./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.5.1.ufo.BOUNDED-10.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.5.1.ufo.BOUNDED-10.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y --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 32bit --witnessprinter.graph.data.programhash 2c3b1a53bc376cbb6283db57f6430d0a17b3acc99aa70ab198c7c36e6e59ecc9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:17:17,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:17:17,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:17:17,577 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:17:17,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:17:17,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:17:17,581 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:17:17,587 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:17:17,594 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:17:17,603 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:17:17,605 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:17:17,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:17:17,609 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:17:17,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:17:17,617 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:17:17,619 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:17:17,620 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:17:17,621 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:17:17,624 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:17:17,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:17:17,642 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:17:17,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:17:17,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:17:17,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:17:17,656 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:17:17,657 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:17:17,657 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:17:17,659 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:17:17,659 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:17:17,661 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:17:17,661 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:17:17,662 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:17:17,663 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:17:17,665 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:17:17,666 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:17:17,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:17:17,667 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:17:17,668 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:17:17,668 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:17:17,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:17:17,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:17:17,672 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-11-13 18:17:17,704 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:17:17,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:17:17,705 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:17:17,705 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:17:17,706 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:17:17,706 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:17:17,707 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:17:17,707 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-13 18:17:17,707 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-13 18:17:17,707 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-13 18:17:17,707 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-13 18:17:17,708 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-13 18:17:17,708 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-13 18:17:17,708 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:17:17,708 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:17:17,709 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 18:17:17,709 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:17:17,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:17:17,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:17:17,709 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-13 18:17:17,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-13 18:17:17,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-13 18:17:17,710 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:17:17,710 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:17:17,711 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-13 18:17:17,711 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:17:17,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-13 18:17:17,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:17:17,712 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:17:17,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:17:17,712 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:17:17,712 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:17:17,714 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-13 18:17:17,714 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_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c3b1a53bc376cbb6283db57f6430d0a17b3acc99aa70ab198c7c36e6e59ecc9 [2021-11-13 18:17:18,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:17:18,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:17:18,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:17:18,058 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:17:18,059 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:17:18,061 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/seq-mthreaded/pals_lcr.5.1.ufo.BOUNDED-10.pals.c [2021-11-13 18:17:18,160 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/data/8dd25e24c/fcfb2ecb3c044b53a439c738fa1c4f54/FLAG2702ba69b [2021-11-13 18:17:18,723 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:17:18,724 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/sv-benchmarks/c/seq-mthreaded/pals_lcr.5.1.ufo.BOUNDED-10.pals.c [2021-11-13 18:17:18,738 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/data/8dd25e24c/fcfb2ecb3c044b53a439c738fa1c4f54/FLAG2702ba69b [2021-11-13 18:17:19,075 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/data/8dd25e24c/fcfb2ecb3c044b53a439c738fa1c4f54 [2021-11-13 18:17:19,078 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:17:19,079 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:17:19,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:17:19,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:17:19,101 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:17:19,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:17:19" (1/1) ... [2021-11-13 18:17:19,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12895fd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:17:19, skipping insertion in model container [2021-11-13 18:17:19,103 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:17:19" (1/1) ... [2021-11-13 18:17:19,111 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:17:19,144 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:17:19,438 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/sv-benchmarks/c/seq-mthreaded/pals_lcr.5.1.ufo.BOUNDED-10.pals.c[11270,11283] [2021-11-13 18:17:19,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:17:19,451 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:17:19,556 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/sv-benchmarks/c/seq-mthreaded/pals_lcr.5.1.ufo.BOUNDED-10.pals.c[11270,11283] [2021-11-13 18:17:19,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:17:19,576 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:17:19,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:17:19 WrapperNode [2021-11-13 18:17:19,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:17:19,578 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:17:19,579 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:17:19,579 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:17:19,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:17:19" (1/1) ... [2021-11-13 18:17:19,600 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:17:19" (1/1) ... [2021-11-13 18:17:19,633 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:17:19,634 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:17:19,634 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:17:19,635 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:17:19,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:17:19" (1/1) ... [2021-11-13 18:17:19,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:17:19" (1/1) ... [2021-11-13 18:17:19,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:17:19" (1/1) ... [2021-11-13 18:17:19,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:17:19" (1/1) ... [2021-11-13 18:17:19,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:17:19" (1/1) ... [2021-11-13 18:17:19,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:17:19" (1/1) ... [2021-11-13 18:17:19,693 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:17:19" (1/1) ... [2021-11-13 18:17:19,696 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:17:19,697 