./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ --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 06d48bd39a18f705c3286a70a8cdcced2226e3b2a16c7a38c85f5398d4bcad34 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:13:35,281 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:13:35,283 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:13:35,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:13:35,350 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:13:35,356 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:13:35,359 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:13:35,363 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:13:35,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:13:35,373 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:13:35,374 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:13:35,377 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:13:35,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:13:35,381 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:13:35,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:13:35,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:13:35,389 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:13:35,390 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:13:35,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:13:35,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:13:35,405 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:13:35,407 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:13:35,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:13:35,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:13:35,425 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:13:35,430 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:13:35,430 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:13:35,431 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:13:35,432 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:13:35,433 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:13:35,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:13:35,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:13:35,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:13:35,438 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:13:35,439 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:13:35,439 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:13:35,440 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:13:35,441 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:13:35,441 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:13:35,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:13:35,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:13:35,444 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-10-17 10:13:35,477 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:13:35,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:13:35,478 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:13:35,478 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:13:35,479 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:13:35,480 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:13:35,480 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:13:35,480 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-10-17 10:13:35,481 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-10-17 10:13:35,481 INFO L138 SettingsManager]: * Use old map elimination=false [2022-10-17 10:13:35,481 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-10-17 10:13:35,482 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-10-17 10:13:35,482 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-10-17 10:13:35,482 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:13:35,483 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 10:13:35,483 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:13:35,483 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:13:35,484 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-10-17 10:13:35,484 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-10-17 10:13:35,484 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-10-17 10:13:35,485 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:13:35,485 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-10-17 10:13:35,486 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:13:35,486 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-10-17 10:13:35,486 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:13:35,487 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:13:35,487 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:13:35,487 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:13:35,489 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-10-17 10:13:35,489 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_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06d48bd39a18f705c3286a70a8cdcced2226e3b2a16c7a38c85f5398d4bcad34 [2022-10-17 10:13:35,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:13:35,819 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:13:35,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:13:35,825 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:13:35,825 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:13:35,827 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c [2022-10-17 10:13:35,904 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/data/0141c75e9/d95c046feae74d1fbd65773eded9acd7/FLAG2ca8659c9 [2022-10-17 10:13:36,467 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:13:36,468 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c [2022-10-17 10:13:36,473 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/data/0141c75e9/d95c046feae74d1fbd65773eded9acd7/FLAG2ca8659c9 [2022-10-17 10:13:36,850 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/data/0141c75e9/d95c046feae74d1fbd65773eded9acd7 [2022-10-17 10:13:36,857 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:13:36,859 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:13:36,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:13:36,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:13:36,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:13:36,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:13:36" (1/1) ... [2022-10-17 10:13:36,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a5115a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:36, skipping insertion in model container [2022-10-17 10:13:36,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:13:36" (1/1) ... [2022-10-17 10:13:36,877 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:13:36,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:13:37,124 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:13:37,129 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:13:37,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:13:37,159 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:13:37,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:37 WrapperNode [2022-10-17 10:13:37,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:13:37,161 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:13:37,161 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:13:37,162 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:13:37,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:37" (1/1) ... [2022-10-17 10:13:37,177 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:37" (1/1) ... [2022-10-17 10:13:37,194 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2022-10-17 10:13:37,194 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:13:37,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:13:37,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:13:37,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:13:37,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:37" (1/1) ... [2022-10-17 10:13:37,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:37" (1/1) ... [2022-10-17 10:13:37,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:37" (1/1) ... [2022-10-17 10:13:37,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:37" (1/1) ... [2022-10-17 10:13:37,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:37" (1/1) ... [2022-10-17 10:13:37,212 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:37" (1/1) ... [2022-10-17 10:13:37,213 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:37" (1/1) ... [2022-10-17 10:13:37,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:37" (1/1) ... [2022-10-17 10:13:37,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:13:37,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:13:37,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:13:37,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:13:37,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:37" (1/1) ... [2022-10-17 10:13:37,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:37,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:37,256 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:37,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-10-17 10:13:37,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:13:37,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:13:37,389 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:13:37,391 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:13:37,477 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:13:37,485 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:13:37,485 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:13:37,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:13:37 BoogieIcfgContainer [2022-10-17 10:13:37,488 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:13:37,489 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-10-17 10:13:37,489 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-10-17 10:13:37,494 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-10-17 10:13:37,495 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 10:13:37,496 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 17.10 10:13:36" (1/3) ... [2022-10-17 10:13:37,497 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7f131cf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.10 10:13:37, skipping insertion in model container [2022-10-17 10:13:37,497 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 10:13:37,497 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:13:37" (2/3) ... [2022-10-17 10:13:37,498 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7f131cf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.10 10:13:37, skipping insertion in model container [2022-10-17 10:13:37,498 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 10:13:37,498 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:13:37" (3/3) ... [2022-10-17 10:13:37,502 INFO L332 chiAutomizerObserver]: Analyzing ICFG GopanReps-CAV2006-Fig1a.c [2022-10-17 10:13:37,585 