./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.3.1.ufo.BOUNDED-6.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6326e1bf-d297-41da-aeae-72beb9d1ada8/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6326e1bf-d297-41da-aeae-72beb9d1ada8/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6326e1bf-d297-41da-aeae-72beb9d1ada8/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6326e1bf-d297-41da-aeae-72beb9d1ada8/bin/uautomizer-Z5i5R5N3CC/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.3.1.ufo.BOUNDED-6.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6326e1bf-d297-41da-aeae-72beb9d1ada8/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6326e1bf-d297-41da-aeae-72beb9d1ada8/bin/uautomizer-Z5i5R5N3CC --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 afa37805b5dd75e7d693edd5075ed8bd4a944c21 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:26:39,201 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:26:39,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:26:39,251 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:26:39,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:26:39,256 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:26:39,259 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:26:39,263 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:26:39,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:26:39,271 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:26:39,272 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:26:39,273 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:26:39,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:26:39,277 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:26:39,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:26:39,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:26:39,282 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:26:39,286 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:26:39,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:26:39,298 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:26:39,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:26:39,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:26:39,304 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:26:39,305 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:26:39,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:26:39,314 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:26:39,314 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:26:39,316 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:26:39,317 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:26:39,318 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:26:39,318 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:26:39,319 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:26:39,321 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:26:39,322 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:26:39,324 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:26:39,324 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:26:39,325 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:26:39,325 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:26:39,325 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:26:39,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:26:39,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:26:39,329 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6326e1bf-d297-41da-aeae-72beb9d1ada8/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-11 00:26:39,371 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:26:39,372 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:26:39,373 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:26:39,379 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:26:39,380 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:26:39,380 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-11 00:26:39,380 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-11 00:26:39,380 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-11 00:26:39,381 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-11 00:26:39,381 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-11 00:26:39,382 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-11 00:26:39,382 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:26:39,382 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:26:39,383 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 00:26:39,383 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:26:39,383 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:26:39,383 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:26:39,383 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-11 00:26:39,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-11 00:26:39,384 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-11 00:26:39,384 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:26:39,384 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:26:39,384 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-11 00:26:39,384 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:26:39,385 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-11 00:26:39,385 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:26:39,385 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:26:39,385 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:26:39,386 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:26:39,387 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:26:39,388 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-11 00:26:39,389 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_6326e1bf-d297-41da-aeae-72beb9d1ada8/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6326e1bf-d297-41da-aeae-72beb9d1ada8/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> afa37805b5dd75e7d693edd5075ed8bd4a944c21 [2021-10-11 00:26:39,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:26:39,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:26:39,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:26:39,680 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:26:39,696 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:26:39,697 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6326e1bf-d297-41da-aeae-72beb9d1ada8/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/seq-mthreaded/pals_lcr.3.1.ufo.BOUNDED-6.pals.c [2021-10-11 00:26:39,800 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6326e1bf-d297-41da-aeae-72beb9d1ada8/bin/uautomizer-Z5i5R5N3CC/data/a7e936105/0ccfccefd07c4184b939efa5a3ca3a67/FLAGa0f3a0bca [2021-10-11 00:26:40,208 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:26:40,209 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6326e1bf-d297-41da-aeae-72beb9d1ada8/sv-benchmarks/c/seq-mthreaded/pals_lcr.3.1.ufo.BOUNDED-6.pals.c [2021-10-11 00:26:40,226 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6326e1bf-d297-41da-aeae-72beb9d1ada8/bin/uautomizer-Z5i5R5N3CC/data/a7e936105/0ccfccefd07c4184b939efa5a3ca3a67/FLAGa0f3a0bca [2021-10-11 00:26:40,735 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6326e1bf-d297-41da-aeae-72beb9d1ada8/bin/uautomizer-Z5i5R5N3CC/data/a7e936105/0ccfccefd07c4184b939efa5a3ca3a67 [2021-10-11 00:26:40,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:26:40,738 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:26:40,740 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:26:40,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:26:40,745 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:26:40,746 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:26:40" (1/1) ... [2021-10-11 00:26:40,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d943257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:40, skipping insertion in model container [2021-10-11 00:26:40,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:26:40" (1/1) ... [2021-10-11 00:26:40,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:26:40,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:26:40,986 WARN L226 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_6326e1bf-d297-41da-aeae-72beb9d1ada8/sv-benchmarks/c/seq-mthreaded/pals_lcr.3.1.ufo.BOUNDED-6.pals.c[5984,5997] [2021-10-11 00:26:40,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:26:40,996 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:26:41,032 WARN L226 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_6326e1bf-d297-41da-aeae-72beb9d1ada8/sv-benchmarks/c/seq-mthreaded/pals_lcr.3.1.ufo.BOUNDED-6.pals.c[5984,5997] [2021-10-11 00:26:41,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:26:41,051 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:26:41,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:41 WrapperNode [2021-10-11 00:26:41,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:26:41,053 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:26:41,053 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:26:41,053 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:26:41,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:41" (1/1) ... [2021-10-11 00:26:41,070 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:41" (1/1) ... [2021-10-11 00:26:41,095 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:26:41,096 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:26:41,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:26:41,096 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:26:41,103 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:41" (1/1) ... [2021-10-11 00:26:41,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:41" (1/1) ... [2021-10-11 00:26:41,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:41" (1/1) ... [2021-10-11 00:26:41,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:41" (1/1) ... [2021-10-11 00:26:41,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:41" (1/1) ... [2021-10-11 00:26:41,117 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:41" (1/1) ... [2021-10-11 00:26:41,119 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:41" (1/1) ... [2021-10-11 00:26:41,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:26:41,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:26:41,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:26:41,123 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:26:41,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:41" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6326e1bf-d297-41da-aeae-72beb9d1ada8/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:26:41,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:26:41,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:26:41,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:26:41,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:26:41,768 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:26:41,769 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-10-11 00:26:41,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:26:41 BoogieIcfgContainer [2021-10-11 00:26:41,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:26:41,771 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-11 00:26:41,772 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-11 00:26:41,775 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-11 00:26:41,776 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-11 00:26:41,776 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 11.10 12:26:40" (1/3) ... [2021-10-11 00:26:41,777 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@750e5035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 11.10 12:26:41, skipping insertion in model container [2021-10-11 00:26:41,777 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-11 00:26:41,786 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:41" (2/3) ... [2021-10-11 00:26:41,805 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@750e5035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 11.10 12:26:41, skipping insertion in model container [2021-10-11 00:26:41,805 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-11 00:26:41,805 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:26:41" (3/3) ... [2021-10-11 00:26:41,807 INFO L389 chiAutomizerObserver]: Analyzing ICFG pals_lcr.3.1.ufo.BOUNDED-6.pals.c [2021-10-11 00:26:41,869 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-11 00:26:41,870 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-11 00:26:41,870 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-11 00:26:41,870 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:26:41,870 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:26:41,871 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-11 00:26:41,871 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:26:41,871 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-11 00:26:41,889 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 61 states. [2021-10-11 00:26:41,914 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 35 [2021-10-11 00:26:41,915 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:26:41,915 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:26:41,923 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:26:41,923 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:26:41,924 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-11 00:26:41,924 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 61 states. [2021-10-11 00:26:41,937 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 35 [2021-10-11 00:26:41,937 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:26:41,937 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:26:41,938 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:26:41,938 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:26:41,944 INFO L794 eck$LassoCheckResult]: Stem: 37#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(34);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0; 11#L-1true havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, 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~ret23, main_#t~ret24, main_#t~post25, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~r1~0 := main_#t~nondet10;havoc main_#t~nondet10;~id1~0 := main_#t~nondet11;havoc main_#t~nondet11;~st1~0 := main_#t~nondet12;havoc main_#t~nondet12;~send1~0 := main_#t~nondet13;havoc main_#t~nondet13;~mode1~0 := main_#t~nondet14;havoc main_#t~nondet14;~id2~0 := main_#t~nondet15;havoc main_#t~nondet15;~st2~0 := main_#t~nondet16;havoc main_#t~nondet16;~send2~0 := main_#t~nondet17;havoc main_#t~nondet17;~mode2~0 := main_#t~nondet18;havoc main_#t~nondet18;~id3~0 := main_#t~nondet19;havoc main_#t~nondet19;~st3~0 := main_#t~nondet20;havoc main_#t~nondet20;~send3~0 := main_#t~nondet21;havoc main_#t~nondet21;~mode3~0 := main_#t~nondet22;havoc main_#t~nondet22;havoc init_#res;havoc init_~tmp~0;havoc init_~tmp~0; 22#L131true assume !