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:17:19,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:17:19,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:17:19,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:17:19" (1/1) ... [2021-11-13 18:17:19,720 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:17:19,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:17:19,751 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 18:17:19,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-13 18:17:19,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:17:19,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:17:19,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:17:19,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:17:20,489 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:17:20,489 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-13 18:17:20,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:17:20 BoogieIcfgContainer [2021-11-13 18:17:20,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:17:20,494 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-13 18:17:20,494 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-13 18:17:20,508 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-13 18:17:20,509 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-13 18:17:20,509 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.11 06:17:19" (1/3) ... [2021-11-13 18:17:20,511 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6563f4bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.11 06:17:20, skipping insertion in model container [2021-11-13 18:17:20,511 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-13 18:17:20,511 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:17:19" (2/3) ... [2021-11-13 18:17:20,512 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6563f4bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.11 06:17:20, skipping insertion in model container [2021-11-13 18:17:20,512 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-13 18:17:20,512 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:17:20" (3/3) ... [2021-11-13 18:17:20,514 INFO L388 chiAutomizerObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals.c [2021-11-13 18:17:20,595 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-13 18:17:20,595 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-13 18:17:20,596 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-13 18:17:20,596 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-13 18:17:20,596 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-13 18:17:20,596 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-13 18:17:20,597 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-13 18:17:20,597 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-13 18:17:20,638 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 92 states, 91 states have (on average 1.7142857142857142) internal successors, (156), 91 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:17:20,666 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 51 [2021-11-13 18:17:20,667 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-13 18:17:20,667 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-13 18:17:20,677 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:17:20,678 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:17:20,678 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-13 18:17:20,679 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 92 states, 91 states have (on average 1.7142857142857142) internal successors, (156), 91 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:17:20,689 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 51 [2021-11-13 18:17:20,689 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-13 18:17:20,690 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-13 18:17:20,692 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:17:20,692 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:17:20,701 INFO L791 eck$LassoCheckResult]: Stem: 68#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(35);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~p4~0 := 0;~p4_old~0 := 0;~p4_new~0 := 0;~id4~0 := 0;~st4~0 := 0;~send4~0 := 0;~mode4~0 := 0;~p5~0 := 0;~p5_old~0 := 0;~p5_new~0 := 0;~id5~0 := 0;~st5~0 := 0;~send5~0 := 0;~mode5~0 := 0; 53#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~nondet22#1, main_#t~nondet23#1, main_#t~nondet24#1, main_#t~nondet25#1, main_#t~nondet26#1, main_#t~nondet27#1, main_#t~nondet28#1, main_#t~nondet29#1, main_#t~nondet30#1, main_#t~nondet31#1, main_#t~nondet32#1, main_#t~ret33#1, main_#t~ret34#1, main_#t~post35#1, main_~c1~0#1, main_~i2~0#1;havoc main_~c1~0#1;havoc main_~i2~0#1;main_~c1~0#1 := 0;~r1~0 := main_#t~nondet12#1;havoc main_#t~nondet12#1;~id1~0 := main_#t~nondet13#1;havoc main_#t~nondet13#1;~st1~0 := main_#t~nondet14#1;havoc main_#t~nondet14#1;~send1~0 := main_#t~nondet15#1;havoc main_#t~nondet15#1;~mode1~0 := main_#t~nondet16#1;havoc main_#t~nondet16#1;~id2~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;~st2~0 := main_#t~nondet18#1;havoc main_#t~nondet18#1;~send2~0 := main_#t~nondet19#1;havoc main_#t~nondet19#1;~mode2~0 := main_#t~nondet20#1;havoc main_#t~nondet20#1;~id3~0 := main_#t~nondet21#1;havoc main_#t~nondet21#1;~st3~0 := main_#t~nondet22#1;havoc main_#t~nondet22#1;~send3~0 := main_#t~nondet23#1;havoc main_#t~nondet23#1;~mode3~0 := main_#t~nondet24#1;havoc main_#t~nondet24#1;~id4~0 := main_#t~nondet25#1;havoc main_#t~nondet25#1;~st4~0 := main_#t~nondet26#1;havoc main_#t~nondet26#1;~send4~0 := main_#t~nondet27#1;havoc main_#t~nondet27#1;~mode4~0 := main_#t~nondet28#1;havoc main_#t~nondet28#1;~id5~0 := main_#t~nondet29#1;havoc main_#t~nondet29#1;~st5~0 := main_#t~nondet30#1;havoc main_#t~nondet30#1;~send5~0 := main_#t~nondet31#1;havoc main_#t~nondet31#1;~mode5~0 := main_#t~nondet32#1;havoc main_#t~nondet32#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1; 7#L198true assume !(0 == ~r1~0);init_~tmp~0#1 := 0; 32#L198-1true init_#res#1 := init_~tmp~0#1; 5#L323true main_#t~ret33#1 := init_#res#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret33#1;havoc main_#t~ret33#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := main_~i2~0#1;havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; 58#L22true assume !(0 == assume_abort_if_not_~cond#1); 40#L21true assume { :end_inline_assume_abort_if_not } true;~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~nomsg~0;~p4_new~0 := ~nomsg~0;~p5_old~0 := ~nomsg~0;~p5_new~0 := ~nomsg~0;main_~i2~0#1 := 0; 18#L395-2true [2021-11-13 18:17:20,705 INFO L793 eck$LassoCheckResult]: Loop: 18#L395-2true assume !!(main_~i2~0#1 < 10);assume { :begin_inline_node1 } true;havoc node1_#t~ite7#1, node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0; 9#L71true assume 0 != ~mode1~0 % 256;~r1~0 := (if (1 + ~r1~0) % 256 <= 127 then (1 + ~r1~0) % 256 else (1 + ~r1~0) % 256 - 256);node1_~m1~0#1 := ~p5_old~0;~p5_old~0 := ~nomsg~0; 85#L75true assume !(node1_~m1~0#1 != ~nomsg~0); 38#L75-1true ~mode1~0 := 0; 82#L71-2true assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite8#1, node2_~m2~0#1;havoc node2_~m2~0#1;node2_~m2~0#1 := ~nomsg~0; 56#L99true assume !(0 != ~mode2~0 % 256); 69#L112true assume ~send2~0 != ~nomsg~0 && ~p2_new~0 == ~nomsg~0;node2_#t~ite8#1 := ~send2~0; 79#L112-2true ~p2_new~0 := (if node2_#t~ite8#1 % 256 <= 127 then node2_#t~ite8#1 % 256 else node2_#t~ite8#1 % 256 - 256);havoc node2_#t~ite8#1;~mode2~0 := 1; 61#L99-2true assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite9#1, node3_~m3~0#1;havoc node3_~m3~0#1;node3_~m3~0#1 := ~nomsg~0; 20#L124true assume 0 != ~mode3~0 % 256;node3_~m3~0#1 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 74#L127true assume !(node3_~m3~0#1 != ~nomsg~0); 27#L127-1true ~mode3~0 := 0; 87#L124-2true assume { :end_inline_node3 } true;assume { :begin_inline_node4 } true;havoc node4_#t~ite10#1, node4_~m4~0#1;havoc node4_~m4~0#1;node4_~m4~0#1 := ~nomsg~0; 33#L149true assume 0 != ~mode4~0 % 256;node4_~m4~0#1 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 42#L152true assume !(node4_~m4~0#1 != ~nomsg~0); 14#L152-1true ~mode4~0 := 0; 67#L149-2true assume { :end_inline_node4 } true;assume { :begin_inline_node5 } true;havoc node5_#t~ite11#1, node5_~m5~0#1;havoc node5_~m5~0#1;node5_~m5~0#1 := ~nomsg~0; 84#L174true assume 0 != ~mode5~0 % 256;node5_~m5~0#1 := ~p4_old~0;~p4_old~0 := ~nomsg~0; 72#L177true assume !(node5_~m5~0#1 != ~nomsg~0); 81#L177-1true ~mode5~0 := 0; 60#L174-2true assume { :end_inline_node5 } true;~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~p4_new~0;~p4_new~0 := ~nomsg~0;~p5_old~0 := ~p5_new~0;~p5_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; 15#L331true assume !(~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 + ~st5~0 <= 1);check_~tmp~1#1 := 0; 37#L331-1true check_#res#1 := check_~tmp~1#1; 4#L351true main_#t~ret34#1 := check_#res#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret34#1;havoc main_#t~ret34#1;assume { :begin_inline_assert } true;assert_#in~arg#1 := (if 0 == main_~c1~0#1 then 0 else 1);havoc assert_~arg#1;assert_~arg#1 := assert_#in~arg#1; 51#L425true assume !