./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt --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 bee805c83435f743386301350704561ae29ab547 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 01:21:44,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:21:44,810 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:21:44,865 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:21:44,866 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:21:44,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:21:44,873 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:21:44,878 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:21:44,880 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:21:44,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:21:44,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:21:44,891 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:21:44,892 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:21:44,895 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:21:44,897 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:21:44,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:21:44,904 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:21:44,905 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:21:44,907 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:21:44,917 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:21:44,919 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:21:44,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:21:44,924 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:21:44,925 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:21:44,930 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:21:44,930 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:21:44,931 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:21:44,933 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:21:44,934 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:21:44,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:21:44,937 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:21:44,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:21:44,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:21:44,942 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:21:44,944 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:21:44,944 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:21:44,945 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:21:44,945 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:21:44,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:21:44,947 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:21:44,947 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:21:44,949 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-13 01:21:45,005 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:21:45,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:21:45,006 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:21:45,007 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:21:45,008 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:21:45,008 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:21:45,009 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:21:45,009 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-13 01:21:45,009 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-13 01:21:45,009 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-13 01:21:45,011 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-13 01:21:45,011 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-13 01:21:45,011 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-13 01:21:45,011 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:21:45,012 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 01:21:45,012 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 01:21:45,012 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 01:21:45,012 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 01:21:45,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:21:45,013 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-13 01:21:45,013 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-13 01:21:45,013 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-13 01:21:45,013 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 01:21:45,014 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 01:21:45,014 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-13 01:21:45,014 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:21:45,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-13 01:21:45,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:21:45,016 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:21:45,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:21:45,017 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 01:21:45,017 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:21:45,019 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-13 01:21:45,019 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_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bee805c83435f743386301350704561ae29ab547 [2021-10-13 01:21:45,341 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:21:45,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:21:45,372 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:21:45,373 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:21:45,374 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:21:45,375 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c [2021-10-13 01:21:45,446 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/data/522b9ccd6/fa2d83294ba449e08e0674e98c131423/FLAG83828a657 [2021-10-13 01:21:46,012 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:21:46,013 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c [2021-10-13 01:21:46,026 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/data/522b9ccd6/fa2d83294ba449e08e0674e98c131423/FLAG83828a657 [2021-10-13 01:21:46,309 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/data/522b9ccd6/fa2d83294ba449e08e0674e98c131423 [2021-10-13 01:21:46,313 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:21:46,316 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 01:21:46,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:21:46,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:21:46,322 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:21:46,323 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:21:46" (1/1) ... [2021-10-13 01:21:46,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18d88e2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:21:46, skipping insertion in model container [2021-10-13 01:21:46,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:21:46" (1/1) ... [2021-10-13 01:21:46,336 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:21:46,394 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:21:46,669 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_900c1846-d8b7-4333-9b53-3c8854329f68/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c[12747,12760] [2021-10-13 01:21:46,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:21:46,682 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 01:21:46,785 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_900c1846-d8b7-4333-9b53-3c8854329f68/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c[12747,12760] [2021-10-13 01:21:46,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:21:46,810 INFO L208 MainTranslator]: Completed translation [2021-10-13 01:21:46,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:21:46 WrapperNode [2021-10-13 01:21:46,810 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:21:46,812 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 01:21:46,812 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 01:21:46,812 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 01:21:46,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:21:46" (1/1) ... [2021-10-13 01:21:46,855 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:21:46" (1/1) ... [2021-10-13 01:21:46,913 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 01:21:46,914 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 01:21:46,914 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 01:21:46,914 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 01:21:46,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:21:46" (1/1) ... [2021-10-13 01:21:46,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:21:46" (1/1) ... [2021-10-13 01:21:46,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:21:46" (1/1) ... [2021-10-13 01:21:46,930 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:21:46" (1/1) ... [2021-10-13 01:21:46,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:21:46" (1/1) ... [2021-10-13 01:21:46,968 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:21:46" (1/1) ... [2021-10-13 01:21:46,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:21:46" (1/1) ... [2021-10-13 01:21:46,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 01:21:46,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 01:21:46,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 01:21:46,995 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 01:21:46,996 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:21:46" (1/1) ... [2021-10-13 01:21:47,005 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:21:47,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:21:47,026 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:21:47,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-13 01:21:47,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 01:21:47,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 01:21:47,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 01:21:47,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 01:21:48,005 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 01:21:48,005 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-10-13 01:21:48,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:21:48 BoogieIcfgContainer [2021-10-13 01:21:48,013 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 01:21:48,015 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-13 01:21:48,015 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-13 01:21:48,019 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-13 01:21:48,020 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 01:21:48,021 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.10 01:21:46" (1/3) ... [2021-10-13 01:21:48,022 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@29ba3bd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 