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-10-17 10:13:37,585 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-10-17 10:13:37,585 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-10-17 10:13:37,585 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-10-17 10:13:37,586 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-10-17 10:13:37,586 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-10-17 10:13:37,586 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-10-17 10:13:37,587 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-10-17 10:13:37,594 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:13:37,620 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-10-17 10:13:37,620 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:13:37,620 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:13:37,626 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-10-17 10:13:37,626 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-10-17 10:13:37,626 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-10-17 10:13:37,626 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:13:37,628 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-10-17 10:13:37,628 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:13:37,628 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:13:37,629 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-10-17 10:13:37,629 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-10-17 10:13:37,637 INFO L748 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := 0;main_~y~0#1 := 0; 5#L18-2true [2022-10-17 10:13:37,638 INFO L750 eck$LassoCheckResult]: Loop: 5#L18-2true assume !!(main_~y~0#1 >= 0); 9#L19true assume !(main_~x~0#1 <= 50);main_~y~0#1 := main_~y~0#1 - 1; 2#L19-2true main_~x~0#1 := 1 + main_~x~0#1; 5#L18-2true [2022-10-17 10:13:37,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:13:37,647 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-10-17 10:13:37,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:13:37,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391092654] [2022-10-17 10:13:37,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:13:37,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:13:37,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:13:37,755 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:13:37,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:13:37,790 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:13:37,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:13:37,794 INFO L85 PathProgramCache]: Analyzing trace with hash 40876, now seen corresponding path program 1 times [2022-10-17 10:13:37,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:13:37,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005948619] [2022-10-17 10:13:37,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:13:37,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:13:37,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:13:37,826 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:13:37,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:13:37,846 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:13:37,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:13:37,848 INFO L85 PathProgramCache]: Analyzing trace with hash 28699818, now seen corresponding path program 1 times [2022-10-17 10:13:37,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:13:37,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467977296] [2022-10-17 10:13:37,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:13:37,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:13:37,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:37,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:13:37,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:13:37,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467977296] [2022-10-17 10:13:38,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467977296] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:13:38,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:13:38,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:13:38,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583546882] [2022-10-17 10:13:38,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:13:38,133 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:13:38,134 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:13:38,134 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:13:38,134 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:13:38,134 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-10-17 10:13:38,134 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:38,135 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:13:38,135 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:13:38,135 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration1_Loop [2022-10-17 10:13:38,135 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:13:38,136 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:13:38,183 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:13:38,227 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:13:38,237 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:13:38,242 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:13:38,363 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:13:38,363 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-10-17 10:13:38,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:38,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:38,368 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:38,375 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:13:38,375 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:13:38,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-10-17 10:13:38,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:13:38,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:38,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:38,454 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:38,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-10-17 10:13:38,458 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-10-17 10:13:38,459 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:13:38,495 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:13:38,495 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=51} Honda state: {ULTIMATE.start_main_~x~0#1=51} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=0}, {ULTIMATE.start_main_~x~0#1=1}, {ULTIMATE.start_main_~x~0#1=0}] Lambdas: [14, 1, 0] Nus: [0, 1] [2022-10-17 10:13:38,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:13:38,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:38,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:38,533 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:38,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-10-17 10:13:38,539 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:13:38,539 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:13:38,562 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:13:38,562 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:13:38,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:13:38,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:38,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:38,598 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:38,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-10-17 10:13:38,613 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:13:38,613 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:13:38,637 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:13:38,638 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:13:38,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:13:38,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:38,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:38,663 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:38,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-10-17 10:13:38,666 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:13:38,666 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:13:38,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-10-17 10:13:38,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:38,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:38,706 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:38,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-10-17 10:13:38,720 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-10-17 10:13:38,720 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:13:38,757 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-10-17 10:13:38,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2022-10-17 10:13:38,769 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:13:38,769 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:13:38,769 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:13:38,769 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:13:38,769 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-10-17 10:13:38,769 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:38,769 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:13:38,769 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:13:38,769 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration1_Loop [2022-10-17 10:13:38,770 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:13:38,770 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:13:38,772 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:13:38,779 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:13:38,783 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:13:38,787 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:13:38,852 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:13:38,857 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-10-17 10:13:38,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:38,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:38,859 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:38,870 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:13:38,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-10-17 10:13:38,879 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:13:38,879 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:13:38,880 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:13:38,880 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:13:38,880 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:13:38,882 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:13:38,882 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:13:38,893 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:13:38,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-10-17 10:13:38,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:38,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:38,915 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:38,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-10-17 10:13:38,921 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:13:38,929 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:13:38,930 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:13:38,930 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:13:38,930 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:13:38,935 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-10-17 10:13:38,935 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-10-17 10:13:38,974 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:13:39,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2022-10-17 10:13:39,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:39,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:39,002 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:39,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-10-17 10:13:39,008 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:13:39,017 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:13:39,017 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:13:39,017 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:13:39,017 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:13:39,023 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-10-17 10:13:39,023 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-10-17 10:13:39,056 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:13:39,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2022-10-17 10:13:39,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:39,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:39,078 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:39,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-10-17 10:13:39,082 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:13:39,089 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:13:39,090 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:13:39,090 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:13:39,090 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:13:39,090 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:13:39,091 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:13:39,091 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:13:39,112 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-10-17 10:13:39,115 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-10-17 10:13:39,115 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-10-17 10:13:39,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:39,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:39,119 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:39,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-10-17 10:13:39,142 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-10-17 10:13:39,143 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-10-17 10:13:39,143 INFO L513 LassoAnalysis]: Proved termination. [2022-10-17 10:13:39,143 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 2*ULTIMATE.start_main_~y~0#1 + 1 Supporting invariants [] [2022-10-17 10:13:39,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-10-17 10:13:39,172 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-10-17 10:13:39,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:13:39,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:39,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 10:13:39,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:13:39,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:39,225 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:13:39,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:13:39,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:13:39,353 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-10-17 10:13:39,356 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:13:39,423 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 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 29 states and 36 transitions. Complement of second has 8 states. [2022-10-17 10:13:39,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-10-17 10:13:39,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:13:39,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 16 transitions. [2022-10-17 10:13:39,444 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 2 letters. Loop has 3 letters. [2022-10-17 10:13:39,446 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:13:39,446 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 5 letters. Loop has 3 letters. [2022-10-17 10:13:39,447 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:13:39,447 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 2 letters. Loop has 6 letters. [2022-10-17 10:13:39,448 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:13:39,449 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 36 transitions. [2022-10-17 10:13:39,457 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-10-17 10:13:39,464 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 12 states and 15 transitions. [2022-10-17 10:13:39,468 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2022-10-17 10:13:39,471 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2022-10-17 10:13:39,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 15 transitions. [2022-10-17 10:13:39,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:13:39,473 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12 states and 15 transitions. [2022-10-17 10:13:39,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 15 transitions. [2022-10-17 10:13:39,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2022-10-17 10:13:39,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:13:39,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2022-10-17 10:13:39,518 INFO L240 hiAutomatonCegarLoop]: Abstraction has 11 states and 14 transitions. [2022-10-17 10:13:39,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:13:39,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:13:39,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:13:39,522 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:13:39,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:13:39,533 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2022-10-17 10:13:39,533 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2022-10-17 10:13:39,534 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-10-17 10:13:39,535 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 8 states and 9 transitions. [2022-10-17 10:13:39,535 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-10-17 10:13:39,535 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-10-17 10:13:39,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2022-10-17 10:13:39,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:13:39,536 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 9 transitions. [2022-10-17 10:13:39,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2022-10-17 10:13:39,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2022-10-17 10:13:39,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:13:39,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2022-10-17 10:13:39,538 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 8 transitions. [2022-10-17 10:13:39,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:13:39,540 INFO L428 stractBuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2022-10-17 10:13:39,540 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-10-17 10:13:39,540 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2022-10-17 10:13:39,541 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-10-17 10:13:39,541 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:13:39,541 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:13:39,542 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-10-17 10:13:39,542 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-10-17 10:13:39,542 INFO L748 eck$LassoCheckResult]: Stem: 104#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 105#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := 0;main_~y~0#1 := 0; 108#L18-2 assume !!(main_~y~0#1 >= 0); 107#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 102#L19-2 [2022-10-17 10:13:39,543 INFO L750 eck$LassoCheckResult]: Loop: 102#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 103#L18-2 assume !!(main_~y~0#1 >= 0); 106#L19 assume !(main_~x~0#1 <= 50);main_~y~0#1 := main_~y~0#1 - 1; 102#L19-2 [2022-10-17 10:13:39,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:13:39,543 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2022-10-17 10:13:39,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:13:39,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692447492] [2022-10-17 10:13:39,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:13:39,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:13:39,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:13:39,551 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:13:39,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:13:39,558 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:13:39,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:13:39,559 INFO L85 PathProgramCache]: Analyzing trace with hash 47446, now seen corresponding path program 2 times [2022-10-17 10:13:39,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:13:39,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808460896] [2022-10-17 10:13:39,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:13:39,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:13:39,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:13:39,569 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:13:39,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:13:39,574 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:13:39,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:13:39,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1810662097, now seen corresponding path program 1 times [2022-10-17 10:13:39,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:13:39,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034994211] [2022-10-17 10:13:39,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:13:39,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:13:39,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:39,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:13:39,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:13:39,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034994211] [2022-10-17 10:13:39,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034994211] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:13:39,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297541618] [2022-10-17 10:13:39,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:13:39,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:13:39,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:39,666 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:13:39,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-17 10:13:39,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:39,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:13:39,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:13:39,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:13:39,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:13:39,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:13:39,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297541618] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:13:39,758 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:13:39,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-10-17 10:13:39,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427871438] [2022-10-17 10:13:39,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:13:39,803 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:13:39,803 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:13:39,803 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:13:39,804 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:13:39,804 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-10-17 10:13:39,804 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:39,804 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:13:39,804 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:13:39,804 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration2_Loop [2022-10-17 10:13:39,804 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:13:39,805 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:13:39,811 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:13:39,815 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:13:39,827 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:13:39,833 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:13:39,894 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:13:39,895 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-10-17 10:13:39,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:39,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:39,898 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:39,907 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:13:39,907 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:13:39,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-10-17 10:13:39,938 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:13:39,938 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:13:39,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-10-17 10:13:39,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:39,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:39,979 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:39,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-10-17 10:13:39,986 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:13:39,987 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:13:40,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-10-17 10:13:40,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:40,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:40,035 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:40,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-10-17 10:13:40,040 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-10-17 10:13:40,040 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:13:40,107 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:13:40,107 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=50} Honda state: {ULTIMATE.start_main_~x~0#1=50} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=0}, {ULTIMATE.start_main_~x~0#1=0}, {ULTIMATE.start_main_~x~0#1=1}] Lambdas: [8, 12, 1] Nus: [1, 0] [2022-10-17 10:13:40,144 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2022-10-17 10:13:40,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:40,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:40,146 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:40,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-10-17 10:13:40,155 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:13:40,155 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:13:40,170 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:13:40,170 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:13:40,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-10-17 10:13:40,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:40,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:40,194 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:40,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-10-17 10:13:40,199 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:13:40,199 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:13:40,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-10-17 10:13:40,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:40,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:40,235 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:40,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-10-17 10:13:40,236 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-10-17 10:13:40,237 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:13:40,272 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-10-17 10:13:40,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2022-10-17 10:13:40,277 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:13:40,277 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:13:40,277 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:13:40,277 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:13:40,277 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-10-17 10:13:40,277 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:40,278 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:13:40,278 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:13:40,278 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration2_Loop [2022-10-17 10:13:40,278 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:13:40,278 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:13:40,279 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:13:40,296 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:13:40,299 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:13:40,305 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:13:40,402 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:13:40,402 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-10-17 10:13:40,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:40,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:40,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-10-17 10:13:40,415 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:40,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-10-17 10:13:40,471 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:13:40,487 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:13:40,487 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:13:40,487 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:13:40,487 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:13:40,488 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:13:40,489 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:13:40,489 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:13:40,506 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:13:40,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-10-17 10:13:40,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:40,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:40,550 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:40,556 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:13:40,567 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:13:40,567 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:13:40,568 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:13:40,568 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:13:40,571 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-10-17 10:13:40,571 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-10-17 10:13:40,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-10-17 10:13:40,598 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:13:40,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-10-17 10:13:40,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:40,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:40,651 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:40,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-10-17 10:13:40,653 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:13:40,660 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:13:40,660 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:13:40,660 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:13:40,660 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:13:40,661 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:13:40,669 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:13:40,669 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:13:40,681 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-10-17 10:13:40,698 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-10-17 10:13:40,698 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-10-17 10:13:40,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:40,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:40,718 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:40,720 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-10-17 10:13:40,720 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-10-17 10:13:40,720 INFO L513 LassoAnalysis]: Proved termination. [2022-10-17 10:13:40,721 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 2*ULTIMATE.start_main_~y~0#1 + 1 Supporting invariants [] [2022-10-17 10:13:40,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-10-17 10:13:40,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-10-17 10:13:40,763 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-10-17 10:13:40,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:13:40,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:40,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 10:13:40,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:13:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:40,825 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:13:40,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:13:40,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:13:40,857 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-10-17 10:13:40,858 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:13:40,877 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 13 states and 16 transitions. Complement of second has 7 states. [2022-10-17 10:13:40,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-10-17 10:13:40,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:13:40,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2022-10-17 10:13:40,879 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 4 letters. Loop has 3 letters. [2022-10-17 10:13:40,879 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:13:40,879 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 7 letters. Loop has 3 letters. [2022-10-17 10:13:40,880 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:13:40,880 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 4 letters. Loop has 6 letters. [2022-10-17 10:13:40,880 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:13:40,880 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 16 transitions. [2022-10-17 10:13:40,881 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-10-17 10:13:40,882 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 16 transitions. [2022-10-17 10:13:40,882 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2022-10-17 10:13:40,883 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2022-10-17 10:13:40,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 16 transitions. [2022-10-17 10:13:40,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:13:40,883 INFO L218 hiAutomatonCegarLoop]: Abstraction has 13 states and 16 transitions. [2022-10-17 10:13:40,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 16 transitions. [2022-10-17 10:13:40,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-10-17 10:13:40,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:13:40,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2022-10-17 10:13:40,886 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 16 transitions. [2022-10-17 10:13:40,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:13:40,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:13:40,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:13:40,887 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:13:40,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:13:40,912 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-10-17 10:13:40,913 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 20 transitions. [2022-10-17 10:13:40,914 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-10-17 10:13:40,915 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 17 states and 18 transitions. [2022-10-17 10:13:40,915 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2022-10-17 10:13:40,915 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2022-10-17 10:13:40,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 18 transitions. [2022-10-17 10:13:40,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:13:40,916 INFO L218 hiAutomatonCegarLoop]: Abstraction has 17 states and 18 transitions. [2022-10-17 10:13:40,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 18 transitions. [2022-10-17 10:13:40,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2022-10-17 10:13:40,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.0625) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:13:40,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-10-17 10:13:40,920 INFO L240 hiAutomatonCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-10-17 10:13:40,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:13:40,921 INFO L428 stractBuchiCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-10-17 10:13:40,921 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-10-17 10:13:40,922 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 17 transitions. [2022-10-17 10:13:40,923 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-10-17 10:13:40,923 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:13:40,923 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:13:40,924 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 4, 3, 1, 1] [2022-10-17 10:13:40,924 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-10-17 10:13:40,924 INFO L748 eck$LassoCheckResult]: Stem: 240#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 241#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := 0;main_~y~0#1 := 0; 242#L18-2 assume !!(main_~y~0#1 >= 0); 243#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 238#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 239#L18-2 assume !!(main_~y~0#1 >= 0); 253#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 252#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 251#L18-2 assume !!(main_~y~0#1 >= 0); 250#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 249#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 248#L18-2 assume !!(main_~y~0#1 >= 0); 247#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 245#L19-2 [2022-10-17 10:13:40,924 INFO L750 eck$LassoCheckResult]: Loop: 245#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 246#L18-2 assume !!(main_~y~0#1 >= 0); 244#L19 assume !(main_~x~0#1 <= 50);main_~y~0#1 := main_~y~0#1 - 1; 245#L19-2 [2022-10-17 10:13:40,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:13:40,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1702507665, now seen corresponding path program 1 times [2022-10-17 10:13:40,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:13:40,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570893006] [2022-10-17 10:13:40,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:13:40,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:13:40,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:13:40,937 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:13:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:13:40,949 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:13:40,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:13:40,950 INFO L85 PathProgramCache]: Analyzing trace with hash 47446, now seen corresponding path program 3 times [2022-10-17 10:13:40,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:13:40,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191072199] [2022-10-17 10:13:40,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:13:40,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:13:40,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:13:40,956 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:13:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:13:40,960 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:13:40,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:13:40,961 INFO L85 PathProgramCache]: Analyzing trace with hash -137031896, now seen corresponding path program 2 times [2022-10-17 10:13:40,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:13:40,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980952544] [2022-10-17 10:13:40,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:13:40,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:13:40,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:41,128 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:13:41,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:13:41,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980952544] [2022-10-17 10:13:41,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980952544] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:13:41,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327741260] [2022-10-17 10:13:41,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:13:41,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:13:41,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:41,131 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:13:41,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-10-17 10:13:41,163 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 10:13:41,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:13:41,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 10:13:41,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:13:41,212 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:13:41,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:13:41,314 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:13:41,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327741260] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:13:41,315 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:13:41,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-10-17 10:13:41,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373869977] [2022-10-17 10:13:41,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:13:41,351 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:13:41,351 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:13:41,351 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:13:41,351 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:13:41,351 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-10-17 10:13:41,352 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:41,352 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:13:41,352 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:13:41,352 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration3_Loop [2022-10-17 10:13:41,352 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:13:41,352 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:13:41,356 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:13:41,363 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:13:41,366 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:13:41,371 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:13:41,415 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:13:41,416 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-10-17 10:13:41,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:41,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:41,422 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:41,426 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:13:41,426 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:13:41,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-10-17 10:13:41,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-10-17 10:13:41,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:41,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:41,500 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:41,502 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-10-17 10:13:41,502 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:13:41,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-10-17 10:13:41,564 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:13:41,565 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=50} Honda state: {ULTIMATE.start_main_~x~0#1=50} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=0}, {ULTIMATE.start_main_~x~0#1=0}, {ULTIMATE.start_main_~x~0#1=1}] Lambdas: [8, 12, 1] Nus: [1, 0] [2022-10-17 10:13:41,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-10-17 10:13:41,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:41,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:41,609 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:41,611 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:13:41,612 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:13:41,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-10-17 10:13:41,634 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:13:41,634 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-10-17 10:13:41,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-10-17 10:13:41,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:41,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:41,684 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:41,688 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:13:41,689 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:13:41,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-10-17 10:13:41,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2022-10-17 10:13:41,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:41,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:41,737 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:41,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-10-17 10:13:41,739 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-10-17 10:13:41,739 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:13:41,802 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-10-17 10:13:41,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-10-17 10:13:41,807 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:13:41,807 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:13:41,807 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:13:41,808 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:13:41,808 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-10-17 10:13:41,808 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:41,808 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:13:41,808 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:13:41,808 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration3_Loop [2022-10-17 10:13:41,808 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:13:41,808 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:13:41,809 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:13:41,816 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:13:41,819 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:13:41,824 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:13:41,887 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:13:41,887 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-10-17 10:13:41,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:41,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:41,889 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:41,898 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:13:41,907 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:13:41,907 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:13:41,907 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:13:41,907 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:13:41,907 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:13:41,910 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:13:41,910 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:13:41,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-10-17 10:13:41,922 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:13:41,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2022-10-17 10:13:41,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:41,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:41,948 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:41,952 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:13:41,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-10-17 10:13:41,960 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:13:41,961 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:13:41,961 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:13:41,961 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:13:41,963 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-10-17 10:13:41,963 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-10-17 10:13:41,975 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:13:42,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2022-10-17 10:13:42,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:42,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:42,013 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:42,015 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:13:42,025 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:13:42,025 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:13:42,025 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:13:42,025 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:13:42,025 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:13:42,026 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:13:42,026 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:13:42,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-10-17 10:13:42,041 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-10-17 10:13:42,043 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-10-17 10:13:42,043 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-10-17 10:13:42,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:42,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:42,045 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:42,047 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-10-17 10:13:42,047 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-10-17 10:13:42,047 INFO L513 LassoAnalysis]: Proved termination. [2022-10-17 10:13:42,047 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 2*ULTIMATE.start_main_~y~0#1 + 1 Supporting invariants [] [2022-10-17 10:13:42,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-10-17 10:13:42,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2022-10-17 10:13:42,075 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-10-17 10:13:42,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:13:42,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:42,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 10:13:42,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:13:42,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:42,154 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:13:42,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:13:42,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:13:42,184 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-10-17 10:13:42,185 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2022-10-17 10:13:42,199 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) Result 18 states and 19 transitions. Complement of second has 7 states. [2022-10-17 10:13:42,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-10-17 10:13:42,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2022-10-17 10:13:42,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2022-10-17 10:13:42,203 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 13 letters. Loop has 3 letters. [2022-10-17 10:13:42,203 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:13:42,204 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-10-17 10:13:42,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:13:42,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:42,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 10:13:42,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:13:42,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:42,257 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:13:42,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:13:42,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:13:42,287 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2022-10-17 10:13:42,288 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2022-10-17 10:13:42,302 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) Result 18 states and 19 transitions. Complement of second has 7 states. [2022-10-17 10:13:42,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-10-17 10:13:42,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2022-10-17 10:13:42,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2022-10-17 10:13:42,306 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 13 letters. Loop has 3 letters. [2022-10-17 10:13:42,306 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:13:42,306 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-10-17 10:13:42,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:13:42,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:42,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 10:13:42,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:13:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:42,358 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:13:42,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:13:42,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:13:42,382 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-10-17 10:13:42,382 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2022-10-17 10:13:42,396 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) Result 25 states and 27 transitions. Complement of second has 6 states. [2022-10-17 10:13:42,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-10-17 10:13:42,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2022-10-17 10:13:42,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2022-10-17 10:13:42,398 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 13 letters. Loop has 3 letters. [2022-10-17 10:13:42,398 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:13:42,398 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 16 letters. Loop has 3 letters. [2022-10-17 10:13:42,399 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:13:42,399 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 13 letters. Loop has 6 letters. [2022-10-17 10:13:42,400 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:13:42,400 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 27 transitions. [2022-10-17 10:13:42,401 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-10-17 10:13:42,402 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 19 states and 21 transitions. [2022-10-17 10:13:42,402 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2022-10-17 10:13:42,402 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2022-10-17 10:13:42,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 21 transitions. [2022-10-17 10:13:42,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:13:42,403 INFO L218 hiAutomatonCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-10-17 10:13:42,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 21 transitions. [2022-10-17 10:13:42,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2022-10-17 10:13:42,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:13:42,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-10-17 10:13:42,405 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-10-17 10:13:42,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:13:42,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-17 10:13:42,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:13:42,407 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:13:42,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:13:42,447 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2022-10-17 10:13:42,447 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 51 transitions. [2022-10-17 10:13:42,449 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-10-17 10:13:42,450 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 37 states and 39 transitions. [2022-10-17 10:13:42,451 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2022-10-17 10:13:42,451 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2022-10-17 10:13:42,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 39 transitions. [2022-10-17 10:13:42,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 10:13:42,452 INFO L218 hiAutomatonCegarLoop]: Abstraction has 37 states and 39 transitions. [2022-10-17 10:13:42,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 39 transitions. [2022-10-17 10:13:42,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2022-10-17 10:13:42,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 34 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:13:42,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2022-10-17 10:13:42,456 INFO L240 hiAutomatonCegarLoop]: Abstraction has 35 states and 37 transitions. [2022-10-17 10:13:42,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 10:13:42,457 INFO L428 stractBuchiCegarLoop]: Abstraction has 35 states and 37 transitions. [2022-10-17 10:13:42,458 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-10-17 10:13:42,458 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 37 transitions. [2022-10-17 10:13:42,459 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-10-17 10:13:42,459 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 10:13:42,459 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 10:13:42,461 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [9, 9, 9, 1, 1] [2022-10-17 10:13:42,461 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-10-17 10:13:42,461 INFO L748 eck$LassoCheckResult]: Stem: 668#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 669#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := 0;main_~y~0#1 := 0; 670#L18-2 assume !!(main_~y~0#1 >= 0); 671#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 663#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 664#L18-2 assume !!(main_~y~0#1 >= 0); 697#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 696#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 695#L18-2 assume !!(main_~y~0#1 >= 0); 694#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 693#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 692#L18-2 assume !!(main_~y~0#1 >= 0); 691#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 690#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 689#L18-2 assume !!(main_~y~0#1 >= 0); 688#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 687#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 686#L18-2 assume !!(main_~y~0#1 >= 0); 685#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 684#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 683#L18-2 assume !!(main_~y~0#1 >= 0); 682#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 681#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 680#L18-2 assume !!(main_~y~0#1 >= 0); 679#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 678#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 677#L18-2 assume !!(main_~y~0#1 >= 0); 676#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 675#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 667#L18-2 [2022-10-17 10:13:42,462 INFO L750 eck$LassoCheckResult]: Loop: 667#L18-2 assume !!(main_~y~0#1 >= 0); 674#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 673#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 667#L18-2 [2022-10-17 10:13:42,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:13:42,462 INFO L85 PathProgramCache]: Analyzing trace with hash -191897876, now seen corresponding path program 2 times [2022-10-17 10:13:42,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:13:42,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198020626] [2022-10-17 10:13:42,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:13:42,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:13:42,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:13:42,481 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:13:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:13:42,500 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:13:42,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:13:42,505 INFO L85 PathProgramCache]: Analyzing trace with hash 40814, now seen corresponding path program 1 times [2022-10-17 10:13:42,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:13:42,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779120839] [2022-10-17 10:13:42,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:13:42,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:13:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:13:42,511 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:13:42,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:13:42,520 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:13:42,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:13:42,521 INFO L85 PathProgramCache]: Analyzing trace with hash -228141917, now seen corresponding path program 3 times [2022-10-17 10:13:42,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:13:42,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150063147] [2022-10-17 10:13:42,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:13:42,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:13:42,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:13:42,553 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:13:42,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:13:42,571 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:13:42,595 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:13:42,595 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:13:42,595 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:13:42,595 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:13:42,596 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-10-17 10:13:42,596 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:42,602 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:13:42,602 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:13:42,602 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration4_Loop [2022-10-17 10:13:42,602 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:13:42,602 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:13:42,608 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:13:42,631 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:13:42,638 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:13:42,645 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:13:42,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-10-17 10:13:42,719 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:13:42,719 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-10-17 10:13:42,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:42,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:42,734 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:42,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2022-10-17 10:13:42,747 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:13:42,747 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:13:42,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-10-17 10:13:42,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2022-10-17 10:13:42,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:42,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:42,797 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:42,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-10-17 10:13:42,798 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-10-17 10:13:42,798 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:13:42,817 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-10-17 10:13:42,818 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0#1=0} Honda state: {ULTIMATE.start_main_~y~0#1=0} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0#1=0}, {ULTIMATE.start_main_~y~0#1=0}, {ULTIMATE.start_main_~y~0#1=1}] Lambdas: [1, 0, 1] Nus: [0, 0] [2022-10-17 10:13:42,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2022-10-17 10:13:42,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:42,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:42,845 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:42,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-10-17 10:13:42,848 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 10:13:42,848 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:13:42,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2022-10-17 10:13:42,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:42,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:42,879 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:42,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-10-17 10:13:42,881 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-10-17 10:13:42,881 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 10:13:42,945 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-10-17 10:13:42,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2022-10-17 10:13:42,952 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 10:13:42,952 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 10:13:42,952 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 10:13:42,952 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 10:13:42,953 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-10-17 10:13:42,953 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:42,953 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 10:13:42,953 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 10:13:42,953 INFO L133 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration4_Loop [2022-10-17 10:13:42,953 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 10:13:42,953 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 10:13:42,954 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:13:42,960 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:13:42,966 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:13:42,969 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 10:13:43,013 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 10:13:43,014 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-10-17 10:13:43,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:43,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:43,015 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:43,023 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:13:43,034 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:13:43,034 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:13:43,035 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:13:43,035 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:13:43,035 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:13:43,036 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:13:43,036 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:13:43,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-10-17 10:13:43,058 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 10:13:43,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2022-10-17 10:13:43,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:43,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:43,094 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:43,098 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 10:13:43,107 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 10:13:43,108 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 10:13:43,108 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 10:13:43,108 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 10:13:43,108 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 10:13:43,109 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 10:13:43,109 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 10:13:43,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2022-10-17 10:13:43,124 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-10-17 10:13:43,129 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-10-17 10:13:43,129 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-10-17 10:13:43,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 10:13:43,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:13:43,130 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 10:13:43,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2022-10-17 10:13:43,137 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-10-17 10:13:43,137 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-10-17 10:13:43,137 INFO L513 LassoAnalysis]: Proved termination. [2022-10-17 10:13:43,137 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -2*ULTIMATE.start_main_~x~0#1 + 101 Supporting invariants [] [2022-10-17 10:13:43,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2022-10-17 10:13:43,174 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-10-17 10:13:43,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:13:43,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:43,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 10:13:43,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:13:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:13:43,257 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:13:43,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:13:43,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:13:43,273 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-10-17 10:13:43,273 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 37 transitions. cyclomatic complexity: 3 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2022-10-17 10:13:43,290 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 37 transitions. cyclomatic complexity: 3. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) Result 61 states and 65 transitions. Complement of second has 6 states. [2022-10-17 10:13:43,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-10-17 10:13:43,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2022-10-17 10:13:43,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2022-10-17 10:13:43,293 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 29 letters. Loop has 3 letters. [2022-10-17 10:13:43,293 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:13:43,294 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 32 letters. Loop has 3 letters. [2022-10-17 10:13:43,294 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:13:43,294 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 29 letters. Loop has 6 letters. [2022-10-17 10:13:43,295 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 10:13:43,295 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 61 states and 65 transitions. [2022-10-17 10:13:43,302 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-10-17 10:13:43,302 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 61 states to 0 states and 0 transitions. [2022-10-17 10:13:43,303 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-10-17 10:13:43,303 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-10-17 10:13:43,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-10-17 10:13:43,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:13:43,304 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-10-17 10:13:43,304 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-10-17 10:13:43,304 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-10-17 10:13:43,304 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-10-17 10:13:43,304 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-10-17 10:13:43,304 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-10-17 10:13:43,305 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-10-17 10:13:43,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.10 10:13:43 BoogieIcfgContainer [2022-10-17 10:13:43,314 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-10-17 10:13:43,314 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 10:13:43,314 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 10:13:43,315 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 10:13:43,316 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:13:37" (3/4) ... [2022-10-17 10:13:43,319 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-10-17 10:13:43,320 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 10:13:43,321 INFO L158 Benchmark]: Toolchain (without parser) took 6461.59ms. Allocated memory was 111.1MB in the beginning and 157.3MB in the end (delta: 46.1MB). Free memory was 79.6MB in the beginning and 104.1MB in the end (delta: -24.5MB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. [2022-10-17 10:13:43,321 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 111.1MB. Free memory was 62.5MB in the beginning and 62.4MB in the end (delta: 46.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:13:43,324 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.54ms. Allocated memory is still 111.1MB. Free memory was 79.3MB in the beginning and 86.6MB in the end (delta: -7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 10:13:43,324 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.21ms. Allocated memory is still 111.1MB. Free memory was 86.6MB in the beginning and 85.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:13:43,325 INFO L158 Benchmark]: Boogie Preprocessor took 19.99ms. Allocated memory is still 111.1MB. Free memory was 85.4MB in the beginning and 84.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:13:43,326 INFO L158 Benchmark]: RCFGBuilder took 271.98ms. Allocated memory is still 111.1MB. Free memory was 84.2MB in the beginning and 76.2MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 10:13:43,326 INFO L158 Benchmark]: BuchiAutomizer took 5824.66ms. Allocated memory was 111.1MB in the beginning and 157.3MB in the end (delta: 46.1MB). Free memory was 76.2MB in the beginning and 104.1MB in the end (delta: -27.8MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. [2022-10-17 10:13:43,326 INFO L158 Benchmark]: Witness Printer took 5.43ms. Allocated memory is still 157.3MB. Free memory is still 104.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:13:43,329 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 111.1MB. Free memory was 62.5MB in the beginning and 62.4MB in the end (delta: 46.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 299.54ms. Allocated memory is still 111.1MB. Free memory was 79.3MB in the beginning and 86.6MB in the end (delta: -7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.21ms. Allocated memory is still 111.1MB. Free memory was 86.6MB in the beginning and 85.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 19.99ms. Allocated memory is still 111.1MB. Free memory was 85.4MB in the beginning and 84.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 271.98ms. Allocated memory is still 111.1MB. Free memory was 84.2MB in the beginning and 76.2MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 5824.66ms. Allocated memory was 111.1MB in the beginning and 157.3MB in the end (delta: 46.1MB). Free memory was 76.2MB in the beginning and 104.1MB in the end (delta: -27.8MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. * Witness Printer took 5.43ms. Allocated memory is still 157.3MB. Free memory is still 104.1MB. 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 7 terminating modules (3 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * y + 1 and consists of 5 locations. One deterministic module has affine ranking function 2 * y + 1 and consists of 4 locations. One deterministic module has affine ranking function 101 + -2 * x and consists of 4 locations. One nondeterministic module has affine ranking function 2 * y + 1 and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 12 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.7s and 5 iterations. TraceHistogramMax:9. Analysis of lassos took 4.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.8s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 7 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 55 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 49 mSDsluCounter, 83 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 37 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 81 IncrementalHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 46 mSDtfsCounter, 81 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT3 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax164 hnf100 lsp34 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq155 hnf94 smp100 dnf100 smp100 tf112 neg95 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 59ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 4 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-10-17 10:13:43,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2022-10-17 10:13:43,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-10-17 10:13:43,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-10-17 10:13:43,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a486c657-8b69-4428-95df-fd5398725741/bin/uautomizer-J5u9QxTXDZ/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