(0 == assert_~arg#1 % 256); 48#L420true assume { :end_inline_assert } true;main_#t~post35#1 := main_~i2~0#1;main_~i2~0#1 := 1 + main_#t~post35#1;havoc main_#t~post35#1; 18#L395-2true [2021-11-13 18:17:20,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:17:20,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1978587388, now seen corresponding path program 1 times [2021-11-13 18:17:20,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:17:20,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685536891] [2021-11-13 18:17:20,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:17:20,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:17:20,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:17:21,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:17:21,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:17:21,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685536891] [2021-11-13 18:17:21,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685536891] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:17:21,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:17:21,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:17:21,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771651708] [2021-11-13 18:17:21,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:17:21,114 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-13 18:17:21,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:17:21,118 INFO L85 PathProgramCache]: Analyzing trace with hash 225661616, now seen corresponding path program 1 times [2021-11-13 18:17:21,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:17:21,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987227902] [2021-11-13 18:17:21,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:17:21,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:17:21,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:17:21,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:17:21,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:17:21,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987227902] [2021-11-13 18:17:21,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987227902] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:17:21,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:17:21,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:17:21,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787481978] [2021-11-13 18:17:21,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:17:21,432 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-13 18:17:21,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:17:21,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:17:21,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:17:21,472 INFO L87 Difference]: Start difference. First operand has 92 states, 91 states have (on average 1.7142857142857142) internal successors, (156), 91 states have internal predecessors, (156), 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 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:17:21,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:17:21,599 INFO L93 Difference]: Finished difference Result 95 states and 155 transitions. [2021-11-13 18:17:21,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:17:21,606 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 95 states and 155 transitions. [2021-11-13 18:17:21,613 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 50 [2021-11-13 18:17:21,620 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 95 states to 87 states and 117 transitions. [2021-11-13 18:17:21,621 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 87 [2021-11-13 18:17:21,623 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 87 [2021-11-13 18:17:21,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 117 transitions. [2021-11-13 18:17:21,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:17:21,625 INFO L681 BuchiCegarLoop]: Abstraction has 87 states and 117 transitions. [2021-11-13 18:17:21,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states and 117 transitions. [2021-11-13 18:17:21,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2021-11-13 18:17:21,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 87 states have (on average 1.3448275862068966) internal successors, (117), 86 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:17:21,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 117 transitions. [2021-11-13 18:17:21,694 INFO L704 BuchiCegarLoop]: Abstraction has 87 states and 117 transitions. [2021-11-13 18:17:21,695 INFO L587 BuchiCegarLoop]: Abstraction has 87 states and 117 transitions. [2021-11-13 18:17:21,695 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-13 18:17:21,695 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 87 states and 117 transitions. [2021-11-13 18:17:21,706 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 50 [2021-11-13 18:17:21,707 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-13 18:17:21,707 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-13 18:17:21,709 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:17:21,710 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:17:21,711 INFO L791 eck$LassoCheckResult]: Stem: 282#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(35);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~p4~0 := 0;~p4_old~0 := 0;~p4_new~0 := 0;~id4~0 := 0;~st4~0 := 0;~send4~0 := 0;~mode4~0 := 0;~p5~0 := 0;~p5_old~0 := 0;~p5_new~0 := 0;~id5~0 := 0;~st5~0 := 0;~send5~0 := 0;~mode5~0 := 0; 272#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~nondet22#1, main_#t~nondet23#1, main_#t~nondet24#1, main_#t~nondet25#1, main_#t~nondet26#1, main_#t~nondet27#1, main_#t~nondet28#1, main_#t~nondet29#1, main_#t~nondet30#1, main_#t~nondet31#1, main_#t~nondet32#1, main_#t~ret33#1, main_#t~ret34#1, main_#t~post35#1, main_~c1~0#1, main_~i2~0#1;havoc main_~c1~0#1;havoc main_~i2~0#1;main_~c1~0#1 := 0;~r1~0 := main_#t~nondet12#1;havoc main_#t~nondet12#1;~id1~0 := main_#t~nondet13#1;havoc main_#t~nondet13#1;~st1~0 := main_#t~nondet14#1;havoc main_#t~nondet14#1;~send1~0 := main_#t~nondet15#1;havoc main_#t~nondet15#1;~mode1~0 := main_#t~nondet16#1;havoc main_#t~nondet16#1;~id2~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;~st2~0 := main_#t~nondet18#1;havoc main_#t~nondet18#1;~send2~0 := main_#t~nondet19#1;havoc main_#t~nondet19#1;~mode2~0 := main_#t~nondet20#1;havoc main_#t~nondet20#1;~id3~0 := main_#t~nondet21#1;havoc main_#t~nondet21#1;~st3~0 := main_#t~nondet22#1;havoc main_#t~nondet22#1;~send3~0 := main_#t~nondet23#1;havoc main_#t~nondet23#1;~mode3~0 := main_#t~nondet24#1;havoc main_#t~nondet24#1;~id4~0 := main_#t~nondet25#1;havoc main_#t~nondet25#1;~st4~0 := main_#t~nondet26#1;havoc main_#t~nondet26#1;~send4~0 := main_#t~nondet27#1;havoc main_#t~nondet27#1;~mode4~0 := main_#t~nondet28#1;havoc main_#t~nondet28#1;~id5~0 := main_#t~nondet29#1;havoc main_#t~nondet29#1;~st5~0 := main_#t~nondet30#1;havoc main_#t~nondet30#1;~send5~0 := main_#t~nondet31#1;havoc main_#t~nondet31#1;~mode5~0 := main_#t~nondet32#1;havoc main_#t~nondet32#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1; 211#L198 assume 0 == ~r1~0; 212#L199 assume ~id1~0 >= 0; 267#L200 assume 0 == ~st1~0; 268#L201 assume ~send1~0 == ~id1~0; 246#L202 assume 0 == ~mode1~0 % 256; 247#L203 assume ~id2~0 >= 0; 262#L204 assume 0 == ~st2~0; 223#L205 assume ~send2~0 == ~id2~0; 224#L206 assume 0 == ~mode2~0 % 256; 213#L207 assume ~id3~0 >= 0; 214#L208 assume 0 == ~st3~0; 271#L209 assume ~send3~0 == ~id3~0; 225#L210 assume 0 == ~mode3~0 % 256; 226#L211 assume ~id4~0 >= 0; 215#L212 assume 0 == ~st4~0; 216#L213 assume ~send4~0 == ~id4~0; 288#L214 assume 0 == ~mode4~0 % 256; 289#L215 assume ~id5~0 >= 0; 270#L216 assume 0 == ~st5~0; 252#L217 assume ~send5~0 == ~id5~0; 253#L218 assume 0 == ~mode5~0 % 256; 273#L219 assume ~id1~0 != ~id2~0; 291#L220 assume ~id1~0 != ~id3~0; 245#L221 assume ~id1~0 != ~id4~0; 243#L222 assume ~id1~0 != ~id5~0; 244#L223 assume ~id2~0 != ~id3~0; 236#L224 assume ~id2~0 != ~id4~0; 237#L225 assume ~id2~0 != ~id5~0; 231#L226 assume ~id3~0 != ~id4~0; 232#L227 assume ~id3~0 != ~id5~0; 248#L228 assume ~id4~0 != ~id5~0;init_~tmp~0#1 := 1; 249#L198-1 init_#res#1 := init_~tmp~0#1; 207#L323 main_#t~ret33#1 := init_#res#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret33#1;havoc main_#t~ret33#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := main_~i2~0#1;havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; 208#L22 assume !(0 == assume_abort_if_not_~cond#1); 264#L21 assume { :end_inline_assume_abort_if_not } true;~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~nomsg~0;~p4_new~0 := ~nomsg~0;~p5_old~0 := ~nomsg~0;~p5_new~0 := ~nomsg~0;main_~i2~0#1 := 0; 235#L395-2 [2021-11-13 18:17:21,711 INFO L793 eck$LassoCheckResult]: Loop: 235#L395-2 assume !!(main_~i2~0#1 < 10);assume { :begin_inline_node1 } true;havoc node1_#t~ite7#1, node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0; 217#L71 assume 0 != ~mode1~0 % 256;~r1~0 := (if (1 + ~r1~0) % 256 <= 127 then (1 + ~r1~0) % 256 else (1 + ~r1~0) % 256 - 256);node1_~m1~0#1 := ~p5_old~0;~p5_old~0 := ~nomsg~0; 218#L75 assume !(node1_~m1~0#1 != ~nomsg~0); 263#L75-1 ~mode1~0 := 0; 210#L71-2 assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite8#1, node2_~m2~0#1;havoc node2_~m2~0#1;node2_~m2~0#1 := ~nomsg~0; 274#L99 assume 0 != ~mode2~0 % 256;node2_~m2~0#1 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 275#L102 assume !(node2_~m2~0#1 != ~nomsg~0); 254#L102-1 ~mode2~0 := 0; 255#L99-2 assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite9#1, node3_~m3~0#1;havoc node3_~m3~0#1;node3_~m3~0#1 := ~nomsg~0; 238#L124 assume !