./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/c.08.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/c.08.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa --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 e4b41eab3134232576005c452e063ce9699dbf2a52c4538827c4a32ddc3b6274 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:35:05,318 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:35:05,320 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:35:05,351 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:35:05,352 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:35:05,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:35:05,355 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:35:05,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:35:05,359 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:35:05,360 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:35:05,361 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:35:05,363 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:35:05,363 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:35:05,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:35:05,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:35:05,368 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:35:05,369 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:35:05,370 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:35:05,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:35:05,375 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:35:05,377 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:35:05,378 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:35:05,380 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:35:05,381 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:35:05,384 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:35:05,385 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:35:05,385 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:35:05,386 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:35:05,387 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:35:05,388 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:35:05,388 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:35:05,389 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:35:05,390 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:35:05,391 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:35:05,392 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:35:05,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:35:05,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:35:05,393 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:35:05,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:35:05,394 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:35:05,395 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:35:05,396 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-06 18:35:05,421 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:35:05,421 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:35:05,421 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:35:05,421 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:35:05,423 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:35:05,423 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:35:05,423 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:35:05,423 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-06 18:35:05,423 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-06 18:35:05,424 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-06 18:35:05,424 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-06 18:35:05,424 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-06 18:35:05,424 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-06 18:35:05,424 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:35:05,425 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 18:35:05,425 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:35:05,425 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:35:05,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-06 18:35:05,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-06 18:35:05,425 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-06 18:35:05,426 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 18:35:05,426 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-06 18:35:05,426 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:35:05,426 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-06 18:35:05,426 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:35:05,427 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:35:05,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:35:05,427 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 18:35:05,427 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:35:05,428 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-06 18:35:05,428 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_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4b41eab3134232576005c452e063ce9699dbf2a52c4538827c4a32ddc3b6274 [2021-12-06 18:35:05,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:35:05,623 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:35:05,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:35:05,627 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:35:05,627 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:35:05,628 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/termination-restricted-15/c.08.c [2021-12-06 18:35:05,675 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/data/e327a34fd/ac0f1197c5b8438cba2cac2cf72b6af0/FLAGd053c2b4b [2021-12-06 18:35:06,054 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:35:06,054 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/sv-benchmarks/c/termination-restricted-15/c.08.c [2021-12-06 18:35:06,059 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/data/e327a34fd/ac0f1197c5b8438cba2cac2cf72b6af0/FLAGd053c2b4b [2021-12-06 18:35:06,071 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/data/e327a34fd/ac0f1197c5b8438cba2cac2cf72b6af0 [2021-12-06 18:35:06,073 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:35:06,075 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:35:06,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:35:06,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:35:06,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:35:06,080 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:35:06" (1/1) ... [2021-12-06 18:35:06,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bd39e02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:35:06, skipping insertion in model container [2021-12-06 18:35:06,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:35:06" (1/1) ... [2021-12-06 18:35:06,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:35:06,095 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:35:06,217 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:35:06,220 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:35:06,233 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:35:06,241 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:35:06,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:35:06 WrapperNode [2021-12-06 18:35:06,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:35:06,242 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:35:06,242 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:35:06,243 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:35:06,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:35:06" (1/1) ... [2021-12-06 18:35:06,251 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:35:06" (1/1) ... [2021-12-06 18:35:06,262 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 23 [2021-12-06 18:35:06,262 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:35:06,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:35:06,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:35:06,263 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:35:06,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:35:06" (1/1) ... [2021-12-06 18:35:06,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:35:06" (1/1) ... [2021-12-06 18:35:06,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:35:06" (1/1) ... [2021-12-06 18:35:06,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:35:06" (1/1) ... [2021-12-06 18:35:06,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:35:06" (1/1) ... [2021-12-06 18:35:06,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:35:06" (1/1) ... [2021-12-06 18:35:06,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:35:06" (1/1) ... [2021-12-06 18:35:06,275 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:35:06,275 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:35:06,275 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:35:06,275 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:35:06,276 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:35:06" (1/1) ... [2021-12-06 18:35:06,283 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 18:35:06,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:35:06,305 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 18:35:06,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-06 18:35:06,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:35:06,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:35:06,396 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:35:06,397 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:35:06,445 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:35:06,450 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:35:06,450 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 18:35:06,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:35:06 BoogieIcfgContainer [2021-12-06 18:35:06,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:35:06,452 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-06 18:35:06,452 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-06 18:35:06,454 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-06 18:35:06,455 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-06 18:35:06,455 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.12 06:35:06" (1/3) ... [2021-12-06 18:35:06,456 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5e1f0ff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.12 06:35:06, skipping insertion in model container [2021-12-06 18:35:06,456 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-06 18:35:06,456 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:35:06" (2/3) ... [2021-12-06 18:35:06,456 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5e1f0ff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.12 06:35:06, skipping insertion in model container [2021-12-06 18:35:06,456 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-06 18:35:06,456 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:35:06" (3/3) ... [2021-12-06 18:35:06,457 INFO L388 chiAutomizerObserver]: Analyzing ICFG c.08.c [2021-12-06 18:35:06,490 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-06 18:35:06,490 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-06 18:35:06,490 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-06 18:35:06,490 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-06 18:35:06,490 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-06 18:35:06,490 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-06 18:35:06,490 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-06 18:35:06,490 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-06 18:35:06,500 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:35:06,513 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-06 18:35:06,513 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 18:35:06,513 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 18:35:06,517 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-06 18:35:06,517 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-06 18:35:06,517 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-06 18:35:06,517 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:35:06,518 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-06 18:35:06,518 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 18:35:06,518 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 18:35:06,519 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-06 18:35:06,519 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-06 18:35:06,523 INFO L791 eck$LassoCheckResult]: Stem: 7#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 10#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~c~0#1, main_~i~0#1, main_~j~0#1;havoc main_~c~0#1;havoc main_~i~0#1;havoc main_~j~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~c~0#1 := 0; 5#L10-2true [2021-12-06 18:35:06,523 INFO L793 eck$LassoCheckResult]: Loop: 5#L10-2true assume !!(main_~i~0#1 >= 0);main_~j~0#1 := 0; 3#L12-2true assume !(main_~j~0#1 <= main_~i~0#1 - 1); 8#L12-3true main_~i~0#1 := main_~i~0#1 - 1; 5#L10-2true [2021-12-06 18:35:06,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:35:06,528 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-06 18:35:06,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:35:06,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997574475] [2021-12-06 18:35:06,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:35:06,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:35:06,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:35:06,589 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 18:35:06,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:35:06,601 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 18:35:06,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:35:06,604 INFO L85 PathProgramCache]: Analyzing trace with hash 40944, now seen corresponding path program 1 times [2021-12-06 18:35:06,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:35:06,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783426502] [2021-12-06 18:35:06,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:35:06,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:35:06,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:35:06,613 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 18:35:06,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:35:06,617 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 18:35:06,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:35:06,618 INFO L85 PathProgramCache]: Analyzing trace with hash 28699886, now seen corresponding path program 1 times [2021-12-06 18:35:06,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:35:06,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444236986] [2021-12-06 18:35:06,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:35:06,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:35:06,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:35:06,625 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 18:35:06,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:35:06,630 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 18:35:06,682 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 18:35:06,682 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 18:35:06,682 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 18:35:06,682 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 18:35:06,682 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 18:35:06,682 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 18:35:06,683 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 18:35:06,683 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 18:35:06,683 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration1_Loop [2021-12-06 18:35:06,683 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 18:35:06,683 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 18:35:06,697 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 18:35:06,703 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 18:35:06,707 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 18:35:06,781 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 18:35:06,781 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 18:35:06,783 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 18:35:06,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:35:06,785 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 18:35:06,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-06 18:35:06,787 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 18:35:06,787 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 18:35:06,804 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 18:35:06,804 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: [] [2021-12-06 18:35:06,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-12-06 18:35:06,825 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 18:35:06,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:35:06,826 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 18:35:06,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-06 18:35:06,827 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 18:35:06,827 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 18:35:06,845 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 18:35:06,845 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: [] [2021-12-06 18:35:06,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2021-12-06 18:35:06,873 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 18:35:06,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:35:06,874 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 18:35:06,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-06 18:35:06,876 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 18:35:06,876 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 18:35:06,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-12-06 18:35:06,911 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 18:35:06,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:35:06,912 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 18:35:06,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-06 18:35:06,913 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 18:35:06,913 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 18:35:06,961 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 18:35:06,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-12-06 18:35:06,964 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 18:35:06,964 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 18:35:06,964 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 18:35:06,964 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 18:35:06,964 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 18:35:06,964 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 18:35:06,964 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 18:35:06,965 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 18:35:06,965 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration1_Loop [2021-12-06 18:35:06,965 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 18:35:06,965 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 18:35:06,967 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 18:35:06,970 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 18:35:06,978 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 18:35:07,021 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 18:35:07,025 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 18:35:07,026 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 18:35:07,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:35:07,027 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 18:35:07,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-06 18:35:07,029 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 [2021-12-06 18:35:07,039 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 18:35:07,039 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 18:35:07,039 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 18:35:07,039 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 18:35:07,045 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 18:35:07,045 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 18:35:07,049 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 18:35:07,068 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2021-12-06 18:35:07,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 18:35:07,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:35:07,069 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 18:35:07,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-06 18:35:07,070 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 [2021-12-06 18:35:07,079 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 18:35:07,079 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 18:35:07,080 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 18:35:07,080 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 18:35:07,080 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 18:35:07,081 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 18:35:07,081 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 18:35:07,084 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 18:35:07,087 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-06 18:35:07,087 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-06 18:35:07,088 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 18:35:07,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:35:07,089 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 18:35:07,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-06 18:35:07,125 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 18:35:07,126 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 18:35:07,126 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 18:35:07,127 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 2*ULTIMATE.start_main_~i~0#1 + 1 Supporting invariants [] [2021-12-06 18:35:07,193 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2021-12-06 18:35:07,197 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 18:35:07,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:35:07,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:07,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 18:35:07,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:35:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:07,269 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:35:07,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:35:07,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:35:07,313 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-06 18:35:07,314 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:35:07,343 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 24 states and 36 transitions. Complement of second has 7 states. [2021-12-06 18:35:07,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-06 18:35:07,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:35:07,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2021-12-06 18:35:07,349 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 3 letters. [2021-12-06 18:35:07,350 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 18:35:07,350 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 5 letters. Loop has 3 letters. [2021-12-06 18:35:07,350 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 18:35:07,350 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 6 letters. [2021-12-06 18:35:07,350 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 18:35:07,351 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 36 transitions. [2021-12-06 18:35:07,353 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-06 18:35:07,355 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 8 states and 11 transitions. [2021-12-06 18:35:07,355 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2021-12-06 18:35:07,356 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2021-12-06 18:35:07,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2021-12-06 18:35:07,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 