01:21:48, skipping insertion in model container [2021-10-13 01:21:48,022 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 01:21:48,022 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:21:46" (2/3) ... [2021-10-13 01:21:48,023 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@29ba3bd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 01:21:48, skipping insertion in model container [2021-10-13 01:21:48,023 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 01:21:48,023 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:21:48" (3/3) ... [2021-10-13 01:21:48,025 INFO L389 chiAutomizerObserver]: Analyzing ICFG pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c [2021-10-13 01:21:48,089 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-13 01:21:48,089 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-13 01:21:48,089 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-13 01:21:48,090 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-13 01:21:48,090 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-13 01:21:48,090 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-13 01:21:48,090 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-13 01:21:48,090 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-13 01:21:48,118 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 136 states, 135 states have (on average 1.7407407407407407) internal successors, (235), 135 states have internal predecessors, (235), 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) [2021-10-13 01:21:48,146 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 78 [2021-10-13 01:21:48,146 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:21:48,146 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:21:48,156 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] [2021-10-13 01:21:48,156 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:21:48,156 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-13 01:21:48,157 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 136 states, 135 states have (on average 1.7407407407407407) internal successors, (235), 135 states have internal predecessors, (235), 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) [2021-10-13 01:21:48,166 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 78 [2021-10-13 01:21:48,166 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:21:48,166 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:21:48,169 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] [2021-10-13 01:21:48,169 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:21:48,177 INFO L791 eck$LassoCheckResult]: Stem: 125#ULTIMATE.startENTRYtrue #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(43);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~nomsg~0 := -1;~p12~0 := 0;~p12_old~0 := 0;~p12_new~0 := 0;~ep12~0 := 0;~p13~0 := 0;~p13_old~0 := 0;~p13_new~0 := 0;~ep13~0 := 0;~p21~0 := 0;~p21_old~0 := 0;~p21_new~0 := 0;~ep21~0 := 0;~p23~0 := 0;~p23_old~0 := 0;~p23_new~0 := 0;~ep23~0 := 0;~p31~0 := 0;~p31_old~0 := 0;~p31_new~0 := 0;~ep31~0 := 0;~p32~0 := 0;~p32_old~0 := 0;~p32_new~0 := 0;~ep32~0 := 0;~id1~0 := 0;~r1~0 := 0;~st1~0 := 0;~nl1~0 := 0;~m1~0 := 0;~max1~0 := 0;~mode1~0 := 0;~newmax1~0 := 0;~id2~0 := 0;~r2~0 := 0;~st2~0 := 0;~nl2~0 := 0;~m2~0 := 0;~max2~0 := 0;~mode2~0 := 0;~newmax2~0 := 0;~id3~0 := 0;~r3~0 := 0;~st3~0 := 0;~nl3~0 := 0;~m3~0 := 0;~max3~0 := 0;~mode3~0 := 0;~newmax3~0 := 0; 42#L-1true havoc main_#res;havoc main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, main_#t~nondet23, main_#t~nondet24, main_#t~nondet25, main_#t~nondet26, main_#t~nondet27, main_#t~nondet28, main_#t~nondet29, main_#t~nondet30, main_#t~nondet31, main_#t~nondet32, main_#t~nondet33, main_#t~nondet34, main_#t~nondet35, main_#t~nondet36, main_#t~nondet37, main_#t~nondet38, main_#t~nondet39, main_#t~nondet40, main_#t~nondet41, main_#t~nondet42, main_#t~ret43, main_#t~ret44, main_#t~post45, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~ep12~0 := main_#t~nondet13;havoc main_#t~nondet13;~ep13~0 := main_#t~nondet14;havoc main_#t~nondet14;~ep21~0 := main_#t~nondet15;havoc main_#t~nondet15;~ep23~0 := main_#t~nondet16;havoc main_#t~nondet16;~ep31~0 := main_#t~nondet17;havoc main_#t~nondet17;~ep32~0 := main_#t~nondet18;havoc main_#t~nondet18;~id1~0 := main_#t~nondet19;havoc main_#t~nondet19;~r1~0 := main_#t~nondet20;havoc main_#t~nondet20;~st1~0 := main_#t~nondet21;havoc main_#t~nondet21;~nl1~0 := main_#t~nondet22;havoc main_#t~nondet22;~m1~0 := main_#t~nondet23;havoc main_#t~nondet23;~max1~0 := main_#t~nondet24;havoc main_#t~nondet24;~mode1~0 := main_#t~nondet25;havoc main_#t~nondet25;~newmax1~0 := main_#t~nondet26;havoc main_#t~nondet26;~id2~0 := main_#t~nondet27;havoc main_#t~nondet27;~r2~0 := main_#t~nondet28;havoc main_#t~nondet28;~st2~0 := main_#t~nondet29;havoc main_#t~nondet29;~nl2~0 := main_#t~nondet30;havoc main_#t~nondet30;~m2~0 := main_#t~nondet31;havoc main_#t~nondet31;~max2~0 := main_#t~nondet32;havoc main_#t~nondet32;~mode2~0 := main_#t~nondet33;havoc main_#t~nondet33;~newmax2~0 := main_#t~nondet34;havoc main_#t~nondet34;~id3~0 := main_#t~nondet35;havoc main_#t~nondet35;~r3~0 := main_#t~nondet36;havoc main_#t~nondet36;~st3~0 := main_#t~nondet37;havoc main_#t~nondet37;~nl3~0 := main_#t~nondet38;havoc main_#t~nondet38;~m3~0 := main_#t~nondet39;havoc main_#t~nondet39;~max3~0 := main_#t~nondet40;havoc main_#t~nondet40;~mode3~0 := main_#t~nondet41;havoc main_#t~nondet41;~newmax3~0 := main_#t~nondet42;havoc main_#t~nondet42;havoc init_#res;havoc init_~r121~0, init_~r131~0, init_~r211~0, init_~r231~0, init_~r311~0, init_~r321~0, init_~r122~0, init_~tmp~0, init_~r132~0, init_~tmp___0~0, init_~r212~0, init_~tmp___1~0, init_~r232~0, init_~tmp___2~0, init_~r312~0, init_~tmp___3~0, init_~r322~0, init_~tmp___4~0, init_~tmp___5~0;havoc init_~r121~0;havoc init_~r131~0;havoc init_~r211~0;havoc init_~r231~0;havoc init_~r311~0;havoc init_~r321~0;havoc init_~r122~0;havoc init_~tmp~0;havoc init_~r132~0;havoc init_~tmp___0~0;havoc init_~r212~0;havoc init_~tmp___1~0;havoc init_~r232~0;havoc init_~tmp___2~0;havoc init_~r312~0;havoc init_~tmp___3~0;havoc init_~r322~0;havoc init_~tmp___4~0;havoc init_~tmp___5~0;init_~r121~0 := ~ep12~0;init_~r131~0 := ~ep13~0;init_~r211~0 := ~ep21~0;init_~r231~0 := ~ep23~0;init_~r311~0 := ~ep31~0;init_~r321~0 := ~ep32~0; 20#L255true assume 0 != init_~r121~0 % 256;init_~tmp~0 := 1; 9#L258-1true init_~r122~0 := (if 0 == init_~tmp~0 then 0 else 1); 22#L268true assume 0 != init_~r131~0 % 256;init_~tmp___0~0 := 1; 26#L271-1true init_~r132~0 := (if 0 == init_~tmp___0~0 then 0 else 1); 13#L281true assume 0 != init_~r211~0 % 256;init_~tmp___1~0 := 1; 48#L284-1true init_~r212~0 := (if 0 == init_~tmp___1~0 then 0 else 1); 119#L294true assume 0 != init_~r231~0 % 256;init_~tmp___2~0 := 1; 34#L297-1true init_~r232~0 := (if 0 == init_~tmp___2~0 then 0 else 1); 75#L307true assume 0 != init_~r311~0 % 256;init_~tmp___3~0 := 1; 76#L310-1true init_~r312~0 := (if 0 == init_~tmp___3~0 then 0 else 1); 79#L320true assume 0 != init_~r321~0 % 256;init_~tmp___4~0 := 1; 87#L323-1true init_~r322~0 := (if 0 == init_~tmp___4~0 then 0 else 1); 63#L333true assume !(~id1~0 != ~id2~0);init_~tmp___5~0 := 0; 115#L333-1true init_#res := init_~tmp___5~0; 17#L430true main_#t~ret43 := init_#res;main_~i2~0 := main_#t~ret43;havoc main_#t~ret43; 92#L527true assume !(0 == main_~i2~0); 120#L527-2true ~p12_old~0 := ~nomsg~0;~p12_new~0 := ~nomsg~0;~p13_old~0 := ~nomsg~0;~p13_new~0 := ~nomsg~0;~p21_old~0 := ~nomsg~0;~p21_new~0 := ~nomsg~0;~p23_old~0 := ~nomsg~0;~p23_new~0 := ~nomsg~0;~p31_old~0 := ~nomsg~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~nomsg~0;~p32_new~0 := ~nomsg~0;main_~i2~0 := 0; 19#L541-2true [2021-10-13 01:21:48,178 INFO L793 eck$LassoCheckResult]: Loop: 19#L541-2true assume !!(main_~i2~0 < 6);havoc node1_#t~ite7, node1_#t~ite8, node1_~newmax~0;havoc node1_~newmax~0;node1_~newmax~0 := 0; 53#L79true assume !(0 != ~mode1~0 % 256); 130#L107true assume !(~r1~0 < 2); 126#L107-1true ~mode1~0 := 1; 40#L79-2true havoc node2_#t~ite9, node2_#t~ite10, node2_~newmax~1;havoc node2_~newmax~1;node2_~newmax~1 := 0; 58#L130true assume !(0 != ~mode2~0 % 256); 15#L158true assume !(~r2~0 < 2); 90#L158-1true ~mode2~0 := 1; 55#L130-2true havoc node3_#t~ite11, node3_#t~ite12, node3_~newmax~2;havoc node3_~newmax~2;node3_~newmax~2 := 0; 95#L181true assume !(0 != ~mode3~0 % 256); 114#L209true assume !(~r3~0 < 2); 137#L209-1true ~mode3~0 := 1; 47#L181-2true ~p12_old~0 := ~p12_new~0;~p12_new~0 := ~nomsg~0;~p13_old~0 := ~p13_new~0;~p13_new~0 := ~nomsg~0;~p21_old~0 := ~p21_new~0;~p21_new~0 := ~nomsg~0;~p23_old~0 := ~p23_new~0;~p23_new~0 := ~nomsg~0;~p31_old~0 := ~p31_new~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~p32_new~0;~p32_new~0 := ~nomsg~0;havoc check_#res;havoc check_~tmp~1;havoc check_~tmp~1; 93#L438true assume !(~st1~0 + ~st2~0 + ~st3~0 <= 1);check_~tmp~1 := 0; 44#L438-1true check_#res := check_~tmp~1; 98#L486true main_#t~ret44 := check_#res;main_~c1~0 := main_#t~ret44;havoc main_#t~ret44;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 128#L571true assume !