(0 != ~mode3~0 % 256); 240#L137 assume ~send3~0 != ~nomsg~0 && ~p3_new~0 == ~nomsg~0;node3_#t~ite9#1 := ~send3~0; 279#L137-2 ~p3_new~0 := (if node3_#t~ite9#1 % 256 <= 127 then node3_#t~ite9#1 % 256 else node3_#t~ite9#1 % 256 - 256);havoc node3_#t~ite9#1;~mode3~0 := 1; 251#L124-2 assume { :end_inline_node3 } true;assume { :begin_inline_node4 } true;havoc node4_#t~ite10#1, node4_~m4~0#1;havoc node4_~m4~0#1;node4_~m4~0#1 := ~nomsg~0; 257#L149 assume 0 != ~mode4~0 % 256;node4_~m4~0#1 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 258#L152 assume !(node4_~m4~0#1 != ~nomsg~0); 221#L152-1 ~mode4~0 := 0; 227#L149-2 assume { :end_inline_node4 } true;assume { :begin_inline_node5 } true;havoc node5_#t~ite11#1, node5_~m5~0#1;havoc node5_~m5~0#1;node5_~m5~0#1 := ~nomsg~0; 281#L174 assume 0 != ~mode5~0 % 256;node5_~m5~0#1 := ~p4_old~0;~p4_old~0 := ~nomsg~0; 285#L177 assume !(node5_~m5~0#1 != ~nomsg~0); 261#L177-1 ~mode5~0 := 0; 242#L174-2 assume { :end_inline_node5 } true;~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~p4_new~0;~p4_new~0 := ~nomsg~0;~p5_old~0 := ~p5_new~0;~p5_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; 228#L331 assume !(~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 + ~st5~0 <= 1);check_~tmp~1#1 := 0; 229#L331-1 check_#res#1 := check_~tmp~1#1; 205#L351 main_#t~ret34#1 := check_#res#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret34#1;havoc main_#t~ret34#1;assume { :begin_inline_assert } true;assert_#in~arg#1 := (if 0 == main_~c1~0#1 then 0 else 1);havoc assert_~arg#1;assert_~arg#1 := assert_#in~arg#1; 206#L425 assume !(0 == assert_~arg#1 % 256); 269#L420 assume { :end_inline_assert } true;main_#t~post35#1 := main_~i2~0#1;main_~i2~0#1 := 1 + main_#t~post35#1;havoc main_#t~post35#1; 235#L395-2 [2021-11-13 18:17:21,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:17:21,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1992034189, now seen corresponding path program 1 times [2021-11-13 18:17:21,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:17:21,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831678823] [2021-11-13 18:17:21,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:17:21,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:17:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:17:21,785 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:17:21,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:17:21,889 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:17:21,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:17:21,891 INFO L85 PathProgramCache]: Analyzing trace with hash 571407792, now seen corresponding path program 1 times [2021-11-13 18:17:21,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:17:21,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459865652] [2021-11-13 18:17:21,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:17:21,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:17:21,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:17:22,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:17:22,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:17:22,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459865652] [2021-11-13 18:17:22,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459865652] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:17:22,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:17:22,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:17:22,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92482821] [2021-11-13 18:17:22,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:17:22,046 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-13 18:17:22,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:17:22,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:17:22,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:17:22,047 INFO L87 Difference]: Start difference. First operand 87 states and 117 transitions. cyclomatic complexity: 31 Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:17:22,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:17:22,135 INFO L93 Difference]: Finished difference Result 90 states and 119 transitions. [2021-11-13 18:17:22,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:17:22,137 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 90 states and 119 transitions. [2021-11-13 18:17:22,141 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 50 [2021-11-13 18:17:22,143 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 90 states to 87 states and 114 transitions. [2021-11-13 18:17:22,143 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 87 [2021-11-13 18:17:22,144 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 87 [2021-11-13 18:17:22,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 114 transitions. [2021-11-13 18:17:22,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:17:22,146 INFO L681 BuchiCegarLoop]: Abstraction has 87 states and 114 transitions. [2021-11-13 18:17:22,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states and 114 transitions. [2021-11-13 18:17:22,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2021-11-13 18:17:22,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 87 states have (on average 1.3103448275862069) internal successors, (114), 86 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:17:22,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 114 transitions. [2021-11-13 18:17:22,155 INFO L704 BuchiCegarLoop]: Abstraction has 87 states and 114 transitions. [2021-11-13 18:17:22,155 INFO L587 BuchiCegarLoop]: Abstraction has 87 states and 114 transitions. [2021-11-13 18:17:22,155 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-13 18:17:22,155 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 87 states and 114 transitions. [2021-11-13 18:17:22,158 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 50 [2021-11-13 18:17:22,158 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-13 18:17:22,158 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-13 18:17:22,160 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:17:22,161 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:17:22,161 INFO L791 eck$LassoCheckResult]: Stem: 471#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(35);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~p4~0 := 0;~p4_old~0 := 0;~p4_new~0 := 0;~id4~0 := 0;~st4~0 := 0;~send4~0 := 0;~mode4~0 := 0;~p5~0 := 0;~p5_old~0 := 0;~p5_new~0 := 0;~id5~0 := 0;~st5~0 := 0;~send5~0 := 0;~mode5~0 := 0; 461#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~nondet22#1, main_#t~nondet23#1, main_#t~nondet24#1, main_#t~nondet25#1, main_#t~nondet26#1, main_#t~nondet27#1, main_#t~nondet28#1, main_#t~nondet29#1, main_#t~nondet30#1, main_#t~nondet31#1, main_#t~nondet32#1, main_#t~ret33#1, main_#t~ret34#1, main_#t~post35#1, main_~c1~0#1, main_~i2~0#1;havoc main_~c1~0#1;havoc main_~i2~0#1;main_~c1~0#1 := 0;~r1~0 := main_#t~nondet12#1;havoc main_#t~nondet12#1;~id1~0 := main_#t~nondet13#1;havoc main_#t~nondet13#1;~st1~0 := main_#t~nondet14#1;havoc main_#t~nondet14#1;~send1~0 := main_#t~nondet15#1;havoc main_#t~nondet15#1;~mode1~0 := main_#t~nondet16#1;havoc main_#t~nondet16#1;~id2~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;~st2~0 := main_#t~nondet18#1;havoc main_#t~nondet18#1;~send2~0 := main_#t~nondet19#1;havoc main_#t~nondet19#1;~mode2~0 := main_#t~nondet20#1;havoc main_#t~nondet20#1;~id3~0 := main_#t~nondet21#1;havoc main_#t~nondet21#1;~st3~0 := main_#t~nondet22#1;havoc main_#t~nondet22#1;~send3~0 := main_#t~nondet23#1;havoc main_#t~nondet23#1;~mode3~0 := main_#t~nondet24#1;havoc main_#t~nondet24#1;~id4~0 := main_#t~nondet25#1;havoc main_#t~nondet25#1;~st4~0 := main_#t~nondet26#1;havoc main_#t~nondet26#1;~send4~0 := main_#t~nondet27#1;havoc main_#t~nondet27#1;~mode4~0 := main_#t~nondet28#1;havoc main_#t~nondet28#1;~id5~0 := main_#t~nondet29#1;havoc main_#t~nondet29#1;~st5~0 := main_#t~nondet30#1;havoc main_#t~nondet30#1;~send5~0 := main_#t~nondet31#1;havoc main_#t~nondet31#1;~mode5~0 := main_#t~nondet32#1;havoc main_#t~nondet32#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1; 400#L198 assume 0 == ~r1~0; 401#L199 assume ~id1~0 >= 0; 456#L200 assume 0 == ~st1~0; 457#L201 assume ~send1~0 == ~id1~0; 435#L202 assume 0 == ~mode1~0 % 256; 436#L203 assume ~id2~0 >= 0; 449#L204 assume 0 == ~st2~0; 409#L205 assume ~send2~0 == ~id2~0; 410#L206 assume 0 == ~mode2~0 % 256; 402#L207 assume ~id3~0 >= 0; 403#L208 assume 0 == ~st3~0; 460#L209 assume ~send3~0 == ~id3~0; 414#L210 assume 0 == ~mode3~0 % 256; 415#L211 assume ~id4~0 >= 0; 404#L212 assume 0 == ~st4~0; 405#L213 assume ~send4~0 == ~id4~0; 477#L214 assume 0 == ~mode4~0 % 256; 478#L215 assume ~id5~0 >= 0; 459#L216 assume 0 == ~st5~0; 441#L217 assume ~send5~0 == ~id5~0; 442#L218 assume 0 == ~mode5~0 % 256; 462#L219 assume ~id1~0 != ~id2~0; 480#L220 assume ~id1~0 != ~id3~0; 434#L221 assume ~id1~0 != ~id4~0; 432#L222 assume ~id1~0 != ~id5~0; 433#L223 assume ~id2~0 != ~id3~0; 425#L224 assume ~id2~0 != ~id4~0; 426#L225 assume ~id2~0 != ~id5~0; 419#L226 assume ~id3~0 != ~id4~0; 420#L227 assume ~id3~0 != ~id5~0; 437#L228 assume ~id4~0 != ~id5~0;init_~tmp~0#1 := 1; 438#L198-1 init_#res#1 := init_~tmp~0#1; 396#L323 main_#t~ret33#1 := init_#res#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret33#1;havoc main_#t~ret33#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := main_~i2~0#1;havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; 397#L22 assume !