./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/locks/test_locks_15-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed15a-9154-4a5d-a1ab-28a4021ea285/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed15a-9154-4a5d-a1ab-28a4021ea285/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed15a-9154-4a5d-a1ab-28a4021ea285/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed15a-9154-4a5d-a1ab-28a4021ea285/bin/uautomizer-DQz5hQGWxF/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/locks/test_locks_15-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed15a-9154-4a5d-a1ab-28a4021ea285/bin/uautomizer-DQz5hQGWxF/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed15a-9154-4a5d-a1ab-28a4021ea285/bin/uautomizer-DQz5hQGWxF --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 ad13fcacd201ae20f6800b42387b8ec1153fb1bf63cee7a12ec23f4a302be7c7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:44:32,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:44:32,294 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:44:32,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:44:32,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:44:32,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:44:32,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:44:32,369 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:44:32,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:44:32,379 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:44:32,380 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:44:32,382 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:44:32,383 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:44:32,386 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:44:32,388 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:44:32,393 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:44:32,395 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:44:32,396 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:44:32,399 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:44:32,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:44:32,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:44:32,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:44:32,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:44:32,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:44:32,426 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:44:32,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:44:32,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:44:32,429 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:44:32,430 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:44:32,432 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:44:32,432 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:44:32,433 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:44:32,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:44:32,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:44:32,439 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:44:32,439 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:44:32,440 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:44:32,440 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:44:32,441 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:44:32,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:44:32,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:44:32,443 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed15a-9154-4a5d-a1ab-28a4021ea285/bin/uautomizer-DQz5hQGWxF/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-11-20 06:44:32,491 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:44:32,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:44:32,492 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:44:32,492 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:44:32,494 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:44:32,495 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:44:32,495 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:44:32,495 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-20 06:44:32,495 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-20 06:44:32,496 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-20 06:44:32,497 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-20 06:44:32,497 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-20 06:44:32,497 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-20 06:44:32,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:44:32,498 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:44:32,498 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 06:44:32,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:44:32,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:44:32,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:44:32,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-20 06:44:32,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-20 06:44:32,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-20 06:44:32,500 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:44:32,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:44:32,500 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-20 06:44:32,500 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:44:32,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-20 06:44:32,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:44:32,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:44:32,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:44:32,503 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:44:32,504 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:44:32,505 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-20 06:44:32,505 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_648ed15a-9154-4a5d-a1ab-28a4021ea285/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed15a-9154-4a5d-a1ab-28a4021ea285/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad13fcacd201ae20f6800b42387b8ec1153fb1bf63cee7a12ec23f4a302be7c7 [2021-11-20 06:44:32,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:44:32,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:44:32,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:44:32,886 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:44:32,887 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:44:32,889 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed15a-9154-4a5d-a1ab-28a4021ea285/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/locks/test_locks_15-2.c [2021-11-20 06:44:32,975 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed15a-9154-4a5d-a1ab-28a4021ea285/bin/uautomizer-DQz5hQGWxF/data/84d2fe2c8/aab68a1b5c664f7f9056f215a0ea89ef/FLAG9b1145070 [2021-11-20 06:44:33,527 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:44:33,528 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed15a-9154-4a5d-a1ab-28a4021ea285/sv-benchmarks/c/locks/test_locks_15-2.c [2021-11-20 06:44:33,540 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed15a-9154-4a5d-a1ab-28a4021ea285/bin/uautomizer-DQz5hQGWxF/data/84d2fe2c8/aab68a1b5c664f7f9056f215a0ea89ef/FLAG9b1145070 [2021-11-20 06:44:33,883 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed15a-9154-4a5d-a1ab-28a4021ea285/bin/uautomizer-DQz5hQGWxF/data/84d2fe2c8/aab68a1b5c664f7f9056f215a0ea89ef [2021-11-20 06:44:33,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:44:33,888 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:44:33,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:44:33,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:44:33,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:44:33,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:44:33" (1/1) ... [2021-11-20 06:44:33,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38642a67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:44:33, skipping insertion in model container [2021-11-20 06:44:33,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:44:33" (1/1) ... [2021-11-20 06:44:33,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:44:33,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:44:34,173 WARN L230 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_648ed15a-9154-4a5d-a1ab-28a4021ea285/sv-benchmarks/c/locks/test_locks_15-2.c[5628,5641] [2021-11-20 06:44:34,174 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:44:34,184 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:44:34,209 WARN L230 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_648ed15a-9154-4a5d-a1ab-28a4021ea285/sv-benchmarks/c/locks/test_locks_15-2.c[5628,5641] [2021-11-20 06:44:34,211 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:44:34,224 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:44:34,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:44:34 WrapperNode [2021-11-20 06:44:34,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:44:34,226 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:44:34,226 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:44:34,226 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:44:34,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:44:34" (1/1) ... [2021-11-20 06:44:34,242 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:44:34" (1/1) ... [2021-11-20 06:44:34,266 INFO L137 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 177 [2021-11-20 06:44:34,266 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:44:34,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:44:34,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:44:34,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:44:34,276 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:44:34" (1/1) ... [2021-11-20 06:44:34,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:44:34" (1/1) ... [2021-11-20 06:44:34,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:44:34" (1/1) ... [2021-11-20 06:44:34,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:44:34" (1/1) ... [2021-11-20 06:44:34,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:44:34" (1/1) ... [2021-11-20 06:44:34,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:44:34" (1/1) ... [2021-11-20 06:44:34,294 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:44:34" (1/1) ... [2021-11-20 06:44:34,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:44:34,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:44:34,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:44:34,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:44:34,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:44:34" (1/1) ... [2021-11-20 06:44:34,308 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:44:34,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed15a-9154-4a5d-a1ab-28a4021ea285/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:44:34,339 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed15a-9154-4a5d-a1ab-28a4021ea285/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:44:34,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed15a-9154-4a5d-a1ab-28a4021ea285/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-20 06:44:34,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:44:34,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:44:34,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:44:34,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:44:34,480 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:44:34,482 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:44:34,711 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:44:34,719 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:44:34,719 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 06:44:34,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:44:34 BoogieIcfgContainer [2021-11-20 06:44:34,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:44:34,722 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-20 06:44:34,722 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-20 06:44:34,725 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-20 06:44:34,726 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 06:44:34,726 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 06:44:33" (1/3) ... [2021-11-20 06:44:34,728 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@131d7cc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 06:44:34, skipping insertion in model container [2021-11-20 06:44:34,728 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 06:44:34,728 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:44:34" (2/3) ... [2021-11-20 06:44:34,728 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@131d7cc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 06:44:34, skipping insertion in model container [2021-11-20 06:44:34,729 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 06:44:34,729 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:44:34" (3/3) ... [2021-11-20 06:44:34,730 INFO L388 chiAutomizerObserver]: Analyzing ICFG test_locks_15-2.c [2021-11-20 06:44:34,775 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-20 06:44:34,775 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-20 06:44:34,776 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-20 06:44:34,776 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-20 06:44:34,776 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-20 06:44:34,778 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-20 06:44:34,779 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-20 06:44:34,779 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-20 06:44:34,812 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 54 states, 53 states have (on average 1.9056603773584906) internal successors, (101), 53 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:44:34,863 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2021-11-20 06:44:34,863 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:44:34,863 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:44:34,887 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-20 06:44:34,887 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:44:34,887 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-20 06:44:34,888 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 54 states, 53 states have (on average 1.9056603773584906) internal successors, (101), 53 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:44:34,896 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2021-11-20 06:44:34,918 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:44:34,918 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:44:34,920 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-20 06:44:34,920 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:44:34,928 INFO L791 eck$LassoCheckResult]: Stem: 44#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 34#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 21#L225-1true [2021-11-20 06:44:34,929 INFO L793 eck$LassoCheckResult]: Loop: 21#L225-1true assume !false;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 33#L58true assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 29#L93true assume 0 != main_~p1~0#1;main_~lk1~0#1 := 1; 26#L93-2true assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 14#L97-1true assume !