18:35:07,356 INFO L681 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-12-06 18:35:07,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2021-12-06 18:35:07,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2021-12-06 18:35:07,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:35:07,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2021-12-06 18:35:07,373 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-12-06 18:35:07,373 INFO L587 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-12-06 18:35:07,373 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-06 18:35:07,373 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2021-12-06 18:35:07,373 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-06 18:35:07,373 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 18:35:07,373 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 18:35:07,374 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-06 18:35:07,374 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-06 18:35:07,374 INFO L791 eck$LassoCheckResult]: Stem: 80#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 81#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~c~0#1, main_~i~0#1, main_~j~0#1;havoc main_~c~0#1;havoc main_~i~0#1;havoc main_~j~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~c~0#1 := 0; 78#L10-2 assume !!(main_~i~0#1 >= 0);main_~j~0#1 := 0; 75#L12-2 [2021-12-06 18:35:07,374 INFO L793 eck$LassoCheckResult]: Loop: 75#L12-2 assume !!(main_~j~0#1 <= main_~i~0#1 - 1);main_~j~0#1 := 1 + main_~j~0#1; 75#L12-2 [2021-12-06 18:35:07,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:35:07,374 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-12-06 18:35:07,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:35:07,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810280743] [2021-12-06 18:35:07,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:35:07,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:35:07,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:35:07,378 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 18:35:07,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:35:07,381 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 18:35:07,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:35:07,381 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 1 times [2021-12-06 18:35:07,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:35:07,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630642020] [2021-12-06 18:35:07,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:35:07,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:35:07,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:35:07,385 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 18:35:07,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:35:07,387 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 18:35:07,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:35:07,388 INFO L85 PathProgramCache]: Analyzing trace with hash 925804, now seen corresponding path program 1 times [2021-12-06 18:35:07,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:35:07,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090151192] [2021-12-06 18:35:07,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:35:07,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:35:07,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:35:07,392 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 18:35:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:35:07,395 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 18:35:07,404 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 18:35:07,404 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 18:35:07,404 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 18:35:07,404 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 18:35:07,404 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 18:35:07,404 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 18:35:07,404 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 18:35:07,404 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 18:35:07,404 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration2_Loop [2021-12-06 18:35:07,405 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 18:35:07,405 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 18:35:07,405 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 18:35:07,407 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 18:35:07,411 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 18:35:07,430 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 18:35:07,430 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 18:35:07,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 18:35:07,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:35:07,431 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 18:35:07,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-06 18:35:07,432 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 18:35:07,432 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 18:35:07,449 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 18:35:07,449 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: [] [2021-12-06 18:35:07,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-12-06 18:35:07,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 18:35:07,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:35:07,470 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 18:35:07,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-12-06 18:35:07,471 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 18:35:07,471 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 18:35:07,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2021-12-06 18:35:07,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 18:35:07,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:35:07,509 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 18:35:07,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-12-06 18:35:07,510 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 18:35:07,510 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 18:35:07,637 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 18:35:07,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-12-06 18:35:07,641 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 18:35:07,641 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 18:35:07,641 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 18:35:07,641 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 18:35:07,641 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 18:35:07,641 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 18:35:07,641 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 18:35:07,641 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 18:35:07,641 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration2_Loop [2021-12-06 18:35:07,641 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 18:35:07,641 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 18:35:07,642 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 18:35:07,644 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 18:35:07,648 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 18:35:07,665 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 18:35:07,665 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 18:35:07,665 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 18:35:07,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:35:07,666 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 18:35:07,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-12-06 18:35:07,667 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 [2021-12-06 18:35:07,674 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 18:35:07,674 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 18:35:07,674 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 18:35:07,674 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 18:35:07,676 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 18:35:07,676 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 18:35:07,679 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 18:35:07,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-12-06 18:35:07,698 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 18:35:07,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:35:07,699 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 18:35:07,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-12-06 18:35:07,700 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 [2021-12-06 18:35:07,708 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 18:35:07,708 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 18:35:07,708 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 18:35:07,708 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 18:35:07,708 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 18:35:07,709 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 18:35:07,709 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 18:35:07,711 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 18:35:07,714 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-12-06 18:35:07,715 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-06 18:35:07,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 18:35:07,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:35:07,716 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 18:35:07,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-12-06 18:35:07,716 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 18:35:07,716 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 18:35:07,717 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 18:35:07,717 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~j~0#1) = 1*ULTIMATE.start_main_~i~0#1 - 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2021-12-06 18:35:07,745 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2021-12-06 18:35:07,745 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 18:35:07,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:35:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:07,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 18:35:07,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:35:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:07,763 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:35:07,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:35:07,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:35:07,763 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 [2021-12-06 18:35:07,764 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2021-12-06 18:35:07,772 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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 14 states and 19 transitions. Complement of second has 5 states. [2021-12-06 18:35:07,773 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 [2021-12-06 18:35:07,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2021-12-06 18:35:07,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-12-06 18:35:07,774 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 1 letters. [2021-12-06 18:35:07,774 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 18:35:07,774 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 1 letters. [2021-12-06 18:35:07,774 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 18:35:07,774 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2021-12-06 18:35:07,775 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 18:35:07,775 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2021-12-06 18:35:07,776 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-06 18:35:07,776 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 14 transitions. [2021-12-06 18:35:07,776 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2021-12-06 18:35:07,776 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2021-12-06 18:35:07,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 14 transitions. [2021-12-06 18:35:07,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 18:35:07,777 INFO L681 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2021-12-06 18:35:07,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 14 transitions. [2021-12-06 18:35:07,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 7. [2021-12-06 18:35:07,777 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) [2021-12-06 18:35:07,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2021-12-06 18:35:07,778 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2021-12-06 18:35:07,778 INFO L587 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2021-12-06 18:35:07,778 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-06 18:35:07,778 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2021-12-06 18:35:07,779 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-06 18:35:07,779 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 18:35:07,779 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 18:35:07,779 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2021-12-06 18:35:07,779 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-06 18:35:07,779 INFO L791 eck$LassoCheckResult]: Stem: 133#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 134#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~c~0#1, main_~i~0#1, main_~j~0#1;havoc main_~c~0#1;havoc main_~i~0#1;havoc main_~j~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~c~0#1 := 0; 131#L10-2 assume !!(main_~i~0#1 >= 0);main_~j~0#1 := 0; 129#L12-2 assume !(main_~j~0#1 <= main_~i~0#1 - 1); 130#L12-3 main_~i~0#1 := main_~i~0#1 - 1; 132#L10-2 assume !!(main_~i~0#1 >= 0);main_~j~0#1 := 0; 128#L12-2 [2021-12-06 18:35:07,780 INFO L793 eck$LassoCheckResult]: Loop: 128#L12-2 assume !!(main_~j~0#1 <= main_~i~0#1 - 1);main_~j~0#1 := 1 + main_~j~0#1; 128#L12-2 [2021-12-06 18:35:07,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:35:07,780 INFO L85 PathProgramCache]: Analyzing trace with hash 889696477, now seen corresponding path program 2 times [2021-12-06 18:35:07,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:35:07,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759596262] [2021-12-06 18:35:07,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:35:07,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:35:07,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:07,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:35:07,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:35:07,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759596262] [2021-12-06 18:35:07,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759596262] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:35:07,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:35:07,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:35:07,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902889715] [2021-12-06 18:35:07,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:35:07,820 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-06 18:35:07,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:35:07,820 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 2 times [2021-12-06 18:35:07,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:35:07,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773024476] [2021-12-06 18:35:07,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:35:07,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:35:07,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:35:07,825 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 18:35:07,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:35:07,828 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 18:35:07,838 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 18:35:07,838 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 18:35:07,838 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 18:35:07,838 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 18:35:07,838 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 18:35:07,838 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 18:35:07,838 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 18:35:07,838 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 18:35:07,838 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration3_Loop [2021-12-06 18:35:07,838 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 18:35:07,838 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 18:35:07,839 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 18:35:07,841 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 18:35:07,851 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 18:35:07,869 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 18:35:07,869 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 18:35:07,869 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 18:35:07,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:35:07,870 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 18:35:07,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-12-06 18:35:07,874 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 18:35:07,874 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 18:35:07,880 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2021-12-06 18:35:07,887 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 18:35:07,887 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: [] [2021-12-06 18:35:07,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2021-12-06 18:35:07,906 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 18:35:07,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:35:07,907 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 18:35:07,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-12-06 18:35:07,908 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 18:35:07,908 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 18:35:07,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-12-06 18:35:07,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2021-12-06 18:35:07,936 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 18:35:07,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:35:07,937 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 18:35:07,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-12-06 18:35:07,938 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 18:35:07,938 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 18:35:08,064 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 18:35:08,066 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2021-12-06 18:35:08,067 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 18:35:08,067 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 18:35:08,067 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 18:35:08,067 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 18:35:08,067 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 18:35:08,067 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 18:35:08,067 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 18:35:08,067 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 18:35:08,067 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration3_Loop [2021-12-06 18:35:08,067 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 18:35:08,067 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 18:35:08,068 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 18:35:08,071 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 18:35:08,073 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 18:35:08,091 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 18:35:08,091 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 18:35:08,091 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 18:35:08,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:35:08,092 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 18:35:08,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-12-06 18:35:08,093 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 [2021-12-06 18:35:08,100 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 18:35:08,100 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 18:35:08,100 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 18:35:08,100 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 18:35:08,100 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 18:35:08,101 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 18:35:08,101 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 18:35:08,103 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 18:35:08,106 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-06 18:35:08,106 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-06 18:35:08,106 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 18:35:08,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:35:08,107 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 18:35:08,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-12-06 18:35:08,108 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 18:35:08,108 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 18:35:08,108 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 18:35:08,109 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~j~0#1) = 1*ULTIMATE.start_main_~i~0#1 - 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2021-12-06 18:35:08,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2021-12-06 18:35:08,128 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 18:35:08,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:35:08,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:08,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 18:35:08,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:35:08,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:08,148 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:35:08,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:35:08,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:35:08,149 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 [2021-12-06 18:35:08,149 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-12-06 18:35:08,157 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 12 states and 16 transitions. Complement of second has 5 states. [2021-12-06 18:35:08,157 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 [2021-12-06 18:35:08,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-12-06 18:35:08,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-12-06 18:35:08,158 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 1 letters. [2021-12-06 18:35:08,158 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 18:35:08,158 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-06 18:35:08,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:35:08,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:08,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 18:35:08,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:35:08,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:08,178 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:35:08,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:35:08,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:35:08,178 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 [2021-12-06 18:35:08,178 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-12-06 18:35:08,185 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 12 states and 16 transitions. Complement of second has 5 states. [2021-12-06 18:35:08,185 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 [2021-12-06 18:35:08,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-12-06 18:35:08,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-12-06 18:35:08,186 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 1 letters. [2021-12-06 18:35:08,187 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 18:35:08,187 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-06 18:35:08,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:35:08,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:08,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 18:35:08,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:35:08,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:35:08,206 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 18:35:08,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:35:08,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:35:08,207 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 [2021-12-06 18:35:08,207 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-12-06 18:35:08,215 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 10 states and 12 transitions. Complement of second has 4 states. [2021-12-06 18:35:08,215 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 [2021-12-06 18:35:08,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-12-06 18:35:08,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2021-12-06 18:35:08,216 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 6 letters. Loop has 1 letters. [2021-12-06 18:35:08,216 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 18:35:08,216 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 1 letters. [2021-12-06 18:35:08,216 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 18:35:08,216 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 6 letters. Loop has 2 letters. [2021-12-06 18:35:08,216 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 18:35:08,216 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2021-12-06 18:35:08,217 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-06 18:35:08,217 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2021-12-06 18:35:08,217 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-06 18:35:08,217 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-06 18:35:08,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-06 18:35:08,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:35:08,217 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 18:35:08,217 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 18:35:08,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:35:08,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:35:08,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:35:08,220 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 5 states, 4 states have (on average 1.5) 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) [2021-12-06 18:35:08,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:35:08,222 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-12-06 18:35:08,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 18:35:08,222 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-12-06 18:35:08,222 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-06 18:35:08,223 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-12-06 18:35:08,223 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-06 18:35:08,223 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-06 18:35:08,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-06 18:35:08,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:35:08,223 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 18:35:08,223 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 18:35:08,223 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 18:35:08,223 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-06 18:35:08,223 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-06 18:35:08,223 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-06 18:35:08,223 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-06 18:35:08,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.12 06:35:08 BoogieIcfgContainer [2021-12-06 18:35:08,228 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-06 18:35:08,228 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 18:35:08,228 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 18:35:08,228 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 18:35:08,229 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:35:06" (3/4) ... [2021-12-06 18:35:08,231 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-06 18:35:08,231 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 18:35:08,231 INFO L158 Benchmark]: Toolchain (without parser) took 2156.59ms. Allocated memory is still 100.7MB. Free memory was 65.1MB in the beginning and 56.4MB in the end (delta: 8.7MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2021-12-06 18:35:08,232 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 100.7MB. Free memory was 81.5MB in the beginning and 81.3MB in the end (delta: 119.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:35:08,232 INFO L158 Benchmark]: CACSL2BoogieTranslator took 165.67ms. Allocated memory is still 100.7MB. Free memory was 64.9MB in the beginning and 79.1MB in the end (delta: -14.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 18:35:08,232 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.18ms. Allocated memory is still 100.7MB. Free memory was 79.1MB in the beginning and 77.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:35:08,233 INFO L158 Benchmark]: Boogie Preprocessor took 11.67ms. Allocated memory is still 100.7MB. Free memory was 77.9MB in the beginning and 77.0MB in the end (delta: 924.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 18:35:08,233 INFO L158 Benchmark]: RCFGBuilder took 176.24ms. Allocated memory is still 100.7MB. Free memory was 76.6MB in the beginning and 68.9MB in the end (delta: 7.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-06 18:35:08,233 INFO L158 Benchmark]: BuchiAutomizer took 1775.97ms. Allocated memory is still 100.7MB. Free memory was 68.9MB in the beginning and 57.0MB in the end (delta: 11.9MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. [2021-12-06 18:35:08,234 INFO L158 Benchmark]: Witness Printer took 2.53ms. Allocated memory is still 100.7MB. Free memory was 57.0MB in the beginning and 56.4MB in the end (delta: 656.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:35:08,236 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 100.7MB. Free memory was 81.5MB in the beginning and 81.3MB in the end (delta: 119.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 165.67ms. Allocated memory is still 100.7MB. Free memory was 64.9MB in the beginning and 79.1MB in the end (delta: -14.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.18ms. Allocated memory is still 100.7MB. Free memory was 79.1MB in the beginning and 77.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 11.67ms. Allocated memory is still 100.7MB. Free memory was 77.9MB in the beginning and 77.0MB in the end (delta: 924.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 176.24ms. Allocated memory is still 100.7MB. Free memory was 76.6MB in the beginning and 68.9MB in the end (delta: 7.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 1775.97ms. Allocated memory is still 100.7MB. Free memory was 68.9MB in the beginning and 57.0MB in the end (delta: 11.9MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. * Witness Printer took 2.53ms. Allocated memory is still 100.7MB. Free memory was 57.0MB in the beginning and 56.4MB in the end (delta: 656.4kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * i + 1 and consists of 5 locations. One deterministic module has affine ranking function -1 * j + i and consists of 3 locations. One nondeterministic module has affine ranking function -1 * j + i and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.7s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 1.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 28 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 26 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 39 IncrementalHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 20 mSDtfsCounter, 39 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax188 hnf100 lsp53 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq151 hnf93 smp96 dnf100 smp100 tf110 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 23ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-06 18:35:08,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-12-06 18:35:08,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43ab981c-115b-41c2-9338-2a1d0d92a78b/bin/uautomizer-DrprNOufMa/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