(0 == assume_abort_if_not_~cond#1); 453#L21 assume { :end_inline_assume_abort_if_not } true;~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~nomsg~0;~p4_new~0 := ~nomsg~0;~p5_old~0 := ~nomsg~0;~p5_new~0 := ~nomsg~0;main_~i2~0#1 := 0; 424#L395-2 [2021-11-13 18:17:22,162 INFO L793 eck$LassoCheckResult]: Loop: 424#L395-2 assume !!(main_~i2~0#1 < 10);assume { :begin_inline_node1 } true;havoc node1_#t~ite7#1, node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0; 406#L71 assume 0 != ~mode1~0 % 256;~r1~0 := (if (1 + ~r1~0) % 256 <= 127 then (1 + ~r1~0) % 256 else (1 + ~r1~0) % 256 - 256);node1_~m1~0#1 := ~p5_old~0;~p5_old~0 := ~nomsg~0; 407#L75 assume !(node1_~m1~0#1 != ~nomsg~0); 452#L75-1 ~mode1~0 := 0; 399#L71-2 assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite8#1, node2_~m2~0#1;havoc node2_~m2~0#1;node2_~m2~0#1 := ~nomsg~0; 463#L99 assume 0 != ~mode2~0 % 256;node2_~m2~0#1 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 464#L102 assume !(node2_~m2~0#1 != ~nomsg~0); 443#L102-1 ~mode2~0 := 0; 444#L99-2 assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite9#1, node3_~m3~0#1;havoc node3_~m3~0#1;node3_~m3~0#1 := ~nomsg~0; 427#L124 assume 0 != ~mode3~0 % 256;node3_~m3~0#1 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 428#L127 assume !(node3_~m3~0#1 != ~nomsg~0); 439#L127-1 ~mode3~0 := 0; 440#L124-2 assume { :end_inline_node3 } true;assume { :begin_inline_node4 } true;havoc node4_#t~ite10#1, node4_~m4~0#1;havoc node4_~m4~0#1;node4_~m4~0#1 := ~nomsg~0; 446#L149 assume !(0 != ~mode4~0 % 256); 448#L162 assume ~send4~0 != ~nomsg~0 && ~p4_new~0 == ~nomsg~0;node4_#t~ite10#1 := ~send4~0; 455#L162-2 ~p4_new~0 := (if node4_#t~ite10#1 % 256 <= 127 then node4_#t~ite10#1 % 256 else node4_#t~ite10#1 % 256 - 256);havoc node4_#t~ite10#1;~mode4~0 := 1; 416#L149-2 assume { :end_inline_node4 } true;assume { :begin_inline_node5 } true;havoc node5_#t~ite11#1, node5_~m5~0#1;havoc node5_~m5~0#1;node5_~m5~0#1 := ~nomsg~0; 470#L174 assume 0 != ~mode5~0 % 256;node5_~m5~0#1 := ~p4_old~0;~p4_old~0 := ~nomsg~0; 474#L177 assume !(node5_~m5~0#1 != ~nomsg~0); 451#L177-1 ~mode5~0 := 0; 431#L174-2 assume { :end_inline_node5 } true;~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~p4_new~0;~p4_new~0 := ~nomsg~0;~p5_old~0 := ~p5_new~0;~p5_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; 417#L331 assume ~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 + ~st5~0 <= 1; 418#L332 assume ~r1~0 >= 5; 421#L336 assume ~r1~0 < 5;check_~tmp~1#1 := 1; 422#L331-1 check_#res#1 := check_~tmp~1#1; 394#L351 main_#t~ret34#1 := check_#res#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret34#1;havoc main_#t~ret34#1;assume { :begin_inline_assert } true;assert_#in~arg#1 := (if 0 == main_~c1~0#1 then 0 else 1);havoc assert_~arg#1;assert_~arg#1 := assert_#in~arg#1; 395#L425 assume !(0 == assert_~arg#1 % 256); 458#L420 assume { :end_inline_assert } true;main_#t~post35#1 := main_~i2~0#1;main_~i2~0#1 := 1 + main_#t~post35#1;havoc main_#t~post35#1; 424#L395-2 [2021-11-13 18:17:22,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:17:22,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1992034189, now seen corresponding path program 2 times [2021-11-13 18:17:22,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:17:22,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544513768] [2021-11-13 18:17:22,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:17:22,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:17:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:17:22,196 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:17:22,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:17:22,244 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:17:22,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:17:22,246 INFO L85 PathProgramCache]: Analyzing trace with hash -747827424, now seen corresponding path program 1 times [2021-11-13 18:17:22,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:17:22,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991992918] [2021-11-13 18:17:22,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:17:22,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:17:22,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:17:22,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:17:22,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:17:22,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991992918] [2021-11-13 18:17:22,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991992918] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:17:22,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:17:22,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:17:22,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490482840] [2021-11-13 18:17:22,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:17:22,323 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-13 18:17:22,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:17:22,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:17:22,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:17:22,326 INFO L87 Difference]: Start difference. First operand 87 states and 114 transitions. cyclomatic complexity: 28 Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:17:22,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:17:22,388 INFO L93 Difference]: Finished difference Result 131 states and 180 transitions. [2021-11-13 18:17:22,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:17:22,394 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 131 states and 180 transitions. [2021-11-13 18:17:22,397 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 94 [2021-11-13 18:17:22,403 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 131 states to 131 states and 180 transitions. [2021-11-13 18:17:22,407 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 131 [2021-11-13 18:17:22,408 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 131 [2021-11-13 18:17:22,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 131 states and 180 transitions. [2021-11-13 18:17:22,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:17:22,410 INFO L681 BuchiCegarLoop]: Abstraction has 131 states and 180 transitions. [2021-11-13 18:17:22,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states and 180 transitions. [2021-11-13 18:17:22,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-11-13 18:17:22,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 131 states have (on average 1.3740458015267176) internal successors, (180), 130 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:17:22,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 180 transitions. [2021-11-13 18:17:22,435 INFO L704 BuchiCegarLoop]: Abstraction has 131 states and 180 transitions. [2021-11-13 18:17:22,436 INFO L587 BuchiCegarLoop]: Abstraction has 131 states and 180 transitions. [2021-11-13 18:17:22,436 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-13 18:17:22,436 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 131 states and 180 transitions. [2021-11-13 18:17:22,448 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 94 [2021-11-13 18:17:22,448 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-13 18:17:22,448 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-13 18:17:22,450 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:17:22,450 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:17:22,451 INFO L791 eck$LassoCheckResult]: Stem: 700#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(35);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0;~p4~0 := 0;~p4_old~0 := 0;~p4_new~0 := 0;~id4~0 := 0;~st4~0 := 0;~send4~0 := 0;~mode4~0 := 0;~p5~0 := 0;~p5_old~0 := 0;~p5_new~0 := 0;~id5~0 := 0;~st5~0 := 0;~send5~0 := 0;~mode5~0 := 0; 689#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~nondet22#1, main_#t~nondet23#1, main_#t~nondet24#1, main_#t~nondet25#1, main_#t~nondet26#1, main_#t~nondet27#1, main_#t~nondet28#1, main_#t~nondet29#1, main_#t~nondet30#1, main_#t~nondet31#1, main_#t~nondet32#1, main_#t~ret33#1, main_#t~ret34#1, main_#t~post35#1, main_~c1~0#1, main_~i2~0#1;havoc main_~c1~0#1;havoc main_~i2~0#1;main_~c1~0#1 := 0;~r1~0 := main_#t~nondet12#1;havoc main_#t~nondet12#1;~id1~0 := main_#t~nondet13#1;havoc main_#t~nondet13#1;~st1~0 := main_#t~nondet14#1;havoc main_#t~nondet14#1;~send1~0 := main_#t~nondet15#1;havoc main_#t~nondet15#1;~mode1~0 := main_#t~nondet16#1;havoc main_#t~nondet16#1;~id2~0 := main_#t~nondet17#1;havoc main_#t~nondet17#1;~st2~0 := main_#t~nondet18#1;havoc main_#t~nondet18#1;~send2~0 := main_#t~nondet19#1;havoc main_#t~nondet19#1;~mode2~0 := main_#t~nondet20#1;havoc main_#t~nondet20#1;~id3~0 := main_#t~nondet21#1;havoc main_#t~nondet21#1;~st3~0 := main_#t~nondet22#1;havoc main_#t~nondet22#1;~send3~0 := main_#t~nondet23#1;havoc main_#t~nondet23#1;~mode3~0 := main_#t~nondet24#1;havoc main_#t~nondet24#1;~id4~0 := main_#t~nondet25#1;havoc main_#t~nondet25#1;~st4~0 := main_#t~nondet26#1;havoc main_#t~nondet26#1;~send4~0 := main_#t~nondet27#1;havoc main_#t~nondet27#1;~mode4~0 := main_#t~nondet28#1;havoc main_#t~nondet28#1;~id5~0 := main_#t~nondet29#1;havoc main_#t~nondet29#1;~st5~0 := main_#t~nondet30#1;havoc