(0 != main_~p3~0#1); 17#L101-1true assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 51#L105-1true assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 46#L109-1true assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 13#L113-1true assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 23#L117-1true assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 31#L121-1true assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 18#L125-1true assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 36#L129-1true assume !(0 != main_~p11~0#1); 4#L133-1true assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 7#L137-1true assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 41#L141-1true assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 55#L145-1true assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 49#L149-1true assume !(0 != main_~p1~0#1); 48#L155-1true assume !(0 != main_~p2~0#1); 28#L160-1true assume !(0 != main_~p3~0#1); 12#L165-1true assume !(0 != main_~p4~0#1); 43#L170-1true assume !(0 != main_~p5~0#1); 47#L175-1true assume !(0 != main_~p6~0#1); 19#L180-1true assume !(0 != main_~p7~0#1); 40#L185-1true assume !(0 != main_~p8~0#1); 25#L190-1true assume !(0 != main_~p9~0#1); 42#L195-1true assume !(0 != main_~p10~0#1); 16#L200-1true assume !(0 != main_~p11~0#1); 45#L205-1true assume !(0 != main_~p12~0#1); 24#L210-1true assume !(0 != main_~p13~0#1); 6#L215-1true assume !(0 != main_~p14~0#1); 38#L220-1true assume !(0 != main_~p15~0#1); 21#L225-1true [2021-11-20 06:44:34,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:44:34,952 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-11-20 06:44:34,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:44:34,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164991567] [2021-11-20 06:44:34,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:44:34,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:44:35,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:44:35,057 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:44:35,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:44:35,086 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:44:35,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:44:35,089 INFO L85 PathProgramCache]: Analyzing trace with hash 2064553094, now seen corresponding path program 1 times [2021-11-20 06:44:35,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:44:35,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199930650] [2021-11-20 06:44:35,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:44:35,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:44:35,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:44:35,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:44:35,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:44:35,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199930650] [2021-11-20 06:44:35,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199930650] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:44:35,210 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:44:35,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:44:35,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55659023] [2021-11-20 06:44:35,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:44:35,220 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-20 06:44:35,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:44:35,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:44:35,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:44:35,263 INFO L87 Difference]: Start difference. First operand has 54 states, 53 states have (on average 1.9056603773584906) internal successors, (101), 53 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:44:35,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:44:35,322 INFO L93 Difference]: Finished difference Result 105 states and 190 transitions. [2021-11-20 06:44:35,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:44:35,330 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 105 states and 190 transitions. [2021-11-20 06:44:35,345 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 93 [2021-11-20 06:44:35,352 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 105 states to 95 states and 153 transitions. [2021-11-20 06:44:35,372 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 95 [2021-11-20 06:44:35,372 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 95 [2021-11-20 06:44:35,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 95 states and 153 transitions. [2021-11-20 06:44:35,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:44:35,374 INFO L681 BuchiCegarLoop]: Abstraction has 95 states and 153 transitions. [2021-11-20 06:44:35,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states and 153 transitions. [2021-11-20 06:44:35,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-11-20 06:44:35,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 95 states have (on average 1.6105263157894736) internal successors, (153), 94 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:44:35,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 153 transitions. [2021-11-20 06:44:35,406 INFO L704 BuchiCegarLoop]: Abstraction has 95 states and 153 transitions. [2021-11-20 06:44:35,406 INFO L587 BuchiCegarLoop]: Abstraction has 95 states and 153 transitions. [2021-11-20 06:44:35,407 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-20 06:44:35,407 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 95 states and 153 transitions. [2021-11-20 06:44:35,410 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 93 [2021-11-20 06:44:35,411 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:44:35,411 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:44:35,412 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-20 06:44:35,412 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:44:35,412 INFO L791 eck$LassoCheckResult]: Stem: 215#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 208#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 209#L225-1 [2021-11-20 06:44:35,412 INFO L793 eck$LassoCheckResult]: Loop: 209#L225-1 assume !false;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 237#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 236#L93 assume !(0 != main_~p1~0#1); 235#L93-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 234#L97-1 assume !(0 != main_~p3~0#1); 233#L101-1 assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 220#L105-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 216#L109-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 183#L113-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 184#L117-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 199#L121-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 191#L125-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 192#L129-1 assume !(0 != main_~p11~0#1); 168#L133-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 169#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 173#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 212#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 221#L149-1 assume !(0 != main_~p1~0#1); 222#L155-1 assume !(0 != main_~p2~0#1); 261#L160-1 assume !(0 != main_~p3~0#1); 259#L165-1 assume !(0 != main_~p4~0#1); 256#L170-1 assume !(0 != main_~p5~0#1); 255#L175-1 assume !(0 != main_~p6~0#1); 253#L180-1 assume !(0 != main_~p7~0#1); 250#L185-1 assume !(0 != main_~p8~0#1); 249#L190-1 assume !(0 != main_~p9~0#1); 247#L195-1 assume !(0 != main_~p10~0#1); 187#L200-1 assume !(0 != main_~p11~0#1); 188#L205-1 assume !(0 != main_~p12~0#1); 206#L210-1 assume !(0 != main_~p13~0#1); 241#L215-1 assume !(0 != main_~p14~0#1); 239#L220-1 assume !(0 != main_~p15~0#1); 209#L225-1 [2021-11-20 06:44:35,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:44:35,413 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2021-11-20 06:44:35,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:44:35,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829090092] [2021-11-20 06:44:35,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:44:35,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:44:35,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:44:35,423 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:44:35,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:44:35,433 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:44:35,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:44:35,434 INFO L85 PathProgramCache]: Analyzing trace with hash 2087185348, now seen corresponding path program 1 times [2021-11-20 06:44:35,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:44:35,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075394522] [2021-11-20 06:44:35,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:44:35,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:44:35,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:44:35,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:44:35,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:44:35,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075394522] [2021-11-20 06:44:35,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075394522] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:44:35,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:44:35,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:44:35,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068804618] [2021-11-20 06:44:35,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:44:35,527 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-20 06:44:35,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:44:35,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:44:35,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:44:35,529 INFO L87 Difference]: Start difference. First operand 95 states and 153 transitions. cyclomatic complexity: 60 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:44:35,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:44:35,550 INFO L93 Difference]: Finished difference Result 186 states and 298 transitions. [2021-11-20 06:44:35,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:44:35,552 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 186 states and 298 transitions. [2021-11-20 06:44:35,558 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 184 [2021-11-20 06:44:35,561 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 186 states to 186 states and 298 transitions. [2021-11-20 06:44:35,561 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 186 [2021-11-20 06:44:35,562 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 186 [2021-11-20 06:44:35,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 186 states and 298 transitions. [2021-11-20 06:44:35,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:44:35,564 INFO L681 BuchiCegarLoop]: Abstraction has 186 states and 298 transitions. [2021-11-20 06:44:35,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states and 298 transitions. [2021-11-20 06:44:35,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2021-11-20 06:44:35,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 186 states have (on average 1.6021505376344085) internal successors, (298), 185 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:44:35,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 298 transitions. [2021-11-20 06:44:35,582 INFO L704 BuchiCegarLoop]: Abstraction has 186 states and 298 transitions. [2021-11-20 06:44:35,583 INFO L587 BuchiCegarLoop]: Abstraction has 186 states and 298 transitions. [2021-11-20 06:44:35,583 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-20 06:44:35,583 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 186 states and 298 transitions. [2021-11-20 06:44:35,587 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 184 [2021-11-20 06:44:35,587 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:44:35,587 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:44:35,588 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-20 06:44:35,588 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:44:35,588 INFO L791 eck$LassoCheckResult]: Stem: 508#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 498#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 499#L225-1 [2021-11-20 06:44:35,588 INFO L793 eck$LassoCheckResult]: Loop: 499#L225-1 assume !false;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 554#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 552#L93 assume !