./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-bwb/not-02.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-bwb/not-02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash cfe6ed4448f30e820e637790713dc0ec4fdfca7b3d31473209834061c21efd0d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 11:02:11,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 11:02:11,430 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 11:02:11,463 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 11:02:11,464 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 11:02:11,465 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 11:02:11,467 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 11:02:11,470 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 11:02:11,472 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 11:02:11,473 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 11:02:11,474 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 11:02:11,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 11:02:11,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 11:02:11,478 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 11:02:11,479 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 11:02:11,481 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 11:02:11,482 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 11:02:11,483 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 11:02:11,486 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 11:02:11,488 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 11:02:11,490 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 11:02:11,491 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 11:02:11,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 11:02:11,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 11:02:11,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 11:02:11,500 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 11:02:11,500 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 11:02:11,501 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 11:02:11,502 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 11:02:11,503 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 11:02:11,504 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 11:02:11,505 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 11:02:11,506 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 11:02:11,507 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 11:02:11,508 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 11:02:11,508 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 11:02:11,509 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 11:02:11,510 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 11:02:11,510 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 11:02:11,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 11:02:11,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 11:02:11,514 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-10-17 11:02:11,555 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 11:02:11,555 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 11:02:11,556 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 11:02:11,556 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 11:02:11,557 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 11:02:11,558 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 11:02:11,558 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 11:02:11,558 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-10-17 11:02:11,559 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-10-17 11:02:11,559 INFO L138 SettingsManager]: * Use old map elimination=false [2022-10-17 11:02:11,559 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-10-17 11:02:11,559 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-10-17 11:02:11,560 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-10-17 11:02:11,560 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 11:02:11,560 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 11:02:11,560 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 11:02:11,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 11:02:11,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-10-17 11:02:11,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-10-17 11:02:11,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-10-17 11:02:11,562 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 11:02:11,562 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-10-17 11:02:11,562 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 11:02:11,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-10-17 11:02:11,563 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 11:02:11,563 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 11:02:11,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 11:02:11,564 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 11:02:11,565 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-10-17 11:02:11,565 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_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cfe6ed4448f30e820e637790713dc0ec4fdfca7b3d31473209834061c21efd0d [2022-10-17 11:02:11,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 11:02:11,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 11:02:11,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 11:02:11,934 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 11:02:11,936 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 11:02:11,938 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/termination-bwb/not-02.c [2022-10-17 11:02:12,014 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/data/5d57cfe08/7d32c6fbcbb542238ece0597a379789f/FLAG94b6e31ac [2022-10-17 11:02:12,451 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 11:02:12,451 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/sv-benchmarks/c/termination-bwb/not-02.c [2022-10-17 11:02:12,468 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/data/5d57cfe08/7d32c6fbcbb542238ece0597a379789f/FLAG94b6e31ac [2022-10-17 11:02:12,848 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/data/5d57cfe08/7d32c6fbcbb542238ece0597a379789f [2022-10-17 11:02:12,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 11:02:12,855 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 11:02:12,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 11:02:12,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 11:02:12,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 11:02:12,862 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:02:12" (1/1) ... [2022-10-17 11:02:12,865 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7954da47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:12, skipping insertion in model container [2022-10-17 11:02:12,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:02:12" (1/1) ... [2022-10-17 11:02:12,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 11:02:12,886 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 11:02:13,106 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:02:13,111 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 11:02:13,128 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:02:13,141 INFO L208 MainTranslator]: Completed translation [2022-10-17 11:02:13,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:13 WrapperNode [2022-10-17 11:02:13,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 11:02:13,144 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 11:02:13,144 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 11:02:13,144 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 11:02:13,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:13" (1/1) ... [2022-10-17 11:02:13,160 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:13" (1/1) ... [2022-10-17 11:02:13,178 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2022-10-17 11:02:13,179 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 11:02:13,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 11:02:13,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 11:02:13,181 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 11:02:13,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:13" (1/1) ... [2022-10-17 11:02:13,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:13" (1/1) ... [2022-10-17 11:02:13,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:13" (1/1) ... [2022-10-17 11:02:13,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:13" (1/1) ... [2022-10-17 11:02:13,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:13" (1/1) ... [2022-10-17 11:02:13,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:13" (1/1) ... [2022-10-17 11:02:13,201 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:13" (1/1) ... [2022-10-17 11:02:13,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:13" (1/1) ... [2022-10-17 11:02:13,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 11:02:13,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 11:02:13,207 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 11:02:13,207 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 11:02:13,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:13" (1/1) ... [2022-10-17 11:02:13,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 11:02:13,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:02:13,250 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 11:02:13,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-10-17 11:02:13,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 11:02:13,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 11:02:13,352 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 11:02:13,355 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 11:02:13,466 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 11:02:13,474 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 11:02:13,475 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 11:02:13,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:02:13 BoogieIcfgContainer [2022-10-17 11:02:13,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 11:02:13,479 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-10-17 11:02:13,479 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-10-17 11:02:13,485 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-10-17 11:02:13,485 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 11:02:13,486 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 17.10 11:02:12" (1/3) ... [2022-10-17 11:02:13,490 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2412b20f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.10 11:02:13, skipping insertion in model container [2022-10-17 11:02:13,491 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 11:02:13,491 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:02:13" (2/3) ... [2022-10-17 11:02:13,491 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2412b20f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.10 11:02:13, skipping insertion in model container [2022-10-17 11:02:13,491 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 11:02:13,491 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:02:13" (3/3) ... [2022-10-17 11:02:13,493 INFO L332 chiAutomizerObserver]: Analyzing ICFG not-02.c [2022-10-17 11:02:13,549 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-10-17 11:02:13,549 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-10-17 11:02:13,550 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-10-17 11:02:13,550 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-10-17 11:02:13,550 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-10-17 11:02:13,550 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-10-17 11:02:13,550 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-10-17 11:02:13,551 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-10-17 11:02:13,555 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:13,572 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-10-17 11:02:13,573 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 11:02:13,573 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 11:02:13,578 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-10-17 11:02:13,578 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-10-17 11:02:13,579 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-10-17 11:02:13,579 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:13,580 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-10-17 11:02:13,580 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 11:02:13,580 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 11:02:13,581 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-10-17 11:02:13,581 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-10-17 11:02:13,588 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_~a~0#1, main_~x~0#1, main_~y~0#1;havoc main_~a~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;main_~a~0#1 := 1; 6#L21-2true [2022-10-17 11:02:13,589 INFO L750 eck$LassoCheckResult]: Loop: 6#L21-2true assume !!(0 != main_~x~0#1 && 0 != main_~y~0#1);main_~a~0#1 := main_~x~0#1;main_~x~0#1 := main_~y~0#1; 5#L21true assume !(main_~a~0#1 >= 0);assume main_~y~0#1 >= 0; 6#L21-2true [2022-10-17 11:02:13,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:13,595 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-10-17 11:02:13,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:13,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062021959] [2022-10-17 11:02:13,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:13,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:13,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:02:13,684 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 11:02:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:02:13,704 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 11:02:13,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:13,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 1 times [2022-10-17 11:02:13,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:13,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477924726] [2022-10-17 11:02:13,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:13,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:13,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:02:13,722 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 11:02:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:02:13,729 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 11:02:13,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:13,731 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2022-10-17 11:02:13,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:13,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759644705] [2022-10-17 11:02:13,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:13,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:13,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:02:13,740 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 11:02:13,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:02:13,747 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 11:02:13,843 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 11:02:13,844 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 11:02:13,844 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 11:02:13,844 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 11:02:13,844 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-10-17 11:02:13,845 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 11:02:13,845 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 11:02:13,845 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 11:02:13,845 INFO L133 ssoRankerPreferences]: Filename of dumped script: not-02.c_Iteration1_Loop [2022-10-17 11:02:13,846 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 11:02:13,846 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 11:02:13,864 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 11:02:13,990 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 11:02:13,991 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-10-17 11:02:13,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 11:02:13,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:02:13,995 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 11:02:14,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-10-17 11:02:14,010 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 11:02:14,010 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 11:02:14,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-10-17 11:02:14,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 11:02:14,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:02:14,089 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 11:02:14,101 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-10-17 11:02:14,101 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 11:02:14,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-10-17 11:02:14,971 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-10-17 11:02:14,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2022-10-17 11:02:14,980 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 11:02:14,981 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 11:02:14,981 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 11:02:14,981 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 11:02:14,981 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-10-17 11:02:14,982 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 11:02:14,982 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 11:02:14,982 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 11:02:14,982 INFO L133 ssoRankerPreferences]: Filename of dumped script: not-02.c_Iteration1_Loop [2022-10-17 11:02:14,982 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 11:02:14,982 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 11:02:14,984 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 11:02:15,071 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 11:02:15,076 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-10-17 11:02:15,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 11:02:15,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:02:15,078 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 11:02:15,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-10-17 11:02:15,090 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 11:02:15,104 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 11:02:15,104 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 11:02:15,105 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 11:02:15,105 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 11:02:15,105 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 11:02:15,109 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 11:02:15,109 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 11:02:15,120 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-10-17 11:02:15,127 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-10-17 11:02:15,127 INFO L444 ModelExtractionUtils]: 3 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-10-17 11:02:15,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 11:02:15,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:02:15,133 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 11:02:15,138 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-10-17 11:02:15,138 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-10-17 11:02:15,139 INFO L513 LassoAnalysis]: Proved termination. [2022-10-17 11:02:15,140 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 [] [2022-10-17 11:02:15,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-10-17 11:02:15,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-10-17 11:02:15,179 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-10-17 11:02:15,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:15,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 11:02:15,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:02:15,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:15,226 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 11:02:15,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:02:15,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:15,304 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-10-17 11:02:15,307 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:15,361 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 28 states and 36 transitions. Complement of second has 8 states. [2022-10-17 11:02:15,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-10-17 11:02:15,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:15,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2022-10-17 11:02:15,395 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 2 letters. Loop has 2 letters. [2022-10-17 11:02:15,400 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 11:02:15,400 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 4 letters. Loop has 2 letters. [2022-10-17 11:02:15,401 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 11:02:15,401 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 2 letters. Loop has 4 letters. [2022-10-17 11:02:15,401 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 11:02:15,402 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 36 transitions. [2022-10-17 11:02:15,405 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-10-17 11:02:15,412 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 9 states and 12 transitions. [2022-10-17 11:02:15,413 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2022-10-17 11:02:15,414 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2022-10-17 11:02:15,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 12 transitions. [2022-10-17 11:02:15,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 11:02:15,415 INFO L218 hiAutomatonCegarLoop]: Abstraction has 9 states and 12 transitions. [2022-10-17 11:02:15,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 12 transitions. [2022-10-17 11:02:15,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-10-17 11:02:15,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2022-10-17 11:02:15,472 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) [2022-10-17 11:02:15,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2022-10-17 11:02:15,474 INFO L240 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-10-17 11:02:15,474 INFO L428 stractBuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-10-17 11:02:15,474 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-10-17 11:02:15,475 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2022-10-17 11:02:15,477 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-10-17 11:02:15,477 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 11:02:15,477 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 11:02:15,478 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-10-17 11:02:15,478 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-10-17 11:02:15,478 INFO L748 eck$LassoCheckResult]: Stem: 74#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 75#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_~a~0#1, main_~x~0#1, main_~y~0#1;havoc main_~a~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;main_~a~0#1 := 1; 81#L21-2 assume !!(0 != main_~x~0#1 && 0 != main_~y~0#1);main_~a~0#1 := main_~x~0#1;main_~x~0#1 := main_~y~0#1; 76#L21 assume main_~a~0#1 >= 0;assume main_~y~0#1 < 0; 77#L21-2 [2022-10-17 11:02:15,479 INFO L750 eck$LassoCheckResult]: Loop: 77#L21-2 assume !!(0 != main_~x~0#1 && 0 != main_~y~0#1);main_~a~0#1 := main_~x~0#1;main_~x~0#1 := main_~y~0#1; 80#L21 assume !(main_~a~0#1 >= 0);assume main_~y~0#1 >= 0; 77#L21-2 [2022-10-17 11:02:15,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:15,484 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2022-10-17 11:02:15,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:15,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36768361] [2022-10-17 11:02:15,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:15,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:15,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:02:15,504 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 11:02:15,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:02:15,510 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 11:02:15,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:15,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 2 times [2022-10-17 11:02:15,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:15,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138640869] [2022-10-17 11:02:15,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:15,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:15,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:02:15,517 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 11:02:15,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:02:15,522 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 11:02:15,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:15,522 INFO L85 PathProgramCache]: Analyzing trace with hash 889692235, now seen corresponding path program 1 times [2022-10-17 11:02:15,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:15,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242428570] [2022-10-17 11:02:15,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:15,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:15,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:15,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:15,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:02:15,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242428570] [2022-10-17 11:02:15,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242428570] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:02:15,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:02:15,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 11:02:15,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26497906] [2022-10-17 11:02:15,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:02:15,620 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 11:02:15,621 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 11:02:15,621 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 11:02:15,621 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 11:02:15,621 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-10-17 11:02:15,621 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 11:02:15,622 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 11:02:15,622 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 11:02:15,622 INFO L133 ssoRankerPreferences]: Filename of dumped script: not-02.c_Iteration2_Loop [2022-10-17 11:02:15,622 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 11:02:15,622 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 11:02:15,623 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 11:02:15,704 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 11:02:15,705 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-10-17 11:02:15,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 11:02:15,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:02:15,706 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 11:02:15,709 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 11:02:15,709 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 11:02:15,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-10-17 11:02:15,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-10-17 11:02:15,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 11:02:15,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:02:15,758 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 11:02:15,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-10-17 11:02:15,763 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-10-17 11:02:15,763 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 11:02:16,500 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-10-17 11:02:16,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2022-10-17 11:02:16,508 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 11:02:16,508 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 11:02:16,508 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 11:02:16,508 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 11:02:16,508 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-10-17 11:02:16,508 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 11:02:16,509 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 11:02:16,509 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 11:02:16,509 INFO L133 ssoRankerPreferences]: Filename of dumped script: not-02.c_Iteration2_Loop [2022-10-17 11:02:16,509 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 11:02:16,509 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 11:02:16,510 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 11:02:16,572 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 11:02:16,572 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-10-17 11:02:16,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 11:02:16,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:02:16,574 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 11:02:16,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-10-17 11:02:16,584 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 11:02:16,594 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 11:02:16,595 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 11:02:16,595 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 11:02:16,595 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-10-17 11:02:16,596 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 11:02:16,598 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-10-17 11:02:16,598 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 11:02:16,615 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-10-17 11:02:16,629 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-10-17 11:02:16,629 INFO L444 ModelExtractionUtils]: 3 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-10-17 11:02:16,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 11:02:16,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:02:16,631 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 11:02:16,637 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-10-17 11:02:16,637 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-10-17 11:02:16,637 INFO L513 LassoAnalysis]: Proved termination. [2022-10-17 11:02:16,638 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 [] [2022-10-17 11:02:16,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-10-17 11:02:16,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-10-17 11:02:16,677 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-10-17 11:02:16,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:16,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 11:02:16,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:02:16,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:16,734 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 11:02:16,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:02:16,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:16,790 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-10-17 11:02:16,790 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:16,811 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 14 states and 19 transitions. Complement of second has 5 states. [2022-10-17 11:02:16,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-10-17 11:02:16,813 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) [2022-10-17 11:02:16,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2022-10-17 11:02:16,813 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2022-10-17 11:02:16,814 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 11:02:16,814 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2022-10-17 11:02:16,814 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 11:02:16,814 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 4 letters. [2022-10-17 11:02:16,815 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 11:02:16,815 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2022-10-17 11:02:16,816 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-10-17 11:02:16,817 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 13 states and 18 transitions. [2022-10-17 11:02:16,817 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-10-17 11:02:16,818 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2022-10-17 11:02:16,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 18 transitions. [2022-10-17 11:02:16,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 11:02:16,818 INFO L218 hiAutomatonCegarLoop]: Abstraction has 13 states and 18 transitions. [2022-10-17 11:02:16,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 18 transitions. [2022-10-17 11:02:16,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2022-10-17 11:02:16,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:16,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2022-10-17 11:02:16,822 INFO L240 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2022-10-17 11:02:16,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:02:16,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:02:16,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:02:16,826 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. Second operand has 3 states, 2 states have (on average 3.0) 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) [2022-10-17 11:02:16,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:02:16,847 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2022-10-17 11:02:16,847 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2022-10-17 11:02:16,849 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-10-17 11:02:16,851 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 10 states and 12 transitions. [2022-10-17 11:02:16,851 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-10-17 11:02:16,851 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-10-17 11:02:16,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 12 transitions. [2022-10-17 11:02:16,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 11:02:16,852 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10 states and 12 transitions. [2022-10-17 11:02:16,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 12 transitions. [2022-10-17 11:02:16,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 7. [2022-10-17 11:02:16,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:16,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2022-10-17 11:02:16,858 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 9 transitions. [2022-10-17 11:02:16,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:02:16,860 INFO L428 stractBuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2022-10-17 11:02:16,860 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-10-17 11:02:16,860 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2022-10-17 11:02:16,861 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-10-17 11:02:16,861 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 11:02:16,861 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 11:02:16,861 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-10-17 11:02:16,861 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-10-17 11:02:16,862 INFO L748 eck$LassoCheckResult]: Stem: 158#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 159#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_~a~0#1, main_~x~0#1, main_~y~0#1;havoc main_~a~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;main_~a~0#1 := 1; 164#L21-2 assume !!(0 != main_~x~0#1 && 0 != main_~y~0#1);main_~a~0#1 := main_~x~0#1;main_~x~0#1 := main_~y~0#1; 160#L21 [2022-10-17 11:02:16,862 INFO L750 eck$LassoCheckResult]: Loop: 160#L21 assume main_~a~0#1 >= 0;assume main_~y~0#1 < 0; 161#L21-2 assume !!(0 != main_~x~0#1 && 0 != main_~y~0#1);main_~a~0#1 := main_~x~0#1;main_~x~0#1 := main_~y~0#1; 160#L21 [2022-10-17 11:02:16,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:16,862 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2022-10-17 11:02:16,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:16,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090814257] [2022-10-17 11:02:16,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:16,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:16,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:02:16,869 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 11:02:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:02:16,874 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 11:02:16,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:16,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1406, now seen corresponding path program 1 times [2022-10-17 11:02:16,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:16,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068677150] [2022-10-17 11:02:16,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:16,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:02:16,881 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 11:02:16,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:02:16,892 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 11:02:16,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:16,893 INFO L85 PathProgramCache]: Analyzing trace with hash 28699749, now seen corresponding path program 2 times [2022-10-17 11:02:16,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:16,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322709543] [2022-10-17 11:02:16,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:16,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:16,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:02:16,913 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 11:02:16,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:02:16,918 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 11:02:16,953 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 11:02:16,954 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 11:02:16,954 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 11:02:16,954 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 11:02:16,954 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-10-17 11:02:16,954 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 11:02:16,954 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 11:02:16,954 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 11:02:16,955 INFO L133 ssoRankerPreferences]: Filename of dumped script: not-02.c_Iteration3_Loop [2022-10-17 11:02:16,955 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 11:02:16,955 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 11:02:16,956 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 11:02:17,013 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 11:02:17,014 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-10-17 11:02:17,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 11:02:17,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:02:17,017 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 11:02:17,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-10-17 11:02:17,054 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 11:02:17,055 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 11:02:17,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-10-17 11:02:17,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 11:02:17,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:02:17,121 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 11:02:17,129 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-10-17 11:02:17,130 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 11:02:17,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-10-17 11:02:17,421 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-10-17 11:02:17,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-10-17 11:02:17,425 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 11:02:17,425 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 11:02:17,425 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 11:02:17,425 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 11:02:17,425 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-10-17 11:02:17,425 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 11:02:17,425 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 11:02:17,425 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 11:02:17,425 INFO L133 ssoRankerPreferences]: Filename of dumped script: not-02.c_Iteration3_Loop [2022-10-17 11:02:17,425 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 11:02:17,426 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 11:02:17,426 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 11:02:17,511 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 11:02:17,512 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-10-17 11:02:17,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 11:02:17,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:02:17,517 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 11:02:17,522 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 11:02:17,531 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 11:02:17,531 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 11:02:17,531 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 11:02:17,531 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-10-17 11:02:17,531 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 11:02:17,540 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-10-17 11:02:17,540 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 11:02:17,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-10-17 11:02:17,556 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 11:02:17,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-10-17 11:02:17,591 INFO L490 LassoAnalysis]: Using template '2-nested'. [2022-10-17 11:02:17,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 11:02:17,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:02:17,592 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 11:02:17,598 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 11:02:17,608 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 11:02:17,608 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 11:02:17,608 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 11:02:17,608 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-10-17 11:02:17,608 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-10-17 11:02:17,617 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-10-17 11:02:17,620 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 11:02:17,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-10-17 11:02:17,636 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-10-17 11:02:17,646 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-10-17 11:02:17,646 INFO L444 ModelExtractionUtils]: 3 out of 9 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-10-17 11:02:17,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 11:02:17,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:02:17,652 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 11:02:17,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-10-17 11:02:17,658 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-10-17 11:02:17,660 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-10-17 11:02:17,660 INFO L513 LassoAnalysis]: Proved termination. [2022-10-17 11:02:17,660 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 2*ULTIMATE.start_main_~x~0#1 + 2*ULTIMATE.start_main_~a~0#1 + 1 f1 = 2*ULTIMATE.start_main_~a~0#1 + 1 Supporting invariants [] [2022-10-17 11:02:17,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-10-17 11:02:17,697 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-10-17 11:02:17,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:17,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:17,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 11:02:17,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:02:17,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:17,758 WARN L261 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 11:02:17,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:02:17,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:17,899 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-10-17 11:02:17,900 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:18,004 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 14 states and 18 transitions. Complement of second has 7 states. [2022-10-17 11:02:18,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-10-17 11:02:18,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:18,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2022-10-17 11:02:18,008 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2022-10-17 11:02:18,008 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 11:02:18,008 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2022-10-17 11:02:18,009 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 11:02:18,009 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2022-10-17 11:02:18,009 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 11:02:18,009 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 18 transitions. [2022-10-17 11:02:18,010 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-10-17 11:02:18,010 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 9 states and 11 transitions. [2022-10-17 11:02:18,010 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2022-10-17 11:02:18,010 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2022-10-17 11:02:18,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 11 transitions. [2022-10-17 11:02:18,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-10-17 11:02:18,011 INFO L218 hiAutomatonCegarLoop]: Abstraction has 9 states and 11 transitions. [2022-10-17 11:02:18,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 11 transitions. [2022-10-17 11:02:18,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 7. [2022-10-17 11:02:18,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:18,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2022-10-17 11:02:18,012 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 8 transitions. [2022-10-17 11:02:18,012 INFO L428 stractBuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2022-10-17 11:02:18,012 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-10-17 11:02:18,012 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2022-10-17 11:02:18,013 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-10-17 11:02:18,013 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 11:02:18,013 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 11:02:18,014 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2022-10-17 11:02:18,014 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-10-17 11:02:18,014 INFO L748 eck$LassoCheckResult]: Stem: 221#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 222#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_~a~0#1, main_~x~0#1, main_~y~0#1;havoc main_~a~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;main_~a~0#1 := 1; 227#L21-2 assume !!(0 != main_~x~0#1 && 0 != main_~y~0#1);main_~a~0#1 := main_~x~0#1;main_~x~0#1 := main_~y~0#1; 225#L21 assume !(main_~a~0#1 >= 0);assume main_~y~0#1 >= 0; 226#L21-2 assume !!(0 != main_~x~0#1 && 0 != main_~y~0#1);main_~a~0#1 := main_~x~0#1;main_~x~0#1 := main_~y~0#1; 223#L21 [2022-10-17 11:02:18,014 INFO L750 eck$LassoCheckResult]: Loop: 223#L21 assume main_~a~0#1 >= 0;assume main_~y~0#1 < 0; 224#L21-2 assume !!(0 != main_~x~0#1 && 0 != main_~y~0#1);main_~a~0#1 := main_~x~0#1;main_~x~0#1 := main_~y~0#1; 223#L21 [2022-10-17 11:02:18,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:18,015 INFO L85 PathProgramCache]: Analyzing trace with hash 28699811, now seen corresponding path program 2 times [2022-10-17 11:02:18,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:18,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378253503] [2022-10-17 11:02:18,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:18,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:02:18,023 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 11:02:18,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:02:18,029 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 11:02:18,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:18,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1406, now seen corresponding path program 2 times [2022-10-17 11:02:18,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:18,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259296653] [2022-10-17 11:02:18,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:18,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:02:18,036 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 11:02:18,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:02:18,040 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 11:02:18,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:18,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1810715040, now seen corresponding path program 2 times [2022-10-17 11:02:18,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:02:18,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921298026] [2022-10-17 11:02:18,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:02:18,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:02:18,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:18,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:18,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:02:18,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921298026] [2022-10-17 11:02:18,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921298026] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:02:18,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:02:18,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:02:18,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483769290] [2022-10-17 11:02:18,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:02:18,117 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 11:02:18,117 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 11:02:18,117 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 11:02:18,118 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 11:02:18,118 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-10-17 11:02:18,118 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 11:02:18,118 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 11:02:18,118 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 11:02:18,118 INFO L133 ssoRankerPreferences]: Filename of dumped script: not-02.c_Iteration4_Loop [2022-10-17 11:02:18,119 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 11:02:18,119 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 11:02:18,119 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 11:02:18,205 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 11:02:18,205 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-10-17 11:02:18,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 11:02:18,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:02:18,213 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 11:02:18,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2022-10-17 11:02:18,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-10-17 11:02:18,249 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-10-17 11:02:18,249 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 11:02:18,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-10-17 11:02:18,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-10-17 11:02:18,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 11:02:18,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:02:18,312 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 11:02:18,324 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-10-17 11:02:18,325 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-10-17 11:02:18,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-10-17 11:02:18,566 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-10-17 11:02:18,569 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2022-10-17 11:02:18,569 INFO L210 LassoAnalysis]: Preferences: [2022-10-17 11:02:18,570 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-10-17 11:02:18,570 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-10-17 11:02:18,570 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-10-17 11:02:18,570 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-10-17 11:02:18,570 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 11:02:18,570 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-10-17 11:02:18,570 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-10-17 11:02:18,570 INFO L133 ssoRankerPreferences]: Filename of dumped script: not-02.c_Iteration4_Loop [2022-10-17 11:02:18,570 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-10-17 11:02:18,571 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-10-17 11:02:18,571 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-10-17 11:02:18,654 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-10-17 11:02:18,655 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-10-17 11:02:18,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 11:02:18,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:02:18,657 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 11:02:18,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-10-17 11:02:18,673 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 11:02:18,686 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 11:02:18,686 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 11:02:18,686 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 11:02:18,686 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-10-17 11:02:18,686 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-10-17 11:02:18,690 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-10-17 11:02:18,690 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 11:02:18,699 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-10-17 11:02:18,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-10-17 11:02:18,735 INFO L490 LassoAnalysis]: Using template '2-nested'. [2022-10-17 11:02:18,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 11:02:18,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:02:18,737 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 11:02:18,743 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-10-17 11:02:18,753 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-10-17 11:02:18,753 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-10-17 11:02:18,753 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-10-17 11:02:18,754 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-10-17 11:02:18,754 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-10-17 11:02:18,759 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-10-17 11:02:18,759 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-10-17 11:02:18,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-10-17 11:02:18,776 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-10-17 11:02:18,783 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-10-17 11:02:18,783 INFO L444 ModelExtractionUtils]: 3 out of 9 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-10-17 11:02:18,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 11:02:18,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:02:18,785 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 11:02:18,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-10-17 11:02:18,792 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-10-17 11:02:18,792 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-10-17 11:02:18,792 INFO L513 LassoAnalysis]: Proved termination. [2022-10-17 11:02:18,792 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 2*ULTIMATE.start_main_~x~0#1 - 1*ULTIMATE.start_main_~y~0#1 + 2*ULTIMATE.start_main_~a~0#1 f1 = -1*ULTIMATE.start_main_~y~0#1 + 2*ULTIMATE.start_main_~a~0#1 Supporting invariants [] [2022-10-17 11:02:18,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-10-17 11:02:18,831 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-10-17 11:02:18,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:18,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 11:02:18,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:02:18,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:18,893 WARN L261 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 11:02:18,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:02:18,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:18,983 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-10-17 11:02:18,983 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:18,997 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 10 states and 12 transitions. Complement of second has 5 states. [2022-10-17 11:02:18,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-10-17 11:02:19,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:19,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2022-10-17 11:02:19,000 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 5 letters. Loop has 2 letters. [2022-10-17 11:02:19,001 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 11:02:19,001 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-10-17 11:02:19,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:19,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 11:02:19,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:02:19,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:19,063 WARN L261 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 11:02:19,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:02:19,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:19,167 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2022-10-17 11:02:19,168 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:19,189 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 10 states and 12 transitions. Complement of second has 5 states. [2022-10-17 11:02:19,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-10-17 11:02:19,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:19,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2022-10-17 11:02:19,193 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 5 letters. Loop has 2 letters. [2022-10-17 11:02:19,194 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 11:02:19,194 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-10-17 11:02:19,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:02:19,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:19,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 11:02:19,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:02:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:02:19,241 WARN L261 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 11:02:19,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:02:19,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:02:19,339 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-10-17 11:02:19,340 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:19,430 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 10 states and 12 transitions. Complement of second has 6 states. [2022-10-17 11:02:19,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-10-17 11:02:19,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:19,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2022-10-17 11:02:19,432 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2022-10-17 11:02:19,433 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 11:02:19,433 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2022-10-17 11:02:19,433 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 11:02:19,433 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2022-10-17 11:02:19,434 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-10-17 11:02:19,434 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2022-10-17 11:02:19,434 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-10-17 11:02:19,434 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2022-10-17 11:02:19,434 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-10-17 11:02:19,435 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-10-17 11:02:19,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-10-17 11:02:19,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:02:19,435 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-10-17 11:02:19,435 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-10-17 11:02:19,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:02:19,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:02:19,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:02:19,436 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:02:19,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:02:19,436 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-10-17 11:02:19,436 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2022-10-17 11:02:19,436 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-10-17 11:02:19,436 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2022-10-17 11:02:19,436 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-10-17 11:02:19,437 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-10-17 11:02:19,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-10-17 11:02:19,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:02:19,437 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-10-17 11:02:19,437 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-10-17 11:02:19,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 11:02:19,438 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-10-17 11:02:19,438 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-10-17 11:02:19,438 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-10-17 11:02:19,438 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-10-17 11:02:19,438 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-10-17 11:02:19,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.10 11:02:19 BoogieIcfgContainer [2022-10-17 11:02:19,449 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-10-17 11:02:19,450 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 11:02:19,450 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 11:02:19,450 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 11:02:19,451 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:02:13" (3/4) ... [2022-10-17 11:02:19,459 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-10-17 11:02:19,460 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 11:02:19,461 INFO L158 Benchmark]: Toolchain (without parser) took 6605.64ms. Allocated memory was 117.4MB in the beginning and 153.1MB in the end (delta: 35.7MB). Free memory was 72.6MB in the beginning and 60.0MB in the end (delta: 12.6MB). Peak memory consumption was 47.3MB. Max. memory is 16.1GB. [2022-10-17 11:02:19,462 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 117.4MB. Free memory is still 88.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 11:02:19,468 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.90ms. Allocated memory is still 117.4MB. Free memory was 72.4MB in the beginning and 91.5MB in the end (delta: -19.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-10-17 11:02:19,470 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.03ms. Allocated memory is still 117.4MB. Free memory was 91.5MB in the beginning and 90.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 11:02:19,472 INFO L158 Benchmark]: Boogie Preprocessor took 23.36ms. Allocated memory is still 117.4MB. Free memory was 90.4MB in the beginning and 89.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 11:02:19,472 INFO L158 Benchmark]: RCFGBuilder took 271.06ms. Allocated memory is still 117.4MB. Free memory was 89.3MB in the beginning and 81.0MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 11:02:19,473 INFO L158 Benchmark]: BuchiAutomizer took 5970.50ms. Allocated memory was 117.4MB in the beginning and 153.1MB in the end (delta: 35.7MB). Free memory was 81.0MB in the beginning and 61.0MB in the end (delta: 20.0MB). Peak memory consumption was 57.6MB. Max. memory is 16.1GB. [2022-10-17 11:02:19,474 INFO L158 Benchmark]: Witness Printer took 9.93ms. Allocated memory is still 153.1MB. Free memory was 61.0MB in the beginning and 60.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 11:02:19,476 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 117.4MB. Free memory is still 88.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 284.90ms. Allocated memory is still 117.4MB. Free memory was 72.4MB in the beginning and 91.5MB in the end (delta: -19.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.03ms. Allocated memory is still 117.4MB. Free memory was 91.5MB in the beginning and 90.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.36ms. Allocated memory is still 117.4MB. Free memory was 90.4MB in the beginning and 89.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 271.06ms. Allocated memory is still 117.4MB. Free memory was 89.3MB in the beginning and 81.0MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 5970.50ms. Allocated memory was 117.4MB in the beginning and 153.1MB in the end (delta: 35.7MB). Free memory was 81.0MB in the beginning and 61.0MB in the end (delta: 20.0MB). Peak memory consumption was 57.6MB. Max. memory is 16.1GB. * Witness Printer took 9.93ms. Allocated memory is still 153.1MB. Free memory was 61.0MB in the beginning and 60.0MB in the end (delta: 1.0MB). 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 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * x and consists of 5 locations. One deterministic module has affine ranking function -1 * x and consists of 3 locations. One deterministic module has 2-nested ranking function (if 2 * x + 1 + 2 * a > 0 then 1 else 0), (if 2 * x + 1 + 2 * a > 0 then 2 * x + 1 + 2 * a else 1 + 2 * a) and consists of 4 locations. One nondeterministic module has 2-nested ranking function (if 2 * x + -1 * y + 2 * a > 0 then 1 else 0), (if 2 * x + -1 * y + 2 * a > 0 then 2 * x + -1 * y + 2 * a else -1 * y + 2 * a) and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.9s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 4.4s. Construction of modules took 0.0s. Büchi inclusion checks took 1.2s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 7 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 [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 36 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 30 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 65 IncrementalHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 30 mSDtfsCounter, 65 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq164 hnf93 smp87 dnf135 smp100 tf106 neg93 sie117 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 69ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.5s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-10-17 11:02:19,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-10-17 11:02:19,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cc31927-05ec-49ff-97d0-37f25ae953fd/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE