./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/locks/test_locks_10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5d5997f-1ac5-4b13-9e30-26e17c2a2c42/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5d5997f-1ac5-4b13-9e30-26e17c2a2c42/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5d5997f-1ac5-4b13-9e30-26e17c2a2c42/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5d5997f-1ac5-4b13-9e30-26e17c2a2c42/bin/uautomizer-DrprNOufMa/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/locks/test_locks_10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5d5997f-1ac5-4b13-9e30-26e17c2a2c42/bin/uautomizer-DrprNOufMa/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5d5997f-1ac5-4b13-9e30-26e17c2a2c42/bin/uautomizer-DrprNOufMa --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 c861265e1e1e27fe23877e47c41012b82996e1c7e91f362716a115cbf38b786b --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:25:19,457 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:25:19,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:25:19,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:25:19,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:25:19,482 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:25:19,483 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:25:19,485 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:25:19,486 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:25:19,487 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:25:19,488 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:25:19,489 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:25:19,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:25:19,490 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:25:19,491 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:25:19,492 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:25:19,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:25:19,494 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:25:19,495 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:25:19,497 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:25:19,498 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:25:19,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:25:19,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:25:19,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:25:19,504 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:25:19,504 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:25:19,504 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:25:19,505 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:25:19,505 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:25:19,506 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:25:19,507 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:25:19,507 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:25:19,508 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:25:19,508 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:25:19,509 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:25:19,510 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:25:19,510 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:25:19,510 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:25:19,510 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:25:19,511 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:25:19,511 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:25:19,512 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5d5997f-1ac5-4b13-9e30-26e17c2a2c42/bin/uautomizer-DrprNOufMa/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-06 18:25:19,530 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:25:19,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:25:19,530 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:25:19,530 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:25:19,531 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:25:19,531 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:25:19,531 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:25:19,531 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-06 18:25:19,531 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-06 18:25:19,532 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-06 18:25:19,532 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-06 18:25:19,532 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-06 18:25:19,532 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-06 18:25:19,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:25:19,532 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 18:25:19,532 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 18:25:19,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:25:19,532 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 18:25:19,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:25:19,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-06 18:25:19,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-06 18:25:19,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-06 18:25:19,533 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 18:25:19,533 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 18:25:19,533 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-06 18:25:19,533 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:25:19,533 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-06 18:25:19,533 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:25:19,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:25:19,534 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:25:19,534 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 18:25:19,534 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:25:19,535 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-06 18:25:19,535 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_b5d5997f-1ac5-4b13-9e30-26e17c2a2c42/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5d5997f-1ac5-4b13-9e30-26e17c2a2c42/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c861265e1e1e27fe23877e47c41012b82996e1c7e91f362716a115cbf38b786b [2021-12-06 18:25:19,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:25:19,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:25:19,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:25:19,739 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:25:19,740 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:25:19,741 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5d5997f-1ac5-4b13-9e30-26e17c2a2c42/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/locks/test_locks_10.c [2021-12-06 18:25:19,783 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5d5997f-1ac5-4b13-9e30-26e17c2a2c42/bin/uautomizer-DrprNOufMa/data/12aaadfca/5a9b84edab2849a0b2d1065296cea87d/FLAGd9389f4f6 [2021-12-06 18:25:20,219 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:25:20,219 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5d5997f-1ac5-4b13-9e30-26e17c2a2c42/sv-benchmarks/c/locks/test_locks_10.c [2021-12-06 18:25:20,225 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5d5997f-1ac5-4b13-9e30-26e17c2a2c42/bin/uautomizer-DrprNOufMa/data/12aaadfca/5a9b84edab2849a0b2d1065296cea87d/FLAGd9389f4f6 [2021-12-06 18:25:20,234 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5d5997f-1ac5-4b13-9e30-26e17c2a2c42/bin/uautomizer-DrprNOufMa/data/12aaadfca/5a9b84edab2849a0b2d1065296cea87d [2021-12-06 18:25:20,236 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:25:20,237 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:25:20,238 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:25:20,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:25:20,242 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:25:20,243 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:25:20" (1/1) ... [2021-12-06 18:25:20,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3aed0ab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:25:20, skipping insertion in model container [2021-12-06 18:25:20,244 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:25:20" (1/1) ... [2021-12-06 18:25:20,251 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:25:20,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:25:20,384 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_b5d5997f-1ac5-4b13-9e30-26e17c2a2c42/sv-benchmarks/c/locks/test_locks_10.c[3901,3914] [2021-12-06 18:25:20,385 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:25:20,392 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:25:20,409 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_b5d5997f-1ac5-4b13-9e30-26e17c2a2c42/sv-benchmarks/c/locks/test_locks_10.c[3901,3914] [2021-12-06 18:25:20,410 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:25:20,419 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:25:20,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:25:20 WrapperNode [2021-12-06 18:25:20,420 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:25:20,420 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:25:20,421 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:25:20,421 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:25:20,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:25:20" (1/1) ... [2021-12-06 18:25:20,431 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:25:20" (1/1) ... [2021-12-06 18:25:20,445 INFO L137 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 127 [2021-12-06 18:25:20,446 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:25:20,446 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:25:20,446 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:25:20,446 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:25:20,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:25:20" (1/1) ... [2021-12-06 18:25:20,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:25:20" (1/1) ... [2021-12-06 18:25:20,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:25:20" (1/1) ... [2021-12-06 18:25:20,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:25:20" (1/1) ... [2021-12-06 18:25:20,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:25:20" (1/1) ... [2021-12-06 18:25:20,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:25:20" (1/1) ... [2021-12-06 18:25:20,461 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:25:20" (1/1) ... [2021-12-06 18:25:20,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:25:20,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:25:20,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:25:20,463 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:25:20,464 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:25:20" (1/1) ... [2021-12-06 18:25:20,470 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 18:25:20,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5d5997f-1ac5-4b13-9e30-26e17c2a2c42/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:25:20,493 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5d5997f-1ac5-4b13-9e30-26e17c2a2c42/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 18:25:20,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5d5997f-1ac5-4b13-9e30-26e17c2a2c42/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-06 18:25:20,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 18:25:20,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:25:20,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:25:20,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 18:25:20,584 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:25:20,586 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:25:20,702 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:25:20,707 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:25:20,708 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 18:25:20,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:25:20 BoogieIcfgContainer [2021-12-06 18:25:20,709 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:25:20,710 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-06 18:25:20,710 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-06 18:25:20,713 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-06 18:25:20,713 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-06 18:25:20,714 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.12 06:25:20" (1/3) ... [2021-12-06 18:25:20,714 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@264db71e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.12 06:25:20, skipping insertion in model container [2021-12-06 18:25:20,715 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-06 18:25:20,715 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:25:20" (2/3) ... [2021-12-06 18:25:20,715 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@264db71e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.12 06:25:20, skipping insertion in model container [2021-12-06 18:25:20,715 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-06 18:25:20,715 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:25:20" (3/3) ... [2021-12-06 18:25:20,716 INFO L388 chiAutomizerObserver]: Analyzing ICFG test_locks_10.c [2021-12-06 18:25:20,750 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-06 18:25:20,750 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-06 18:25:20,751 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-06 18:25:20,751 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-06 18:25:20,751 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-06 18:25:20,751 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-06 18:25:20,751 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-06 18:25:20,751 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-06 18:25:20,764 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 39 states, 38 states have (on average 1.868421052631579) internal successors, (71), 38 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:25:20,780 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 32 [2021-12-06 18:25:20,781 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 18:25:20,781 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 18:25:20,786 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-06 18:25:20,786 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] [2021-12-06 18:25:20,786 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-06 18:25:20,786 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 39 states, 38 states have (on average 1.868421052631579) internal successors, (71), 38 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:25:20,791 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 32 [2021-12-06 18:25:20,791 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 18:25:20,791 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 18:25:20,792 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-06 18:25:20,792 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] [2021-12-06 18:25:20,797 INFO L791 eck$LassoCheckResult]: Stem: 24#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(16, 2);call #Ultimate.allocInit(12, 3); 9#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_~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_~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;havoc main_~cond~0#1; 30#L155-1true [2021-12-06 18:25:20,798 INFO L793 eck$LassoCheckResult]: Loop: 30#L155-1true assume !false;main_~cond~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1; 27#L43true 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; 31#L68true assume 0 != main_~p1~0#1;main_~lk1~0#1 := 1; 10#L68-2true assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 4#L72-1true assume !(0 != main_~p3~0#1); 19#L76-1true assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 18#L80-1true assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 32#L84-1true assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 20#L88-1true assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 7#L92-1true assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 5#L96-1true assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 8#L100-1true assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 39#L104-1true assume !(0 != main_~p1~0#1); 25#L110-1true assume !(0 != main_~p2~0#1); 34#L115-1true assume !(0 != main_~p3~0#1); 17#L120-1true assume !(0 != main_~p4~0#1); 29#L125-1true assume !(0 != main_~p5~0#1); 36#L130-1true assume !(0 != main_~p6~0#1); 16#L135-1true assume !(0 != main_~p7~0#1); 14#L140-1true assume !(0 != main_~p8~0#1); 40#L145-1true assume !(0 != main_~p9~0#1); 11#L150-1true assume !(0 != main_~p10~0#1); 30#L155-1true [2021-12-06 18:25:20,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:25:20,803 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-06 18:25:20,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:25:20,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713319471] [2021-12-06 18:25:20,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:25:20,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:25:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:25:20,876 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 18:25:20,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:25:20,897 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 18:25:20,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:25:20,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1693159719, now seen corresponding path program 1 times [2021-12-06 18:25:20,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:25:20,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244479304] [2021-12-06 18:25:20,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:25:20,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:25:20,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:25:20,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:25:20,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:25:20,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244479304] [2021-12-06 18:25:20,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244479304] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:25:20,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:25:20,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:25:20,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089005119] [2021-12-06 18:25:20,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:25:20,969 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-06 18:25:20,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:25:20,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:25:20,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:25:20,995 INFO L87 Difference]: Start difference. First operand has 39 states, 38 states have (on average 1.868421052631579) internal successors, (71), 38 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2021-12-06 18:25:21,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:25:21,020 INFO L93 Difference]: Finished difference Result 75 states and 130 transitions. [2021-12-06 18:25:21,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:25:21,026 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 75 states and 130 transitions. [2021-12-06 18:25:21,029 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 63 [2021-12-06 18:25:21,033 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 75 states to 65 states and 103 transitions. [2021-12-06 18:25:21,034 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 65 [2021-12-06 18:25:21,035 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 65 [2021-12-06 18:25:21,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 103 transitions. [2021-12-06 18:25:21,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:25:21,036 INFO L681 BuchiCegarLoop]: Abstraction has 65 states and 103 transitions. [2021-12-06 18:25:21,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states and 103 transitions. [2021-12-06 18:25:21,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-12-06 18:25:21,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 65 states have (on average 1.5846153846153845) internal successors, (103), 64 states have internal predecessors, (103), 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) [2021-12-06 18:25:21,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 103 transitions. [2021-12-06 18:25:21,061 INFO L704 BuchiCegarLoop]: Abstraction has 65 states and 103 transitions. [2021-12-06 18:25:21,061 INFO L587 BuchiCegarLoop]: Abstraction has 65 states and 103 transitions. [2021-12-06 18:25:21,061 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-06 18:25:21,061 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 65 states and 103 transitions. [2021-12-06 18:25:21,063 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 63 [2021-12-06 18:25:21,063 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 18:25:21,063 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 18:25:21,063 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-06 18:25:21,063 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] [2021-12-06 18:25:21,064 INFO L791 eck$LassoCheckResult]: Stem: 150#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(16, 2);call #Ultimate.allocInit(12, 3); 132#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_~cond~0#1; 133#L155-1 [2021-12-06 18:25:21,064 INFO L793 eck$LassoCheckResult]: Loop: 133#L155-1 assume !false;main_~cond~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1; 154#L43 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; 155#L68 assume !(0 != main_~p1~0#1); 134#L68-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 123#L72-1 assume !(0 != main_~p3~0#1); 124#L76-1 assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 145#L80-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 146#L84-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 167#L88-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 166#L92-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 125#L96-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 126#L100-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 131#L104-1 assume !(0 != main_~p1~0#1); 151#L110-1 assume !(0 != main_~p2~0#1); 152#L115-1 assume !(0 != main_~p3~0#1); 144#L120-1 assume !(0 != main_~p4~0#1); 128#L125-1 assume !(0 != main_~p5~0#1); 138#L130-1 assume !(0 != main_~p6~0#1); 143#L135-1 assume !(0 != main_~p7~0#1); 139#L140-1 assume !(0 != main_~p8~0#1); 140#L145-1 assume !(0 != main_~p9~0#1); 135#L150-1 assume !(0 != main_~p10~0#1); 133#L155-1 [2021-12-06 18:25:21,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:25:21,065 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2021-12-06 18:25:21,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:25:21,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122781056] [2021-12-06 18:25:21,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:25:21,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:25:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:25:21,072 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 18:25:21,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:25:21,079 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 18:25:21,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:25:21,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1784159127, now seen corresponding path program 1 times [2021-12-06 18:25:21,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:25:21,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439237774] [2021-12-06 18:25:21,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:25:21,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:25:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:25:21,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:25:21,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:25:21,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439237774] [2021-12-06 18:25:21,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439237774] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:25:21,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:25:21,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:25:21,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383685124] [2021-12-06 18:25:21,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:25:21,116 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-06 18:25:21,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:25:21,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:25:21,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:25:21,117 INFO L87 Difference]: Start difference. First operand 65 states and 103 transitions. cyclomatic complexity: 40 Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2021-12-06 18:25:21,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:25:21,139 INFO L93 Difference]: Finished difference Result 126 states and 198 transitions. [2021-12-06 18:25:21,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:25:21,140 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 126 states and 198 transitions. [2021-12-06 18:25:21,144 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 124 [2021-12-06 18:25:21,146 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 126 states to 126 states and 198 transitions. [2021-12-06 18:25:21,146 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 126 [2021-12-06 18:25:21,147 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 126 [2021-12-06 18:25:21,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 126 states and 198 transitions. [2021-12-06 18:25:21,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:25:21,148 INFO L681 BuchiCegarLoop]: Abstraction has 126 states and 198 transitions. [2021-12-06 18:25:21,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states and 198 transitions. [2021-12-06 18:25:21,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-12-06 18:25:21,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 126 states have (on average 1.5714285714285714) internal successors, (198), 125 states have internal predecessors, (198), 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) [2021-12-06 18:25:21,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 198 transitions. [2021-12-06 18:25:21,157 INFO L704 BuchiCegarLoop]: Abstraction has 126 states and 198 transitions. [2021-12-06 18:25:21,157 INFO L587 BuchiCegarLoop]: Abstraction has 126 states and 198 transitions. [2021-12-06 18:25:21,157 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-06 18:25:21,158 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 126 states and 198 transitions. [2021-12-06 18:25:21,159 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 124 [2021-12-06 18:25:21,160 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 18:25:21,160 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 18:25:21,160 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-06 18:25:21,160 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] [2021-12-06 18:25:21,160 INFO L791 eck$LassoCheckResult]: Stem: 347#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(16, 2);call #Ultimate.allocInit(12, 3); 328#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_~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_~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;havoc main_~cond~0#1; 329#L155-1 [2021-12-06 18:25:21,161 INFO L793 eck$LassoCheckResult]: Loop: 329#L155-1 assume !false;main_~cond~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1; 373#L43 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; 371#L68 assume !(0 != main_~p1~0#1); 369#L68-2 assume !(0 != main_~p2~0#1); 368#L72-1 assume !(0 != main_~p3~0#1); 367#L76-1 assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 366#L80-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 365#L84-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 364#L88-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 363#L92-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 362#L96-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 361#L100-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 359#L104-1 assume !(0 != main_~p1~0#1); 360#L110-1 assume !(0 != main_~p2~0#1); 391#L115-1 assume !(0 != main_~p3~0#1); 388#L120-1 assume !(0 != main_~p4~0#1); 385#L125-1 assume !(0 != main_~p5~0#1); 383#L130-1 assume !(0 != main_~p6~0#1); 381#L135-1 assume !(0 != main_~p7~0#1); 379#L140-1 assume !(0 != main_~p8~0#1); 377#L145-1 assume !(0 != main_~p9~0#1); 375#L150-1 assume !(0 != main_~p10~0#1); 329#L155-1 [2021-12-06 18:25:21,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:25:21,161 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2021-12-06 18:25:21,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:25:21,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741639078] [2021-12-06 18:25:21,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:25:21,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:25:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:25:21,168 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 18:25:21,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:25:21,174 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 18:25:21,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:25:21,175 INFO L85 PathProgramCache]: Analyzing trace with hash 95215385, now seen corresponding path program 1 times [2021-12-06 18:25:21,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:25:21,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725551993] [2021-12-06 18:25:21,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:25:21,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:25:21,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:25:21,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:25:21,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:25:21,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725551993] [2021-12-06 18:25:21,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725551993] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:25:21,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:25:21,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:25:21,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086816398] [2021-12-06 18:25:21,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:25:21,202 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-06 18:25:21,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:25:21,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:25:21,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:25:21,203 INFO L87 Difference]: Start difference. First operand 126 states and 198 transitions. cyclomatic complexity: 76 Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2021-12-06 18:25:21,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:25:21,218 INFO L93 Difference]: Finished difference Result 246 states and 382 transitions. [2021-12-06 18:25:21,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:25:21,219 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 246 states and 382 transitions. [2021-12-06 18:25:21,223 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 244 [2021-12-06 18:25:21,226 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 246 states to 246 states and 382 transitions. [2021-12-06 18:25:21,226 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 246 [2021-12-06 18:25:21,227 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 246 [2021-12-06 18:25:21,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 246 states and 382 transitions. [2021-12-06 18:25:21,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:25:21,228 INFO L681 BuchiCegarLoop]: Abstraction has 246 states and 382 transitions. [2021-12-06 18:25:21,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states and 382 transitions. [2021-12-06 18:25:21,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2021-12-06 18:25:21,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 246 states have (on average 1.5528455284552845) internal successors, (382), 245 states have internal predecessors, (382), 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) [2021-12-06 18:25:21,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 382 transitions. [2021-12-06 18:25:21,244 INFO L704 BuchiCegarLoop]: Abstraction has 246 states and 382 transitions. [2021-12-06 18:25:21,244 INFO L587 BuchiCegarLoop]: Abstraction has 246 states and 382 transitions. [2021-12-06 18:25:21,244 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-06 18:25:21,244 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 246 states and 382 transitions. [2021-12-06 18:25:21,246 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 244 [2021-12-06 18:25:21,246 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 18:25:21,246 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 18:25:21,246 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-06 18:25:21,246 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] [2021-12-06 18:25:21,246 INFO L791 eck$LassoCheckResult]: Stem: 729#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(16, 2);call #Ultimate.allocInit(12, 3); 706#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_~cond~0#1; 707#L155-1 [2021-12-06 18:25:21,247 INFO L793 eck$LassoCheckResult]: Loop: 707#L155-1 assume !false;main_~cond~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1; 776#L43 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; 773#L68 assume !(0 != main_~p1~0#1); 769#L68-2 assume !(0 != main_~p2~0#1); 767#L72-1 assume !(0 != main_~p3~0#1); 764#L76-1 assume !(0 != main_~p4~0#1); 765#L80-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 759#L84-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 760#L88-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 755#L92-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 756#L96-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 751#L100-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 752#L104-1 assume !(0 != main_~p1~0#1); 807#L110-1 assume !(0 != main_~p2~0#1); 805#L115-1 assume !(0 != main_~p3~0#1); 802#L120-1 assume !(0 != main_~p4~0#1); 799#L125-1 assume !(0 != main_~p5~0#1); 795#L130-1 assume !(0 != main_~p6~0#1); 791#L135-1 assume !(0 != main_~p7~0#1); 787#L140-1 assume !(0 != main_~p8~0#1); 783#L145-1 assume !(0 != main_~p9~0#1); 781#L150-1 assume !(0 != main_~p10~0#1); 707#L155-1 [2021-12-06 18:25:21,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:25:21,247 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2021-12-06 18:25:21,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:25:21,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194409921] [2021-12-06 18:25:21,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:25:21,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:25:21,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:25:21,253 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 18:25:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:25:21,258 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 18:25:21,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:25:21,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1493132517, now seen corresponding path program 1 times [2021-12-06 18:25:21,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:25:21,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043269504] [2021-12-06 18:25:21,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:25:21,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:25:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:25:21,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:25:21,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:25:21,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043269504] [2021-12-06 18:25:21,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043269504] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:25:21,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:25:21,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:25:21,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991866892] [2021-12-06 18:25:21,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:25:21,283 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-06 18:25:21,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:25:21,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:25:21,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:25:21,284 INFO L87 Difference]: Start difference. First operand 246 states and 382 transitions. cyclomatic complexity: 144 Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2021-12-06 18:25:21,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:25:21,299 INFO L93 Difference]: Finished difference Result 482 states and 738 transitions. [2021-12-06 18:25:21,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:25:21,300 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 482 states and 738 transitions. [2021-12-06 18:25:21,306 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 480 [2021-12-06 18:25:21,312 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 482 states to 482 states and 738 transitions. [2021-12-06 18:25:21,312 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 482 [2021-12-06 18:25:21,313 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 482 [2021-12-06 18:25:21,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 482 states and 738 transitions. [2021-12-06 18:25:21,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:25:21,316 INFO L681 BuchiCegarLoop]: Abstraction has 482 states and 738 transitions. [2021-12-06 18:25:21,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states and 738 transitions. [2021-12-06 18:25:21,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 482. [2021-12-06 18:25:21,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 482 states have (on average 1.5311203319502074) internal successors, (738), 481 states have internal predecessors, (738), 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) [2021-12-06 18:25:21,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 738 transitions. [2021-12-06 18:25:21,343 INFO L704 BuchiCegarLoop]: Abstraction has 482 states and 738 transitions. [2021-12-06 18:25:21,343 INFO L587 BuchiCegarLoop]: Abstraction has 482 states and 738 transitions. [2021-12-06 18:25:21,343 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-06 18:25:21,343 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 482 states and 738 transitions. [2021-12-06 18:25:21,346 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 480 [2021-12-06 18:25:21,346 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 18:25:21,346 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 18:25:21,347 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-06 18:25:21,347 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] [2021-12-06 18:25:21,347 INFO L791 eck$LassoCheckResult]: Stem: 1462#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(16, 2);call #Ultimate.allocInit(12, 3); 1440#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_~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_~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;havoc main_~cond~0#1; 1441#L155-1 [2021-12-06 18:25:21,347 INFO L793 eck$LassoCheckResult]: Loop: 1441#L155-1 assume !false;main_~cond~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1; 1511#L43 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; 1508#L68 assume !(0 != main_~p1~0#1); 1504#L68-2 assume !(0 != main_~p2~0#1); 1501#L72-1 assume !(0 != main_~p3~0#1); 1498#L76-1 assume !(0 != main_~p4~0#1); 1499#L80-1 assume !