(0 == assert_~arg % 256); 116#L566true main_#t~post45 := main_~i2~0;main_~i2~0 := 1 + main_#t~post45;havoc main_#t~post45; 19#L541-2true [2021-10-13 01:21:48,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:21:48,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1710390244, now seen corresponding path program 1 times [2021-10-13 01:21:48,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:21:48,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751692802] [2021-10-13 01:21:48,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:21:48,196 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:21:48,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:21:48,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:21:48,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:21:48,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751692802] [2021-10-13 01:21:48,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751692802] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:21:48,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:21:48,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 01:21:48,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692988075] [2021-10-13 01:21:48,483 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-13 01:21:48,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:21:48,484 INFO L82 PathProgramCache]: Analyzing trace with hash -365412558, now seen corresponding path program 1 times [2021-10-13 01:21:48,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:21:48,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306715744] [2021-10-13 01:21:48,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:21:48,486 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:21:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:21:48,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:21:48,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:21:48,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306715744] [2021-10-13 01:21:48,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306715744] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:21:48,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:21:48,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 01:21:48,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026946895] [2021-10-13 01:21:48,651 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 01:21:48,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:21:48,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 01:21:48,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:21:48,671 INFO L87 Difference]: Start difference. First operand has 136 states, 135 states have (on average 1.7407407407407407) internal successors, (235), 135 states have internal predecessors, (235), 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 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-10-13 01:21:48,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:21:48,795 INFO L93 Difference]: Finished difference Result 140 states and 235 transitions. [2021-10-13 01:21:48,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 01:21:48,797 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 140 states and 235 transitions. [2021-10-13 01:21:48,815 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 77 [2021-10-13 01:21:48,826 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 140 states to 131 states and 219 transitions. [2021-10-13 01:21:48,827 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 131 [2021-10-13 01:21:48,830 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 131 [2021-10-13 01:21:48,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 131 states and 219 transitions. [2021-10-13 01:21:48,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 01:21:48,834 INFO L681 BuchiCegarLoop]: Abstraction has 131 states and 219 transitions. [2021-10-13 01:21:48,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states and 219 transitions. [2021-10-13 01:21:48,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2021-10-13 01:21:48,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 131 states have (on average 1.6717557251908397) internal successors, (219), 130 states have internal predecessors, (219), 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) [2021-10-13 01:21:48,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 219 transitions. [2021-10-13 01:21:48,875 INFO L704 BuchiCegarLoop]: Abstraction has 131 states and 219 transitions. [2021-10-13 01:21:48,875 INFO L587 BuchiCegarLoop]: Abstraction has 131 states and 219 transitions. [2021-10-13 01:21:48,875 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-13 01:21:48,875 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 131 states and 219 transitions. [2021-10-13 01:21:48,878 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 77 [2021-10-13 01:21:48,878 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:21:48,878 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:21:48,880 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] [2021-10-13 01:21:48,880 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] [2021-10-13 01:21:48,881 INFO L791 eck$LassoCheckResult]: Stem: 424#ULTIMATE.startENTRY #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(43);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~nomsg~0 := -1;~p12~0 := 0;~p12_old~0 := 0;~p12_new~0 := 0;~ep12~0 := 0;~p13~0 := 0;~p13_old~0 := 0;~p13_new~0 := 0;~ep13~0 := 0;~p21~0 := 0;~p21_old~0 := 0;~p21_new~0 := 0;~ep21~0 := 0;~p23~0 := 0;~p23_old~0 := 0;~p23_new~0 := 0;~ep23~0 := 0;~p31~0 := 0;~p31_old~0 := 0;~p31_new~0 := 0;~ep31~0 := 0;~p32~0 := 0;~p32_old~0 := 0;~p32_new~0 := 0;~ep32~0 := 0;~id1~0 := 0;~r1~0 := 0;~st1~0 := 0;~nl1~0 := 0;~m1~0 := 0;~max1~0 := 0;~mode1~0 := 0;~newmax1~0 := 0;~id2~0 := 0;~r2~0 := 0;~st2~0 := 0;~nl2~0 := 0;~m2~0 := 0;~max2~0 := 0;~mode2~0 := 0;~newmax2~0 := 0;~id3~0 := 0;~r3~0 := 0;~st3~0 := 0;~nl3~0 := 0;~m3~0 := 0;~max3~0 := 0;~mode3~0 := 0;~newmax3~0 := 0; 361#L-1 havoc main_#res;havoc main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, main_#t~nondet23, main_#t~nondet24, main_#t~nondet25, main_#t~nondet26, main_#t~nondet27, main_#t~nondet28, main_#t~nondet29, main_#t~nondet30, main_#t~nondet31, main_#t~nondet32, main_#t~nondet33, main_#t~nondet34, main_#t~nondet35, main_#t~nondet36, main_#t~nondet37, main_#t~nondet38, main_#t~nondet39, main_#t~nondet40, main_#t~nondet41, main_#t~nondet42, main_#t~ret43, main_#t~ret44, main_#t~post45, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~ep12~0 := main_#t~nondet13;havoc main_#t~nondet13;~ep13~0 := main_#t~nondet14;havoc main_#t~nondet14;~ep21~0 := main_#t~nondet15;havoc main_#t~nondet15;~ep23~0 := main_#t~nondet16;havoc main_#t~nondet16;~ep31~0 := main_#t~nondet17;havoc main_#t~nondet17;~ep32~0 := main_#t~nondet18;havoc main_#t~nondet18;~id1~0 := main_#t~nondet19;havoc main_#t~nondet19;~r1~0 := main_#t~nondet20;havoc main_#t~nondet20;~st1~0 := main_#t~nondet21;havoc main_#t~nondet21;~nl1~0 := main_#t~nondet22;havoc main_#t~nondet22;~m1~0 := main_#t~nondet23;havoc main_#t~nondet23;~max1~0 := main_#t~nondet24;havoc main_#t~nondet24;~mode1~0 := main_#t~nondet25;havoc main_#t~nondet25;~newmax1~0 := main_#t~nondet26;havoc main_#t~nondet26;~id2~0 := main_#t~nondet27;havoc main_#t~nondet27;~r2~0 := main_#t~nondet28;havoc main_#t~nondet28;~st2~0 := main_#t~nondet29;havoc main_#t~nondet29;~nl2~0 := main_#t~nondet30;havoc main_#t~nondet30;~m2~0 := main_#t~nondet31;havoc main_#t~nondet31;~max2~0 := main_#t~nondet32;havoc main_#t~nondet32;~mode2~0 := main_#t~nondet33;havoc main_#t~nondet33;~newmax2~0 := main_#t~nondet34;havoc main_#t~nondet34;~id3~0 := main_#t~nondet35;havoc main_#t~nondet35;~r3~0 := main_#t~nondet36;havoc main_#t~nondet36;~st3~0 := main_#t~nondet37;havoc main_#t~nondet37;~nl3~0 := main_#t~nondet38;havoc main_#t~nondet38;~m3~0 := main_#t~nondet39;havoc main_#t~nondet39;~max3~0 := main_#t~nondet40;havoc main_#t~nondet40;~mode3~0 := main_#t~nondet41;havoc main_#t~nondet41;~newmax3~0 := main_#t~nondet42;havoc main_#t~nondet42;havoc init_#res;havoc init_~r121~0, init_~r131~0, init_~r211~0, init_~r231~0, init_~r311~0, init_~r321~0, init_~r122~0, init_~tmp~0, init_~r132~0, init_~tmp___0~0, init_~r212~0, init_~tmp___1~0, init_~r232~0, init_~tmp___2~0, init_~r312~0, init_~tmp___3~0, init_~r322~0, init_~tmp___4~0, init_~tmp___5~0;havoc init_~r121~0;havoc init_~r131~0;havoc init_~r211~0;havoc init_~r231~0;havoc init_~r311~0;havoc init_~r321~0;havoc init_~r122~0;havoc init_~tmp~0;havoc init_~r132~0;havoc init_~tmp___0~0;havoc init_~r212~0;havoc init_~tmp___1~0;havoc init_~r232~0;havoc init_~tmp___2~0;havoc init_~r312~0;havoc init_~tmp___3~0;havoc init_~r322~0;havoc init_~tmp___4~0;havoc init_~tmp___5~0;init_~r121~0 := ~ep12~0;init_~r131~0 := ~ep13~0;init_~r211~0 := ~ep21~0;init_~r231~0 := ~ep23~0;init_~r311~0 := ~ep31~0;init_~r321~0 := ~ep32~0; 324#L255 assume 0 != init_~r121~0 % 256;init_~tmp~0 := 1; 307#L258-1 init_~r122~0 := (if 0 == init_~tmp~0 then 0 else 1); 308#L268 assume 0 != init_~r131~0 % 256;init_~tmp___0~0 := 1; 332#L271-1 init_~r132~0 := (if 0 == init_~tmp___0~0 then 0 else 1); 313#L281 assume 0 != init_~r211~0 % 256;init_~tmp___1~0 := 1; 314#L284-1 init_~r212~0 := (if 0 == init_~tmp___1~0 then 0 else 1); 368#L294 assume 0 != init_~r231~0 % 256;init_~tmp___2~0 := 1; 348#L297-1 init_~r232~0 := (if 0 == init_~tmp___2~0 then 0 else 1); 352#L307 assume 0 != init_~r311~0 % 256;init_~tmp___3~0 := 1; 370#L310-1 init_~r312~0 := (if 0 == init_~tmp___3~0 then 0 else 1); 400#L320 assume 0 != init_~r321~0 % 256;init_~tmp___4~0 := 1; 298#L323-1 init_~r322~0 := (if 0 == init_~tmp___4~0 then 0 else 1); 389#L333 assume !(~id1~0 != ~id2~0);init_~tmp___5~0 := 0; 339#L333-1 init_#res := init_~tmp___5~0; 318#L430 main_#t~ret43 := init_#res;main_~i2~0 := main_#t~ret43;havoc main_#t~ret43; 319#L527 assume !(0 == main_~i2~0); 412#L527-2 ~p12_old~0 := ~nomsg~0;~p12_new~0 := ~nomsg~0;~p13_old~0 := ~nomsg~0;~p13_new~0 := ~nomsg~0;~p21_old~0 := ~nomsg~0;~p21_new~0 := ~nomsg~0;~p23_old~0 := ~nomsg~0;~p23_new~0 := ~nomsg~0;~p31_old~0 := ~nomsg~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~nomsg~0;~p32_new~0 := ~nomsg~0;main_~i2~0 := 0; 322#L541-2 [2021-10-13 01:21:48,881 INFO L793 eck$LassoCheckResult]: Loop: 322#L541-2 assume !!(main_~i2~0 < 6);havoc node1_#t~ite7, node1_#t~ite8, node1_~newmax~0;havoc node1_~newmax~0;node1_~newmax~0 := 0; 323#L79 assume !(0 != ~mode1~0 % 256); 377#L107 assume !(~r1~0 < 2); 374#L107-1 ~mode1~0 := 1; 321#L79-2 havoc node2_#t~ite9, node2_#t~ite10, node2_~newmax~1;havoc node2_~newmax~1;node2_~newmax~1 := 0; 360#L130 assume !(0 != ~mode2~0 % 256); 316#L158 assume !(~r2~0 < 2); 311#L158-1 ~mode2~0 := 1; 382#L130-2 havoc node3_#t~ite11, node3_#t~ite12, node3_~newmax~2;havoc node3_~newmax~2;node3_~newmax~2 := 0; 383#L181 assume !(0 != ~mode3~0 % 256); 413#L209 assume !(~r3~0 < 2); 345#L209-1 ~mode3~0 := 1; 327#L181-2 ~p12_old~0 := ~p12_new~0;~p12_new~0 := ~nomsg~0;~p13_old~0 := ~p13_new~0;~p13_new~0 := ~nomsg~0;~p21_old~0 := ~p21_new~0;~p21_new~0 := ~nomsg~0;~p23_old~0 := ~p23_new~0;~p23_new~0 := ~nomsg~0;~p31_old~0 := ~p31_new~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~p32_new~0;~p32_new~0 := ~nomsg~0;havoc check_#res;havoc check_~tmp~1;havoc check_~tmp~1; 367#L438 assume ~st1~0 + ~st2~0 + ~st3~0 <= 1; 380#L439 assume ~st1~0 + ~nl1~0 <= 1; 381#L440 assume ~st2~0 + ~nl2~0 <= 1; 330#L441 assume ~st3~0 + ~nl3~0 <= 1; 331#L442 assume ~r1~0 >= 2; 340#L446 assume ~r1~0 < 2; 411#L451 assume ~r1~0 >= 2; 295#L456 assume ~r1~0 < 2;check_~tmp~1 := 1; 363#L438-1 check_#res := check_~tmp~1; 364#L486 main_#t~ret44 := check_#res;main_~c1~0 := main_#t~ret44;havoc main_#t~ret44;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 415#L571 assume !(0 == assert_~arg % 256); 421#L566 main_#t~post45 := main_~i2~0;main_~i2~0 := 1 + main_#t~post45;havoc main_#t~post45; 322#L541-2 [2021-10-13 01:21:48,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:21:48,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1710390244, now seen corresponding path program 2 times [2021-10-13 01:21:48,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:21:48,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267588861] [2021-10-13 01:21:48,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:21:48,883 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:21:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:21:49,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:21:49,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:21:49,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267588861] [2021-10-13 01:21:49,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267588861] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:21:49,015 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:21:49,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 01:21:49,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725478473] [2021-10-13 01:21:49,017 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-13 01:21:49,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:21:49,023 INFO L82 PathProgramCache]: Analyzing trace with hash 630711638, now seen corresponding path program 1 times [2021-10-13 01:21:49,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:21:49,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373833688] [2021-10-13 01:21:49,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:21:49,026 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:21:49,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:21:49,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:21:49,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:21:49,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373833688] [2021-10-13 01:21:49,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373833688] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:21:49,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:21:49,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:21:49,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264960393] [2021-10-13 01:21:49,074 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 01:21:49,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:21:49,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 01:21:49,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:21:49,075 INFO L87 Difference]: Start difference. First operand 131 states and 219 transitions. cyclomatic complexity: 89 Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:21:49,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:21:49,185 INFO L93 Difference]: Finished difference Result 211 states and 344 transitions. [2021-10-13 01:21:49,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 01:21:49,186 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 211 states and 344 transitions. [2021-10-13 01:21:49,192 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 77 [2021-10-13 01:21:49,198 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 211 states to 208 states and 318 transitions. [2021-10-13 01:21:49,198 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 208 [2021-10-13 01:21:49,200 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 208 [2021-10-13 01:21:49,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 208 states and 318 transitions. [2021-10-13 01:21:49,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 01:21:49,207 INFO L681 BuchiCegarLoop]: Abstraction has 208 states and 318 transitions. [2021-10-13 01:21:49,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states and 318 transitions. [2021-10-13 01:21:49,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 131. [2021-10-13 01:21:49,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 131 states have (on average 1.4885496183206106) internal successors, (195), 130 states have internal predecessors, (195), 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) [2021-10-13 01:21:49,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 195 transitions. [2021-10-13 01:21:49,230 INFO L704 BuchiCegarLoop]: Abstraction has 131 states and 195 transitions. [2021-10-13 01:21:49,230 INFO L587 BuchiCegarLoop]: Abstraction has 131 states and 195 transitions. [2021-10-13 01:21:49,231 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-13 01:21:49,231 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 131 states and 195 transitions. [2021-10-13 01:21:49,235 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 77 [2021-10-13 01:21:49,235 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:21:49,235 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:21:49,241 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, 1, 1, 1, 1, 1] [2021-10-13 01:21:49,242 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] [2021-10-13 01:21:49,244 INFO L791 eck$LassoCheckResult]: Stem: 779#ULTIMATE.startENTRY #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(43);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~nomsg~0 := -1;~p12~0 := 0;~p12_old~0 := 0;~p12_new~0 := 0;~ep12~0 := 0;~p13~0 := 0;~p13_old~0 := 0;~p13_new~0 := 0;~ep13~0 := 0;~p21~0 := 0;~p21_old~0 := 0;~p21_new~0 := 0;~ep21~0 := 0;~p23~0 := 0;~p23_old~0 := 0;~p23_new~0 := 0;~ep23~0 := 0;~p31~0 := 0;~p31_old~0 := 0;~p31_new~0 := 0;~ep31~0 := 0;~p32~0 := 0;~p32_old~0 := 0;~p32_new~0 := 0;~ep32~0 := 0;~id1~0 := 0;~r1~0 := 0;~st1~0 := 0;~nl1~0 := 0;~m1~0 := 0;~max1~0 := 0;~mode1~0 := 0;~newmax1~0 := 0;~id2~0 := 0;~r2~0 := 0;~st2~0 := 0;~nl2~0 := 0;~m2~0 := 0;~max2~0 := 0;~mode2~0 := 0;~newmax2~0 := 0;~id3~0 := 0;~r3~0 := 0;~st3~0 := 0;~nl3~0 := 0;~m3~0 := 0;~max3~0 := 0;~mode3~0 := 0;~newmax3~0 := 0; 715#L-1 havoc main_#res;havoc main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, main_#t~nondet23, main_#t~nondet24, main_#t~nondet25, main_#t~nondet26, main_#t~nondet27, main_#t~nondet28, main_#t~nondet29, main_#t~nondet30, main_#t~nondet31, main_#t~nondet32, main_#t~nondet33, main_#t~nondet34, main_#t~nondet35, main_#t~nondet36, main_#t~nondet37, main_#t~nondet38, main_#t~nondet39, main_#t~nondet40, main_#t~nondet41, main_#t~nondet42, main_#t~ret43, main_#t~ret44, main_#t~post45, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~ep12~0 := main_#t~nondet13;havoc main_#t~nondet13;~ep13~0 := main_#t~nondet14;havoc main_#t~nondet14;~ep21~0 := main_#t~nondet15;havoc main_#t~nondet15;~ep23~0 := main_#t~nondet16;havoc main_#t~nondet16;~ep31~0 := main_#t~nondet17;havoc main_#t~nondet17;~ep32~0 := main_#t~nondet18;havoc main_#t~nondet18;~id1~0 := main_#t~nondet19;havoc main_#t~nondet19;~r1~0 := main_#t~nondet20;havoc main_#t~nondet20;~st1~0 := main_#t~nondet21;havoc main_#t~nondet21;~nl1~0 := main_#t~nondet22;havoc main_#t~nondet22;~m1~0 := main_#t~nondet23;havoc main_#t~nondet23;~max1~0 := main_#t~nondet24;havoc main_#t~nondet24;~mode1~0 := main_#t~nondet25;havoc main_#t~nondet25;~newmax1~0 := main_#t~nondet26;havoc main_#t~nondet26;~id2~0 := main_#t~nondet27;havoc main_#t~nondet27;~r2~0 := main_#t~nondet28;havoc main_#t~nondet28;~st2~0 := main_#t~nondet29;havoc main_#t~nondet29;~nl2~0 := main_#t~nondet30;havoc main_#t~nondet30;~m2~0 := main_#t~nondet31;havoc main_#t~nondet31;~max2~0 := main_#t~nondet32;havoc main_#t~nondet32;~mode2~0 := main_#t~nondet33;havoc main_#t~nondet33;~newmax2~0 := main_#t~nondet34;havoc main_#t~nondet34;~id3~0 := main_#t~nondet35;havoc main_#t~nondet35;~r3~0 := main_#t~nondet36;havoc main_#t~nondet36;~st3~0 := main_#t~nondet37;havoc main_#t~nondet37;~nl3~0 := main_#t~nondet38;havoc main_#t~nondet38;~m3~0 := main_#t~nondet39;havoc main_#t~nondet39;~max3~0 := main_#t~nondet40;havoc main_#t~nondet40;~mode3~0 := main_#t~nondet41;havoc main_#t~nondet41;~newmax3~0 := main_#t~nondet42;havoc main_#t~nondet42;havoc init_#res;havoc init_~r121~0, init_~r131~0, init_~r211~0, init_~r231~0, init_~r311~0, init_~r321~0, init_~r122~0, init_~tmp~0, init_~r132~0, init_~tmp___0~0, init_~r212~0, init_~tmp___1~0, init_~r232~0, init_~tmp___2~0, init_~r312~0, init_~tmp___3~0, init_~r322~0, init_~tmp___4~0, init_~tmp___5~0;havoc init_~r121~0;havoc init_~r131~0;havoc init_~r211~0;havoc init_~r231~0;havoc init_~r311~0;havoc init_~r321~0;havoc init_~r122~0;havoc init_~tmp~0;havoc init_~r132~0;havoc init_~tmp___0~0;havoc init_~r212~0;havoc init_~tmp___1~0;havoc init_~r232~0;havoc init_~tmp___2~0;havoc init_~r312~0;havoc init_~tmp___3~0;havoc init_~r322~0;havoc init_~tmp___4~0;havoc init_~tmp___5~0;init_~r121~0 := ~ep12~0;init_~r131~0 := ~ep13~0;init_~r211~0 := ~ep21~0;init_~r231~0 := ~ep23~0;init_~r311~0 := ~ep31~0;init_~r321~0 := ~ep32~0; 679#L255 assume 0 != init_~r121~0 % 256;init_~tmp~0 := 1; 662#L258-1 init_~r122~0 := (if 0 == init_~tmp~0 then 0 else 1); 663#L268 assume 0 != init_~r131~0 % 256;init_~tmp___0~0 := 1; 687#L271-1 init_~r132~0 := (if 0 == init_~tmp___0~0 then 0 else 1); 668#L281 assume 0 != init_~r211~0 % 256;init_~tmp___1~0 := 1; 669#L284-1 init_~r212~0 := (if 0 == init_~tmp___1~0 then 0 else 1); 722#L294 assume 0 != init_~r231~0 % 256;init_~tmp___2~0 := 1; 702#L297-1 init_~r232~0 := (if 0 == init_~tmp___2~0 then 0 else 1); 706#L307 assume 0 != init_~r311~0 % 256;init_~tmp___3~0 := 1; 724#L310-1 init_~r312~0 := (if 0 == init_~tmp___3~0 then 0 else 1); 754#L320 assume 0 != init_~r321~0 % 256;init_~tmp___4~0 := 1; 653#L323-1 init_~r322~0 := (if 0 == init_~tmp___4~0 then 0 else 1); 743#L333 assume ~id1~0 != ~id2~0; 709#L334 assume ~id1~0 != ~id3~0; 692#L335 assume ~id2~0 != ~id3~0; 693#L336 assume ~id1~0 >= 0; 753#L337 assume ~id2~0 >= 0; 725#L338 assume ~id3~0 >= 0; 726#L339 assume 0 == ~r1~0; 773#L340 assume 0 == ~r2~0; 762#L341 assume 0 == ~r3~0; 710#L342 assume ~max1~0 == ~id1~0; 711#L343 assume ~max2~0 == ~id2~0; 703#L344 assume ~max3~0 == ~id3~0; 704#L345 assume 0 == ~st1~0; 719#L346 assume 0 == ~st2~0; 720#L347 assume 0 == ~st3~0; 777#L348 assume 0 == ~nl1~0; 757#L349 assume 0 == ~nl2~0; 758#L350 assume 0 == ~nl3~0; 746#L351 assume 0 == ~mode1~0 % 256; 747#L352 assume 0 == ~mode2~0 % 256; 769#L353 assume 0 == ~mode3~0 % 256; 738#L354 assume 0 != ~newmax1~0 % 256; 712#L355 assume 0 != ~newmax2~0 % 256; 713#L356 assume 0 != ~newmax3~0 % 256;init_~tmp___5~0 := 1; 760#L333-1 init_#res := init_~tmp___5~0; 675#L430 main_#t~ret43 := init_#res;main_~i2~0 := main_#t~ret43;havoc main_#t~ret43; 676#L527 assume !(0 == main_~i2~0); 767#L527-2 ~p12_old~0 := ~nomsg~0;~p12_new~0 := ~nomsg~0;~p13_old~0 := ~nomsg~0;~p13_new~0 := ~nomsg~0;~p21_old~0 := ~nomsg~0;~p21_new~0 := ~nomsg~0;~p23_old~0 := ~nomsg~0;~p23_new~0 := ~nomsg~0;~p31_old~0 := ~nomsg~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~nomsg~0;~p32_new~0 := ~nomsg~0;main_~i2~0 := 0; 677#L541-2 [2021-10-13 01:21:49,251 INFO L793 eck$LassoCheckResult]: Loop: 677#L541-2 assume !!(main_~i2~0 < 6);havoc node1_#t~ite7, node1_#t~ite8, node1_~newmax~0;havoc node1_~newmax~0;node1_~newmax~0 := 0; 678#L79 assume !(0 != ~mode1~0 % 256); 731#L107 assume !(~r1~0 < 2); 728#L107-1 ~mode1~0 := 1; 674#L79-2 havoc node2_#t~ite9, node2_#t~ite10, node2_~newmax~1;havoc node2_~newmax~1;node2_~newmax~1 := 0; 714#L130 assume !(0 != ~mode2~0 % 256); 671#L158 assume !(~r2~0 < 2); 666#L158-1 ~mode2~0 := 1; 734#L130-2 havoc node3_#t~ite11, node3_#t~ite12, node3_~newmax~2;havoc node3_~newmax~2;node3_~newmax~2 := 0; 735#L181 assume !(0 != ~mode3~0 % 256); 768#L209 assume !(~r3~0 < 2); 699#L209-1 ~mode3~0 := 1; 682#L181-2 ~p12_old~0 := ~p12_new~0;~p12_new~0 := ~nomsg~0;~p13_old~0 := ~p13_new~0;~p13_new~0 := ~nomsg~0;~p21_old~0 := ~p21_new~0;~p21_new~0 := ~nomsg~0;~p23_old~0 := ~p23_new~0;~p23_new~0 := ~nomsg~0;~p31_old~0 := ~p31_new~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~p32_new~0;~p32_new~0 := ~nomsg~0;havoc check_#res;havoc check_~tmp~1;havoc check_~tmp~1; 721#L438 assume ~st1~0 + ~st2~0 + ~st3~0 <= 1; 736#L439 assume ~st1~0 + ~nl1~0 <= 1; 737#L440 assume ~st2~0 + ~nl2~0 <= 1; 685#L441 assume ~st3~0 + ~nl3~0 <= 1; 686#L442 assume ~r1~0 >= 2; 694#L446 assume ~r1~0 < 2; 766#L451 assume ~r1~0 >= 2; 650#L456 assume ~r1~0 < 2;check_~tmp~1 := 1; 717#L438-1 check_#res := check_~tmp~1; 718#L486 main_#t~ret44 := check_#res;main_~c1~0 := main_#t~ret44;havoc main_#t~ret44;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 770#L571 assume !(0 == assert_~arg % 256); 776#L566 main_#t~post45 := main_~i2~0;main_~i2~0 := 1 + main_#t~post45;havoc main_#t~post45; 677#L541-2 [2021-10-13 01:21:49,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:21:49,252 INFO L82 PathProgramCache]: Analyzing trace with hash -2116426971, now seen corresponding path program 1 times [2021-10-13 01:21:49,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:21:49,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822121208] [2021-10-13 01:21:49,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:21:49,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:21:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:21:49,354 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:21:49,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:21:49,453 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:21:49,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:21:49,455 INFO L82 PathProgramCache]: Analyzing trace with hash 630711638, now seen corresponding path program 2 times [2021-10-13 01:21:49,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:21:49,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171304553] [2021-10-13 01:21:49,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:21:49,456 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:21:49,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:21:49,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:21:49,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:21:49,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171304553] [2021-10-13 01:21:49,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171304553] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:21:49,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:21:49,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:21:49,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978865778] [2021-10-13 01:21:49,521 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 01:21:49,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:21:49,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:21:49,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:21:49,522 INFO L87 Difference]: Start difference. First operand 131 states and 195 transitions. cyclomatic complexity: 65 Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2021-10-13 01:21:49,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:21:49,573 INFO L93 Difference]: Finished difference Result 189 states and 282 transitions. [2021-10-13 01:21:49,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:21:49,573 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 189 states and 282 transitions. [2021-10-13 01:21:49,576 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 135 [2021-10-13 01:21:49,579 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 189 states to 189 states and 282 transitions. [2021-10-13 01:21:49,579 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 189 [2021-10-13 01:21:49,580 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 189 [2021-10-13 01:21:49,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 189 states and 282 transitions. [2021-10-13 01:21:49,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 01:21:49,583 INFO L681 BuchiCegarLoop]: Abstraction has 189 states and 282 transitions. [2021-10-13 01:21:49,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states and 282 transitions. [2021-10-13 01:21:49,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2021-10-13 01:21:49,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 189 states have (on average 1.492063492063492) internal successors, (282), 188 states have internal predecessors, (282), 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) [2021-10-13 01:21:49,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 282 transitions. [2021-10-13 01:21:49,611 INFO L704 BuchiCegarLoop]: Abstraction has 189 states and 282 transitions. [2021-10-13 01:21:49,611 INFO L587 BuchiCegarLoop]: Abstraction has 189 states and 282 transitions. [2021-10-13 01:21:49,611 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-13 01:21:49,612 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 189 states and 282 transitions. [2021-10-13 01:21:49,614 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 135 [2021-10-13 01:21:49,614 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:21:49,614 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:21:49,619 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, 1, 1, 1, 1, 1] [2021-10-13 01:21:49,619 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] [2021-10-13 01:21:49,620 INFO L791 eck$LassoCheckResult]: Stem: 1111#ULTIMATE.startENTRY #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(43);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~nomsg~0 := -1;~p12~0 := 0;~p12_old~0 := 0;~p12_new~0 := 0;~ep12~0 := 0;~p13~0 := 0;~p13_old~0 := 0;~p13_new~0 := 0;~ep13~0 := 0;~p21~0 := 0;~p21_old~0 := 0;~p21_new~0 := 0;~ep21~0 := 0;~p23~0 := 0;~p23_old~0 := 0;~p23_new~0 := 0;~ep23~0 := 0;~p31~0 := 0;~p31_old~0 := 0;~p31_new~0 := 0;~ep31~0 := 0;~p32~0 := 0;~p32_old~0 := 0;~p32_new~0 := 0;~ep32~0 := 0;~id1~0 := 0;~r1~0 := 0;~st1~0 := 0;~nl1~0 := 0;~m1~0 := 0;~max1~0 := 0;~mode1~0 := 0;~newmax1~0 := 0;~id2~0 := 0;~r2~0 := 0;~st2~0 := 0;~nl2~0 := 0;~m2~0 := 0;~max2~0 := 0;~mode2~0 := 0;~newmax2~0 := 0;~id3~0 := 0;~r3~0 := 0;~st3~0 := 0;~nl3~0 := 0;~m3~0 := 0;~max3~0 := 0;~mode3~0 := 0;~newmax3~0 := 0; 1042#L-1 havoc main_#res;havoc main_#t~nondet13, main_#t~nondet14, main_#t~nondet15, main_#t~nondet16, main_#t~nondet17, main_#t~nondet18, main_#t~nondet19, main_#t~nondet20, main_#t~nondet21, main_#t~nondet22, main_#t~nondet23, main_#t~nondet24, main_#t~nondet25, main_#t~nondet26, main_#t~nondet27, main_#t~nondet28, main_#t~nondet29, main_#t~nondet30, main_#t~nondet31, main_#t~nondet32, main_#t~nondet33, main_#t~nondet34, main_#t~nondet35, main_#t~nondet36, main_#t~nondet37, main_#t~nondet38, main_#t~nondet39, main_#t~nondet40, main_#t~nondet41, main_#t~nondet42, main_#t~ret43, main_#t~ret44, main_#t~post45, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~ep12~0 := main_#t~nondet13;havoc main_#t~nondet13;~ep13~0 := main_#t~nondet14;havoc main_#t~nondet14;~ep21~0 := main_#t~nondet15;havoc main_#t~nondet15;~ep23~0 := main_#t~nondet16;havoc main_#t~nondet16;~ep31~0 := main_#t~nondet17;havoc main_#t~nondet17;~ep32~0 := main_#t~nondet18;havoc main_#t~nondet18;~id1~0 := main_#t~nondet19;havoc main_#t~nondet19;~r1~0 := main_#t~nondet20;havoc main_#t~nondet20;~st1~0 := main_#t~nondet21;havoc main_#t~nondet21;~nl1~0 := main_#t~nondet22;havoc main_#t~nondet22;~m1~0 := main_#t~nondet23;havoc main_#t~nondet23;~max1~0 := main_#t~nondet24;havoc main_#t~nondet24;~mode1~0 := main_#t~nondet25;havoc main_#t~nondet25;~newmax1~0 := main_#t~nondet26;havoc main_#t~nondet26;~id2~0 := main_#t~nondet27;havoc main_#t~nondet27;~r2~0 := main_#t~nondet28;havoc main_#t~nondet28;~st2~0 := main_#t~nondet29;havoc main_#t~nondet29;~nl2~0 := main_#t~nondet30;havoc main_#t~nondet30;~m2~0 := main_#t~nondet31;havoc main_#t~nondet31;~max2~0 := main_#t~nondet32;havoc main_#t~nondet32;~mode2~0 := main_#t~nondet33;havoc main_#t~nondet33;~newmax2~0 := main_#t~nondet34;havoc main_#t~nondet34;~id3~0 := main_#t~nondet35;havoc main_#t~nondet35;~r3~0 := main_#t~nondet36;havoc main_#t~nondet36;~st3~0 := main_#t~nondet37;havoc main_#t~nondet37;~nl3~0 := main_#t~nondet38;havoc main_#t~nondet38;~m3~0 := main_#t~nondet39;havoc main_#t~nondet39;~max3~0 := main_#t~nondet40;havoc main_#t~nondet40;~mode3~0 := main_#t~nondet41;havoc main_#t~nondet41;~newmax3~0 := main_#t~nondet42;havoc main_#t~nondet42;havoc init_#res;havoc init_~r121~0, init_~r131~0, init_~r211~0, init_~r231~0, init_~r311~0, init_~r321~0, init_~r122~0, init_~tmp~0, init_~r132~0, init_~tmp___0~0, init_~r212~0, init_~tmp___1~0, init_~r232~0, init_~tmp___2~0, init_~r312~0, init_~tmp___3~0, init_~r322~0, init_~tmp___4~0, init_~tmp___5~0;havoc init_~r121~0;havoc init_~r131~0;havoc init_~r211~0;havoc init_~r231~0;havoc init_~r311~0;havoc init_~r321~0;havoc init_~r122~0;havoc init_~tmp~0;havoc init_~r132~0;havoc init_~tmp___0~0;havoc init_~r212~0;havoc init_~tmp___1~0;havoc init_~r232~0;havoc init_~tmp___2~0;havoc init_~r312~0;havoc init_~tmp___3~0;havoc init_~r322~0;havoc init_~tmp___4~0;havoc init_~tmp___5~0;init_~r121~0 := ~ep12~0;init_~r131~0 := ~ep13~0;init_~r211~0 := ~ep21~0;init_~r231~0 := ~ep23~0;init_~r311~0 := ~ep31~0;init_~r321~0 := ~ep32~0; 1005#L255 assume 0 != init_~r121~0 % 256;init_~tmp~0 := 1; 988#L258-1 init_~r122~0 := (if 0 == init_~tmp~0 then 0 else 1); 989#L268 assume 0 != init_~r131~0 % 256;init_~tmp___0~0 := 1; 1009#L271-1 init_~r132~0 := (if 0 == init_~tmp___0~0 then 0 else 1); 994#L281 assume 0 != init_~r211~0 % 256;init_~tmp___1~0 := 1; 995#L284-1 init_~r212~0 := (if 0 == init_~tmp___1~0 then 0 else 1); 1049#L294 assume 0 != init_~r231~0 % 256;init_~tmp___2~0 := 1; 1027#L297-1 init_~r232~0 := (if 0 == init_~tmp___2~0 then 0 else 1); 1031#L307 assume 0 != init_~r311~0 % 256;init_~tmp___3~0 := 1; 1051#L310-1 init_~r312~0 := (if 0 == init_~tmp___3~0 then 0 else 1); 1082#L320 assume 0 != init_~r321~0 % 256;init_~tmp___4~0 := 1; 977#L323-1 init_~r322~0 := (if 0 == init_~tmp___4~0 then 0 else 1); 1070#L333 assume ~id1~0 != ~id2~0; 1034#L334 assume ~id1~0 != ~id3~0; 1018#L335 assume ~id2~0 != ~id3~0; 1019#L336 assume ~id1~0 >= 0; 1081#L337 assume ~id2~0 >= 0; 1052#L338 assume ~id3~0 >= 0; 1053#L339 assume 0 == ~r1~0; 1102#L340 assume 0 == ~r2~0; 1090#L341 assume 0 == ~r3~0; 1035#L342 assume ~max1~0 == ~id1~0; 1036#L343 assume ~max2~0 == ~id2~0; 1028#L344 assume ~max3~0 == ~id3~0; 1029#L345 assume 0 == ~st1~0; 1046#L346 assume 0 == ~st2~0; 1047#L347 assume 0 == ~st3~0; 1108#L348 assume 0 == ~nl1~0; 1085#L349 assume 0 == ~nl2~0; 1086#L350 assume 0 == ~nl3~0; 1073#L351 assume 0 == ~mode1~0 % 256; 1074#L352 assume 0 == ~mode2~0 % 256; 1097#L353 assume 0 == ~mode3~0 % 256; 1065#L354 assume 0 != ~newmax1~0 % 256; 1037#L355 assume 0 != ~newmax2~0 % 256; 1038#L356 assume 0 != ~newmax3~0 % 256;init_~tmp___5~0 := 1; 1088#L333-1 init_#res := init_~tmp___5~0; 999#L430 main_#t~ret43 := init_#res;main_~i2~0 := main_#t~ret43;havoc main_#t~ret43; 1000#L527 assume !(0 == main_~i2~0); 1093#L527-2 ~p12_old~0 := ~nomsg~0;~p12_new~0 := ~nomsg~0;~p13_old~0 := ~nomsg~0;~p13_new~0 := ~nomsg~0;~p21_old~0 := ~nomsg~0;~p21_new~0 := ~nomsg~0;~p23_old~0 := ~nomsg~0;~p23_new~0 := ~nomsg~0;~p31_old~0 := ~nomsg~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~nomsg~0;~p32_new~0 := ~nomsg~0;main_~i2~0 := 0; 1109#L541-2 [2021-10-13 01:21:49,620 INFO L793 eck$LassoCheckResult]: Loop: 1109#L541-2 assume !!(main_~i2~0 < 6);havoc node1_#t~ite7, node1_#t~ite8, node1_~newmax~0;havoc node1_~newmax~0;node1_~newmax~0 := 0; 1159#L79 assume !(0 != ~mode1~0 % 256); 1158#L107 assume ~r1~0 < 2; 1015#L108 assume !(0 != ~ep12~0 % 256); 1016#L108-1 assume !(0 != ~ep13~0 % 256); 1055#L107-1 ~mode1~0 := 1; 1152#L79-2 havoc node2_#t~ite9, node2_#t~ite10, node2_~newmax~1;havoc node2_~newmax~1;node2_~newmax~1 := 0; 1151#L130 assume !(0 != ~mode2~0 % 256); 1137#L158 assume !(~r2~0 < 2); 1133#L158-1 ~mode2~0 := 1; 1132#L130-2 havoc node3_#t~ite11, node3_#t~ite12, node3_~newmax~2;havoc node3_~newmax~2;node3_~newmax~2 := 0; 1127#L181 assume !(0 != ~mode3~0 % 256); 1125#L209 assume !(~r3~0 < 2); 1120#L209-1 ~mode3~0 := 1; 1119#L181-2 ~p12_old~0 := ~p12_new~0;~p12_new~0 := ~nomsg~0;~p13_old~0 := ~p13_new~0;~p13_new~0 := ~nomsg~0;~p21_old~0 := ~p21_new~0;~p21_new~0 := ~nomsg~0;~p23_old~0 := ~p23_new~0;~p23_new~0 := ~nomsg~0;~p31_old~0 := ~p31_new~0;~p31_new~0 := ~nomsg~0;~p32_old~0 := ~p32_new~0;~p32_new~0 := ~nomsg~0;havoc check_#res;havoc check_~tmp~1;havoc check_~tmp~1; 1118#L438 assume ~st1~0 + ~st2~0 + ~st3~0 <= 1; 1117#L439 assume ~st1~0 + ~nl1~0 <= 1; 1116#L440 assume ~st2~0 + ~nl2~0 <= 1; 1115#L441 assume ~st3~0 + ~nl3~0 <= 1; 1114#L442 assume !(~r1~0 >= 2); 1040#L445 assume 0 == ~st1~0 + ~st2~0 + ~st3~0; 1041#L446 assume ~r1~0 < 2; 1113#L451 assume !(~r1~0 >= 2); 978#L455 assume 0 == ~nl1~0 + ~nl2~0 + ~nl3~0; 979#L456 assume ~r1~0 < 2;check_~tmp~1 := 1; 1163#L438-1 check_#res := check_~tmp~1; 1162#L486 main_#t~ret44 := check_#res;main_~c1~0 := main_#t~ret44;havoc main_#t~ret44;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 1161#L571 assume !(0 == assert_~arg % 256); 1160#L566 main_#t~post45 := main_~i2~0;main_~i2~0 := 1 + main_#t~post45;havoc main_#t~post45; 1109#L541-2 [2021-10-13 01:21:49,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:21:49,621 INFO L82 PathProgramCache]: Analyzing trace with hash -2116426971, now seen corresponding path program 2 times [2021-10-13 01:21:49,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:21:49,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744092012] [2021-10-13 01:21:49,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:21:49,624 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:21:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:21:49,712 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:21:49,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:21:49,795 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:21:49,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:21:49,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1466264639, now seen corresponding path program 1 times [2021-10-13 01:21:49,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:21:49,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762666607] [2021-10-13 01:21:49,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:21:49,797 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:21:49,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:21:49,811 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:21:49,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:21:49,841 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:21:49,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:21:49,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1977070365, now seen corresponding path program 1 times [2021-10-13 01:21:49,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:21:49,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766010054] [2021-10-13 01:21:49,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:21:49,843 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:21:49,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:21:49,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:21:49,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:21:49,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766010054] [2021-10-13 01:21:49,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766010054] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:21:49,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:21:49,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:21:49,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643563301] [2021-10-13 01:21:50,885 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:21:50,886 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:21:50,886 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:21:50,886 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:21:50,886 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 01:21:50,887 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:21:50,887 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:21:50,887 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:21:50,887 INFO L133 ssoRankerPreferences]: Filename of dumped script: pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c_Iteration4_Loop [2021-10-13 01:21:50,887 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:21:50,887 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:21:50,911 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:50,918 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:50,923 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:50,934 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:50,938 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:50,940 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:50,942 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:50,948 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:50,951 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:50,954 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:50,957 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:50,959 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:50,964 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:50,967 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:50,973 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:50,976 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:50,982 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:50,985 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:51,012 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:51,019 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:51,022 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:51,025 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:51,028 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:51,030 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:51,489 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:21:51,490 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 01:21:51,491 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:21:51,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:21:51,492 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:21:51,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-13 01:21:51,500 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:21:51,500 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:21:51,524 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 01:21:51,524 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {~ep12~0=0} Honda state: {~ep12~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 01:21:51,552 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-10-13 01:21:51,553 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:21:51,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:21:51,554 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:21:51,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-13 01:21:51,559 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:21:51,560 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:21:51,595 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2021-10-13 01:21:51,596 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:21:51,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:21:51,597 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:21:51,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-13 01:21:51,600 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 01:21:51,600 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:21:51,720 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 01:21:51,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-13 01:21:51,724 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:21:51,724 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:21:51,724 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:21:51,724 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:21:51,724 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 01:21:51,724 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:21:51,724 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:21:51,725 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:21:51,725 INFO L133 ssoRankerPreferences]: Filename of dumped script: pals_opt-floodmax.3.1.ufo.BOUNDED-6.pals.c_Iteration4_Loop [2021-10-13 01:21:51,725 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:21:51,725 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:21:51,729 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:51,737 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:51,752 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:51,763 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:51,766 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:51,769 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:51,771 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:51,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:51,780 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:51,783 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:51,786 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:51,791 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:51,794 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:51,800 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:51,810 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:51,817 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:51,833 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:51,836 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:51,848 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:51,854 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:51,856 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:51,859 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:51,862 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:51,865 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:21:52,419 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:21:52,424 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 01:21:52,426 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:21:52,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:21:52,427 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:21:52,434 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 [2021-10-13 01:21:52,445 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:21:52,445 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:21:52,446 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:21:52,446 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:21:52,446 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:21:52,449 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:21:52,449 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:21:52,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-13 01:21:52,464 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:21:52,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-13 01:21:52,500 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:21:52,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:21:52,502 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:21:52,512 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 [2021-10-13 01:21:52,521 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:21:52,521 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:21:52,521 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:21:52,522 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:21:52,522 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:21:52,523 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:21:52,524 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:21:52,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-13 01:21:52,547 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:21:52,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-13 01:21:52,584 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:21:52,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:21:52,586 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:21:52,591 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 [2021-10-13 01:21:52,601 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:21:52,601 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:21:52,602 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:21:52,602 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:21:52,602 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:21:52,604 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:21:52,604 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:21:52,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-13 01:21:52,614 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:21:52,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-13 01:21:52,650 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:21:52,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:21:52,651 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:21:52,660 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 [2021-10-13 01:21:52,669 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:21:52,669 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:21:52,669 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:21:52,670 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:21:52,670 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:21:52,671 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:21:52,671 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:21:52,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-13 01:21:52,695 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:21:52,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-13 01:21:52,736 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:21:52,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:21:52,737 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:21:52,744 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 [2021-10-13 01:21:52,755 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:21:52,755 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:21:52,755 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:21:52,755 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:21:52,755 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:21:52,756 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:21:52,756 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:21:52,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-13 01:21:52,779 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:21:52,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-13 01:21:52,817 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:21:52,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:21:52,818 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:21:52,824 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 [2021-10-13 01:21:52,833 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:21:52,833 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:21:52,833 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:21:52,833 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:21:52,833 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:21:52,834 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:21:52,834 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:21:52,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-13 01:21:52,851 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:21:52,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-13 01:21:52,886 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:21:52,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:21:52,887 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:21:52,893 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 [2021-10-13 01:21:52,902 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:21:52,902 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:21:52,902 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:21:52,902 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:21:52,903 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:21:52,904 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:21:52,904 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:21:52,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-13 01:21:52,919 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:21:52,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-13 01:21:52,955 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:21:52,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:21:52,957 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:21:52,959 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 [2021-10-13 01:21:52,968 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:21:52,968 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:21:52,968 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:21:52,968 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:21:52,968 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:21:52,969 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:21:52,969 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:21:52,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-13 01:21:52,991 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:21:53,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2021-10-13 01:21:53,010 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:21:53,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:21:53,011 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:21:53,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-13 01:21:53,019 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 [2021-10-13 01:21:53,026 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:21:53,026 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:21:53,026 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:21:53,027 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:21:53,027 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:21:53,027 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:21:53,028 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:21:53,042 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:21:53,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-13 01:21:53,065 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:21:53,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:21:53,066 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:21:53,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-13 01:21:53,079 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 [2021-10-13 01:21:53,086 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:21:53,086 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:21:53,086 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:21:53,086 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:21:53,087 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:21:53,087 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:21:53,087 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:21:53,101 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:21:53,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-13 01:21:53,122 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:21:53,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:21:53,123 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:21:53,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-13 01:21:53,132 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 [2021-10-13 01:21:53,139 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:21:53,139 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:21:53,139 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:21:53,139 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:21:53,139 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:21:53,140 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:21:53,140 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:21:53,143 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 01:21:53,147 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 01:21:53,147 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-13 01:21:53,148 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:21:53,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:21:53,157 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:21:53,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-13 01:21:53,166 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 01:21:53,167 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 01:21:53,168 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 01:21:53,168 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i2~0) = -2*ULTIMATE.start_main_~i2~0 + 11 Supporting invariants [] [2021-10-13 01:21:53,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-13 01:21:53,203 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 01:21:53,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:21:53,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:21:53,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:21:53,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:21:53,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:21:53,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 01:21:53,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:21:53,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:21:53,734 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 [2021-10-13 01:21:53,734 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 189 states and 282 transitions. cyclomatic complexity: 94 Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2021-10-13 01:21:53,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-13 01:21:53,813 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 189 states and 282 transitions. cyclomatic complexity: 94. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 323 states and 492 transitions. Complement of second has 4 states. [2021-10-13 01:21:53,814 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 [2021-10-13 01:21:53,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2021-10-13 01:21:53,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 195 transitions. [2021-10-13 01:21:53,816 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 195 transitions. Stem has 42 letters. Loop has 29 letters. [2021-10-13 01:21:53,817 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:21:53,817 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 195 transitions. Stem has 71 letters. Loop has 29 letters. [2021-10-13 01:21:53,820 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:21:53,820 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 195 transitions. Stem has 42 letters. Loop has 58 letters. [2021-10-13 01:21:53,823 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:21:53,824 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 323 states and 492 transitions. [2021-10-13 01:21:53,827 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-13 01:21:53,827 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 323 states to 0 states and 0 transitions. [2021-10-13 01:21:53,827 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-13 01:21:53,827 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-13 01:21:53,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-13 01:21:53,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 01:21:53,827 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 01:21:53,828 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 01:21:53,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:21:53,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:21:53,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:21:53,829 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2021-10-13 01:21:53,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:21:53,829 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-10-13 01:21:53,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 01:21:53,829 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-10-13 01:21:53,829 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-13 01:21:53,829 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 01:21:53,829 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-13 01:21:53,829 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-13 01:21:53,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-13 01:21:53,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 01:21:53,830 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 01:21:53,830 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 01:21:53,830 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 01:21:53,830 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-13 01:21:53,830 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-13 01:21:53,830 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-13 01:21:53,830 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-13 01:21:53,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.10 01:21:53 BoogieIcfgContainer [2021-10-13 01:21:53,836 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-13 01:21:53,836 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 01:21:53,836 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 01:21:53,836 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 01:21:53,837 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:21:48" (3/4) ... [2021-10-13 01:21:53,839 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 01:21:53,839 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 01:21:53,841 INFO L168 Benchmark]: Toolchain (without parser) took 7523.68 ms. Allocated memory was 92.3 MB in the beginning and 169.9 MB in the end (delta: 77.6 MB). Free memory was 57.0 MB in the beginning and 129.2 MB in the end (delta: -72.1 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:21:53,842 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 92.3 MB. Free memory was 62.4 MB in the beginning and 62.4 MB in the end (delta: 21.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:21:53,843 INFO L168 Benchmark]: CACSL2BoogieTranslator took 492.63 ms. Allocated memory was 92.3 MB in the beginning and 121.6 MB in the end (delta: 29.4 MB). Free memory was 56.8 MB in the beginning and 91.6 MB in the end (delta: -34.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 01:21:53,843 INFO L168 Benchmark]: Boogie Procedure Inliner took 101.54 ms. Allocated memory is still 121.6 MB. Free memory was 91.6 MB in the beginning and 88.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:21:53,848 INFO L168 Benchmark]: Boogie Preprocessor took 79.95 ms. Allocated memory is still 121.6 MB. Free memory was 88.8 MB in the beginning and 85.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 01:21:53,850 INFO L168 Benchmark]: RCFGBuilder took 1018.71 ms. Allocated memory is still 121.6 MB. Free memory was 85.9 MB in the beginning and 62.2 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:21:53,851 INFO L168 Benchmark]: BuchiAutomizer took 5820.67 ms. Allocated memory was 121.6 MB in the beginning and 169.9 MB in the end (delta: 48.2 MB). Free memory was 62.2 MB in the beginning and 129.2 MB in the end (delta: -67.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:21:53,852 INFO L168 Benchmark]: Witness Printer took 3.31 ms. Allocated memory is still 169.9 MB. Free memory is still 129.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:21:53,854 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 92.3 MB. Free memory was 62.4 MB in the beginning and 62.4 MB in the end (delta: 21.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 492.63 ms. Allocated memory was 92.3 MB in the beginning and 121.6 MB in the end (delta: 29.4 MB). Free memory was 56.8 MB in the beginning and 91.6 MB in the end (delta: -34.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 101.54 ms. Allocated memory is still 121.6 MB. Free memory was 91.6 MB in the beginning and 88.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 79.95 ms. Allocated memory is still 121.6 MB. Free memory was 88.8 MB in the beginning and 85.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1018.71 ms. Allocated memory is still 121.6 MB. Free memory was 85.9 MB in the beginning and 62.2 MB in the end (delta: 23.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 5820.67 ms. Allocated memory was 121.6 MB in the beginning and 169.9 MB in the end (delta: 48.2 MB). Free memory was 62.2 MB in the beginning and 129.2 MB in the end (delta: -67.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 3.31 ms. Allocated memory is still 169.9 MB. Free memory is still 129.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * 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 -2 * i2 + 11 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 5.7s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 4.5s. Construction of modules took 0.1s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 5. Minimization of nondet autom 0. Automata minimization 74.9ms AutomataMinimizationTime, 3 MinimizatonAttempts, 77 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 189 states and ocurred in iteration 3. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 831 SDtfs, 397 SDslu, 1589 SDs, 0 SdLazy, 54 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 133.5ms Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT0 conc0 concLT1 SILN0 SILU0 SILI2 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital140 mio100 ax100 hnf100 lsp27 ukn100 mio100 lsp100 div123 bol100 ite100 ukn100 eq182 hnf86 smp100 dnf100 smp100 tf102 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 38ms VariablesStem: 0 VariablesLoop: 3 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-13 01:21:53,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_900c1846-d8b7-4333-9b53-3c8854329f68/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...