main_#t~nondet30#1;~send5~0 := main_#t~nondet31#1;havoc main_#t~nondet31#1;~mode5~0 := main_#t~nondet32#1;havoc main_#t~nondet32#1;assume { :begin_inline_init } true;havoc init_#res#1;havoc init_~tmp~0#1;havoc init_~tmp~0#1; 624#L198 assume 0 == ~r1~0; 625#L199 assume ~id1~0 >= 0; 684#L200 assume 0 == ~st1~0; 685#L201 assume ~send1~0 == ~id1~0; 658#L202 assume 0 == ~mode1~0 % 256; 659#L203 assume ~id2~0 >= 0; 676#L204 assume 0 == ~st2~0; 636#L205 assume ~send2~0 == ~id2~0; 637#L206 assume 0 == ~mode2~0 % 256; 626#L207 assume ~id3~0 >= 0; 627#L208 assume 0 == ~st3~0; 688#L209 assume ~send3~0 == ~id3~0; 638#L210 assume 0 == ~mode3~0 % 256; 639#L211 assume ~id4~0 >= 0; 631#L212 assume 0 == ~st4~0; 632#L213 assume ~send4~0 == ~id4~0; 707#L214 assume 0 == ~mode4~0 % 256; 708#L215 assume ~id5~0 >= 0; 687#L216 assume 0 == ~st5~0; 666#L217 assume ~send5~0 == ~id5~0; 667#L218 assume 0 == ~mode5~0 % 256; 690#L219 assume ~id1~0 != ~id2~0; 712#L220 assume ~id1~0 != ~id3~0; 657#L221 assume ~id1~0 != ~id4~0; 655#L222 assume ~id1~0 != ~id5~0; 656#L223 assume ~id2~0 != ~id3~0; 648#L224 assume ~id2~0 != ~id4~0; 649#L225 assume ~id2~0 != ~id5~0; 643#L226 assume ~id3~0 != ~id4~0; 644#L227 assume ~id3~0 != ~id5~0; 660#L228 assume ~id4~0 != ~id5~0;init_~tmp~0#1 := 1; 661#L198-1 init_#res#1 := init_~tmp~0#1; 620#L323 main_#t~ret33#1 := init_#res#1;assume { :end_inline_init } true;main_~i2~0#1 := main_#t~ret33#1;havoc main_#t~ret33#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := main_~i2~0#1;havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; 621#L22 assume !(0 == assume_abort_if_not_~cond#1); 678#L21 assume { :end_inline_assume_abort_if_not } true;~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~nomsg~0;~p4_new~0 := ~nomsg~0;~p5_old~0 := ~nomsg~0;~p5_new~0 := ~nomsg~0;main_~i2~0#1 := 0; 647#L395-2 [2021-11-13 18:17:22,451 INFO L793 eck$LassoCheckResult]: Loop: 647#L395-2 assume !!(main_~i2~0#1 < 10);assume { :begin_inline_node1 } true;havoc node1_#t~ite7#1, node1_~m1~0#1;havoc node1_~m1~0#1;node1_~m1~0#1 := ~nomsg~0; 628#L71 assume 0 != ~mode1~0 % 256;~r1~0 := (if (1 + ~r1~0) % 256 <= 127 then (1 + ~r1~0) % 256 else (1 + ~r1~0) % 256 - 256);node1_~m1~0#1 := ~p5_old~0;~p5_old~0 := ~nomsg~0; 629#L75 assume !(node1_~m1~0#1 != ~nomsg~0); 677#L75-1 ~mode1~0 := 0; 623#L71-2 assume { :end_inline_node1 } true;assume { :begin_inline_node2 } true;havoc node2_#t~ite8#1, node2_~m2~0#1;havoc node2_~m2~0#1;node2_~m2~0#1 := ~nomsg~0; 691#L99 assume 0 != ~mode2~0 % 256;node2_~m2~0#1 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 692#L102 assume !(node2_~m2~0#1 != ~nomsg~0); 664#L102-1 ~mode2~0 := 0; 665#L99-2 assume { :end_inline_node2 } true;assume { :begin_inline_node3 } true;havoc node3_#t~ite9#1, node3_~m3~0#1;havoc node3_~m3~0#1;node3_~m3~0#1 := ~nomsg~0; 650#L124 assume 0 != ~mode3~0 % 256;node3_~m3~0#1 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 651#L127 assume !(node3_~m3~0#1 != ~nomsg~0); 662#L127-1 ~mode3~0 := 0; 663#L124-2 assume { :end_inline_node3 } true;assume { :begin_inline_node4 } true;havoc node4_#t~ite10#1, node4_~m4~0#1;havoc node4_~m4~0#1;node4_~m4~0#1 := ~nomsg~0; 670#L149 assume !(0 != ~mode4~0 % 256); 672#L162 assume ~send4~0 != ~nomsg~0 && ~p4_new~0 == ~nomsg~0;node4_#t~ite10#1 := ~send4~0; 724#L162-2 ~p4_new~0 := (if node4_#t~ite10#1 % 256 <= 127 then node4_#t~ite10#1 % 256 else node4_#t~ite10#1 % 256 - 256);havoc node4_#t~ite10#1;~mode4~0 := 1; 723#L149-2 assume { :end_inline_node4 } true;assume { :begin_inline_node5 } true;havoc node5_#t~ite11#1, node5_~m5~0#1;havoc node5_~m5~0#1;node5_~m5~0#1 := ~nomsg~0; 722#L174 assume 0 != ~mode5~0 % 256;node5_~m5~0#1 := ~p4_old~0;~p4_old~0 := ~nomsg~0; 720#L177 assume !(node5_~m5~0#1 != ~nomsg~0); 717#L177-1 ~mode5~0 := 0; 715#L174-2 assume { :end_inline_node5 } true;~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;~p4_old~0 := ~p4_new~0;~p4_new~0 := ~nomsg~0;~p5_old~0 := ~p5_new~0;~p5_new~0 := ~nomsg~0;assume { :begin_inline_check } true;havoc check_#res#1;havoc check_~tmp~1#1;havoc check_~tmp~1#1; 714#L331 assume ~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 + ~st5~0 <= 1; 713#L332 assume !(~r1~0 >= 5); 668#L335 assume 0 == ~st1~0 + ~st2~0 + ~st3~0 + ~st4~0 + ~st5~0; 669#L336 assume ~r1~0 < 5;check_~tmp~1#1 := 1; 675#L331-1 check_#res#1 := check_~tmp~1#1; 618#L351 main_#t~ret34#1 := check_#res#1;assume { :end_inline_check } true;main_~c1~0#1 := main_#t~ret34#1;havoc main_#t~ret34#1;assume { :begin_inline_assert } true;assert_#in~arg#1 := (if 0 == main_~c1~0#1 then 0 else 1);havoc assert_~arg#1;assert_~arg#1 := assert_#in~arg#1; 619#L425 assume !(0 == assert_~arg#1 % 256); 686#L420 assume { :end_inline_assert } true;main_#t~post35#1 := main_~i2~0#1;main_~i2~0#1 := 1 + main_#t~post35#1;havoc main_#t~post35#1; 647#L395-2 [2021-11-13 18:17:22,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:17:22,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1992034189, now seen corresponding path program 3 times [2021-11-13 18:17:22,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:17:22,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46673593] [2021-11-13 18:17:22,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:17:22,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:17:22,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:17:22,508 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:17:22,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:17:22,545 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:17:22,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:17:22,546 INFO L85 PathProgramCache]: Analyzing trace with hash -61241679, now seen corresponding path program 1 times [2021-11-13 18:17:22,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:17:22,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204794281] [2021-11-13 18:17:22,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:17:22,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:17:22,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:17:22,563 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 18:17:22,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 18:17:22,586 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 18:17:22,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:17:22,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1860371585, now seen corresponding path program 1 times [2021-11-13 18:17:22,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:17:22,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747858488] [2021-11-13 18:17:22,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:17:22,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:17:22,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:17:22,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:17:22,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:17:22,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747858488] [2021-11-13 18:17:22,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747858488] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:17:22,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:17:22,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:17:22,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997100819] [2021-11-13 18:17:22,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:17:24,384 INFO L210 LassoAnalysis]: Preferences: [2021-11-13 18:17:24,385 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-13 18:17:24,385 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-13 18:17:24,394 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-13 18:17:24,395 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-13 18:17:24,395 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:17:24,395 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-13 18:17:24,395 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-13 18:17:24,395 INFO L133 ssoRankerPreferences]: Filename of dumped script: pals_lcr.5.1.ufo.BOUNDED-10.pals.c_Iteration4_Loop [2021-11-13 18:17:24,395 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-13 18:17:24,396 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-13 18:17:24,430 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:17:24,436 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:17:24,443 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:17:24,448 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:17:24,450 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:17:24,456 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:17:24,474 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:17:24,479 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:17:24,482 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:17:24,627 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:17:24,638 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:17:24,643 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:17:24,646 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:17:24,652 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:17:24,657 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:17:24,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:17:24,663 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:17:24,670 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:17:26,790 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-13 