(0 == ~r1~0);init_~tmp~0 := 0; 19#L131-1true init_#res := init_~tmp~0; 63#L196true main_#t~ret23 := init_#res;main_~i2~0 := main_#t~ret23;havoc main_#t~ret23; 20#L248true assume !(0 == main_~i2~0); 14#L248-2true ~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;main_~i2~0 := 0; 9#L256-2true [2021-10-11 00:26:41,945 INFO L796 eck$LassoCheckResult]: Loop: 9#L256-2true assume !!(main_~i2~0 < 6);havoc node1_#t~ite7, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 15#L54true assume 0 != ~mode1~0 % 256;~r1~0 := (if (1 + ~r1~0) % 256 <= 127 then (1 + ~r1~0) % 256 else (1 + ~r1~0) % 256 - 256);node1_~m1~0 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 3#L58true assume !(node1_~m1~0 != ~nomsg~0); 25#L58-1true ~mode1~0 := 0; 59#L54-2true havoc node2_#t~ite8, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 48#L82true assume 0 != ~mode2~0 % 256;node2_~m2~0 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 50#L85true assume !(node2_~m2~0 != ~nomsg~0); 35#L85-1true ~mode2~0 := 0; 47#L82-2true havoc node3_#t~ite9, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 53#L107true assume !(0 != ~mode3~0 % 256); 21#L120true assume ~send3~0 != ~nomsg~0 && ~p3_new~0 == ~nomsg~0;node3_#t~ite9 := ~send3~0; 16#L120-2true ~p3_new~0 := (if node3_#t~ite9 % 256 <= 127 then node3_#t~ite9 % 256 else node3_#t~ite9 % 256 - 256);havoc node3_#t~ite9;~mode3~0 := 1; 34#L107-2true ~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;havoc check_#res;havoc check_~tmp~1;havoc check_~tmp~1; 17#L204true assume !(~st1~0 + ~st2~0 + ~st3~0 <= 1);check_~tmp~1 := 0; 13#L204-1true check_#res := check_~tmp~1; 52#L224true main_#t~ret24 := check_#res;main_~c1~0 := main_#t~ret24;havoc main_#t~ret24;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 62#L280true assume !(0 == assert_~arg % 256); 33#L275true main_#t~post25 := main_~i2~0;main_~i2~0 := 1 + main_#t~post25;havoc main_#t~post25; 9#L256-2true [2021-10-11 00:26:41,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:26:41,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1892699938, now seen corresponding path program 1 times [2021-10-11 00:26:41,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:26:41,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81988243] [2021-10-11 00:26:41,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:26:42,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:26:42,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:26:42,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81988243] [2021-10-11 00:26:42,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:26:42,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 00:26:42,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067287542] [2021-10-11 00:26:42,144 INFO L799 eck$LassoCheckResult]: stem already infeasible [2021-10-11 00:26:42,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:26:42,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1735879462, now seen corresponding path program 1 times [2021-10-11 00:26:42,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:26:42,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703561054] [2021-10-11 00:26:42,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:26:42,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:26:42,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:26:42,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703561054] [2021-10-11 00:26:42,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:26:42,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 00:26:42,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497466211] [2021-10-11 00:26:42,301 INFO L811 eck$LassoCheckResult]: loop already infeasible [2021-10-11 00:26:42,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:26:42,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:26:42,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:26:42,316 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 5 states. [2021-10-11 00:26:42,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:26:42,449 INFO L93 Difference]: Finished difference Result 99 states and 154 transitions. [2021-10-11 00:26:42,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 00:26:42,451 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 99 states and 154 transitions. [2021-10-11 00:26:42,456 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 34 [2021-10-11 00:26:42,461 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 99 states to 90 states and 130 transitions. [2021-10-11 00:26:42,462 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 90 [2021-10-11 00:26:42,463 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 90 [2021-10-11 00:26:42,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 130 transitions. [2021-10-11 00:26:42,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-11 00:26:42,464 INFO L692 BuchiCegarLoop]: Abstraction has 90 states and 130 transitions. [2021-10-11 00:26:42,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states and 130 transitions. [2021-10-11 00:26:42,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 56. [2021-10-11 00:26:42,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-10-11 00:26:42,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 76 transitions. [2021-10-11 00:26:42,494 INFO L715 BuchiCegarLoop]: Abstraction has 56 states and 76 transitions. [2021-10-11 00:26:42,494 INFO L595 BuchiCegarLoop]: Abstraction has 56 states and 76 transitions. [2021-10-11 00:26:42,494 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-11 00:26:42,494 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 56 states and 76 transitions. [2021-10-11 00:26:42,496 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 34 [2021-10-11 00:26:42,496 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:26:42,496 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:26:42,497 INFO L853 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] [2021-10-11 00:26:42,497 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:26:42,498 INFO L794 eck$LassoCheckResult]: Stem: 220#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(34);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0; 193#L-1 havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, 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~ret23, main_#t~ret24, main_#t~post25, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~r1~0 := main_#t~nondet10;havoc main_#t~nondet10;~id1~0 := main_#t~nondet11;havoc main_#t~nondet11;~st1~0 := main_#t~nondet12;havoc main_#t~nondet12;~send1~0 := main_#t~nondet13;havoc main_#t~nondet13;~mode1~0 := main_#t~nondet14;havoc main_#t~nondet14;~id2~0 := main_#t~nondet15;havoc main_#t~nondet15;~st2~0 := main_#t~nondet16;havoc main_#t~nondet16;~send2~0 := main_#t~nondet17;havoc main_#t~nondet17;~mode2~0 := main_#t~nondet18;havoc main_#t~nondet18;~id3~0 := main_#t~nondet19;havoc main_#t~nondet19;~st3~0 := main_#t~nondet20;havoc main_#t~nondet20;~send3~0 := main_#t~nondet21;havoc main_#t~nondet21;~mode3~0 := main_#t~nondet22;havoc main_#t~nondet22;havoc init_#res;havoc init_~tmp~0;havoc init_~tmp~0; 194#L131 assume 0 == ~r1~0; 207#L132 assume ~id1~0 >= 0; 224#L133 assume 0 == ~st1~0; 225#L134 assume ~send1~0 == ~id1~0; 184#L135 assume 0 == ~mode1~0 % 256; 185#L136 assume ~id2~0 >= 0; 216#L137 assume 0 == ~st2~0; 195#L138 assume ~send2~0 == ~id2~0; 196#L139 assume 0 == ~mode2~0 % 256; 221#L140 assume ~id3~0 >= 0; 232#L141 assume 0 == ~st3~0; 208#L142 assume ~send3~0 == ~id3~0; 209#L143 assume 0 == ~mode3~0 % 256; 211#L144 assume ~id1~0 != ~id2~0; 227#L145 assume ~id1~0 != ~id3~0; 186#L146 assume ~id2~0 != ~id3~0;init_~tmp~0 := 1; 187#L131-1 init_#res := init_~tmp~0; 204#L196 main_#t~ret23 := init_#res;main_~i2~0 := main_#t~ret23;havoc main_#t~ret23; 206#L248 assume !(0 == main_~i2~0); 201#L248-2 ~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;main_~i2~0 := 0; 190#L256-2 [2021-10-11 00:26:42,498 INFO L796 eck$LassoCheckResult]: Loop: 190#L256-2 assume !!(main_~i2~0 < 6);havoc node1_#t~ite7, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 191#L54 assume 0 != ~mode1~0 % 256;~r1~0 := (if (1 + ~r1~0) % 256 <= 127 then (1 + ~r1~0) % 256 else (1 + ~r1~0) % 256 - 256);node1_~m1~0 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 178#L58 assume !(node1_~m1~0 != ~nomsg~0); 179#L58-1 ~mode1~0 := 0; 210#L54-2 havoc node2_#t~ite8, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 228#L82 assume 0 != ~mode2~0 % 256;node2_~m2~0 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 229#L85 assume !(node2_~m2~0 != ~nomsg~0); 218#L85-1 ~mode2~0 := 0; 189#L82-2 havoc node3_#t~ite9, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 226#L107 assume !(0 != ~mode3~0 % 256); 205#L120 assume ~send3~0 != ~nomsg~0 && ~p3_new~0 == ~nomsg~0;node3_#t~ite9 := ~send3~0; 199#L120-2 ~p3_new~0 := (if node3_#t~ite9 % 256 <= 127 then node3_#t~ite9 % 256 else node3_#t~ite9 % 256 - 256);havoc node3_#t~ite9;~mode3~0 := 1; 200#L107-2 ~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;havoc check_#res;havoc check_~tmp~1;havoc check_~tmp~1; 202#L204 assume !(~st1~0 + ~st2~0 + ~st3~0 <= 1);check_~tmp~1 := 0; 182#L204-1 check_#res := check_~tmp~1; 197#L224 main_#t~ret24 := check_#res;main_~c1~0 := main_#t~ret24;havoc main_#t~ret24;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 231#L280 assume !(0 == assert_~arg % 256); 217#L275 main_#t~post25 := main_~i2~0;main_~i2~0 := 1 + main_#t~post25;havoc main_#t~post25; 190#L256-2 [2021-10-11 00:26:42,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:26:42,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1473464705, now seen corresponding path program 1 times [2021-10-11 00:26:42,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:26:42,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108261310] [2021-10-11 00:26:42,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:26:42,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:26:42,563 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:26:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:26:42,610 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:26:42,681 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:26:42,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:26:42,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1735879462, now seen corresponding path program 2 times [2021-10-11 00:26:42,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:26:42,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185334009] [2021-10-11 00:26:42,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:26:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:26:42,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:26:42,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185334009] [2021-10-11 00:26:42,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:26:42,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 00:26:42,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112358725] [2021-10-11 00:26:42,814 INFO L811 eck$LassoCheckResult]: loop already infeasible [2021-10-11 00:26:42,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:26:42,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:26:42,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:26:42,816 INFO L87 Difference]: Start difference. First operand 56 states and 76 transitions. cyclomatic complexity: 21 Second operand 5 states. [2021-10-11 00:26:42,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:26:42,856 INFO L93 Difference]: Finished difference Result 59 states and 78 transitions. [2021-10-11 00:26:42,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:26:42,857 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 59 states and 78 transitions. [2021-10-11 00:26:42,859 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 34 [2021-10-11 00:26:42,860 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 59 states to 56 states and 73 transitions. [2021-10-11 00:26:42,860 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 56 [2021-10-11 00:26:42,861 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 56 [2021-10-11 00:26:42,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 73 transitions. [2021-10-11 00:26:42,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-11 00:26:42,862 INFO L692 BuchiCegarLoop]: Abstraction has 56 states and 73 transitions. [2021-10-11 00:26:42,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 73 transitions. [2021-10-11 00:26:42,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-10-11 00:26:42,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-10-11 00:26:42,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2021-10-11 00:26:42,866 INFO L715 BuchiCegarLoop]: Abstraction has 56 states and 73 transitions. [2021-10-11 00:26:42,866 INFO L595 BuchiCegarLoop]: Abstraction has 56 states and 73 transitions. [2021-10-11 00:26:42,866 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-11 00:26:42,867 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 56 states and 73 transitions. [2021-10-11 00:26:42,868 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 34 [2021-10-11 00:26:42,868 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:26:42,868 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:26:42,869 INFO L853 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] [2021-10-11 00:26:42,869 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:26:42,869 INFO L794 eck$LassoCheckResult]: Stem: 347#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(34);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0; 319#L-1 havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, 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~ret23, main_#t~ret24, main_#t~post25, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~r1~0 := main_#t~nondet10;havoc main_#t~nondet10;~id1~0 := main_#t~nondet11;havoc main_#t~nondet11;~st1~0 := main_#t~nondet12;havoc main_#t~nondet12;~send1~0 := main_#t~nondet13;havoc main_#t~nondet13;~mode1~0 := main_#t~nondet14;havoc main_#t~nondet14;~id2~0 := main_#t~nondet15;havoc main_#t~nondet15;~st2~0 := main_#t~nondet16;havoc main_#t~nondet16;~send2~0 := main_#t~nondet17;havoc main_#t~nondet17;~mode2~0 := main_#t~nondet18;havoc main_#t~nondet18;~id3~0 := main_#t~nondet19;havoc main_#t~nondet19;~st3~0 := main_#t~nondet20;havoc main_#t~nondet20;~send3~0 := main_#t~nondet21;havoc main_#t~nondet21;~mode3~0 := main_#t~nondet22;havoc main_#t~nondet22;havoc init_#res;havoc init_~tmp~0;havoc init_~tmp~0; 320#L131 assume 0 == ~r1~0; 334#L132 assume ~id1~0 >= 0; 351#L133 assume 0 == ~st1~0; 352#L134 assume ~send1~0 == ~id1~0; 310#L135 assume 0 == ~mode1~0 % 256; 311#L136 assume ~id2~0 >= 0; 343#L137 assume 0 == ~st2~0; 321#L138 assume ~send2~0 == ~id2~0; 322#L139 assume 0 == ~mode2~0 % 256; 348#L140 assume ~id3~0 >= 0; 359#L141 assume 0 == ~st3~0; 335#L142 assume ~send3~0 == ~id3~0; 336#L143 assume 0 == ~mode3~0 % 256; 338#L144 assume ~id1~0 != ~id2~0; 353#L145 assume ~id1~0 != ~id3~0; 312#L146 assume ~id2~0 != ~id3~0;init_~tmp~0 := 1; 313#L131-1 init_#res := init_~tmp~0; 331#L196 main_#t~ret23 := init_#res;main_~i2~0 := main_#t~ret23;havoc main_#t~ret23; 332#L248 assume !(0 == main_~i2~0); 325#L248-2 ~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;main_~i2~0 := 0; 316#L256-2 [2021-10-11 00:26:42,870 INFO L796 eck$LassoCheckResult]: Loop: 316#L256-2 assume !!(main_~i2~0 < 6);havoc node1_#t~ite7, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 317#L54 assume 0 != ~mode1~0 % 256;~r1~0 := (if (1 + ~r1~0) % 256 <= 127 then (1 + ~r1~0) % 256 else (1 + ~r1~0) % 256 - 256);node1_~m1~0 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 305#L58 assume !(node1_~m1~0 != ~nomsg~0); 306#L58-1 ~mode1~0 := 0; 337#L54-2 havoc node2_#t~ite8, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 355#L82 assume 0 != ~mode2~0 % 256;node2_~m2~0 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 356#L85 assume !(node2_~m2~0 != ~nomsg~0); 345#L85-1 ~mode2~0 := 0; 315#L82-2 havoc node3_#t~ite9, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 354#L107 assume 0 != ~mode3~0 % 256;node3_~m3~0 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 349#L110 assume !(node3_~m3~0 != ~nomsg~0); 342#L110-1 ~mode3~0 := 0; 328#L107-2 ~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;havoc check_#res;havoc check_~tmp~1;havoc check_~tmp~1; 329#L204 assume ~st1~0 + ~st2~0 + ~st3~0 <= 1; 330#L205 assume ~r1~0 >= 3; 309#L209 assume ~r1~0 < 3;check_~tmp~1 := 1; 323#L204-1 check_#res := check_~tmp~1; 324#L224 main_#t~ret24 := check_#res;main_~c1~0 := main_#t~ret24;havoc main_#t~ret24;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 358#L280 assume !(0 == assert_~arg % 256); 344#L275 main_#t~post25 := main_~i2~0;main_~i2~0 := 1 + main_#t~post25;havoc main_#t~post25; 316#L256-2 [2021-10-11 00:26:42,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:26:42,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1473464705, now seen corresponding path program 2 times [2021-10-11 00:26:42,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:26:42,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278599093] [2021-10-11 00:26:42,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:26:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:26:42,891 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:26:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:26:42,910 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:26:42,919 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:26:42,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:26:42,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1935834464, now seen corresponding path program 1 times [2021-10-11 00:26:42,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:26:42,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493120681] [2021-10-11 00:26:42,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:26:42,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:26:42,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:26:42,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493120681] [2021-10-11 00:26:42,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:26:42,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:26:42,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106560688] [2021-10-11 00:26:42,947 INFO L811 eck$LassoCheckResult]: loop already infeasible [2021-10-11 00:26:42,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:26:42,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:26:42,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:26:42,948 INFO L87 Difference]: Start difference. First operand 56 states and 73 transitions. cyclomatic complexity: 18 Second operand 3 states. [2021-10-11 00:26:42,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:26:42,980 INFO L93 Difference]: Finished difference Result 84 states and 113 transitions. [2021-10-11 00:26:42,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 00:26:42,980 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 113 transitions. [2021-10-11 00:26:42,985 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 62 [2021-10-11 00:26:42,987 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 84 states and 113 transitions. [2021-10-11 00:26:42,989 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 84 [2021-10-11 00:26:42,990 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 84 [2021-10-11 00:26:42,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 113 transitions. [2021-10-11 00:26:42,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-11 00:26:42,991 INFO L692 BuchiCegarLoop]: Abstraction has 84 states and 113 transitions. [2021-10-11 00:26:42,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states and 113 transitions. [2021-10-11 00:26:42,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-10-11 00:26:42,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2021-10-11 00:26:42,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 113 transitions. [2021-10-11 00:26:42,997 INFO L715 BuchiCegarLoop]: Abstraction has 84 states and 113 transitions. [2021-10-11 00:26:42,998 INFO L595 BuchiCegarLoop]: Abstraction has 84 states and 113 transitions. [2021-10-11 00:26:42,998 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-11 00:26:42,998 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 84 states and 113 transitions. [2021-10-11 00:26:42,999 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 62 [2021-10-11 00:26:42,999 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:26:42,999 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:26:43,001 INFO L853 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] [2021-10-11 00:26:43,001 INFO L854 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] [2021-10-11 00:26:43,001 INFO L794 eck$LassoCheckResult]: Stem: 494#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(34);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~nomsg~0 := -1;~r1~0 := 0;~p1~0 := 0;~p1_old~0 := 0;~p1_new~0 := 0;~id1~0 := 0;~st1~0 := 0;~send1~0 := 0;~mode1~0 := 0;~p2~0 := 0;~p2_old~0 := 0;~p2_new~0 := 0;~id2~0 := 0;~st2~0 := 0;~send2~0 := 0;~mode2~0 := 0;~p3~0 := 0;~p3_old~0 := 0;~p3_new~0 := 0;~id3~0 := 0;~st3~0 := 0;~send3~0 := 0;~mode3~0 := 0; 465#L-1 havoc main_#res;havoc main_#t~nondet10, main_#t~nondet11, main_#t~nondet12, 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~ret23, main_#t~ret24, main_#t~post25, main_~c1~0, main_~i2~0;havoc main_~c1~0;havoc main_~i2~0;main_~c1~0 := 0;~r1~0 := main_#t~nondet10;havoc main_#t~nondet10;~id1~0 := main_#t~nondet11;havoc main_#t~nondet11;~st1~0 := main_#t~nondet12;havoc main_#t~nondet12;~send1~0 := main_#t~nondet13;havoc main_#t~nondet13;~mode1~0 := main_#t~nondet14;havoc main_#t~nondet14;~id2~0 := main_#t~nondet15;havoc main_#t~nondet15;~st2~0 := main_#t~nondet16;havoc main_#t~nondet16;~send2~0 := main_#t~nondet17;havoc main_#t~nondet17;~mode2~0 := main_#t~nondet18;havoc main_#t~nondet18;~id3~0 := main_#t~nondet19;havoc main_#t~nondet19;~st3~0 := main_#t~nondet20;havoc main_#t~nondet20;~send3~0 := main_#t~nondet21;havoc main_#t~nondet21;~mode3~0 := main_#t~nondet22;havoc main_#t~nondet22;havoc init_#res;havoc init_~tmp~0;havoc init_~tmp~0; 466#L131 assume 0 == ~r1~0; 480#L132 assume ~id1~0 >= 0; 499#L133 assume 0 == ~st1~0; 500#L134 assume ~send1~0 == ~id1~0; 456#L135 assume 0 == ~mode1~0 % 256; 457#L136 assume ~id2~0 >= 0; 490#L137 assume 0 == ~st2~0; 467#L138 assume ~send2~0 == ~id2~0; 468#L139 assume 0 == ~mode2~0 % 256; 495#L140 assume ~id3~0 >= 0; 508#L141 assume 0 == ~st3~0; 481#L142 assume ~send3~0 == ~id3~0; 482#L143 assume 0 == ~mode3~0 % 256; 484#L144 assume ~id1~0 != ~id2~0; 502#L145 assume ~id1~0 != ~id3~0; 458#L146 assume ~id2~0 != ~id3~0;init_~tmp~0 := 1; 459#L131-1 init_#res := init_~tmp~0; 477#L196 main_#t~ret23 := init_#res;main_~i2~0 := main_#t~ret23;havoc main_#t~ret23; 478#L248 assume !(0 == main_~i2~0); 471#L248-2 ~p1_old~0 := ~nomsg~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~nomsg~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~nomsg~0;~p3_new~0 := ~nomsg~0;main_~i2~0 := 0; 462#L256-2 [2021-10-11 00:26:43,001 INFO L796 eck$LassoCheckResult]: Loop: 462#L256-2 assume !!(main_~i2~0 < 6);havoc node1_#t~ite7, node1_~m1~0;havoc node1_~m1~0;node1_~m1~0 := ~nomsg~0; 463#L54 assume 0 != ~mode1~0 % 256;~r1~0 := (if (1 + ~r1~0) % 256 <= 127 then (1 + ~r1~0) % 256 else (1 + ~r1~0) % 256 - 256);node1_~m1~0 := ~p3_old~0;~p3_old~0 := ~nomsg~0; 451#L58 assume !(node1_~m1~0 != ~nomsg~0); 452#L58-1 ~mode1~0 := 0; 483#L54-2 havoc node2_#t~ite8, node2_~m2~0;havoc node2_~m2~0;node2_~m2~0 := ~nomsg~0; 503#L82 assume 0 != ~mode2~0 % 256;node2_~m2~0 := ~p1_old~0;~p1_old~0 := ~nomsg~0; 504#L85 assume !(node2_~m2~0 != ~nomsg~0); 492#L85-1 ~mode2~0 := 0; 461#L82-2 havoc node3_#t~ite9, node3_~m3~0;havoc node3_~m3~0;node3_~m3~0 := ~nomsg~0; 501#L107 assume 0 != ~mode3~0 % 256;node3_~m3~0 := ~p2_old~0;~p2_old~0 := ~nomsg~0; 497#L110 assume !(node3_~m3~0 != ~nomsg~0); 489#L110-1 ~mode3~0 := 0; 474#L107-2 ~p1_old~0 := ~p1_new~0;~p1_new~0 := ~nomsg~0;~p2_old~0 := ~p2_new~0;~p2_new~0 := ~nomsg~0;~p3_old~0 := ~p3_new~0;~p3_new~0 := ~nomsg~0;havoc check_#res;havoc check_~tmp~1;havoc check_~tmp~1; 475#L204 assume ~st1~0 + ~st2~0 + ~st3~0 <= 1; 476#L205 assume !(~r1~0 >= 3); 454#L208 assume 0 == ~st1~0 + ~st2~0 + ~st3~0; 455#L209 assume ~r1~0 < 3;check_~tmp~1 := 1; 469#L204-1 check_#res := check_~tmp~1; 470#L224 main_#t~ret24 := check_#res;main_~c1~0 := main_#t~ret24;havoc main_#t~ret24;assert_#in~arg := (if 0 == main_~c1~0 then 0 else 1);havoc assert_~arg;assert_~arg := assert_#in~arg; 507#L280 assume !(0 == assert_~arg % 256); 491#L275 main_#t~post25 := main_~i2~0;main_~i2~0 := 1 + main_#t~post25;havoc main_#t~post25; 462#L256-2 [2021-10-11 00:26:43,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:26:43,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1473464705, now seen corresponding path program 3 times [2021-10-11 00:26:43,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:26:43,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45747413] [2021-10-11 00:26:43,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:26:43,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:26:43,020 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:26:43,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:26:43,037 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:26:43,045 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:26:43,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:26:43,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1765245589, now seen corresponding path program 1 times [2021-10-11 00:26:43,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:26:43,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942035913] [2021-10-11 00:26:43,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:26:43,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:26:43,059 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:26:43,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:26:43,069 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:26:43,074 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:26:43,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:26:43,075 INFO L82 PathProgramCache]: Analyzing trace with hash 487220951, now seen corresponding path program 1 times [2021-10-11 00:26:43,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:26:43,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808926962] [2021-10-11 00:26:43,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:26:43,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:26:43,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:26:43,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808926962] [2021-10-11 00:26:43,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:26:43,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:26:43,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000228626] [2021-10-11 00:26:43,419 WARN L197 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 98 [2021-10-11 00:26:43,676 WARN L197 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 84 [2021-10-11 00:26:43,686 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:26:43,687 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:26:43,687 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:26:43,687 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:26:43,688 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-11 00:26:43,688 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:26:43,688 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:26:43,688 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:26:43,688 INFO L133 ssoRankerPreferences]: Filename of dumped script: pals_lcr.3.1.ufo.BOUNDED-6.pals.c_Iteration4_Loop [2021-10-11 00:26:43,689 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:26:43,689 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:26:43,709 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:26:43,717 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:26:43,723 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:26:43,726 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:26:43,732 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:26:43,757 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:26:43,765 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:26:43,768 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:26:43,771 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:26:43,788 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:26:43,795 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:26:43,805 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:26:43,807 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:26:43,810 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:26:44,336 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:26:44,337 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6326e1bf-d297-41da-aeae-72beb9d1ada8/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:26:44,354 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:26:44,355 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6326e1bf-d297-41da-aeae-72beb9d1ada8/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:26:44,403 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-11 00:26:44,404 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:26:44,445 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-11 00:26:44,447 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:26:44,447 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:26:44,447 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:26:44,447 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:26:44,447 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-11 00:26:44,448 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:26:44,448 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:26:44,448 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:26:44,448 INFO L133 ssoRankerPreferences]: Filename of dumped script: pals_lcr.3.1.ufo.BOUNDED-6.pals.c_Iteration4_Loop [2021-10-11 00:26:44,448 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:26:44,448 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:26:44,451 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:26:44,466 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:26:44,472 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:26:44,475 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:26:44,481 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:26:44,509 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:26:44,513 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:26:44,515 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:26:44,532 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:26:44,538 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:26:44,544 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:26:44,554 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:26:44,557 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:26:44,560 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:26:45,058 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 27 [2021-10-11 00:26:45,121 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:26:45,126 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6326e1bf-d297-41da-aeae-72beb9d1ada8/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:26:45,169 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:26:45,171 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:26:45,172 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:26:45,172 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:26:45,172 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:26:45,172 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:26:45,175 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-11 00:26:45,175 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:26:45,184 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-11 00:26:45,192 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-11 00:26:45,192 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6326e1bf-d297-41da-aeae-72beb9d1ada8/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:26:45,200 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-11 00:26:45,200 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-11 00:26:45,201 INFO L510 LassoAnalysis]: Proved termination. [2021-10-11 00:26:45,201 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i2~0) = -2*ULTIMATE.start_main_~i2~0 + 11 Supporting invariants [] [2021-10-11 00:26:45,234 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-11 00:26:45,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:26:45,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:26:45,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 00:26:45,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:26:45,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:26:45,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 00:26:45,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:26:45,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:26:45,523 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 [2021-10-11 00:26:45,524 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 84 states and 113 transitions. cyclomatic complexity: 30 Second operand 3 states. [2021-10-11 00:26:45,578 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 84 states and 113 transitions. cyclomatic complexity: 30. Second operand 3 states. Result 145 states and 204 transitions. Complement of second has 4 states. [2021-10-11 00:26:45,578 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 [2021-10-11 00:26:45,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-11 00:26:45,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2021-10-11 00:26:45,580 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 73 transitions. Stem has 22 letters. Loop has 21 letters. [2021-10-11 00:26:45,584 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:26:45,584 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 73 transitions. Stem has 43 letters. Loop has 21 letters. [2021-10-11 00:26:45,586 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:26:45,586 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 73 transitions. Stem has 22 letters. Loop has 42 letters. [2021-10-11 00:26:45,588 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:26:45,589 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 145 states and 204 transitions. [2021-10-11 00:26:45,594 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-11 00:26:45,595 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 145 states to 0 states and 0 transitions. [2021-10-11 00:26:45,595 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-11 00:26:45,595 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-11 00:26:45,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-11 00:26:45,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-11 00:26:45,595 INFO L692 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:26:45,595 INFO L715 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:26:45,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:26:45,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 00:26:45,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 00:26:45,596 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 3 states. [2021-10-11 00:26:45,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:26:45,596 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-10-11 00:26:45,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 00:26:45,597 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-10-11 00:26:45,597 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-11 00:26:45,597 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 00:26:45,597 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-11 00:26:45,597 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-11 00:26:45,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-11 00:26:45,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-11 00:26:45,597 INFO L692 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:26:45,597 INFO L715 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:26:45,597 INFO L595 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:26:45,598 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-11 00:26:45,598 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-11 00:26:45,598 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-11 00:26:45,598 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-11 00:26:45,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 11.10 12:26:45 BoogieIcfgContainer [2021-10-11 00:26:45,603 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-11 00:26:45,604 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:26:45,604 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:26:45,604 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:26:45,607 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:26:41" (3/4) ... [2021-10-11 00:26:45,610 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 00:26:45,610 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:26:45,612 INFO L168 Benchmark]: Toolchain (without parser) took 4871.86 ms. Allocated memory was 96.5 MB in the beginning and 161.5 MB in the end (delta: 65.0 MB). Free memory was 62.8 MB in the beginning and 125.0 MB in the end (delta: -62.2 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:26:45,613 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 96.5 MB. Free memory was 49.1 MB in the beginning and 49.1 MB in the end (delta: 76.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:26:45,619 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.08 ms. Allocated memory was 96.5 MB in the beginning and 130.0 MB in the end (delta: 33.6 MB). Free memory was 62.6 MB in the beginning and 102.9 MB in the end (delta: -40.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:26:45,620 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.64 ms. Allocated memory is still 130.0 MB. Free memory was 102.9 MB in the beginning and 100.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:26:45,621 INFO L168 Benchmark]: Boogie Preprocessor took 26.34 ms. Allocated memory is still 130.0 MB. Free memory was 100.8 MB in the beginning and 99.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:26:45,621 INFO L168 Benchmark]: RCFGBuilder took 647.38 ms. Allocated memory is still 130.0 MB. Free memory was 99.5 MB in the beginning and 71.7 MB in the end (delta: 27.8 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-10-11 00:26:45,622 INFO L168 Benchmark]: BuchiAutomizer took 3832.00 ms. Allocated memory was 130.0 MB in the beginning and 161.5 MB in the end (delta: 31.5 MB). Free memory was 71.7 MB in the beginning and 126.0 MB in the end (delta: -54.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:26:45,625 INFO L168 Benchmark]: Witness Printer took 5.99 ms. Allocated memory is still 161.5 MB. Free memory was 126.0 MB in the beginning and 125.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:26:45,631 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 96.5 MB. Free memory was 49.1 MB in the beginning and 49.1 MB in the end (delta: 76.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 312.08 ms. Allocated memory was 96.5 MB in the beginning and 130.0 MB in the end (delta: 33.6 MB). Free memory was 62.6 MB in the beginning and 102.9 MB in the end (delta: -40.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.64 ms. Allocated memory is still 130.0 MB. Free memory was 102.9 MB in the beginning and 100.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.34 ms. Allocated memory is still 130.0 MB. Free memory was 100.8 MB in the beginning and 99.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 647.38 ms. Allocated memory is still 130.0 MB. Free memory was 99.5 MB in the beginning and 71.7 MB in the end (delta: 27.8 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 3832.00 ms. Allocated memory was 130.0 MB in the beginning and 161.5 MB in the end (delta: 31.5 MB). Free memory was 71.7 MB in the beginning and 126.0 MB in the end (delta: -54.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.99 ms. Allocated memory is still 161.5 MB. Free memory was 126.0 MB in the beginning and 125.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. 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 3.7s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 2.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 5. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 34 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 84 states and ocurred in iteration 3. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 347 SDtfs, 219 SDslu, 585 SDs, 0 SdLazy, 46 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT0 conc0 concLT1 SILN0 SILU0 SILI1 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital122 mio100 ax100 hnf100 lsp31 ukn100 mio100 lsp100 div168 bol100 ite100 ukn100 eq153 hnf75 smp100 dnf104 smp96 tf102 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 74ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...