,153 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-07 07:37:38,153 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1] [2021-11-07 07:37:38,153 INFO L791 eck$LassoCheckResult]: Stem: 370#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~m~0, main_~n~0, main_~v1~0, main_~v2~0;havoc main_~m~0;havoc main_~n~0;havoc main_~v1~0;havoc main_~v2~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 368#L17 assume main_~n~0 >= 0 && main_~m~0 > 0;main_~v1~0 := main_~n~0;main_~v2~0 := 0; 369#L21-2 [2021-11-07 07:37:38,153 INFO L793 eck$LassoCheckResult]: Loop: 369#L21-2 assume !!(main_~v1~0 > 0); 372#L21 assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 373#L21-2 assume !!(main_~v1~0 > 0); 371#L21 assume !(main_~v2~0 < main_~m~0);main_~v2~0 := 0; 369#L21-2 [2021-11-07 07:37:38,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:37:38,154 INFO L85 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 2 times [2021-11-07 07:37:38,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:37:38,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006663491] [2021-11-07 07:37:38,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:37:38,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:37:38,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 07:37:38,167 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 07:37:38,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-11-07 07:37:38,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 07:37:38,185 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 07:37:38,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:37:38,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1326601, now seen corresponding path program 1 times [2021-11-07 07:37:38,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:37:38,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529171000] [2021-11-07 07:37:38,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:37:38,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:37:38,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 07:37:38,201 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 07:37:38,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 07:37:38,212 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 07:37:38,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:37:38,217 INFO L85 PathProgramCache]: Analyzing trace with hash 920229996, now seen corresponding path program 2 times [2021-11-07 07:37:38,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:37:38,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072755426] [2021-11-07 07:37:38,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:37:38,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:37:38,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 07:37:38,232 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 07:37:38,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 07:37:38,249 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 07:37:38,340 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 07:37:38,340 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 07:37:38,340 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 07:37:38,340 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 07:37:38,341 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-07 07:37:38,341 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:37:38,341 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 07:37:38,341 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 07:37:38,341 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration4_Loop [2021-11-07 07:37:38,341 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 07:37:38,342 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 07:37:38,345 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 07:37:38,357 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 07:37:38,360 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 07:37:38,366 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 07:37:38,427 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 07:37:38,427 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-07 07:37:38,428 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:37:38,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:37:38,429 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 07:37:38,435 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 07:37:38,436 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 07:37:38,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-11-07 07:37:38,458 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-07 07:37:38,458 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~v2~0=0, ULTIMATE.start_main_~m~0=1} Honda state: {ULTIMATE.start_main_~v2~0=0, ULTIMATE.start_main_~m~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-07 07:37:38,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-11-07 07:37:38,503 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:37:38,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:37:38,505 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 07:37:38,507 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 07:37:38,507 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 07:37:38,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-11-07 07:37:38,535 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-07 07:37:38,535 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: [] [2021-11-07 07:37:38,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-11-07 07:37:38,583 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:37:38,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:37:38,584 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 07:37:38,587 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-07 07:37:38,587 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 07:37:38,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-11-07 07:37:38,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2021-11-07 07:37:38,640 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:37:38,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:37:38,641 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 07:37:38,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-11-07 07:37:38,642 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-07 07:37:38,643 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-07 07:37:38,722 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-07 07:37:38,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2021-11-07 07:37:38,725 INFO L210 LassoAnalysis]: Preferences: [2021-11-07 07:37:38,725 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-07 07:37:38,725 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-07 07:37:38,725 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-07 07:37:38,725 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-07 07:37:38,725 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:37:38,725 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-07 07:37:38,725 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-07 07:37:38,725 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration4_Loop [2021-11-07 07:37:38,725 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-07 07:37:38,725 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-07 07:37:38,727 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 07:37:38,750 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 07:37:38,756 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 07:37:38,759 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-07 07:37:38,819 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-07 07:37:38,819 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-07 07:37:38,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:37:38,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:37:38,821 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 07:37:38,828 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 [2021-11-07 07:37:38,839 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 07:37:38,839 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-07 07:37:38,840 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 07:37:38,840 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 07:37:38,840 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 07:37:38,841 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-07 07:37:38,841 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-07 07:37:38,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-11-07 07:37:38,859 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-07 07:37:38,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-11-07 07:37:38,898 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:37:38,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:37:38,903 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 07:37:38,906 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 [2021-11-07 07:37:38,917 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-07 07:37:38,917 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-07 07:37:38,917 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-07 07:37:38,917 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-07 07:37:38,917 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-07 07:37:38,918 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-07 07:37:38,919 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-07 07:37:38,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-11-07 07:37:38,935 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-07 07:37:38,939 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-07 07:37:38,940 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-07 07:37:38,940 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-07 07:37:38,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:37:38,941 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-07 07:37:38,943 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-07 07:37:38,943 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-07 07:37:38,943 INFO L513 LassoAnalysis]: Proved termination. [2021-11-07 07:37:38,944 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~v1~0) = 1*ULTIMATE.start_main_~v1~0 Supporting invariants [] [2021-11-07 07:37:38,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-11-07 07:37:38,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-11-07 07:37:38,981 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-07 07:37:38,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:37:38,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:37:38,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 07:37:38,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:37:39,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:37:39,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 07:37:39,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:37:39,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:39,054 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-11-07 07:37:39,055 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2 Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 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) [2021-11-07 07:37:39,071 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 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 13 states and 15 transitions. Complement of second has 6 states. [2021-11-07 07:37:39,072 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 [2021-11-07 07:37:39,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 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) [2021-11-07 07:37:39,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2021-11-07 07:37:39,072 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 4 letters. [2021-11-07 07:37:39,072 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 07:37:39,073 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2021-11-07 07:37:39,073 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 07:37:39,073 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 8 letters. [2021-11-07 07:37:39,073 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-07 07:37:39,073 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 15 transitions. [2021-11-07 07:37:39,074 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-07 07:37:39,074 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 0 states and 0 transitions. [2021-11-07 07:37:39,074 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-11-07 07:37:39,074 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-11-07 07:37:39,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-11-07 07:37:39,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 07:37:39,074 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 07:37:39,075 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 07:37:39,075 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 07:37:39,075 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-11-07 07:37:39,075 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-11-07 07:37:39,075 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-07 07:37:39,075 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-11-07 07:37:39,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.11 07:37:39 BoogieIcfgContainer [2021-11-07 07:37:39,081 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-07 07:37:39,082 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 07:37:39,082 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 07:37:39,082 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 07:37:39,082 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:37:34" (3/4) ... [2021-11-07 07:37:39,086 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 07:37:39,086 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 07:37:39,087 INFO L168 Benchmark]: Toolchain (without parser) took 5348.00 ms. Allocated memory is still 127.9 MB. Free memory was 94.4 MB in the beginning and 69.2 MB in the end (delta: 25.2 MB). Peak memory consumption was 24.6 MB. Max. memory is 16.1 GB. [2021-11-07 07:37:39,088 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 92.3 MB. Free memory is still 51.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 07:37:39,088 INFO L168 Benchmark]: CACSL2BoogieTranslator took 232.29 ms. Allocated memory is still 127.9 MB. Free memory was 94.4 MB in the beginning and 104.7 MB in the end (delta: -10.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 07:37:39,089 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.49 ms. Allocated memory is still 127.9 MB. Free memory was 104.7 MB in the beginning and 103.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 07:37:39,089 INFO L168 Benchmark]: Boogie Preprocessor took 18.15 ms. Allocated memory is still 127.9 MB. Free memory was 103.5 MB in the beginning and 102.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 07:37:39,090 INFO L168 Benchmark]: RCFGBuilder took 269.77 ms. Allocated memory is still 127.9 MB. Free memory was 102.4 MB in the beginning and 94.8 MB in the end (delta: 7.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-07 07:37:39,090 INFO L168 Benchmark]: BuchiAutomizer took 4774.92 ms. Allocated memory is still 127.9 MB. Free memory was 94.8 MB in the beginning and 69.7 MB in the end (delta: 25.0 MB). Peak memory consumption was 27.7 MB. Max. memory is 16.1 GB. [2021-11-07 07:37:39,091 INFO L168 Benchmark]: Witness Printer took 4.31 ms. Allocated memory is still 127.9 MB. Free memory was 69.7 MB in the beginning and 69.2 MB in the end (delta: 549.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 07:37:39,101 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 92.3 MB. Free memory is still 51.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 232.29 ms. Allocated memory is still 127.9 MB. Free memory was 94.4 MB in the beginning and 104.7 MB in the end (delta: -10.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.49 ms. Allocated memory is still 127.9 MB. Free memory was 104.7 MB in the beginning and 103.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.15 ms. Allocated memory is still 127.9 MB. Free memory was 103.5 MB in the beginning and 102.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 269.77 ms. Allocated memory is still 127.9 MB. Free memory was 102.4 MB in the beginning and 94.8 MB in the end (delta: 7.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 4774.92 ms. Allocated memory is still 127.9 MB. Free memory was 94.8 MB in the beginning and 69.7 MB in the end (delta: 25.0 MB). Peak memory consumption was 27.7 MB. Max. memory is 16.1 GB. * Witness Printer took 4.31 ms. Allocated memory is still 127.9 MB. Free memory was 69.7 MB in the beginning and 69.2 MB in the end (delta: 549.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function m + -1 * v2 and consists of 4 locations. One deterministic module has affine ranking function m + -1 * v2 and consists of 3 locations. One deterministic module has affine ranking function v1 and consists of 4 locations. One nondeterministic module has affine ranking function m + -1 * v2 and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.7s and 5 iterations. TraceHistogramMax:3. Analysis of lassos took 3.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 10 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 12 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 2/2 HoareTripleCheckerStatistics: 45 SDtfs, 35 SDslu, 12 SDs, 0 SdLazy, 33 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax164 hnf100 lsp34 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq152 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 47ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-11-07 07:37:39,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-11-07 07:37:39,367 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-11-07 07:37:39,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40445aaf-8208-49c8-9a11-e6eec6de4488/bin/uautomizer-AkOaLMaTGY/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