(0 != main_~p5~0#1); 1562#L84-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 1559#L88-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 1556#L92-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 1553#L96-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 1551#L100-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 1548#L104-1 assume !(0 != main_~p1~0#1); 1544#L110-1 assume !(0 != main_~p2~0#1); 1541#L115-1 assume !(0 != main_~p3~0#1); 1537#L120-1 assume !(0 != main_~p4~0#1); 1534#L125-1 assume !(0 != main_~p5~0#1); 1532#L130-1 assume !(0 != main_~p6~0#1); 1528#L135-1 assume !(0 != main_~p7~0#1); 1524#L140-1 assume !(0 != main_~p8~0#1); 1520#L145-1 assume !(0 != main_~p9~0#1); 1516#L150-1 assume !(0 != main_~p10~0#1); 1441#L155-1 [2021-12-06 18:25:21,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:25:21,348 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2021-12-06 18:25:21,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:25:21,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150662843] [2021-12-06 18:25:21,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:25:21,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:25:21,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:25:21,355 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 18:25:21,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:25:21,362 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 18:25:21,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:25:21,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1780766425, now seen corresponding path program 1 times [2021-12-06 18:25:21,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:25:21,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050231746] [2021-12-06 18:25:21,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:25:21,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:25:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:25:21,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:25:21,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:25:21,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050231746] [2021-12-06 18:25:21,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050231746] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:25:21,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:25:21,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:25:21,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719217228] [2021-12-06 18:25:21,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:25:21,387 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-06 18:25:21,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:25:21,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:25:21,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:25:21,388 INFO L87 Difference]: Start difference. First operand 482 states and 738 transitions. cyclomatic complexity: 272 Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2021-12-06 18:25:21,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:25:21,404 INFO L93 Difference]: Finished difference Result 946 states and 1426 transitions. [2021-12-06 18:25:21,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:25:21,405 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 946 states and 1426 transitions. [2021-12-06 18:25:21,414 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 944 [2021-12-06 18:25:21,422 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 946 states to 946 states and 1426 transitions. [2021-12-06 18:25:21,422 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 946 [2021-12-06 18:25:21,423 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 946 [2021-12-06 18:25:21,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 946 states and 1426 transitions. [2021-12-06 18:25:21,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:25:21,425 INFO L681 BuchiCegarLoop]: Abstraction has 946 states and 1426 transitions. [2021-12-06 18:25:21,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states and 1426 transitions. [2021-12-06 18:25:21,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 946. [2021-12-06 18:25:21,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 946 states have (on average 1.507399577167019) internal successors, (1426), 945 states have internal predecessors, (1426), 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) [2021-12-06 18:25:21,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1426 transitions. [2021-12-06 18:25:21,449 INFO L704 BuchiCegarLoop]: Abstraction has 946 states and 1426 transitions. [2021-12-06 18:25:21,450 INFO L587 BuchiCegarLoop]: Abstraction has 946 states and 1426 transitions. [2021-12-06 18:25:21,450 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-12-06 18:25:21,450 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 946 states and 1426 transitions. [2021-12-06 18:25:21,455 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 944 [2021-12-06 18:25:21,455 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 18:25:21,456 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 18:25:21,456 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-06 18:25:21,456 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] [2021-12-06 18:25:21,456 INFO L791 eck$LassoCheckResult]: Stem: 2899#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(16, 2);call #Ultimate.allocInit(12, 3); 2874#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_~cond~0#1; 2875#L155-1 [2021-12-06 18:25:21,456 INFO L793 eck$LassoCheckResult]: Loop: 2875#L155-1 assume !false;main_~cond~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1; 2948#L43 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; 2949#L68 assume !(0 != main_~p1~0#1); 3042#L68-2 assume !(0 != main_~p2~0#1); 3037#L72-1 assume !(0 != main_~p3~0#1); 3031#L76-1 assume !(0 != main_~p4~0#1); 3032#L80-1 assume !(0 != main_~p5~0#1); 3051#L84-1 assume !(0 != main_~p6~0#1); 3047#L88-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 3045#L92-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 3039#L96-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 3035#L100-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 3028#L104-1 assume !(0 != main_~p1~0#1); 3001#L110-1 assume !(0 != main_~p2~0#1); 2998#L115-1 assume !(0 != main_~p3~0#1); 2993#L120-1 assume !(0 != main_~p4~0#1); 2989#L125-1 assume !(0 != main_~p5~0#1); 2987#L130-1 assume !(0 != main_~p6~0#1); 2972#L135-1 assume !(0 != main_~p7~0#1); 2971#L140-1 assume !(0 != main_~p8~0#1); 3067#L145-1 assume !(0 != main_~p9~0#1); 2956#L150-1 assume !(0 != main_~p10~0#1); 2875#L155-1 [2021-12-06 18:25:21,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:25:21,457 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 6 times [2021-12-06 18:25:21,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:25:21,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71344731] [2021-12-06 18:25:21,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:25:21,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:25:21,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:25:21,462 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 18:25:21,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:25:21,468 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 18:25:21,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:25:21,468 INFO L85 PathProgramCache]: Analyzing trace with hash 500902747, now seen corresponding path program 1 times [2021-12-06 18:25:21,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:25:21,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951141297] [2021-12-06 18:25:21,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:25:21,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:25:21,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:25:21,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:25:21,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:25:21,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951141297] [2021-12-06 18:25:21,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951141297] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:25:21,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:25:21,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:25:21,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801471632] [2021-12-06 18:25:21,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:25:21,488 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-06 18:25:21,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:25:21,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:25:21,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:25:21,489 INFO L87 Difference]: Start difference. First operand 946 states and 1426 transitions. cyclomatic complexity: 512 Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2021-12-06 18:25:21,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:25:21,502 INFO L93 Difference]: Finished difference Result 1858 states and 2754 transitions. [2021-12-06 18:25:21,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:25:21,503 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1858 states and 2754 transitions. [2021-12-06 18:25:21,518 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 1856 [2021-12-06 18:25:21,530 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1858 states to 1858 states and 2754 transitions. [2021-12-06 18:25:21,530 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1858 [2021-12-06 18:25:21,531 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1858 [2021-12-06 18:25:21,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1858 states and 2754 transitions. [2021-12-06 18:25:21,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:25:21,533 INFO L681 BuchiCegarLoop]: Abstraction has 1858 states and 2754 transitions. [2021-12-06 18:25:21,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1858 states and 2754 transitions. [2021-12-06 18:25:21,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1858 to 1858. [2021-12-06 18:25:21,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1858 states, 1858 states have (on average 1.4822389666307858) internal successors, (2754), 1857 states have internal predecessors, (2754), 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) [2021-12-06 18:25:21,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 2754 transitions. [2021-12-06 18:25:21,565 INFO L704 BuchiCegarLoop]: Abstraction has 1858 states and 2754 transitions. [2021-12-06 18:25:21,565 INFO L587 BuchiCegarLoop]: Abstraction has 1858 states and 2754 transitions. [2021-12-06 18:25:21,565 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-12-06 18:25:21,565 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1858 states and 2754 transitions. [2021-12-06 18:25:21,578 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 1856 [2021-12-06 18:25:21,578 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 18:25:21,578 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 18:25:21,579 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-06 18:25:21,579 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] [2021-12-06 18:25:21,579 INFO L791 eck$LassoCheckResult]: Stem: 5706#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(16, 2);call #Ultimate.allocInit(12, 3); 5684#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_~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_~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;havoc main_~cond~0#1; 5685#L155-1 [2021-12-06 18:25:21,579 INFO L793 eck$LassoCheckResult]: Loop: 5685#L155-1 assume !false;main_~cond~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1; 5885#L43 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; 5882#L68 assume !(0 != main_~p1~0#1); 5878#L68-2 assume !(0 != main_~p2~0#1); 5875#L72-1 assume !(0 != main_~p3~0#1); 5873#L76-1 assume !(0 != main_~p4~0#1); 5863#L80-1 assume !(0 != main_~p5~0#1); 5865#L84-1 assume !(0 != main_~p6~0#1); 5850#L88-1 assume !(0 != main_~p7~0#1); 5852#L92-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 5838#L96-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 5839#L100-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 5825#L104-1 assume !(0 != main_~p1~0#1); 5826#L110-1 assume !(0 != main_~p2~0#1); 5804#L115-1 assume !(0 != main_~p3~0#1); 5803#L120-1 assume !(0 != main_~p4~0#1); 5903#L125-1 assume !(0 != main_~p5~0#1); 5901#L130-1 assume !(0 != main_~p6~0#1); 5899#L135-1 assume !(0 != main_~p7~0#1); 5896#L140-1 assume !(0 != main_~p8~0#1); 5894#L145-1 assume !(0 != main_~p9~0#1); 5890#L150-1 assume !(0 != main_~p10~0#1); 5685#L155-1 [2021-12-06 18:25:21,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:25:21,580 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 7 times [2021-12-06 18:25:21,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:25:21,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137183141] [2021-12-06 18:25:21,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:25:21,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:25:21,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:25:21,585 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 18:25:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:25:21,591 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 18:25:21,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:25:21,592 INFO L85 PathProgramCache]: Analyzing trace with hash -510214503, now seen corresponding path program 1 times [2021-12-06 18:25:21,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:25:21,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571601756] [2021-12-06 18:25:21,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:25:21,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:25:21,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:25:21,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:25:21,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:25:21,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571601756] [2021-12-06 18:25:21,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571601756] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:25:21,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:25:21,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:25:21,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701806941] [2021-12-06 18:25:21,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:25:21,615 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-06 18:25:21,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:25:21,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:25:21,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:25:21,615 INFO L87 Difference]: Start difference. First operand 1858 states and 2754 transitions. cyclomatic complexity: 960 Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2021-12-06 18:25:21,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:25:21,636 INFO L93 Difference]: Finished difference Result 3650 states and 5314 transitions. [2021-12-06 18:25:21,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:25:21,637 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 3650 states and 5314 transitions. [2021-12-06 18:25:21,658 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 3648 [2021-12-06 18:25:21,677 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 3650 states to 3650 states and 5314 transitions. [2021-12-06 18:25:21,678 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3650 [2021-12-06 18:25:21,680 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3650 [2021-12-06 18:25:21,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3650 states and 5314 transitions. [2021-12-06 18:25:21,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:25:21,684 INFO L681 BuchiCegarLoop]: Abstraction has 3650 states and 5314 transitions. [2021-12-06 18:25:21,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3650 states and 5314 transitions. [2021-12-06 18:25:21,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3650 to 3650. [2021-12-06 18:25:21,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3650 states, 3650 states have (on average 1.4558904109589041) internal successors, (5314), 3649 states have internal predecessors, (5314), 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) [2021-12-06 18:25:21,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 5314 transitions. [2021-12-06 18:25:21,741 INFO L704 BuchiCegarLoop]: Abstraction has 3650 states and 5314 transitions. [2021-12-06 18:25:21,741 INFO L587 BuchiCegarLoop]: Abstraction has 3650 states and 5314 transitions. [2021-12-06 18:25:21,741 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-12-06 18:25:21,741 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3650 states and 5314 transitions. [2021-12-06 18:25:21,755 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 3648 [2021-12-06 18:25:21,755 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 18:25:21,756 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 18:25:21,756 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-06 18:25:21,756 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] [2021-12-06 18:25:21,756 INFO L791 eck$LassoCheckResult]: Stem: 11221#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(16, 2);call #Ultimate.allocInit(12, 3); 11198#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_~cond~0#1; 11199#L155-1 [2021-12-06 18:25:21,756 INFO L793 eck$LassoCheckResult]: Loop: 11199#L155-1 assume !false;main_~cond~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1; 11355#L43 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; 11352#L68 assume !(0 != main_~p1~0#1); 11348#L68-2 assume !(0 != main_~p2~0#1); 11345#L72-1 assume !(0 != main_~p3~0#1); 11342#L76-1 assume !(0 != main_~p4~0#1); 11291#L80-1 assume !(0 != main_~p5~0#1); 11277#L84-1 assume !(0 != main_~p6~0#1); 11279#L88-1 assume !(0 != main_~p7~0#1); 11480#L92-1 assume !(0 != main_~p8~0#1); 11481#L96-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 11482#L100-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 11439#L104-1 assume !(0 != main_~p1~0#1); 11436#L110-1 assume !(0 != main_~p2~0#1); 11423#L115-1 assume !(0 != main_~p3~0#1); 11416#L120-1 assume !(0 != main_~p4~0#1); 11411#L125-1 assume !(0 != main_~p5~0#1); 11404#L130-1 assume !(0 != main_~p6~0#1); 11398#L135-1 assume !(0 != main_~p7~0#1); 11393#L140-1 assume !(0 != main_~p8~0#1); 11387#L145-1 assume !(0 != main_~p9~0#1); 11360#L150-1 assume !(0 != main_~p10~0#1); 11199#L155-1 [2021-12-06 18:25:21,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:25:21,757 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 8 times [2021-12-06 18:25:21,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:25:21,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751582788] [2021-12-06 18:25:21,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:25:21,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:25:21,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:25:21,761 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 18:25:21,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:25:21,766 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 18:25:21,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:25:21,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1097020517, now seen corresponding path program 1 times [2021-12-06 18:25:21,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:25:21,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820703173] [2021-12-06 18:25:21,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:25:21,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:25:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:25:21,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:25:21,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:25:21,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820703173] [2021-12-06 18:25:21,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820703173] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:25:21,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:25:21,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:25:21,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615350462] [2021-12-06 18:25:21,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:25:21,789 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-06 18:25:21,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:25:21,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:25:21,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:25:21,790 INFO L87 Difference]: Start difference. First operand 3650 states and 5314 transitions. cyclomatic complexity: 1792 Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2021-12-06 18:25:21,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:25:21,818 INFO L93 Difference]: Finished difference Result 7170 states and 10242 transitions. [2021-12-06 18:25:21,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:25:21,819 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7170 states and 10242 transitions. [2021-12-06 18:25:21,864 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 7168 [2021-12-06 18:25:21,900 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7170 states to 7170 states and 10242 transitions. [2021-12-06 18:25:21,901 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7170 [2021-12-06 18:25:21,904 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7170 [2021-12-06 18:25:21,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7170 states and 10242 transitions. [2021-12-06 18:25:21,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:25:21,911 INFO L681 BuchiCegarLoop]: Abstraction has 7170 states and 10242 transitions. [2021-12-06 18:25:21,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7170 states and 10242 transitions. [2021-12-06 18:25:21,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7170 to 7170. [2021-12-06 18:25:22,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7170 states, 7170 states have (on average 1.4284518828451882) internal successors, (10242), 7169 states have internal predecessors, (10242), 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) [2021-12-06 18:25:22,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7170 states to 7170 states and 10242 transitions. [2021-12-06 18:25:22,046 INFO L704 BuchiCegarLoop]: Abstraction has 7170 states and 10242 transitions. [2021-12-06 18:25:22,046 INFO L587 BuchiCegarLoop]: Abstraction has 7170 states and 10242 transitions. [2021-12-06 18:25:22,046 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-12-06 18:25:22,047 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7170 states and 10242 transitions. [2021-12-06 18:25:22,070 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 7168 [2021-12-06 18:25:22,070 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 18:25:22,070 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 18:25:22,071 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-06 18:25:22,071 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] [2021-12-06 18:25:22,071 INFO L791 eck$LassoCheckResult]: Stem: 22047#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(16, 2);call #Ultimate.allocInit(12, 3); 22025#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_~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_~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;havoc main_~cond~0#1; 22026#L155-1 [2021-12-06 18:25:22,071 INFO L793 eck$LassoCheckResult]: Loop: 22026#L155-1 assume !false;main_~cond~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1; 22222#L43 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; 22212#L68 assume !(0 != main_~p1~0#1); 22214#L68-2 assume !(0 != main_~p2~0#1); 22204#L72-1 assume !(0 != main_~p3~0#1); 22205#L76-1 assume !(0 != main_~p4~0#1); 22437#L80-1 assume !(0 != main_~p5~0#1); 22435#L84-1 assume !(0 != main_~p6~0#1); 22431#L88-1 assume !(0 != main_~p7~0#1); 22427#L92-1 assume !(0 != main_~p8~0#1); 22423#L96-1 assume !(0 != main_~p9~0#1); 22421#L100-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 22417#L104-1 assume !(0 != main_~p1~0#1); 22413#L110-1 assume !(0 != main_~p2~0#1); 22409#L115-1 assume !(0 != main_~p3~0#1); 22406#L120-1 assume !(0 != main_~p4~0#1); 22401#L125-1 assume !(0 != main_~p5~0#1); 22402#L130-1 assume !(0 != main_~p6~0#1); 22391#L135-1 assume !(0 != main_~p7~0#1); 22392#L140-1 assume !(0 != main_~p8~0#1); 22228#L145-1 assume !(0 != main_~p9~0#1); 22229#L150-1 assume !(0 != main_~p10~0#1); 22026#L155-1 [2021-12-06 18:25:22,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:25:22,072 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 9 times [2021-12-06 18:25:22,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:25:22,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827458459] [2021-12-06 18:25:22,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:25:22,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:25:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:25:22,076 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 18:25:22,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:25:22,081 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 18:25:22,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:25:22,081 INFO L85 PathProgramCache]: Analyzing trace with hash -838855079, now seen corresponding path program 1 times [2021-12-06 18:25:22,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:25:22,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164501531] [2021-12-06 18:25:22,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:25:22,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:25:22,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:25:22,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:25:22,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:25:22,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164501531] [2021-12-06 18:25:22,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164501531] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:25:22,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:25:22,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:25:22,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85314149] [2021-12-06 18:25:22,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:25:22,099 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-06 18:25:22,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:25:22,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:25:22,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:25:22,100 INFO L87 Difference]: Start difference. First operand 7170 states and 10242 transitions. cyclomatic complexity: 3328 Second operand has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 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) [2021-12-06 18:25:22,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:25:22,162 INFO L93 Difference]: Finished difference Result 14082 states and 19714 transitions. [2021-12-06 18:25:22,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:25:22,163 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14082 states and 19714 transitions. [2021-12-06 18:25:22,232 INFO L131 ngComponentsAnalysis]: Automaton has 512 accepting balls. 14080 [2021-12-06 18:25:22,302 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14082 states to 14082 states and 19714 transitions. [2021-12-06 18:25:22,302 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14082 [2021-12-06 18:25:22,309 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14082 [2021-12-06 18:25:22,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14082 states and 19714 transitions. [2021-12-06 18:25:22,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 18:25:22,334 INFO L681 BuchiCegarLoop]: Abstraction has 14082 states and 19714 transitions. [2021-12-06 18:25:22,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14082 states and 19714 transitions. [2021-12-06 18:25:22,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14082 to 14082. [2021-12-06 18:25:22,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14082 states, 14082 states have (on average 1.3999431898878) internal successors, (19714), 14081 states have internal predecessors, (19714), 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) [2021-12-06 18:25:22,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14082 states to 14082 states and 19714 transitions. [2021-12-06 18:25:22,516 INFO L704 BuchiCegarLoop]: Abstraction has 14082 states and 19714 transitions. [2021-12-06 18:25:22,516 INFO L587 BuchiCegarLoop]: Abstraction has 14082 states and 19714 transitions. [2021-12-06 18:25:22,516 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-12-06 18:25:22,516 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14082 states and 19714 transitions. [2021-12-06 18:25:22,576 INFO L131 ngComponentsAnalysis]: Automaton has 512 accepting balls. 14080 [2021-12-06 18:25:22,576 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 18:25:22,576 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 18:25:22,577 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-06 18:25:22,577 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] [2021-12-06 18:25:22,577 INFO L791 eck$LassoCheckResult]: Stem: 43305#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(16, 2);call #Ultimate.allocInit(12, 3); 43283#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;havoc main_~cond~0#1; 43284#L155-1 [2021-12-06 18:25:22,578 INFO L793 eck$LassoCheckResult]: Loop: 43284#L155-1 assume !false;main_~cond~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1; 43670#L43 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; 43660#L68 assume !(0 != main_~p1~0#1); 43662#L68-2 assume !(0 != main_~p2~0#1); 43651#L72-1 assume !(0 != main_~p3~0#1); 43652#L76-1 assume !(0 != main_~p4~0#1); 43620#L80-1 assume !(0 != main_~p5~0#1); 43622#L84-1 assume !(0 != main_~p6~0#1); 43715#L88-1 assume !(0 != main_~p7~0#1); 43717#L92-1 assume !(0 != main_~p8~0#1); 43779#L96-1 assume !(0 != main_~p9~0#1); 43776#L100-1 assume !(0 != main_~p10~0#1); 43772#L104-1 assume !(0 != main_~p1~0#1); 43768#L110-1 assume !(0 != main_~p2~0#1); 43765#L115-1 assume !(0 != main_~p3~0#1); 43761#L120-1 assume !(0 != main_~p4~0#1); 43444#L125-1 assume !(0 != main_~p5~0#1); 43445#L130-1 assume !(0 != main_~p6~0#1); 43434#L135-1 assume !(0 != main_~p7~0#1); 43436#L140-1 assume !(0 != main_~p8~0#1); 43679#L145-1 assume !(0 != main_~p9~0#1); 43681#L150-1 assume !(0 != main_~p10~0#1); 43284#L155-1 [2021-12-06 18:25:22,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:25:22,578 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 10 times [2021-12-06 18:25:22,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:25:22,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311721551] [2021-12-06 18:25:22,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:25:22,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:25:22,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:25:22,583 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 18:25:22,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:25:22,588 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 18:25:22,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:25:22,588 INFO L85 PathProgramCache]: Analyzing trace with hash -137790501, now seen corresponding path program 1 times [2021-12-06 18:25:22,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:25:22,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009779767] [2021-12-06 18:25:22,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:25:22,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:25:22,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:25:22,593 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 18:25:22,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:25:22,602 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 18:25:22,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:25:22,603 INFO L85 PathProgramCache]: Analyzing trace with hash -970235363, now seen corresponding path program 1 times [2021-12-06 18:25:22,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:25:22,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936016513] [2021-12-06 18:25:22,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:25:22,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:25:22,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:25:22,611 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 18:25:22,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:25:22,621 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 18:25:22,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.12 06:25:22 BoogieIcfgContainer [2021-12-06 18:25:22,859 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-06 18:25:22,859 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 18:25:22,859 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 18:25:22,859 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 18:25:22,860 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:25:20" (3/4) ... [2021-12-06 18:25:22,861 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-06 18:25:22,891 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5d5997f-1ac5-4b13-9e30-26e17c2a2c42/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 18:25:22,892 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 18:25:22,892 INFO L158 Benchmark]: Toolchain (without parser) took 2655.21ms. Allocated memory was 109.1MB in the beginning and 237.0MB in the end (delta: 127.9MB). Free memory was 68.4MB in the beginning and 113.7MB in the end (delta: -45.3MB). Peak memory consumption was 83.4MB. Max. memory is 16.1GB. [2021-12-06 18:25:22,893 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 109.1MB. Free memory was 84.8MB in the beginning and 84.7MB in the end (delta: 117.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:25:22,893 INFO L158 Benchmark]: CACSL2BoogieTranslator took 181.48ms. Allocated memory is still 109.1MB. Free memory was 68.2MB in the beginning and 82.7MB in the end (delta: -14.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 18:25:22,894 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.16ms. Allocated memory is still 109.1MB. Free memory was 82.7MB in the beginning and 81.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 18:25:22,894 INFO L158 Benchmark]: Boogie Preprocessor took 16.37ms. Allocated memory is still 109.1MB. Free memory was 81.0MB in the beginning and 79.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 18:25:22,894 INFO L158 Benchmark]: RCFGBuilder took 246.30ms. Allocated memory is still 109.1MB. Free memory was 79.7MB in the beginning and 68.4MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 18:25:22,895 INFO L158 Benchmark]: BuchiAutomizer took 2149.00ms. Allocated memory was 109.1MB in the beginning and 237.0MB in the end (delta: 127.9MB). Free memory was 68.4MB in the beginning and 115.8MB in the end (delta: -47.4MB). Peak memory consumption was 121.4MB. Max. memory is 16.1GB. [2021-12-06 18:25:22,895 INFO L158 Benchmark]: Witness Printer took 32.62ms. Allocated memory is still 237.0MB. Free memory was 115.8MB in the beginning and 113.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 18:25:22,897 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 109.1MB. Free memory was 84.8MB in the beginning and 84.7MB in the end (delta: 117.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 181.48ms. Allocated memory is still 109.1MB. Free memory was 68.2MB in the beginning and 82.7MB in the end (delta: -14.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.16ms. Allocated memory is still 109.1MB. Free memory was 82.7MB in the beginning and 81.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.37ms. Allocated memory is still 109.1MB. Free memory was 81.0MB in the beginning and 79.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 246.30ms. Allocated memory is still 109.1MB. Free memory was 79.7MB in the beginning and 68.4MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 2149.00ms. Allocated memory was 109.1MB in the beginning and 237.0MB in the end (delta: 127.9MB). Free memory was 68.4MB in the beginning and 115.8MB in the end (delta: -47.4MB). Peak memory consumption was 121.4MB. Max. memory is 16.1GB. * Witness Printer took 32.62ms. Allocated memory is still 237.0MB. Free memory was 115.8MB in the beginning and 113.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. 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 9 terminating modules (9 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.9 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 14082 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.0s and 10 iterations. TraceHistogramMax:1. Analysis of lassos took 0.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 9. Minimization of nondet autom 0. Automata minimization 0.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.3s Buchi closure took 0.0s. Biggest automaton had 14082 states and ocurred in iteration 9. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 374 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 374 mSDsluCounter, 1167 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 445 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 45 IncrementalHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 722 mSDtfsCounter, 45 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI9 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: 41]: 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 {lk5=0, p1=0, NULL=0, p9=0, lk9=0, NULL=1, cond=4, p5=0, p10=0, lk2=0, p4=0, p8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@36773e92=0, lk6=0, lk1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4db218b5=0, p3=0, lk3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@18b23c00=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3fac575b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@84fe4c6=0, p7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2863f6f2=0, \result=0, lk10=0, lk7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4108c57c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4e84f061=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6b5def59=0, p6=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1c434f20=0, p2=0, lk4=0, lk8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4aa7e9cf=4} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 41]: 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; [L39] int cond; Loop: [L41] COND TRUE 1 [L42] cond = __VERIFIER_nondet_int() [L43] COND FALSE !(cond == 0) [L46] lk1 = 0 [L48] lk2 = 0 [L50] lk3 = 0 [L52] lk4 = 0 [L54] lk5 = 0 [L56] lk6 = 0 [L58] lk7 = 0 [L60] lk8 = 0 [L62] lk9 = 0 [L64] lk10 = 0 [L68] COND FALSE !(p1 != 0) [L72] COND FALSE !(p2 != 0) [L76] COND FALSE !(p3 != 0) [L80] COND FALSE !(p4 != 0) [L84] COND FALSE !(p5 != 0) [L88] COND FALSE !(p6 != 0) [L92] COND FALSE !(p7 != 0) [L96] COND FALSE !(p8 != 0) [L100] COND FALSE !(p9 != 0) [L104] COND FALSE !(p10 != 0) [L110] COND FALSE !(p1 != 0) [L115] COND FALSE !(p2 != 0) [L120] COND FALSE !(p3 != 0) [L125] COND FALSE !(p4 != 0) [L130] COND FALSE !(p5 != 0) [L135] COND FALSE !(p6 != 0) [L140] COND FALSE !(p7 != 0) [L145] COND FALSE !(p8 != 0) [L150] COND FALSE !(p9 != 0) [L155] COND FALSE !(p10 != 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-06 18:25:22,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5d5997f-1ac5-4b13-9e30-26e17c2a2c42/bin/uautomizer-DrprNOufMa/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)