18:17:26,791 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-13 18:17:26,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:17:26,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:17:26,796 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 18:17:26,810 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-13 18:17:26,810 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-13 18:17:26,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-13 18:17:26,845 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-13 18:17:26,845 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_node1_#t~ite7#1=0} Honda state: {ULTIMATE.start_node1_#t~ite7#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-13 18:17:26,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:17:26,885 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:17:26,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:17:26,886 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 18:17:26,888 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-13 18:17:26,888 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-13 18:17:26,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-13 18:17:26,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:17:26,942 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:17:26,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:17:26,944 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 18:17:26,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-13 18:17:26,949 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-13 18:17:26,949 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-13 18:17:27,223 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-13 18:17:27,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-13 18:17:27,229 INFO L210 LassoAnalysis]: Preferences: [2021-11-13 18:17:27,229 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-13 18:17:27,230 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-13 18:17:27,230 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-13 18:17:27,230 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-13 18:17:27,230 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:17:27,230 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-13 18:17:27,230 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-13 18:17:27,230 INFO L133 ssoRankerPreferences]: Filename of dumped script: pals_lcr.5.1.ufo.BOUNDED-10.pals.c_Iteration4_Loop [2021-11-13 18:17:27,230 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-13 18:17:27,230 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-13 18:17:27,237 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:17:27,246 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:17:27,433 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:17:27,450 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:17:27,452 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:17:27,458 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:17:27,474 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:17:27,477 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:17:27,483 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:17:27,485 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:17:27,487 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:17:27,493 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:17:27,499 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:17:27,502 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:17:27,507 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:17:27,523 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:17:27,527 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:17:27,529 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 18:17:29,713 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-13 18:17:29,719 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-13 18:17:29,721 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:17:29,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:17:29,729 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 18:17:29,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-13 18:17:29,750 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-13 18:17:29,760 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-13 18:17:29,761 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-13 18:17:29,761 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-13 18:17:29,761 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-13 18:17:29,761 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-13 18:17:29,765 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-13 18:17:29,765 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-13 18:17:29,778 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-13 18:17:29,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-11-13 18:17:29,823 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:17:29,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:17:29,825 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 18:17:29,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-13 18:17:29,829 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-13 18:17:29,841 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-13 18:17:29,841 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-13 18:17:29,842 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-13 18:17:29,842 INFO L204 nArgumentSynthesizer]: 4 loop disjuncts [2021-11-13 18:17:29,842 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-13 18:17:29,906 INFO L401 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2021-11-13 18:17:29,907 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-13 18:17:29,953 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-13 18:17:29,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-11-13 18:17:29,990 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:17:29,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:17:29,992 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 18:17:29,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-13 18:17:29,994 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-13 18:17:30,005 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-13 18:17:30,005 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-13 18:17:30,005 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-13 18:17:30,006 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-13 18:17:30,006 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-13 18:17:30,007 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-13 18:17:30,008 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-13 18:17:30,018 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-13 18:17:30,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-11-13 18:17:30,062 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:17:30,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:17:30,064 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 18:17:30,070 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-13 18:17:30,081 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-13 18:17:30,081 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-13 18:17:30,081 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-13 18:17:30,081 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-13 18:17:30,081 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-13 18:17:30,082 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-13 18:17:30,082 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-13 18:17:30,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-11-13 18:17:30,101 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-13 18:17:30,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-11-13 18:17:30,140 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:17:30,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:17:30,142 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 18:17:30,149 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-13 18:17:30,160 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-13 18:17:30,160 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-13 18:17:30,160 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-13 18:17:30,160 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-13 18:17:30,160 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-13 18:17:30,161 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-13 18:17:30,161 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-13 18:17:30,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-11-13 18:17:30,165 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-13 18:17:30,173 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-13 18:17:30,173 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-13 18:17:30,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 18:17:30,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:17:30,177 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 18:17:30,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-11-13 18:17:30,181 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-13 18:17:30,181 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-13 18:17:30,181 INFO L513 LassoAnalysis]: Proved termination. [2021-11-13 18:17:30,182 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i2~0#1) = -2*ULTIMATE.start_main_~i2~0#1 + 19 Supporting invariants [] [2021-11-13 18:17:30,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-11-13 18:17:30,229 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-13 18:17:30,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:17:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:17:30,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:17:30,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:17:30,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:17:30,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 18:17:30,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:17:30,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:17:30,761 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-11-13 18:17:30,762 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 131 states and 180 transitions. cyclomatic complexity: 50 Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:17:30,842 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 131 states and 180 transitions. cyclomatic complexity: 50. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 224 states and 323 transitions. Complement of second has 4 states. [2021-11-13 18:17:30,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-13 18:17:30,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:17:30,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2021-11-13 18:17:30,846 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 114 transitions. Stem has 37 letters. Loop has 29 letters. [2021-11-13 18:17:30,848 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-13 18:17:30,849 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 114 transitions. Stem has 66 letters. Loop has 29 letters. [2021-11-13 18:17:30,853 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-13 18:17:30,853 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 114 transitions. Stem has 37 letters. Loop has 58 letters. [2021-11-13 18:17:30,857 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-13 18:17:30,858 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 224 states and 323 transitions. [2021-11-13 18:17:30,864 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-13 18:17:30,864 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 224 states to 0 states and 0 transitions. [2021-11-13 18:17:30,864 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-11-13 18:17:30,864 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-11-13 18:17:30,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-11-13 18:17:30,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:17:30,865 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-13 18:17:30,865 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-13 18:17:30,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:17:30,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:17:30,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:17:30,866 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:17:30,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:17:30,866 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-11-13 18:17:30,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 18:17:30,870 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-11-13 18:17:30,870 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-13 18:17:30,870 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-11-13 18:17:30,871 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-11-13 18:17:30,871 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-11-13 18:17:30,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-11-13 18:17:30,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 18:17:30,871 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-13 18:17:30,871 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-13 18:17:30,871 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-13 18:17:30,872 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-11-13 18:17:30,872 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-11-13 18:17:30,872 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-13 18:17:30,872 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-11-13 18:17:30,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.11 06:17:30 BoogieIcfgContainer [2021-11-13 18:17:30,881 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-13 18:17:30,882 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 18:17:30,882 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 18:17:30,882 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 18:17:30,883 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:17:20" (3/4) ... [2021-11-13 18:17:30,896 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-13 18:17:30,897 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 18:17:30,900 INFO L158 Benchmark]: Toolchain (without parser) took 11817.85ms. Allocated memory was 113.2MB in the beginning and 161.5MB in the end (delta: 48.2MB). Free memory was 72.1MB in the beginning and 77.9MB in the end (delta: -5.7MB). Peak memory consumption was 40.5MB. Max. memory is 16.1GB. [2021-11-13 18:17:30,903 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 113.2MB. Free memory is still 89.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:17:30,904 INFO L158 Benchmark]: CACSL2BoogieTranslator took 480.55ms. Allocated memory is still 113.2MB. Free memory was 71.9MB in the beginning and 83.0MB in the end (delta: -11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 18:17:30,905 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.11ms. Allocated memory is still 113.2MB. Free memory was 83.0MB in the beginning and 80.6MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-13 18:17:30,906 INFO L158 Benchmark]: Boogie Preprocessor took 62.54ms. Allocated memory is still 113.2MB. Free memory was 80.6MB in the beginning and 78.8MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:17:30,907 INFO L158 Benchmark]: RCFGBuilder took 795.10ms. Allocated memory is still 113.2MB. Free memory was 78.5MB in the beginning and 59.3MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-11-13 18:17:30,911 INFO L158 Benchmark]: BuchiAutomizer took 10387.69ms. Allocated memory was 113.2MB in the beginning and 161.5MB in the end (delta: 48.2MB). Free memory was 59.3MB in the beginning and 77.9MB in the end (delta: -18.6MB). Peak memory consumption was 30.3MB. Max. memory is 16.1GB. [2021-11-13 18:17:30,914 INFO L158 Benchmark]: Witness Printer took 14.91ms. Allocated memory is still 161.5MB. Free memory is still 77.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 18:17:30,917 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 113.2MB. Free memory is still 89.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 480.55ms. Allocated memory is still 113.2MB. Free memory was 71.9MB in the beginning and 83.0MB in the end (delta: -11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.11ms. Allocated memory is still 113.2MB. Free memory was 83.0MB in the beginning and 80.6MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.54ms. Allocated memory is still 113.2MB. Free memory was 80.6MB in the beginning and 78.8MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 795.10ms. Allocated memory is still 113.2MB. Free memory was 78.5MB in the beginning and 59.3MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * BuchiAutomizer took 10387.69ms. Allocated memory was 113.2MB in the beginning and 161.5MB in the end (delta: 48.2MB). Free memory was 59.3MB in the beginning and 77.9MB in the end (delta: -18.6MB). Peak memory consumption was 30.3MB. Max. memory is 16.1GB. * Witness Printer took 14.91ms. Allocated memory is still 161.5MB. Free memory is still 77.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (4 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function 19 + -2 * i2 and consists of 3 locations. 4 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 10.3s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 9.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.8s. Highest rank in rank-based complementation 3. Minimization of det autom 5. Minimization of nondet autom 0. Automata minimization 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 131 states and ocurred in iteration 3. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 259 SdHoareTripleChecker+Valid, 142.16ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 258 mSDsluCounter, 1487 SdHoareTripleChecker+Invalid, 95.54ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 937 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 36 IncrementalHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 550 mSDtfsCounter, 36 mSolverCounterSat, 25.72ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT0 conc0 concLT1 SILN0 SILU0 SILI1 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital191 mio100 ax100 hnf100 lsp58 ukn78 mio100 lsp100 div135 bol100 ite100 ukn100 eq189 hnf75 smp100 dnf707 smp49 tf100 neg99 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 130ms VariablesStem: 0 VariablesLoop: 28 DisjunctsStem: 1 DisjunctsLoop: 4 SupportingInvariants: 0 MotzkinApplications: 8 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-11-13 18:17:30,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-11-13 18:17:31,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f23710dd-da66-4cb2-bba6-d80a92bccc08/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE