./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/b.18.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/b.18.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc --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 b7b84dd29ea36609e5f5c61ea995baac9099f3fa2331fbdc558930ff5215a280 --- 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-5e519f3 [2022-11-02 20:52:12,267 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:52:12,270 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:52:12,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:52:12,308 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:52:12,313 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:52:12,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:52:12,319 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:52:12,321 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:52:12,327 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:52:12,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:52:12,330 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:52:12,330 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:52:12,333 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:52:12,335 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:52:12,336 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:52:12,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:52:12,339 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:52:12,340 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:52:12,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:52:12,352 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:52:12,353 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:52:12,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:52:12,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:52:12,366 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:52:12,366 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:52:12,366 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:52:12,368 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:52:12,369 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:52:12,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:52:12,370 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:52:12,372 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:52:12,374 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:52:12,375 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:52:12,376 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:52:12,376 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:52:12,377 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:52:12,377 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:52:12,377 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:52:12,378 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:52:12,379 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:52:12,380 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-02 20:52:12,426 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:52:12,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:52:12,427 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:52:12,427 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:52:12,429 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:52:12,429 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:52:12,429 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:52:12,429 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-02 20:52:12,430 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-02 20:52:12,430 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-02 20:52:12,431 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-02 20:52:12,431 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-02 20:52:12,432 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-02 20:52:12,432 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:52:12,432 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:52:12,432 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:52:12,432 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:52:12,433 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-02 20:52:12,433 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-02 20:52:12,433 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-02 20:52:12,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:52:12,434 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-02 20:52:12,434 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:52:12,434 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-02 20:52:12,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:52:12,434 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:52:12,435 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:52:12,435 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:52:12,436 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-02 20:52:12,436 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_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7b84dd29ea36609e5f5c61ea995baac9099f3fa2331fbdc558930ff5215a280 [2022-11-02 20:52:12,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:52:12,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:52:12,782 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:52:12,784 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:52:12,785 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:52:12,787 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/termination-restricted-15/b.18.c [2022-11-02 20:52:12,879 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/data/a52e8e97a/51375b596e2f44d1b8006c6e9203d58c/FLAG49bc685bc [2022-11-02 20:52:13,432 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:52:13,432 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/sv-benchmarks/c/termination-restricted-15/b.18.c [2022-11-02 20:52:13,437 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/data/a52e8e97a/51375b596e2f44d1b8006c6e9203d58c/FLAG49bc685bc [2022-11-02 20:52:13,808 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/data/a52e8e97a/51375b596e2f44d1b8006c6e9203d58c [2022-11-02 20:52:13,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:52:13,813 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:52:13,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:52:13,818 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:52:13,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:52:13,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:52:13" (1/1) ... [2022-11-02 20:52:13,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c5e77fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:52:13, skipping insertion in model container [2022-11-02 20:52:13,825 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:52:13" (1/1) ... [2022-11-02 20:52:13,833 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:52:13,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:52:14,037 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:52:14,054 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:52:14,075 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:52:14,089 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:52:14,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:52:14 WrapperNode [2022-11-02 20:52:14,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:52:14,093 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:52:14,093 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:52:14,093 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:52:14,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:52:14" (1/1) ... [2022-11-02 20:52:14,109 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:52:14" (1/1) ... [2022-11-02 20:52:14,128 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 25 [2022-11-02 20:52:14,129 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:52:14,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:52:14,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:52:14,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:52:14,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:52:14" (1/1) ... [2022-11-02 20:52:14,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:52:14" (1/1) ... [2022-11-02 20:52:14,143 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:52:14" (1/1) ... [2022-11-02 20:52:14,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:52:14" (1/1) ... [2022-11-02 20:52:14,146 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:52:14" (1/1) ... [2022-11-02 20:52:14,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:52:14" (1/1) ... [2022-11-02 20:52:14,153 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:52:14" (1/1) ... [2022-11-02 20:52:14,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:52:14" (1/1) ... [2022-11-02 20:52:14,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:52:14,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:52:14,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:52:14,158 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:52:14,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:52:14" (1/1) ... [2022-11-02 20:52:14,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:52:14,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:52:14,198 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:52:14,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-02 20:52:14,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:52:14,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:52:14,328 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:52:14,331 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:52:14,443 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:52:14,450 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:52:14,451 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-02 20:52:14,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:52:14 BoogieIcfgContainer [2022-11-02 20:52:14,453 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:52:14,454 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-02 20:52:14,454 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-02 20:52:14,460 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-02 20:52:14,461 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 20:52:14,461 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 02.11 08:52:13" (1/3) ... [2022-11-02 20:52:14,462 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4693006b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 08:52:14, skipping insertion in model container [2022-11-02 20:52:14,462 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 20:52:14,462 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:52:14" (2/3) ... [2022-11-02 20:52:14,463 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4693006b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 08:52:14, skipping insertion in model container [2022-11-02 20:52:14,463 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 20:52:14,463 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:52:14" (3/3) ... [2022-11-02 20:52:14,465 INFO L332 chiAutomizerObserver]: Analyzing ICFG b.18.c [2022-11-02 20:52:14,550 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-02 20:52:14,550 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-02 20:52:14,551 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-02 20:52:14,551 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-02 20:52:14,551 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-02 20:52:14,551 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-02 20:52:14,551 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-02 20:52:14,551 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-02 20:52:14,556 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 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) [2022-11-02 20:52:14,583 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-02 20:52:14,583 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:52:14,583 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:52:14,590 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-02 20:52:14,590 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-02 20:52:14,591 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-02 20:52:14,591 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 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) [2022-11-02 20:52:14,593 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-02 20:52:14,593 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:52:14,593 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:52:14,594 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-02 20:52:14,594 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-02 20:52:14,604 INFO L748 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 4#L15-3true [2022-11-02 20:52:14,605 INFO L750 eck$LassoCheckResult]: Loop: 4#L15-3true assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 5#L10true assume main_~x~0#1 > main_~y~0#1; 9#L11-2true assume !(main_~x~0#1 > 0); 4#L15-3true [2022-11-02 20:52:14,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:14,612 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-11-02 20:52:14,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:14,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479990789] [2022-11-02 20:52:14,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:14,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:52:14,714 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:52:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:52:14,752 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:52:14,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:14,757 INFO L85 PathProgramCache]: Analyzing trace with hash 40817, now seen corresponding path program 1 times [2022-11-02 20:52:14,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:14,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515741169] [2022-11-02 20:52:14,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:14,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:14,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:14,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:52:14,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:14,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515741169] [2022-11-02 20:52:14,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515741169] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:14,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:14,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:52:14,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246245037] [2022-11-02 20:52:14,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:14,894 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-02 20:52:14,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:14,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:52:14,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:52:14,944 INFO L87 Difference]: Start difference. First operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 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) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:14,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:52:14,990 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2022-11-02 20:52:14,992 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 19 transitions. [2022-11-02 20:52:14,993 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-11-02 20:52:14,996 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 8 states and 11 transitions. [2022-11-02 20:52:14,997 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-11-02 20:52:14,998 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-11-02 20:52:14,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2022-11-02 20:52:14,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:14,999 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-11-02 20:52:15,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2022-11-02 20:52:15,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2022-11-02 20:52:15,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:15,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2022-11-02 20:52:15,071 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 10 transitions. [2022-11-02 20:52:15,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:52:15,076 INFO L428 stractBuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2022-11-02 20:52:15,076 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-02 20:52:15,077 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2022-11-02 20:52:15,077 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-02 20:52:15,077 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:52:15,092 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:52:15,093 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-02 20:52:15,093 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-02 20:52:15,094 INFO L748 eck$LassoCheckResult]: Stem: 35#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 36#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 37#L15-3 [2022-11-02 20:52:15,094 INFO L750 eck$LassoCheckResult]: Loop: 37#L15-3 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 38#L10 assume !(main_~x~0#1 > main_~y~0#1); 39#L15-2 assume !(main_~y~0#1 > 0); 37#L15-3 [2022-11-02 20:52:15,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:15,095 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2022-11-02 20:52:15,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:15,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044246389] [2022-11-02 20:52:15,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:15,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:15,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:52:15,100 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:52:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:52:15,103 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:52:15,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:15,104 INFO L85 PathProgramCache]: Analyzing trace with hash 41265, now seen corresponding path program 1 times [2022-11-02 20:52:15,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:15,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206335326] [2022-11-02 20:52:15,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:15,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:15,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:15,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:52:15,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:15,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206335326] [2022-11-02 20:52:15,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206335326] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:15,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:15,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:52:15,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970218013] [2022-11-02 20:52:15,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:15,148 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-02 20:52:15,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:15,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:52:15,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:52:15,151 INFO L87 Difference]: Start difference. First operand 7 states and 10 transitions. cyclomatic complexity: 4 Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:15,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:52:15,180 INFO L93 Difference]: Finished difference Result 9 states and 12 transitions. [2022-11-02 20:52:15,181 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 12 transitions. [2022-11-02 20:52:15,181 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2022-11-02 20:52:15,183 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 9 states and 12 transitions. [2022-11-02 20:52:15,184 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2022-11-02 20:52:15,184 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2022-11-02 20:52:15,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 12 transitions. [2022-11-02 20:52:15,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:15,186 INFO L218 hiAutomatonCegarLoop]: Abstraction has 9 states and 12 transitions. [2022-11-02 20:52:15,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 12 transitions. [2022-11-02 20:52:15,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2022-11-02 20:52:15,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:15,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2022-11-02 20:52:15,189 INFO L240 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-11-02 20:52:15,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:52:15,190 INFO L428 stractBuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-11-02 20:52:15,191 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-02 20:52:15,191 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2022-11-02 20:52:15,192 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-11-02 20:52:15,193 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:52:15,193 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:52:15,193 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-02 20:52:15,193 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-02 20:52:15,194 INFO L748 eck$LassoCheckResult]: Stem: 57#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 58#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 59#L15-3 [2022-11-02 20:52:15,194 INFO L750 eck$LassoCheckResult]: Loop: 59#L15-3 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 60#L10 assume !(main_~x~0#1 > main_~y~0#1); 61#L15-2 assume !!(main_~y~0#1 > 0);main_~y~0#1 := main_~y~0#1 - 1; 64#L15-2 assume !(main_~y~0#1 > 0); 59#L15-3 [2022-11-02 20:52:15,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:15,196 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2022-11-02 20:52:15,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:15,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577035846] [2022-11-02 20:52:15,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:15,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:15,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:52:15,205 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:52:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:52:15,209 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:52:15,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:15,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1279312, now seen corresponding path program 1 times [2022-11-02 20:52:15,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:15,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422542550] [2022-11-02 20:52:15,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:15,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:52:15,222 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:52:15,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:52:15,234 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:52:15,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:15,236 INFO L85 PathProgramCache]: Analyzing trace with hash 889706514, now seen corresponding path program 1 times [2022-11-02 20:52:15,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:15,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305320186] [2022-11-02 20:52:15,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:15,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:15,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:52:15,254 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:52:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:52:15,265 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:52:15,354 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:52:15,355 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:52:15,355 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:52:15,356 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:52:15,356 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-02 20:52:15,356 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:52:15,356 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:52:15,357 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:52:15,357 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.18.c_Iteration3_Loop [2022-11-02 20:52:15,357 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:52:15,357 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:52:15,379 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:52:15,403 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:52:15,409 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:52:15,518 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:52:15,522 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-02 20:52:15,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:52:15,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:52:15,536 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:52:15,542 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:52:15,543 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:52:15,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-02 20:52:15,573 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:52:15,573 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:52:15,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:52:15,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:52:15,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:52:15,619 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:52:15,630 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:52:15,630 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:52:15,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-02 20:52:15,661 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:52:15,661 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:52:15,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:52:15,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:52:15,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:52:15,706 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:52:15,714 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:52:15,715 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:52:15,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-02 20:52:15,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:52:15,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:52:15,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:52:15,796 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:52:15,804 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-02 20:52:15,804 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:52:15,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-02 20:52:15,970 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-02 20:52:15,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:52:15,980 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:52:15,980 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:52:15,980 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:52:15,980 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:52:15,981 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-02 20:52:15,981 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:52:15,981 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:52:15,981 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:52:15,981 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.18.c_Iteration3_Loop [2022-11-02 20:52:15,981 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:52:15,981 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:52:15,983 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:52:15,990 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:52:15,996 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:52:16,077 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:52:16,093 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-02 20:52:16,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:52:16,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:52:16,096 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:52:16,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-02 20:52:16,118 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:52:16,135 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:52:16,135 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:52:16,135 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:52:16,135 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:52:16,141 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-02 20:52:16,141 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-02 20:52:16,162 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:52:16,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:52:16,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:52:16,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:52:16,194 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:52:16,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-02 20:52:16,201 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:52:16,214 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:52:16,214 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:52:16,214 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:52:16,214 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:52:16,222 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-02 20:52:16,222 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-02 20:52:16,247 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:52:16,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:52:16,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:52:16,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:52:16,288 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:52:16,298 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:52:16,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-02 20:52:16,311 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:52:16,311 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:52:16,312 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:52:16,312 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:52:16,312 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:52:16,315 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:52:16,315 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:52:16,332 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-02 20:52:16,340 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-02 20:52:16,340 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-02 20:52:16,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:52:16,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:52:16,344 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:52:16,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-02 20:52:16,349 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-02 20:52:16,349 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-02 20:52:16,349 INFO L513 LassoAnalysis]: Proved termination. [2022-11-02 20:52:16,350 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2022-11-02 20:52:16,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:52:16,393 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-02 20:52:16,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:16,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:16,419 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:52:16,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:52:16,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:16,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:52:16,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:52:16,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:52:16,466 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-02 20:52:16,467 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:16,515 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 17 states and 24 transitions. Complement of second has 6 states. [2022-11-02 20:52:16,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-02 20:52:16,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:16,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2022-11-02 20:52:16,520 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 2 letters. Loop has 4 letters. [2022-11-02 20:52:16,521 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:52:16,521 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 6 letters. Loop has 4 letters. [2022-11-02 20:52:16,521 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:52:16,522 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 2 letters. Loop has 8 letters. [2022-11-02 20:52:16,522 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:52:16,522 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 24 transitions. [2022-11-02 20:52:16,523 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-02 20:52:16,524 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 16 states and 22 transitions. [2022-11-02 20:52:16,524 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2022-11-02 20:52:16,524 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2022-11-02 20:52:16,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 22 transitions. [2022-11-02 20:52:16,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:52:16,525 INFO L218 hiAutomatonCegarLoop]: Abstraction has 16 states and 22 transitions. [2022-11-02 20:52:16,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 22 transitions. [2022-11-02 20:52:16,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 13. [2022-11-02 20:52:16,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 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) [2022-11-02 20:52:16,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2022-11-02 20:52:16,527 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 19 transitions. [2022-11-02 20:52:16,527 INFO L428 stractBuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2022-11-02 20:52:16,528 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-02 20:52:16,528 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 19 transitions. [2022-11-02 20:52:16,528 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-02 20:52:16,528 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:52:16,529 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:52:16,529 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-02 20:52:16,529 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-02 20:52:16,529 INFO L748 eck$LassoCheckResult]: Stem: 123#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 124#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 132#L15-3 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 126#L10 [2022-11-02 20:52:16,530 INFO L750 eck$LassoCheckResult]: Loop: 126#L10 assume main_~x~0#1 > main_~y~0#1; 129#L11-2 assume !!(main_~x~0#1 > 0);main_~x~0#1 := main_~x~0#1 - 1; 133#L11-2 assume !(main_~x~0#1 > 0); 125#L15-3 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 126#L10 [2022-11-02 20:52:16,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:16,530 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2022-11-02 20:52:16,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:16,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220603548] [2022-11-02 20:52:16,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:16,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:16,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:52:16,535 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:52:16,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:52:16,538 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:52:16,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:16,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1363360, now seen corresponding path program 1 times [2022-11-02 20:52:16,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:16,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701292147] [2022-11-02 20:52:16,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:16,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:16,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:16,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:52:16,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:52:16,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701292147] [2022-11-02 20:52:16,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701292147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:52:16,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:52:16,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:52:16,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939197828] [2022-11-02 20:52:16,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:52:16,560 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-02 20:52:16,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:52:16,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:52:16,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:52:16,561 INFO L87 Difference]: Start difference. First operand 13 states and 19 transitions. cyclomatic complexity: 8 Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:16,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:52:16,569 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2022-11-02 20:52:16,570 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 19 transitions. [2022-11-02 20:52:16,571 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-11-02 20:52:16,571 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 11 states and 14 transitions. [2022-11-02 20:52:16,571 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2022-11-02 20:52:16,571 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2022-11-02 20:52:16,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2022-11-02 20:52:16,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 20:52:16,572 INFO L218 hiAutomatonCegarLoop]: Abstraction has 11 states and 14 transitions. [2022-11-02 20:52:16,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2022-11-02 20:52:16,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2022-11-02 20:52:16,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:16,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2022-11-02 20:52:16,574 INFO L240 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2022-11-02 20:52:16,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:52:16,575 INFO L428 stractBuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2022-11-02 20:52:16,576 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-02 20:52:16,576 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2022-11-02 20:52:16,576 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-11-02 20:52:16,577 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:52:16,577 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:52:16,577 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-11-02 20:52:16,577 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-11-02 20:52:16,578 INFO L748 eck$LassoCheckResult]: Stem: 157#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 158#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 165#L15-3 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 160#L10 assume main_~x~0#1 > main_~y~0#1; 163#L11-2 [2022-11-02 20:52:16,578 INFO L750 eck$LassoCheckResult]: Loop: 163#L11-2 assume !!(main_~x~0#1 > 0);main_~x~0#1 := main_~x~0#1 - 1; 163#L11-2 [2022-11-02 20:52:16,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:16,578 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2022-11-02 20:52:16,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:16,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937149304] [2022-11-02 20:52:16,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:16,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:16,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:52:16,585 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:52:16,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:52:16,589 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:52:16,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:16,590 INFO L85 PathProgramCache]: Analyzing trace with hash 54, now seen corresponding path program 1 times [2022-11-02 20:52:16,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:16,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382938072] [2022-11-02 20:52:16,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:16,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:52:16,595 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:52:16,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:52:16,598 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:52:16,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:16,599 INFO L85 PathProgramCache]: Analyzing trace with hash 28699761, now seen corresponding path program 1 times [2022-11-02 20:52:16,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:52:16,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710923534] [2022-11-02 20:52:16,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:52:16,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:52:16,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:52:16,605 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:52:16,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:52:16,610 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:52:16,625 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:52:16,626 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:52:16,626 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:52:16,626 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:52:16,626 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-02 20:52:16,626 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:52:16,627 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:52:16,627 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:52:16,627 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.18.c_Iteration5_Loop [2022-11-02 20:52:16,627 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:52:16,627 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:52:16,628 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:52:16,632 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:52:16,636 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:52:16,674 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:52:16,674 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-02 20:52:16,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:52:16,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:52:16,676 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:52:16,685 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:52:16,685 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:52:16,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-02 20:52:16,708 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:52:16,708 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 20:52:16,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:52:16,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:52:16,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:52:16,761 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:52:16,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-02 20:52:16,763 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:52:16,763 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:52:16,784 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 20:52:16,785 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: [] [2022-11-02 20:52:16,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:52:16,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:52:16,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:52:16,826 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:52:16,833 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 20:52:16,833 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:52:16,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-02 20:52:16,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:52:16,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:52:16,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:52:16,896 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:52:16,904 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-02 20:52:16,904 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 20:52:16,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-02 20:52:16,959 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-02 20:52:16,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:52:16,962 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 20:52:16,963 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 20:52:16,963 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 20:52:16,963 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 20:52:16,963 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-02 20:52:16,963 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:52:16,963 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 20:52:16,963 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 20:52:16,963 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.18.c_Iteration5_Loop [2022-11-02 20:52:16,963 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 20:52:16,963 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 20:52:16,965 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:52:16,976 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:52:16,979 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 20:52:17,034 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 20:52:17,035 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-02 20:52:17,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:52:17,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:52:17,036 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:52:17,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-02 20:52:17,039 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:52:17,050 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:52:17,050 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:52:17,050 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:52:17,050 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:52:17,054 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-02 20:52:17,054 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-02 20:52:17,069 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:52:17,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2022-11-02 20:52:17,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:52:17,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:52:17,094 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:52:17,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-02 20:52:17,100 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:52:17,110 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:52:17,110 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:52:17,110 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:52:17,111 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:52:17,114 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-02 20:52:17,114 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-02 20:52:17,150 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 20:52:17,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-02 20:52:17,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:52:17,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:52:17,193 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:52:17,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-02 20:52:17,204 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 20:52:17,218 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 20:52:17,218 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 20:52:17,218 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 20:52:17,218 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 20:52:17,219 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 20:52:17,220 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 20:52:17,221 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 20:52:17,230 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-02 20:52:17,234 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-02 20:52:17,235 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-02 20:52:17,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:52:17,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:52:17,238 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:52:17,247 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-02 20:52:17,247 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-02 20:52:17,247 INFO L513 LassoAnalysis]: Proved termination. [2022-11-02 20:52:17,248 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2022-11-02 20:52:17,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-02 20:52:17,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:52:17,275 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-02 20:52:17,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:52:17,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:17,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:52:17,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:52:17,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:52:17,311 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:52:17,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:52:17,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:52:17,312 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-11-02 20:52:17,313 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:17,323 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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 11 states and 14 transitions. Complement of second has 2 states. [2022-11-02 20:52:17,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2022-11-02 20:52:17,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:52:17,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 8 transitions. [2022-11-02 20:52:17,329 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 8 transitions. Stem has 4 letters. Loop has 1 letters. [2022-11-02 20:52:17,329 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:52:17,329 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 8 transitions. Stem has 5 letters. Loop has 1 letters. [2022-11-02 20:52:17,329 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:52:17,330 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2022-11-02 20:52:17,330 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 20:52:17,330 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 14 transitions. [2022-11-02 20:52:17,331 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-02 20:52:17,332 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2022-11-02 20:52:17,332 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-02 20:52:17,332 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-02 20:52:17,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-02 20:52:17,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:52:17,333 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-02 20:52:17,333 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-02 20:52:17,333 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-02 20:52:17,333 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-02 20:52:17,333 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-02 20:52:17,333 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-02 20:52:17,334 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-02 20:52:17,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 02.11 08:52:17 BoogieIcfgContainer [2022-11-02 20:52:17,342 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-02 20:52:17,343 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:52:17,343 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:52:17,343 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:52:17,344 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:52:14" (3/4) ... [2022-11-02 20:52:17,347 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 20:52:17,347 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:52:17,348 INFO L158 Benchmark]: Toolchain (without parser) took 3535.08ms. Allocated memory is still 123.7MB. Free memory was 91.8MB in the beginning and 55.7MB in the end (delta: 36.2MB). Peak memory consumption was 33.2MB. Max. memory is 16.1GB. [2022-11-02 20:52:17,349 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 92.3MB. Free memory is still 45.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:52:17,356 INFO L158 Benchmark]: CACSL2BoogieTranslator took 273.93ms. Allocated memory is still 123.7MB. Free memory was 91.8MB in the beginning and 100.7MB in the end (delta: -8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:52:17,361 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.02ms. Allocated memory is still 123.7MB. Free memory was 100.7MB in the beginning and 99.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:52:17,361 INFO L158 Benchmark]: Boogie Preprocessor took 26.00ms. Allocated memory is still 123.7MB. Free memory was 99.5MB in the beginning and 98.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:52:17,362 INFO L158 Benchmark]: RCFGBuilder took 295.61ms. Allocated memory is still 123.7MB. Free memory was 98.3MB in the beginning and 89.5MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:52:17,363 INFO L158 Benchmark]: BuchiAutomizer took 2888.51ms. Allocated memory is still 123.7MB. Free memory was 89.5MB in the beginning and 56.3MB in the end (delta: 33.2MB). Peak memory consumption was 34.2MB. Max. memory is 16.1GB. [2022-11-02 20:52:17,364 INFO L158 Benchmark]: Witness Printer took 4.47ms. Allocated memory is still 123.7MB. Free memory was 56.3MB in the beginning and 55.7MB in the end (delta: 630.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:52:17,366 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 92.3MB. Free memory is still 45.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 273.93ms. Allocated memory is still 123.7MB. Free memory was 91.8MB in the beginning and 100.7MB in the end (delta: -8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.02ms. Allocated memory is still 123.7MB. Free memory was 100.7MB in the beginning and 99.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.00ms. Allocated memory is still 123.7MB. Free memory was 99.5MB in the beginning and 98.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 295.61ms. Allocated memory is still 123.7MB. Free memory was 98.3MB in the beginning and 89.5MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 2888.51ms. Allocated memory is still 123.7MB. Free memory was 89.5MB in the beginning and 56.3MB in the end (delta: 33.2MB). Peak memory consumption was 34.2MB. Max. memory is 16.1GB. * Witness Printer took 4.47ms. Allocated memory is still 123.7MB. Free memory was 56.3MB in the beginning and 55.7MB in the end (delta: 630.3kB). 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 5 terminating modules (3 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function x and consists of 2 locations. 3 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.8s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 2.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 4 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 [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 29 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27 mSDsluCounter, 49 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 34 IncrementalHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 39 mSDtfsCounter, 34 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI3 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax193 hnf100 lsp52 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq146 hnf94 smp89 dnf100 smp100 tf112 neg94 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 67ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-11-02 20:52:17,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-02 20:52:17,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:52:17,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a22928e-bf1a-4f72-adac-d599eb707bb5/bin/uautomizer-Dbtcem3rbc/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