(0 != main_~p1~0#1); 537#L93-2 assume !(0 != main_~p2~0#1); 538#L97-1 assume !(0 != main_~p3~0#1); 533#L101-1 assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 514#L105-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 509#L109-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 470#L113-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 471#L117-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 486#L121-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 478#L125-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 479#L129-1 assume !(0 != main_~p11~0#1); 455#L133-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 456#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 460#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 515#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 516#L149-1 assume !(0 != main_~p1~0#1); 540#L155-1 assume !(0 != main_~p2~0#1); 591#L160-1 assume !(0 != main_~p3~0#1); 589#L165-1 assume !(0 != main_~p4~0#1); 586#L170-1 assume !(0 != main_~p5~0#1); 585#L175-1 assume !(0 != main_~p6~0#1); 583#L180-1 assume !(0 != main_~p7~0#1); 580#L185-1 assume !(0 != main_~p8~0#1); 579#L190-1 assume !(0 != main_~p9~0#1); 577#L195-1 assume !(0 != main_~p10~0#1); 575#L200-1 assume !(0 != main_~p11~0#1); 573#L205-1 assume !(0 != main_~p12~0#1); 571#L210-1 assume !(0 != main_~p13~0#1); 569#L215-1 assume !(0 != main_~p14~0#1); 558#L220-1 assume !(0 != main_~p15~0#1); 499#L225-1 [2021-11-20 06:44:35,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:44:35,589 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2021-11-20 06:44:35,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:44:35,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379168742] [2021-11-20 06:44:35,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:44:35,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:44:35,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:44:35,597 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:44:35,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:44:35,607 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:44:35,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:44:35,608 INFO L85 PathProgramCache]: Analyzing trace with hash -821578554, now seen corresponding path program 1 times [2021-11-20 06:44:35,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:44:35,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493159873] [2021-11-20 06:44:35,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:44:35,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:44:35,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:44:35,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:44:35,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:44:35,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493159873] [2021-11-20 06:44:35,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493159873] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:44:35,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:44:35,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:44:35,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59183169] [2021-11-20 06:44:35,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:44:35,679 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-20 06:44:35,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:44:35,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:44:35,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:44:35,681 INFO L87 Difference]: Start difference. First operand 186 states and 298 transitions. cyclomatic complexity: 116 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:44:35,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:44:35,705 INFO L93 Difference]: Finished difference Result 366 states and 582 transitions. [2021-11-20 06:44:35,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:44:35,706 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 366 states and 582 transitions. [2021-11-20 06:44:35,714 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 364 [2021-11-20 06:44:35,719 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 366 states to 366 states and 582 transitions. [2021-11-20 06:44:35,720 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 366 [2021-11-20 06:44:35,721 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 366 [2021-11-20 06:44:35,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 366 states and 582 transitions. [2021-11-20 06:44:35,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:44:35,724 INFO L681 BuchiCegarLoop]: Abstraction has 366 states and 582 transitions. [2021-11-20 06:44:35,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states and 582 transitions. [2021-11-20 06:44:35,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 366. [2021-11-20 06:44:35,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 366 states have (on average 1.5901639344262295) internal successors, (582), 365 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:44:35,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 582 transitions. [2021-11-20 06:44:35,761 INFO L704 BuchiCegarLoop]: Abstraction has 366 states and 582 transitions. [2021-11-20 06:44:35,761 INFO L587 BuchiCegarLoop]: Abstraction has 366 states and 582 transitions. [2021-11-20 06:44:35,761 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-20 06:44:35,761 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 366 states and 582 transitions. [2021-11-20 06:44:35,765 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 364 [2021-11-20 06:44:35,767 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:44:35,767 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:44:35,768 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-20 06:44:35,769 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:44:35,769 INFO L791 eck$LassoCheckResult]: Stem: 1067#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 1057#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 1058#L225-1 [2021-11-20 06:44:35,770 INFO L793 eck$LassoCheckResult]: Loop: 1058#L225-1 assume !false;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 1096#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 1092#L93 assume !(0 != main_~p1~0#1); 1085#L93-2 assume !(0 != main_~p2~0#1); 1086#L97-1 assume !(0 != main_~p3~0#1); 1237#L101-1 assume !(0 != main_~p4~0#1); 1234#L105-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 1232#L109-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 1228#L113-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 1224#L117-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 1220#L121-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 1216#L125-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 1212#L129-1 assume !(0 != main_~p11~0#1); 1208#L133-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 1204#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 1200#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 1196#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 1190#L149-1 assume !(0 != main_~p1~0#1); 1188#L155-1 assume !(0 != main_~p2~0#1); 1187#L160-1 assume !(0 != main_~p3~0#1); 1182#L165-1 assume !(0 != main_~p4~0#1); 1175#L170-1 assume !(0 != main_~p5~0#1); 1127#L175-1 assume !(0 != main_~p6~0#1); 1123#L180-1 assume !(0 != main_~p7~0#1); 1120#L185-1 assume !(0 != main_~p8~0#1); 1119#L190-1 assume !(0 != main_~p9~0#1); 1117#L195-1 assume !(0 != main_~p10~0#1); 1115#L200-1 assume !(0 != main_~p11~0#1); 1113#L205-1 assume !(0 != main_~p12~0#1); 1111#L210-1 assume !(0 != main_~p13~0#1); 1109#L215-1 assume !(0 != main_~p14~0#1); 1107#L220-1 assume !(0 != main_~p15~0#1); 1058#L225-1 [2021-11-20 06:44:35,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:44:35,772 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2021-11-20 06:44:35,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:44:35,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256063623] [2021-11-20 06:44:35,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:44:35,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:44:35,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:44:35,785 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:44:35,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:44:35,803 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:44:35,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:44:35,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1101649480, now seen corresponding path program 1 times [2021-11-20 06:44:35,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:44:35,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385579373] [2021-11-20 06:44:35,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:44:35,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:44:35,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:44:35,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:44:35,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:44:35,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385579373] [2021-11-20 06:44:35,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385579373] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:44:35,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:44:35,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:44:35,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184440473] [2021-11-20 06:44:35,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:44:35,885 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-20 06:44:35,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:44:35,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:44:35,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:44:35,886 INFO L87 Difference]: Start difference. First operand 366 states and 582 transitions. cyclomatic complexity: 224 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:44:35,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:44:35,920 INFO L93 Difference]: Finished difference Result 722 states and 1138 transitions. [2021-11-20 06:44:35,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:44:35,923 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 722 states and 1138 transitions. [2021-11-20 06:44:35,935 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 720 [2021-11-20 06:44:35,945 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 722 states to 722 states and 1138 transitions. [2021-11-20 06:44:35,946 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 722 [2021-11-20 06:44:35,948 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 722 [2021-11-20 06:44:35,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 722 states and 1138 transitions. [2021-11-20 06:44:35,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:44:35,961 INFO L681 BuchiCegarLoop]: Abstraction has 722 states and 1138 transitions. [2021-11-20 06:44:35,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states and 1138 transitions. [2021-11-20 06:44:35,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 722. [2021-11-20 06:44:35,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 722 states have (on average 1.5761772853185596) internal successors, (1138), 721 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:44:36,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 1138 transitions. [2021-11-20 06:44:36,004 INFO L704 BuchiCegarLoop]: Abstraction has 722 states and 1138 transitions. [2021-11-20 06:44:36,005 INFO L587 BuchiCegarLoop]: Abstraction has 722 states and 1138 transitions. [2021-11-20 06:44:36,005 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-11-20 06:44:36,005 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 722 states and 1138 transitions. [2021-11-20 06:44:36,011 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 720 [2021-11-20 06:44:36,011 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:44:36,011 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:44:36,015 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-20 06:44:36,015 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:44:36,015 INFO L791 eck$LassoCheckResult]: Stem: 2156#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 2149#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 2150#L225-1 [2021-11-20 06:44:36,015 INFO L793 eck$LassoCheckResult]: Loop: 2150#L225-1 assume !false;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 2251#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 2247#L93 assume !(0 != main_~p1~0#1); 2240#L93-2 assume !(0 != main_~p2~0#1); 2235#L97-1 assume !(0 != main_~p3~0#1); 2228#L101-1 assume !(0 != main_~p4~0#1); 2222#L105-1 assume !(0 != main_~p5~0#1); 2218#L109-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 2216#L113-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 2214#L117-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 2212#L121-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 2210#L125-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 2207#L129-1 assume !(0 != main_~p11~0#1); 2208#L133-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 2201#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 2202#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 2194#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 2195#L149-1 assume !(0 != main_~p1~0#1); 2184#L155-1 assume !(0 != main_~p2~0#1); 2186#L160-1 assume !(0 != main_~p3~0#1); 2363#L165-1 assume !(0 != main_~p4~0#1); 2351#L170-1 assume !(0 != main_~p5~0#1); 2350#L175-1 assume !(0 != main_~p6~0#1); 2348#L180-1 assume !(0 != main_~p7~0#1); 2344#L185-1 assume !(0 != main_~p8~0#1); 2339#L190-1 assume !(0 != main_~p9~0#1); 2333#L195-1 assume !(0 != main_~p10~0#1); 2282#L200-1 assume !(0 != main_~p11~0#1); 2280#L205-1 assume !(0 != main_~p12~0#1); 2274#L210-1 assume !(0 != main_~p13~0#1); 2270#L215-1 assume !(0 != main_~p14~0#1); 2260#L220-1 assume !(0 != main_~p15~0#1); 2150#L225-1 [2021-11-20 06:44:36,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:44:36,016 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2021-11-20 06:44:36,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:44:36,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098859549] [2021-11-20 06:44:36,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:44:36,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:44:36,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:44:36,030 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:44:36,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:44:36,040 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:44:36,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:44:36,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1163689094, now seen corresponding path program 1 times [2021-11-20 06:44:36,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:44:36,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850938688] [2021-11-20 06:44:36,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:44:36,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:44:36,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:44:36,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:44:36,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:44:36,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850938688] [2021-11-20 06:44:36,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850938688] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:44:36,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:44:36,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:44:36,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401710852] [2021-11-20 06:44:36,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:44:36,078 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-20 06:44:36,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:44:36,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:44:36,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:44:36,079 INFO L87 Difference]: Start difference. First operand 722 states and 1138 transitions. cyclomatic complexity: 432 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:44:36,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:44:36,109 INFO L93 Difference]: Finished difference Result 1426 states and 2226 transitions. [2021-11-20 06:44:36,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:44:36,110 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1426 states and 2226 transitions. [2021-11-20 06:44:36,165 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 1424 [2021-11-20 06:44:36,181 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1426 states to 1426 states and 2226 transitions. [2021-11-20 06:44:36,181 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1426 [2021-11-20 06:44:36,183 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1426 [2021-11-20 06:44:36,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1426 states and 2226 transitions. [2021-11-20 06:44:36,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:44:36,186 INFO L681 BuchiCegarLoop]: Abstraction has 1426 states and 2226 transitions. [2021-11-20 06:44:36,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1426 states and 2226 transitions. [2021-11-20 06:44:36,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1426 to 1426. [2021-11-20 06:44:36,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 1426 states have (on average 1.5610098176718092) internal successors, (2226), 1425 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:44:36,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 2226 transitions. [2021-11-20 06:44:36,262 INFO L704 BuchiCegarLoop]: Abstraction has 1426 states and 2226 transitions. [2021-11-20 06:44:36,263 INFO L587 BuchiCegarLoop]: Abstraction has 1426 states and 2226 transitions. [2021-11-20 06:44:36,263 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-11-20 06:44:36,263 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1426 states and 2226 transitions. [2021-11-20 06:44:36,274 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 1424 [2021-11-20 06:44:36,274 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:44:36,274 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:44:36,275 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-20 06:44:36,275 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:44:36,275 INFO L791 eck$LassoCheckResult]: Stem: 4313#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 4305#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 4306#L225-1 [2021-11-20 06:44:36,275 INFO L793 eck$LassoCheckResult]: Loop: 4306#L225-1 assume !false;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 4520#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 4521#L93 assume !(0 != main_~p1~0#1); 4734#L93-2 assume !(0 != main_~p2~0#1); 4733#L97-1 assume !(0 != main_~p3~0#1); 4731#L101-1 assume !(0 != main_~p4~0#1); 4728#L105-1 assume !(0 != main_~p5~0#1); 4724#L109-1 assume !(0 != main_~p6~0#1); 4722#L113-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 4720#L117-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 4718#L121-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 4716#L125-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 4714#L129-1 assume !(0 != main_~p11~0#1); 4712#L133-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 4710#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 4708#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 4706#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 4703#L149-1 assume !(0 != main_~p1~0#1); 4704#L155-1 assume !(0 != main_~p2~0#1); 4753#L160-1 assume !(0 != main_~p3~0#1); 4654#L165-1 assume !(0 != main_~p4~0#1); 4655#L170-1 assume !(0 != main_~p5~0#1); 4643#L175-1 assume !(0 != main_~p6~0#1); 4645#L180-1 assume !(0 != main_~p7~0#1); 4627#L185-1 assume !(0 != main_~p8~0#1); 4628#L190-1 assume !(0 != main_~p9~0#1); 4612#L195-1 assume !(0 != main_~p10~0#1); 4611#L200-1 assume !(0 != main_~p11~0#1); 4595#L205-1 assume !(0 != main_~p12~0#1); 4587#L210-1 assume !(0 != main_~p13~0#1); 4586#L215-1 assume !(0 != main_~p14~0#1); 4540#L220-1 assume !(0 != main_~p15~0#1); 4306#L225-1 [2021-11-20 06:44:36,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:44:36,276 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 6 times [2021-11-20 06:44:36,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:44:36,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880824474] [2021-11-20 06:44:36,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:44:36,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:44:36,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:44:36,283 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:44:36,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:44:36,298 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:44:36,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:44:36,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1304237704, now seen corresponding path program 1 times [2021-11-20 06:44:36,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:44:36,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521404394] [2021-11-20 06:44:36,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:44:36,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:44:36,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:44:36,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:44:36,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:44:36,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521404394] [2021-11-20 06:44:36,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521404394] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:44:36,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:44:36,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:44:36,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146139753] [2021-11-20 06:44:36,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:44:36,372 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-20 06:44:36,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:44:36,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:44:36,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:44:36,373 INFO L87 Difference]: Start difference. First operand 1426 states and 2226 transitions. cyclomatic complexity: 832 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:44:36,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:44:36,406 INFO L93 Difference]: Finished difference Result 2818 states and 4354 transitions. [2021-11-20 06:44:36,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:44:36,407 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2818 states and 4354 transitions. [2021-11-20 06:44:36,450 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 2816 [2021-11-20 06:44:36,480 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2818 states to 2818 states and 4354 transitions. [2021-11-20 06:44:36,481 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2818 [2021-11-20 06:44:36,484 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2818 [2021-11-20 06:44:36,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2818 states and 4354 transitions. [2021-11-20 06:44:36,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:44:36,490 INFO L681 BuchiCegarLoop]: Abstraction has 2818 states and 4354 transitions. [2021-11-20 06:44:36,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2818 states and 4354 transitions. [2021-11-20 06:44:36,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2818 to 2818. [2021-11-20 06:44:36,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2818 states, 2818 states have (on average 1.5450674237047552) internal successors, (4354), 2817 states have internal predecessors, (4354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:44:36,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2818 states to 2818 states and 4354 transitions. [2021-11-20 06:44:36,597 INFO L704 BuchiCegarLoop]: Abstraction has 2818 states and 4354 transitions. [2021-11-20 06:44:36,597 INFO L587 BuchiCegarLoop]: Abstraction has 2818 states and 4354 transitions. [2021-11-20 06:44:36,599 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-11-20 06:44:36,600 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2818 states and 4354 transitions. [2021-11-20 06:44:36,621 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 2816 [2021-11-20 06:44:36,621 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:44:36,621 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:44:36,624 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-20 06:44:36,624 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:44:36,625 INFO L791 eck$LassoCheckResult]: Stem: 8576#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 8562#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 8563#L225-1 [2021-11-20 06:44:36,626 INFO L793 eck$LassoCheckResult]: Loop: 8563#L225-1 assume !false;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 8727#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 8725#L93 assume !(0 != main_~p1~0#1); 8724#L93-2 assume !(0 != main_~p2~0#1); 8718#L97-1 assume !(0 != main_~p3~0#1); 8719#L101-1 assume !(0 != main_~p4~0#1); 8825#L105-1 assume !(0 != main_~p5~0#1); 8822#L109-1 assume !(0 != main_~p6~0#1); 8818#L113-1 assume !(0 != main_~p7~0#1); 8816#L117-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 8815#L121-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 8812#L125-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 8809#L129-1 assume !(0 != main_~p11~0#1); 8806#L133-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 8802#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 8798#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 8793#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 8787#L149-1 assume !(0 != main_~p1~0#1); 8781#L155-1 assume !(0 != main_~p2~0#1); 8776#L160-1 assume !(0 != main_~p3~0#1); 8769#L165-1 assume !(0 != main_~p4~0#1); 8763#L170-1 assume !(0 != main_~p5~0#1); 8758#L175-1 assume !(0 != main_~p6~0#1); 8756#L180-1 assume !(0 != main_~p7~0#1); 8750#L185-1 assume !(0 != main_~p8~0#1); 8747#L190-1 assume !(0 != main_~p9~0#1); 8743#L195-1 assume !(0 != main_~p10~0#1); 8737#L200-1 assume !(0 != main_~p11~0#1); 8735#L205-1 assume !(0 != main_~p12~0#1); 8733#L210-1 assume !(0 != main_~p13~0#1); 8731#L215-1 assume !(0 != main_~p14~0#1); 8729#L220-1 assume !(0 != main_~p15~0#1); 8563#L225-1 [2021-11-20 06:44:36,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:44:36,627 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 7 times [2021-11-20 06:44:36,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:44:36,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898398469] [2021-11-20 06:44:36,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:44:36,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:44:36,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:44:36,636 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:44:36,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:44:36,657 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:44:36,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:44:36,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1170224198, now seen corresponding path program 1 times [2021-11-20 06:44:36,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:44:36,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305405103] [2021-11-20 06:44:36,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:44:36,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:44:36,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:44:36,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:44:36,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:44:36,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305405103] [2021-11-20 06:44:36,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305405103] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:44:36,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:44:36,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:44:36,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257879992] [2021-11-20 06:44:36,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:44:36,709 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-20 06:44:36,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:44:36,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:44:36,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:44:36,710 INFO L87 Difference]: Start difference. First operand 2818 states and 4354 transitions. cyclomatic complexity: 1600 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:44:36,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:44:36,762 INFO L93 Difference]: Finished difference Result 5570 states and 8514 transitions. [2021-11-20 06:44:36,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:44:36,765 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 5570 states and 8514 transitions. [2021-11-20 06:44:36,826 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 5568 [2021-11-20 06:44:36,871 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 5570 states to 5570 states and 8514 transitions. [2021-11-20 06:44:36,871 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5570 [2021-11-20 06:44:36,879 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5570 [2021-11-20 06:44:36,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5570 states and 8514 transitions. [2021-11-20 06:44:36,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:44:36,887 INFO L681 BuchiCegarLoop]: Abstraction has 5570 states and 8514 transitions. [2021-11-20 06:44:36,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5570 states and 8514 transitions. [2021-11-20 06:44:37,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5570 to 5570. [2021-11-20 06:44:37,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5570 states, 5570 states have (on average 1.5285457809694794) internal successors, (8514), 5569 states have internal predecessors, (8514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:44:37,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5570 states to 5570 states and 8514 transitions. [2021-11-20 06:44:37,076 INFO L704 BuchiCegarLoop]: Abstraction has 5570 states and 8514 transitions. [2021-11-20 06:44:37,076 INFO L587 BuchiCegarLoop]: Abstraction has 5570 states and 8514 transitions. [2021-11-20 06:44:37,076 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-11-20 06:44:37,076 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5570 states and 8514 transitions. [2021-11-20 06:44:37,107 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 5568 [2021-11-20 06:44:37,108 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:44:37,108 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:44:37,109 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-20 06:44:37,109 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:44:37,109 INFO L791 eck$LassoCheckResult]: Stem: 16963#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 16949#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 16950#L225-1 [2021-11-20 06:44:37,109 INFO L793 eck$LassoCheckResult]: Loop: 16950#L225-1 assume !false;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 17206#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 17200#L93 assume !(0 != main_~p1~0#1); 17196#L93-2 assume !(0 != main_~p2~0#1); 17193#L97-1 assume !(0 != main_~p3~0#1); 17187#L101-1 assume !(0 != main_~p4~0#1); 17181#L105-1 assume !(0 != main_~p5~0#1); 17177#L109-1 assume !(0 != main_~p6~0#1); 17172#L113-1 assume !(0 != main_~p7~0#1); 17166#L117-1 assume !(0 != main_~p8~0#1); 17167#L121-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 17154#L125-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 17155#L129-1 assume !(0 != main_~p11~0#1); 17146#L133-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 17147#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 17138#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 17139#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 17128#L149-1 assume !(0 != main_~p1~0#1); 17129#L155-1 assume !(0 != main_~p2~0#1); 17118#L160-1 assume !(0 != main_~p3~0#1); 17117#L165-1 assume !(0 != main_~p4~0#1); 17104#L170-1 assume !(0 != main_~p5~0#1); 17105#L175-1 assume !(0 != main_~p6~0#1); 17095#L180-1 assume !(0 != main_~p7~0#1); 17096#L185-1 assume !(0 != main_~p8~0#1); 17248#L190-1 assume !(0 != main_~p9~0#1); 17244#L195-1 assume !(0 != main_~p10~0#1); 17240#L200-1 assume !(0 != main_~p11~0#1); 17234#L205-1 assume !(0 != main_~p12~0#1); 17228#L210-1 assume !(0 != main_~p13~0#1); 17222#L215-1 assume !(0 != main_~p14~0#1); 17216#L220-1 assume !(0 != main_~p15~0#1); 16950#L225-1 [2021-11-20 06:44:37,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:44:37,110 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 8 times [2021-11-20 06:44:37,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:44:37,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247967999] [2021-11-20 06:44:37,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:44:37,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:44:37,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:44:37,116 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:44:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:44:37,121 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:44:37,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:44:37,122 INFO L85 PathProgramCache]: Analyzing trace with hash -635214136, now seen corresponding path program 1 times [2021-11-20 06:44:37,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:44:37,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912505333] [2021-11-20 06:44:37,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:44:37,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:44:37,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:44:37,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:44:37,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:44:37,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912505333] [2021-11-20 06:44:37,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912505333] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:44:37,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:44:37,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:44:37,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679514744] [2021-11-20 06:44:37,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:44:37,146 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-20 06:44:37,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:44:37,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:44:37,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:44:37,147 INFO L87 Difference]: Start difference. First operand 5570 states and 8514 transitions. cyclomatic complexity: 3072 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:44:37,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:44:37,265 INFO L93 Difference]: Finished difference Result 11010 states and 16642 transitions. [2021-11-20 06:44:37,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:44:37,266 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11010 states and 16642 transitions. [2021-11-20 06:44:37,332 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 11008 [2021-11-20 06:44:37,476 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11010 states to 11010 states and 16642 transitions. [2021-11-20 06:44:37,476 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11010 [2021-11-20 06:44:37,483 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11010 [2021-11-20 06:44:37,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11010 states and 16642 transitions. [2021-11-20 06:44:37,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:44:37,512 INFO L681 BuchiCegarLoop]: Abstraction has 11010 states and 16642 transitions. [2021-11-20 06:44:37,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11010 states and 16642 transitions. [2021-11-20 06:44:37,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11010 to 11010. [2021-11-20 06:44:37,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11010 states, 11010 states have (on average 1.5115349682107175) internal successors, (16642), 11009 states have internal predecessors, (16642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:44:37,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11010 states to 11010 states and 16642 transitions. [2021-11-20 06:44:37,933 INFO L704 BuchiCegarLoop]: Abstraction has 11010 states and 16642 transitions. [2021-11-20 06:44:37,933 INFO L587 BuchiCegarLoop]: Abstraction has 11010 states and 16642 transitions. [2021-11-20 06:44:37,933 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-11-20 06:44:37,933 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11010 states and 16642 transitions. [2021-11-20 06:44:38,009 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 11008 [2021-11-20 06:44:38,009 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:44:38,010 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:44:38,010 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-20 06:44:38,010 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:44:38,011 INFO L791 eck$LassoCheckResult]: Stem: 33547#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 33535#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 33536#L225-1 [2021-11-20 06:44:38,011 INFO L793 eck$LassoCheckResult]: Loop: 33536#L225-1 assume !false;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 34190#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 34191#L93 assume !(0 != main_~p1~0#1); 34313#L93-2 assume !(0 != main_~p2~0#1); 34311#L97-1 assume !(0 != main_~p3~0#1); 34307#L101-1 assume !(0 != main_~p4~0#1); 34304#L105-1 assume !(0 != main_~p5~0#1); 34302#L109-1 assume !(0 != main_~p6~0#1); 34298#L113-1 assume !(0 != main_~p7~0#1); 34294#L117-1 assume !(0 != main_~p8~0#1); 34290#L121-1 assume !(0 != main_~p9~0#1); 34288#L125-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 34286#L129-1 assume !(0 != main_~p11~0#1); 34284#L133-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 34282#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 34280#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 34278#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 34274#L149-1 assume !(0 != main_~p1~0#1); 34270#L155-1 assume !(0 != main_~p2~0#1); 34267#L160-1 assume !(0 != main_~p3~0#1); 34262#L165-1 assume !(0 != main_~p4~0#1); 34258#L170-1 assume !(0 != main_~p5~0#1); 34256#L175-1 assume !(0 != main_~p6~0#1); 34233#L180-1 assume !(0 != main_~p7~0#1); 34234#L185-1 assume !(0 != main_~p8~0#1); 34227#L190-1 assume !(0 != main_~p9~0#1); 34229#L195-1 assume !(0 != main_~p10~0#1); 34223#L200-1 assume !(0 != main_~p11~0#1); 34222#L205-1 assume !(0 != main_~p12~0#1); 34217#L210-1 assume !(0 != main_~p13~0#1); 34216#L215-1 assume !(0 != main_~p14~0#1); 34208#L220-1 assume !(0 != main_~p15~0#1); 33536#L225-1 [2021-11-20 06:44:38,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:44:38,012 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 9 times [2021-11-20 06:44:38,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:44:38,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675460529] [2021-11-20 06:44:38,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:44:38,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:44:38,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:44:38,017 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:44:38,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:44:38,023 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:44:38,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:44:38,024 INFO L85 PathProgramCache]: Analyzing trace with hash -416359418, now seen corresponding path program 1 times [2021-11-20 06:44:38,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:44:38,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820120932] [2021-11-20 06:44:38,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:44:38,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:44:38,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:44:38,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:44:38,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:44:38,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820120932] [2021-11-20 06:44:38,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820120932] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:44:38,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:44:38,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:44:38,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108958205] [2021-11-20 06:44:38,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:44:38,051 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-20 06:44:38,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:44:38,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:44:38,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:44:38,053 INFO L87 Difference]: Start difference. First operand 11010 states and 16642 transitions. cyclomatic complexity: 5888 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:44:38,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:44:38,183 INFO L93 Difference]: Finished difference Result 21762 states and 32514 transitions. [2021-11-20 06:44:38,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:44:38,184 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21762 states and 32514 transitions. [2021-11-20 06:44:38,482 INFO L131 ngComponentsAnalysis]: Automaton has 512 accepting balls. 21760 [2021-11-20 06:44:38,562 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21762 states to 21762 states and 32514 transitions. [2021-11-20 06:44:38,562 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21762 [2021-11-20 06:44:38,578 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21762 [2021-11-20 06:44:38,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21762 states and 32514 transitions. [2021-11-20 06:44:38,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:44:38,601 INFO L681 BuchiCegarLoop]: Abstraction has 21762 states and 32514 transitions. [2021-11-20 06:44:38,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21762 states and 32514 transitions. [2021-11-20 06:44:38,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21762 to 21762. [2021-11-20 06:44:39,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21762 states, 21762 states have (on average 1.4940722360077199) internal successors, (32514), 21761 states have internal predecessors, (32514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:44:39,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21762 states to 21762 states and 32514 transitions. [2021-11-20 06:44:39,090 INFO L704 BuchiCegarLoop]: Abstraction has 21762 states and 32514 transitions. [2021-11-20 06:44:39,091 INFO L587 BuchiCegarLoop]: Abstraction has 21762 states and 32514 transitions. [2021-11-20 06:44:39,091 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-11-20 06:44:39,091 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21762 states and 32514 transitions. [2021-11-20 06:44:39,186 INFO L131 ngComponentsAnalysis]: Automaton has 512 accepting balls. 21760 [2021-11-20 06:44:39,186 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:44:39,187 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:44:39,187 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-20 06:44:39,188 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:44:39,188 INFO L791 eck$LassoCheckResult]: Stem: 66322#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 66310#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 66311#L225-1 [2021-11-20 06:44:39,188 INFO L793 eck$LassoCheckResult]: Loop: 66311#L225-1 assume !false;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 66629#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 66630#L93 assume !(0 != main_~p1~0#1); 66617#L93-2 assume !(0 != main_~p2~0#1); 66619#L97-1 assume !(0 != main_~p3~0#1); 66606#L101-1 assume !(0 != main_~p4~0#1); 66608#L105-1 assume !(0 != main_~p5~0#1); 66710#L109-1 assume !(0 != main_~p6~0#1); 66708#L113-1 assume !(0 != main_~p7~0#1); 66705#L117-1 assume !(0 != main_~p8~0#1); 66702#L121-1 assume !(0 != main_~p9~0#1); 66700#L125-1 assume !(0 != main_~p10~0#1); 66699#L129-1 assume !(0 != main_~p11~0#1); 66698#L133-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 66697#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 66696#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 66694#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 66691#L149-1 assume !(0 != main_~p1~0#1); 66688#L155-1 assume !(0 != main_~p2~0#1); 66686#L160-1 assume !(0 != main_~p3~0#1); 66530#L165-1 assume !(0 != main_~p4~0#1); 66531#L170-1 assume !(0 != main_~p5~0#1); 66516#L175-1 assume !(0 != main_~p6~0#1); 66517#L180-1 assume !(0 != main_~p7~0#1); 66683#L185-1 assume !(0 != main_~p8~0#1); 66671#L190-1 assume !(0 != main_~p9~0#1); 66673#L195-1 assume !(0 != main_~p10~0#1); 66661#L200-1 assume !(0 != main_~p11~0#1); 66660#L205-1 assume !(0 != main_~p12~0#1); 66651#L210-1 assume !(0 != main_~p13~0#1); 66650#L215-1 assume !(0 != main_~p14~0#1); 66639#L220-1 assume !(0 != main_~p15~0#1); 66311#L225-1 [2021-11-20 06:44:39,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:44:39,189 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 10 times [2021-11-20 06:44:39,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:44:39,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549784995] [2021-11-20 06:44:39,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:44:39,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:44:39,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:44:39,198 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:44:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:44:39,212 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:44:39,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:44:39,214 INFO L85 PathProgramCache]: Analyzing trace with hash 6342408, now seen corresponding path program 1 times [2021-11-20 06:44:39,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:44:39,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691141924] [2021-11-20 06:44:39,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:44:39,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:44:39,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:44:39,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:44:39,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:44:39,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691141924] [2021-11-20 06:44:39,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691141924] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:44:39,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:44:39,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:44:39,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440144655] [2021-11-20 06:44:39,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:44:39,248 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-20 06:44:39,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:44:39,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:44:39,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:44:39,250 INFO L87 Difference]: Start difference. First operand 21762 states and 32514 transitions. cyclomatic complexity: 11264 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:44:39,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:44:39,570 INFO L93 Difference]: Finished difference Result 43010 states and 63490 transitions. [2021-11-20 06:44:39,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:44:39,572 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43010 states and 63490 transitions. [2021-11-20 06:44:39,754 INFO L131 ngComponentsAnalysis]: Automaton has 1024 accepting balls. 43008 [2021-11-20 06:44:40,020 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43010 states to 43010 states and 63490 transitions. [2021-11-20 06:44:40,020 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 43010 [2021-11-20 06:44:40,047 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43010 [2021-11-20 06:44:40,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43010 states and 63490 transitions. [2021-11-20 06:44:40,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:44:40,086 INFO L681 BuchiCegarLoop]: Abstraction has 43010 states and 63490 transitions. [2021-11-20 06:44:40,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43010 states and 63490 transitions. [2021-11-20 06:44:40,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43010 to 43010. [2021-11-20 06:44:40,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43010 states, 43010 states have (on average 1.4761683329458266) internal successors, (63490), 43009 states have internal predecessors, (63490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:44:41,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43010 states to 43010 states and 63490 transitions. [2021-11-20 06:44:41,053 INFO L704 BuchiCegarLoop]: Abstraction has 43010 states and 63490 transitions. [2021-11-20 06:44:41,053 INFO L587 BuchiCegarLoop]: Abstraction has 43010 states and 63490 transitions. [2021-11-20 06:44:41,053 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-11-20 06:44:41,053 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 43010 states and 63490 transitions. [2021-11-20 06:44:41,187 INFO L131 ngComponentsAnalysis]: Automaton has 1024 accepting balls. 43008 [2021-11-20 06:44:41,187 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:44:41,187 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:44:41,188 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-20 06:44:41,296 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:44:41,311 INFO L791 eck$LassoCheckResult]: Stem: 131098#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 131087#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 131088#L225-1 [2021-11-20 06:44:41,311 INFO L793 eck$LassoCheckResult]: Loop: 131088#L225-1 assume !false;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 131568#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 131565#L93 assume !(0 != main_~p1~0#1); 131561#L93-2 assume !(0 != main_~p2~0#1); 131558#L97-1 assume !(0 != main_~p3~0#1); 131547#L101-1 assume !(0 != main_~p4~0#1); 131536#L105-1 assume !(0 != main_~p5~0#1); 131527#L109-1 assume !(0 != main_~p6~0#1); 131517#L113-1 assume !(0 != main_~p7~0#1); 131511#L117-1 assume !(0 != main_~p8~0#1); 131505#L121-1 assume !(0 != main_~p9~0#1); 131498#L125-1 assume !(0 != main_~p10~0#1); 131493#L129-1 assume !(0 != main_~p11~0#1); 131423#L133-1 assume !(0 != main_~p12~0#1); 131424#L137-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 131409#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 131410#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 131392#L149-1 assume !(0 != main_~p1~0#1); 131393#L155-1 assume !(0 != main_~p2~0#1); 131373#L160-1 assume !(0 != main_~p3~0#1); 131372#L165-1 assume !(0 != main_~p4~0#1); 131349#L170-1 assume !(0 != main_~p5~0#1); 131350#L175-1 assume !(0 != main_~p6~0#1); 131327#L180-1 assume !(0 != main_~p7~0#1); 131328#L185-1 assume !(0 != main_~p8~0#1); 131309#L190-1 assume !(0 != main_~p9~0#1); 131311#L195-1 assume !(0 != main_~p10~0#1); 131469#L200-1 assume !(0 != main_~p11~0#1); 131464#L205-1 assume !(0 != main_~p12~0#1); 131465#L210-1 assume !(0 != main_~p13~0#1); 131576#L215-1 assume !(0 != main_~p14~0#1); 131573#L220-1 assume !(0 != main_~p15~0#1); 131088#L225-1 [2021-11-20 06:44:41,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:44:41,311 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 11 times [2021-11-20 06:44:41,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:44:41,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70112941] [2021-11-20 06:44:41,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:44:41,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:44:41,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:44:41,315 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:44:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:44:41,318 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:44:41,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:44:41,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1682601334, now seen corresponding path program 1 times [2021-11-20 06:44:41,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:44:41,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262453929] [2021-11-20 06:44:41,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:44:41,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:44:41,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:44:41,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:44:41,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:44:41,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262453929] [2021-11-20 06:44:41,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262453929] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:44:41,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:44:41,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:44:41,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837568167] [2021-11-20 06:44:41,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:44:41,340 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-20 06:44:41,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:44:41,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:44:41,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:44:41,341 INFO L87 Difference]: Start difference. First operand 43010 states and 63490 transitions. cyclomatic complexity: 21504 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:44:41,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:44:41,539 INFO L93 Difference]: Finished difference Result 84994 states and 123906 transitions. [2021-11-20 06:44:41,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:44:41,540 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84994 states and 123906 transitions. [2021-11-20 06:44:42,015 INFO L131 ngComponentsAnalysis]: Automaton has 2048 accepting balls. 84992 [2021-11-20 06:44:42,446 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84994 states to 84994 states and 123906 transitions. [2021-11-20 06:44:42,446 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 84994 [2021-11-20 06:44:42,481 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 84994 [2021-11-20 06:44:42,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84994 states and 123906 transitions. [2021-11-20 06:44:42,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:44:42,560 INFO L681 BuchiCegarLoop]: Abstraction has 84994 states and 123906 transitions. [2021-11-20 06:44:42,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84994 states and 123906 transitions. [2021-11-20 06:44:43,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84994 to 84994. [2021-11-20 06:44:43,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84994 states, 84994 states have (on average 1.4578205520389675) internal successors, (123906), 84993 states have internal predecessors, (123906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:44:43,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84994 states to 84994 states and 123906 transitions. [2021-11-20 06:44:43,739 INFO L704 BuchiCegarLoop]: Abstraction has 84994 states and 123906 transitions. [2021-11-20 06:44:43,739 INFO L587 BuchiCegarLoop]: Abstraction has 84994 states and 123906 transitions. [2021-11-20 06:44:43,739 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-11-20 06:44:43,739 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 84994 states and 123906 transitions. [2021-11-20 06:44:44,191 INFO L131 ngComponentsAnalysis]: Automaton has 2048 accepting balls. 84992 [2021-11-20 06:44:44,191 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:44:44,191 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:44:44,193 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-20 06:44:44,193 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:44:44,193 INFO L791 eck$LassoCheckResult]: Stem: 259116#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 259105#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 259106#L225-1 [2021-11-20 06:44:44,193 INFO L793 eck$LassoCheckResult]: Loop: 259106#L225-1 assume !false;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 260093#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 260071#L93 assume !(0 != main_~p1~0#1); 260073#L93-2 assume !(0 != main_~p2~0#1); 260053#L97-1 assume !(0 != main_~p3~0#1); 260054#L101-1 assume !(0 != main_~p4~0#1); 260027#L105-1 assume !(0 != main_~p5~0#1); 260029#L109-1 assume !(0 != main_~p6~0#1); 260313#L113-1 assume !(0 != main_~p7~0#1); 260283#L117-1 assume !(0 != main_~p8~0#1); 260285#L121-1 assume !(0 != main_~p9~0#1); 260309#L125-1 assume !(0 != main_~p10~0#1); 260308#L129-1 assume !(0 != main_~p11~0#1); 260306#L133-1 assume !(0 != main_~p12~0#1); 260304#L137-1 assume !(0 != main_~p13~0#1); 260302#L141-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 260300#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 260297#L149-1 assume !(0 != main_~p1~0#1); 260293#L155-1 assume !(0 != main_~p2~0#1); 260290#L160-1 assume !(0 != main_~p3~0#1); 260225#L165-1 assume !(0 != main_~p4~0#1); 260226#L170-1 assume !(0 != main_~p5~0#1); 260202#L175-1 assume !(0 != main_~p6~0#1); 260204#L180-1 assume !(0 != main_~p7~0#1); 260181#L185-1 assume !(0 != main_~p8~0#1); 260182#L190-1 assume !(0 != main_~p9~0#1); 260176#L195-1 assume !(0 != main_~p10~0#1); 260178#L200-1 assume !(0 != main_~p11~0#1); 260125#L205-1 assume !(0 != main_~p12~0#1); 260127#L210-1 assume !(0 != main_~p13~0#1); 260112#L215-1 assume !(0 != main_~p14~0#1); 260111#L220-1 assume !(0 != main_~p15~0#1); 259106#L225-1 [2021-11-20 06:44:44,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:44:44,194 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 12 times [2021-11-20 06:44:44,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:44:44,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533333679] [2021-11-20 06:44:44,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:44:44,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:44:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:44:44,243 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:44:44,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:44:44,250 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:44:44,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:44:44,251 INFO L85 PathProgramCache]: Analyzing trace with hash 618221256, now seen corresponding path program 1 times [2021-11-20 06:44:44,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:44:44,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106428530] [2021-11-20 06:44:44,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:44:44,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:44:44,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:44:44,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:44:44,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:44:44,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106428530] [2021-11-20 06:44:44,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106428530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:44:44,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:44:44,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:44:44,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966094854] [2021-11-20 06:44:44,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:44:44,293 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-20 06:44:44,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:44:44,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:44:44,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:44:44,294 INFO L87 Difference]: Start difference. First operand 84994 states and 123906 transitions. cyclomatic complexity: 40960 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:44:44,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:44:44,683 INFO L93 Difference]: Finished difference Result 167938 states and 241666 transitions. [2021-11-20 06:44:44,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:44:44,686 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 167938 states and 241666 transitions. [2021-11-20 06:44:45,644 INFO L131 ngComponentsAnalysis]: Automaton has 4096 accepting balls. 167936 [2021-11-20 06:44:46,419 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 167938 states to 167938 states and 241666 transitions. [2021-11-20 06:44:46,419 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 167938 [2021-11-20 06:44:46,497 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 167938 [2021-11-20 06:44:46,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 167938 states and 241666 transitions. [2021-11-20 06:44:46,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:44:46,559 INFO L681 BuchiCegarLoop]: Abstraction has 167938 states and 241666 transitions. [2021-11-20 06:44:46,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167938 states and 241666 transitions. [2021-11-20 06:44:48,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167938 to 167938. [2021-11-20 06:44:48,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167938 states, 167938 states have (on average 1.4390191618335337) internal successors, (241666), 167937 states have internal predecessors, (241666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:44:48,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167938 states to 167938 states and 241666 transitions. [2021-11-20 06:44:48,852 INFO L704 BuchiCegarLoop]: Abstraction has 167938 states and 241666 transitions. [2021-11-20 06:44:48,853 INFO L587 BuchiCegarLoop]: Abstraction has 167938 states and 241666 transitions. [2021-11-20 06:44:48,853 INFO L425 BuchiCegarLoop]: ======== Iteration 13============ [2021-11-20 06:44:48,853 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 167938 states and 241666 transitions. [2021-11-20 06:44:49,211 INFO L131 ngComponentsAnalysis]: Automaton has 4096 accepting balls. 167936 [2021-11-20 06:44:49,211 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:44:49,211 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:44:49,213 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-20 06:44:49,213 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:44:49,213 INFO L791 eck$LassoCheckResult]: Stem: 512052#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 512037#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 512038#L225-1 [2021-11-20 06:44:49,213 INFO L793 eck$LassoCheckResult]: Loop: 512038#L225-1 assume !false;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 512371#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 512369#L93 assume !(0 != main_~p1~0#1); 512367#L93-2 assume !(0 != main_~p2~0#1); 512366#L97-1 assume !(0 != main_~p3~0#1); 512364#L101-1 assume !(0 != main_~p4~0#1); 512362#L105-1 assume !(0 != main_~p5~0#1); 512360#L109-1 assume !(0 != main_~p6~0#1); 512358#L113-1 assume !(0 != main_~p7~0#1); 512356#L117-1 assume !(0 != main_~p8~0#1); 512354#L121-1 assume !(0 != main_~p9~0#1); 512352#L125-1 assume !(0 != main_~p10~0#1); 512351#L129-1 assume !(0 != main_~p11~0#1); 512349#L133-1 assume !(0 != main_~p12~0#1); 512345#L137-1 assume !(0 != main_~p13~0#1); 512343#L141-1 assume !(0 != main_~p14~0#1); 512340#L145-1 assume 0 != main_~p15~0#1;main_~lk15~0#1 := 1; 512336#L149-1 assume !(0 != main_~p1~0#1); 512330#L155-1 assume !(0 != main_~p2~0#1); 512325#L160-1 assume !(0 != main_~p3~0#1); 512318#L165-1 assume !(0 != main_~p4~0#1); 512312#L170-1 assume !(0 != main_~p5~0#1); 512306#L175-1 assume !(0 != main_~p6~0#1); 512300#L180-1 assume !(0 != main_~p7~0#1); 512294#L185-1 assume !(0 != main_~p8~0#1); 512288#L190-1 assume !(0 != main_~p9~0#1); 512282#L195-1 assume !(0 != main_~p10~0#1); 512277#L200-1 assume !(0 != main_~p11~0#1); 512270#L205-1 assume !(0 != main_~p12~0#1); 512261#L210-1 assume !(0 != main_~p13~0#1); 512262#L215-1 assume !(0 != main_~p14~0#1); 512373#L220-1 assume !(0 != main_~p15~0#1); 512038#L225-1 [2021-11-20 06:44:49,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:44:49,214 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 13 times [2021-11-20 06:44:49,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:44:49,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618588027] [2021-11-20 06:44:49,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:44:49,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:44:49,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:44:49,220 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:44:49,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:44:49,224 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:44:49,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:44:49,225 INFO L85 PathProgramCache]: Analyzing trace with hash -970126646, now seen corresponding path program 1 times [2021-11-20 06:44:49,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:44:49,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093562569] [2021-11-20 06:44:49,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:44:49,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:44:49,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:44:49,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:44:49,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:44:49,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093562569] [2021-11-20 06:44:49,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093562569] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:44:49,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:44:49,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:44:49,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478396982] [2021-11-20 06:44:49,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:44:49,783 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-20 06:44:49,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:44:49,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:44:49,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:44:49,784 INFO L87 Difference]: Start difference. First operand 167938 states and 241666 transitions. cyclomatic complexity: 77824 Second operand has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:44:50,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:44:50,505 INFO L93 Difference]: Finished difference Result 331778 states and 471042 transitions. [2021-11-20 06:44:50,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:44:50,506 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 331778 states and 471042 transitions. [2021-11-20 06:44:52,324 INFO L131 ngComponentsAnalysis]: Automaton has 8192 accepting balls. 331776 [2021-11-20 06:44:53,567 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 331778 states to 331778 states and 471042 transitions. [2021-11-20 06:44:53,567 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 331778 [2021-11-20 06:44:53,652 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 331778 [2021-11-20 06:44:53,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 331778 states and 471042 transitions. [2021-11-20 06:44:53,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:44:53,748 INFO L681 BuchiCegarLoop]: Abstraction has 331778 states and 471042 transitions. [2021-11-20 06:44:53,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331778 states and 471042 transitions. [2021-11-20 06:44:57,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331778 to 331778. [2021-11-20 06:44:57,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331778 states, 331778 states have (on average 1.419750556094738) internal successors, (471042), 331777 states have internal predecessors, (471042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:44:58,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331778 states to 331778 states and 471042 transitions. [2021-11-20 06:44:58,025 INFO L704 BuchiCegarLoop]: Abstraction has 331778 states and 471042 transitions. [2021-11-20 06:44:58,025 INFO L587 BuchiCegarLoop]: Abstraction has 331778 states and 471042 transitions. [2021-11-20 06:44:58,025 INFO L425 BuchiCegarLoop]: ======== Iteration 14============ [2021-11-20 06:44:58,025 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 331778 states and 471042 transitions. [2021-11-20 06:44:59,732 INFO L131 ngComponentsAnalysis]: Automaton has 8192 accepting balls. 331776 [2021-11-20 06:44:59,732 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:44:59,732 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:44:59,736 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-20 06:44:59,736 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:44:59,736 INFO L791 eck$LassoCheckResult]: Stem: 1011773#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 1011759#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_#t~nondet19#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~p15~0#1, main_~lk15~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;main_~p15~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;havoc main_~lk15~0#1;havoc main_~cond~0#1; 1011760#L225-1 [2021-11-20 06:44:59,737 INFO L793 eck$LassoCheckResult]: Loop: 1011760#L225-1 assume !false;main_~cond~0#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1; 1012553#L58 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0;main_~lk15~0#1 := 0; 1012551#L93 assume !(0 != main_~p1~0#1); 1012549#L93-2 assume !(0 != main_~p2~0#1); 1012548#L97-1 assume !(0 != main_~p3~0#1); 1012546#L101-1 assume !(0 != main_~p4~0#1); 1012544#L105-1 assume !(0 != main_~p5~0#1); 1012545#L109-1 assume !(0 != main_~p6~0#1); 1012707#L113-1 assume !(0 != main_~p7~0#1); 1012702#L117-1 assume !(0 != main_~p8~0#1); 1012697#L121-1 assume !(0 != main_~p9~0#1); 1012691#L125-1 assume !(0 != main_~p10~0#1); 1012687#L129-1 assume !(0 != main_~p11~0#1); 1012683#L133-1 assume !(0 != main_~p12~0#1); 1012678#L137-1 assume !(0 != main_~p13~0#1); 1012674#L141-1 assume !(0 != main_~p14~0#1); 1012668#L145-1 assume !(0 != main_~p15~0#1); 1012661#L149-1 assume !(0 != main_~p1~0#1); 1012653#L155-1 assume !(0 != main_~p2~0#1); 1012642#L160-1 assume !(0 != main_~p3~0#1); 1012638#L165-1 assume !(0 != main_~p4~0#1); 1012636#L170-1 assume !(0 != main_~p5~0#1); 1012632#L175-1 assume !(0 != main_~p6~0#1); 1012628#L180-1 assume !(0 != main_~p7~0#1); 1012624#L185-1 assume !(0 != main_~p8~0#1); 1012620#L190-1 assume !(0 != main_~p9~0#1); 1012616#L195-1 assume !(0 != main_~p10~0#1); 1012570#L200-1 assume !(0 != main_~p11~0#1); 1012560#L205-1 assume !(0 != main_~p12~0#1); 1012558#L210-1 assume !(0 != main_~p13~0#1); 1012556#L215-1 assume !(0 != main_~p14~0#1); 1012554#L220-1 assume !(0 != main_~p15~0#1); 1011760#L225-1 [2021-11-20 06:44:59,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:44:59,737 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 14 times [2021-11-20 06:44:59,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:44:59,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348064206] [2021-11-20 06:44:59,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:44:59,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:44:59,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:44:59,741 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:44:59,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:44:59,744 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:44:59,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:44:59,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1991195000, now seen corresponding path program 1 times [2021-11-20 06:44:59,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:44:59,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925401550] [2021-11-20 06:44:59,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:44:59,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:44:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:44:59,749 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:44:59,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:44:59,763 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:44:59,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:44:59,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1845576266, now seen corresponding path program 1 times [2021-11-20 06:44:59,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:44:59,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619318248] [2021-11-20 06:44:59,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:44:59,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:44:59,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:44:59,768 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:44:59,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:44:59,778 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:45:00,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 06:45:00 BoogieIcfgContainer [2021-11-20 06:45:00,218 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-20 06:45:00,219 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 06:45:00,220 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 06:45:00,220 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 06:45:00,220 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:44:34" (3/4) ... [2021-11-20 06:45:00,223 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-11-20 06:45:00,266 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed15a-9154-4a5d-a1ab-28a4021ea285/bin/uautomizer-DQz5hQGWxF/witness.graphml [2021-11-20 06:45:00,266 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 06:45:00,267 INFO L158 Benchmark]: Toolchain (without parser) took 26379.04ms. Allocated memory was 92.3MB in the beginning and 13.9GB in the end (delta: 13.8GB). Free memory was 51.6MB in the beginning and 11.0GB in the end (delta: -10.9GB). Peak memory consumption was 2.9GB. Max. memory is 16.1GB. [2021-11-20 06:45:00,267 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 92.3MB. Free memory was 68.1MB in the beginning and 68.0MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:45:00,267 INFO L158 Benchmark]: CACSL2BoogieTranslator took 321.89ms. Allocated memory is still 92.3MB. Free memory was 51.4MB in the beginning and 66.9MB in the end (delta: -15.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-20 06:45:00,268 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.90ms. Allocated memory is still 92.3MB. Free memory was 66.9MB in the beginning and 64.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:45:00,268 INFO L158 Benchmark]: Boogie Preprocessor took 30.62ms. Allocated memory is still 92.3MB. Free memory was 64.9MB in the beginning and 63.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:45:00,269 INFO L158 Benchmark]: RCFGBuilder took 422.70ms. Allocated memory is still 92.3MB. Free memory was 63.6MB in the beginning and 50.6MB in the end (delta: 13.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-20 06:45:00,269 INFO L158 Benchmark]: BuchiAutomizer took 25496.41ms. Allocated memory was 92.3MB in the beginning and 13.9GB in the end (delta: 13.8GB). Free memory was 50.6MB in the beginning and 11.0GB in the end (delta: -10.9GB). Peak memory consumption was 2.9GB. Max. memory is 16.1GB. [2021-11-20 06:45:00,270 INFO L158 Benchmark]: Witness Printer took 46.47ms. Allocated memory is still 13.9GB. Free memory was 11.0GB in the beginning and 11.0GB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-20 06:45:00,272 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 92.3MB. Free memory was 68.1MB in the beginning and 68.0MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 321.89ms. Allocated memory is still 92.3MB. Free memory was 51.4MB in the beginning and 66.9MB in the end (delta: -15.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.90ms. Allocated memory is still 92.3MB. Free memory was 66.9MB in the beginning and 64.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.62ms. Allocated memory is still 92.3MB. Free memory was 64.9MB in the beginning and 63.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 422.70ms. Allocated memory is still 92.3MB. Free memory was 63.6MB in the beginning and 50.6MB in the end (delta: 13.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * BuchiAutomizer took 25496.41ms. Allocated memory was 92.3MB in the beginning and 13.9GB in the end (delta: 13.8GB). Free memory was 50.6MB in the beginning and 11.0GB in the end (delta: -10.9GB). Peak memory consumption was 2.9GB. Max. memory is 16.1GB. * Witness Printer took 46.47ms. Allocated memory is still 13.9GB. Free memory was 11.0GB in the beginning and 11.0GB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 13 terminating modules (13 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.13 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 331778 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 25.4s and 14 iterations. TraceHistogramMax:1. Analysis of lassos took 2.1s. Construction of modules took 0.1s. Büchi inclusion checks took 2.1s. Highest rank in rank-based complementation 0. Minimization of det autom 13. Minimization of nondet autom 0. Automata minimization 10.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 7.0s Buchi closure took 0.2s. Biggest automaton had 331778 states and ocurred in iteration 13. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 799 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 799 mSDsluCounter, 2497 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 967 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 65 IncrementalHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 1530 mSDtfsCounter, 65 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI13 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 56]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {p11=0, p13=0, lk5=0, p1=0, NULL=0, p9=0, NULL=1, cond=4, p12=0, p10=0, p14=0, p8=0, lk6=0, lk15=0, p3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@538f28ed=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@69f03702=0, p15=0, \result=0, lk7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1f1e3ee9=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@21261930=0, lk14=0, p2=0, lk8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@718fb3b3=4, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@13432032=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@74656f72=0, lk13=0, lk9=0, lk12=0, p5=0, lk2=0, p4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@b23499e=0, lk11=0, lk1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7fa7a80f=0, lk3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2141d51b=0, p7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@288c1eb1=0, lk10=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@e60e902=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@49867f25=0, p6=0, lk4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2e4e47f7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7d44a005=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@651b1578=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 56]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L8] int p1 = __VERIFIER_nondet_int(); [L9] int lk1; [L11] int p2 = __VERIFIER_nondet_int(); [L12] int lk2; [L14] int p3 = __VERIFIER_nondet_int(); [L15] int lk3; [L17] int p4 = __VERIFIER_nondet_int(); [L18] int lk4; [L20] int p5 = __VERIFIER_nondet_int(); [L21] int lk5; [L23] int p6 = __VERIFIER_nondet_int(); [L24] int lk6; [L26] int p7 = __VERIFIER_nondet_int(); [L27] int lk7; [L29] int p8 = __VERIFIER_nondet_int(); [L30] int lk8; [L32] int p9 = __VERIFIER_nondet_int(); [L33] int lk9; [L35] int p10 = __VERIFIER_nondet_int(); [L36] int lk10; [L38] int p11 = __VERIFIER_nondet_int(); [L39] int lk11; [L41] int p12 = __VERIFIER_nondet_int(); [L42] int lk12; [L44] int p13 = __VERIFIER_nondet_int(); [L45] int lk13; [L47] int p14 = __VERIFIER_nondet_int(); [L48] int lk14; [L50] int p15 = __VERIFIER_nondet_int(); [L51] int lk15; [L54] int cond; Loop: [L56] COND TRUE 1 [L57] cond = __VERIFIER_nondet_int() [L58] COND FALSE !(cond == 0) [L61] lk1 = 0 [L63] lk2 = 0 [L65] lk3 = 0 [L67] lk4 = 0 [L69] lk5 = 0 [L71] lk6 = 0 [L73] lk7 = 0 [L75] lk8 = 0 [L77] lk9 = 0 [L79] lk10 = 0 [L81] lk11 = 0 [L83] lk12 = 0 [L85] lk13 = 0 [L87] lk14 = 0 [L89] lk15 = 0 [L93] COND FALSE !(p1 != 0) [L97] COND FALSE !(p2 != 0) [L101] COND FALSE !(p3 != 0) [L105] COND FALSE !(p4 != 0) [L109] COND FALSE !(p5 != 0) [L113] COND FALSE !(p6 != 0) [L117] COND FALSE !(p7 != 0) [L121] COND FALSE !(p8 != 0) [L125] COND FALSE !(p9 != 0) [L129] COND FALSE !(p10 != 0) [L133] COND FALSE !(p11 != 0) [L137] COND FALSE !(p12 != 0) [L141] COND FALSE !(p13 != 0) [L145] COND FALSE !(p14 != 0) [L149] COND FALSE !(p15 != 0) [L155] COND FALSE !(p1 != 0) [L160] COND FALSE !(p2 != 0) [L165] COND FALSE !(p3 != 0) [L170] COND FALSE !(p4 != 0) [L175] COND FALSE !(p5 != 0) [L180] COND FALSE !(p6 != 0) [L185] COND FALSE !(p7 != 0) [L190] COND FALSE !(p8 != 0) [L195] COND FALSE !(p9 != 0) [L200] COND FALSE !(p10 != 0) [L205] COND FALSE !(p11 != 0) [L210] COND FALSE !(p12 != 0) [L215] COND FALSE !(p13 != 0) [L220] COND FALSE !(p14 != 0) [L225] COND FALSE !(p15 != 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-11-20 06:45:00,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_648ed15a-9154-4a5d-a1ab-28a4021ea285/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)