./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbfc510-6d36-4243-b395-09ad86650016/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbfc510-6d36-4243-b395-09ad86650016/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbfc510-6d36-4243-b395-09ad86650016/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbfc510-6d36-4243-b395-09ad86650016/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbfc510-6d36-4243-b395-09ad86650016/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbfc510-6d36-4243-b395-09ad86650016/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2c167e2ddaf8948d5e7bd26982f4dbc66059753c7303cdae96f611484751ca27 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:56:37,213 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:56:37,299 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbfc510-6d36-4243-b395-09ad86650016/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:56:37,305 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:56:37,306 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:56:37,342 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:56:37,344 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:56:37,345 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:56:37,346 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:56:37,351 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:56:37,353 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:56:37,353 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:56:37,354 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:56:37,356 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:56:37,356 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:56:37,356 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:56:37,357 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:56:37,357 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:56:37,358 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:56:37,358 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:56:37,359 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:56:37,359 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:56:37,360 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:56:37,360 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:56:37,360 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:56:37,361 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:56:37,362 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:56:37,362 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:56:37,363 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:56:37,363 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:56:37,364 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:56:37,365 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:56:37,378 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:56:37,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:56:37,378 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:56:37,379 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:56:37,379 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:56:37,379 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:56:37,380 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:56:37,380 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_7bbfc510-6d36-4243-b395-09ad86650016/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbfc510-6d36-4243-b395-09ad86650016/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c167e2ddaf8948d5e7bd26982f4dbc66059753c7303cdae96f611484751ca27 [2023-11-19 07:56:37,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:56:37,696 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:56:37,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:56:37,699 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:56:37,700 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:56:37,701 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbfc510-6d36-4243-b395-09ad86650016/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label05.c [2023-11-19 07:56:40,886 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:56:41,443 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:56:41,444 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbfc510-6d36-4243-b395-09ad86650016/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label05.c [2023-11-19 07:56:41,488 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbfc510-6d36-4243-b395-09ad86650016/bin/uautomizer-verify-uCwYo4JHxu/data/e3280a701/7de7f84dc7aa4d268774c5e997639f20/FLAGa6852eed7 [2023-11-19 07:56:41,513 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbfc510-6d36-4243-b395-09ad86650016/bin/uautomizer-verify-uCwYo4JHxu/data/e3280a701/7de7f84dc7aa4d268774c5e997639f20 [2023-11-19 07:56:41,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:56:41,521 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:56:41,527 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:56:41,527 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:56:41,533 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:56:41,536 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:56:41" (1/1) ... [2023-11-19 07:56:41,537 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f5131a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:41, skipping insertion in model container [2023-11-19 07:56:41,537 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:56:41" (1/1) ... [2023-11-19 07:56:41,721 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:56:42,219 WARN L240 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_7bbfc510-6d36-4243-b395-09ad86650016/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label05.c[15482,15495] [2023-11-19 07:56:42,322 WARN L240 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_7bbfc510-6d36-4243-b395-09ad86650016/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label05.c[22418,22431] [2023-11-19 07:56:43,550 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:56:43,567 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:56:43,638 WARN L240 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_7bbfc510-6d36-4243-b395-09ad86650016/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label05.c[15482,15495] [2023-11-19 07:56:43,653 WARN L240 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_7bbfc510-6d36-4243-b395-09ad86650016/sv-benchmarks/c/combinations/pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label05.c[22418,22431] [2023-11-19 07:56:44,229 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:56:44,266 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:56:44,267 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:44 WrapperNode [2023-11-19 07:56:44,267 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:56:44,269 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:56:44,269 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:56:44,269 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:56:44,278 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:44" (1/1) ... [2023-11-19 07:56:44,343 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:44" (1/1) ... [2023-11-19 07:56:44,751 INFO L138 Inliner]: procedures = 37, calls = 23, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 5152 [2023-11-19 07:56:44,751 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:56:44,752 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:56:44,752 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:56:44,753 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:56:44,770 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:44" (1/1) ... [2023-11-19 07:56:44,770 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:44" (1/1) ... [2023-11-19 07:56:44,890 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:44" (1/1) ... [2023-11-19 07:56:44,891 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:44" (1/1) ... [2023-11-19 07:56:45,042 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:44" (1/1) ... [2023-11-19 07:56:45,081 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:44" (1/1) ... [2023-11-19 07:56:45,100 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:44" (1/1) ... [2023-11-19 07:56:45,219 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:44" (1/1) ... [2023-11-19 07:56:45,272 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:56:45,274 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:56:45,275 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:56:45,275 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:56:45,276 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:44" (1/1) ... [2023-11-19 07:56:45,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:56:45,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbfc510-6d36-4243-b395-09ad86650016/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:45,314 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbfc510-6d36-4243-b395-09ad86650016/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:45,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bbfc510-6d36-4243-b395-09ad86650016/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:56:45,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:56:45,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:56:45,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:56:45,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:56:45,505 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:56:45,507 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:56:51,406 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:56:51,424 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:56:51,424 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:56:51,436 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:51 BoogieIcfgContainer [2023-11-19 07:56:51,436 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:56:51,439 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:56:51,439 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:56:51,442 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:56:51,443 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:56:41" (1/3) ... [2023-11-19 07:56:51,443 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4641fde6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:56:51, skipping insertion in model container [2023-11-19 07:56:51,444 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:44" (2/3) ... [2023-11-19 07:56:51,444 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4641fde6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:56:51, skipping insertion in model container [2023-11-19 07:56:51,444 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:51" (3/3) ... [2023-11-19 07:56:51,446 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals+Problem12_label05.c [2023-11-19 07:56:51,465 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:56:51,466 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 07:56:51,540 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:56:51,549 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5fb5f547, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:56:51,549 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 07:56:51,560 INFO L276 IsEmpty]: Start isEmpty. Operand has 914 states, 911 states have (on average 1.9045005488474205) internal successors, (1735), 913 states have internal predecessors, (1735), 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) [2023-11-19 07:56:51,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-19 07:56:51,570 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:56:51,571 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:51,572 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:56:51,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:51,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1509915646, now seen corresponding path program 1 times [2023-11-19 07:56:51,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:51,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295010265] [2023-11-19 07:56:51,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:51,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:51,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:51,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:51,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:51,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295010265] [2023-11-19 07:56:51,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295010265] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:51,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:51,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:56:51,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038354411] [2023-11-19 07:56:51,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:51,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:56:51,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:51,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:56:51,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:56:51,877 INFO L87 Difference]: Start difference. First operand has 914 states, 911 states have (on average 1.9045005488474205) internal successors, (1735), 913 states have internal predecessors, (1735), 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 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:52,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:56:52,084 INFO L93 Difference]: Finished difference Result 1782 states and 3382 transitions. [2023-11-19 07:56:52,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:56:52,086 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-11-19 07:56:52,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:56:52,113 INFO L225 Difference]: With dead ends: 1782 [2023-11-19 07:56:52,114 INFO L226 Difference]: Without dead ends: 848 [2023-11-19 07:56:52,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:56:52,127 INFO L413 NwaCegarLoop]: 1669 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:56:52,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1669 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:56:52,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2023-11-19 07:56:52,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 848. [2023-11-19 07:56:52,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 846 states have (on average 1.8936170212765957) internal successors, (1602), 847 states have internal predecessors, (1602), 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) [2023-11-19 07:56:52,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1602 transitions. [2023-11-19 07:56:52,242 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1602 transitions. Word has length 26 [2023-11-19 07:56:52,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:56:52,242 INFO L495 AbstractCegarLoop]: Abstraction has 848 states and 1602 transitions. [2023-11-19 07:56:52,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:52,243 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1602 transitions. [2023-11-19 07:56:52,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-19 07:56:52,245 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:56:52,246 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:52,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:56:52,246 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:56:52,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:52,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1967403200, now seen corresponding path program 1 times [2023-11-19 07:56:52,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:52,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467968146] [2023-11-19 07:56:52,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:52,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:52,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:52,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:52,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:52,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467968146] [2023-11-19 07:56:52,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467968146] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:52,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:52,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:56:52,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602225524] [2023-11-19 07:56:52,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:52,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:56:52,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:52,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:56:52,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:56:52,616 INFO L87 Difference]: Start difference. First operand 848 states and 1602 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:52,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:56:52,794 INFO L93 Difference]: Finished difference Result 900 states and 1683 transitions. [2023-11-19 07:56:52,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:56:52,795 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-11-19 07:56:52,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:56:52,800 INFO L225 Difference]: With dead ends: 900 [2023-11-19 07:56:52,801 INFO L226 Difference]: Without dead ends: 848 [2023-11-19 07:56:52,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:56:52,803 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 2 mSDsluCounter, 4755 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6355 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:56:52,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6355 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:56:52,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2023-11-19 07:56:52,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 848. [2023-11-19 07:56:52,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 848 states, 846 states have (on average 1.846335697399527) internal successors, (1562), 847 states have internal predecessors, (1562), 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) [2023-11-19 07:56:52,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1562 transitions. [2023-11-19 07:56:52,825 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1562 transitions. Word has length 26 [2023-11-19 07:56:52,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:56:52,825 INFO L495 AbstractCegarLoop]: Abstraction has 848 states and 1562 transitions. [2023-11-19 07:56:52,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:52,826 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1562 transitions. [2023-11-19 07:56:52,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-19 07:56:52,828 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:56:52,829 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:52,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:56:52,829 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:56:52,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:52,830 INFO L85 PathProgramCache]: Analyzing trace with hash 348668805, now seen corresponding path program 1 times [2023-11-19 07:56:52,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:52,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149467704] [2023-11-19 07:56:52,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:52,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:53,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:53,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:53,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149467704] [2023-11-19 07:56:53,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149467704] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:53,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:53,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:56:53,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211189182] [2023-11-19 07:56:53,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:53,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:56:53,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:53,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:56:53,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:56:53,158 INFO L87 Difference]: Start difference. First operand 848 states and 1562 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2023-11-19 07:57:01,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:01,615 INFO L93 Difference]: Finished difference Result 3103 states and 5871 transitions. [2023-11-19 07:57:01,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:57:01,616 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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) Word has length 60 [2023-11-19 07:57:01,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:01,632 INFO L225 Difference]: With dead ends: 3103 [2023-11-19 07:57:01,632 INFO L226 Difference]: Without dead ends: 2350 [2023-11-19 07:57:01,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:57:01,636 INFO L413 NwaCegarLoop]: 798 mSDtfsCounter, 2439 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2439 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 6507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:01,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2439 Valid, 816 Invalid, 6507 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1153 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2023-11-19 07:57:01,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2350 states. [2023-11-19 07:57:01,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2350 to 2350. [2023-11-19 07:57:01,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2350 states, 2348 states have (on average 1.565587734241908) internal successors, (3676), 2349 states have internal predecessors, (3676), 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) [2023-11-19 07:57:01,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2350 states to 2350 states and 3676 transitions. [2023-11-19 07:57:01,718 INFO L78 Accepts]: Start accepts. Automaton has 2350 states and 3676 transitions. Word has length 60 [2023-11-19 07:57:01,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:01,719 INFO L495 AbstractCegarLoop]: Abstraction has 2350 states and 3676 transitions. [2023-11-19 07:57:01,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2023-11-19 07:57:01,719 INFO L276 IsEmpty]: Start isEmpty. Operand 2350 states and 3676 transitions. [2023-11-19 07:57:01,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-19 07:57:01,721 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:01,722 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:01,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:57:01,722 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:57:01,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:01,723 INFO L85 PathProgramCache]: Analyzing trace with hash 223622668, now seen corresponding path program 1 times [2023-11-19 07:57:01,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:01,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015996141] [2023-11-19 07:57:01,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:01,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:01,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:01,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:01,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:01,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015996141] [2023-11-19 07:57:01,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015996141] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:01,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:01,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:57:01,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007125266] [2023-11-19 07:57:01,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:01,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:57:01,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:01,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:57:01,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:57:01,994 INFO L87 Difference]: Start difference. First operand 2350 states and 3676 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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) [2023-11-19 07:57:02,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:02,411 INFO L93 Difference]: Finished difference Result 2926 states and 4600 transitions. [2023-11-19 07:57:02,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 07:57:02,411 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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) Word has length 65 [2023-11-19 07:57:02,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:02,429 INFO L225 Difference]: With dead ends: 2926 [2023-11-19 07:57:02,430 INFO L226 Difference]: Without dead ends: 2878 [2023-11-19 07:57:02,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:57:02,439 INFO L413 NwaCegarLoop]: 1558 mSDtfsCounter, 9699 mSDsluCounter, 2134 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9699 SdHoareTripleChecker+Valid, 3692 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:02,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9699 Valid, 3692 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:57:02,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2878 states. [2023-11-19 07:57:02,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2878 to 2396. [2023-11-19 07:57:02,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2396 states, 2394 states have (on average 1.5664160401002507) internal successors, (3750), 2395 states have internal predecessors, (3750), 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) [2023-11-19 07:57:02,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2396 states to 2396 states and 3750 transitions. [2023-11-19 07:57:02,528 INFO L78 Accepts]: Start accepts. Automaton has 2396 states and 3750 transitions. Word has length 65 [2023-11-19 07:57:02,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:02,531 INFO L495 AbstractCegarLoop]: Abstraction has 2396 states and 3750 transitions. [2023-11-19 07:57:02,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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) [2023-11-19 07:57:02,531 INFO L276 IsEmpty]: Start isEmpty. Operand 2396 states and 3750 transitions. [2023-11-19 07:57:02,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-19 07:57:02,537 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:02,537 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:02,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:57:02,537 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:57:02,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:02,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1262675076, now seen corresponding path program 1 times [2023-11-19 07:57:02,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:02,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385020900] [2023-11-19 07:57:02,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:02,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:02,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:02,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:02,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385020900] [2023-11-19 07:57:02,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385020900] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:02,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:02,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:57:02,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52041325] [2023-11-19 07:57:02,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:02,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:02,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:02,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:02,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:02,702 INFO L87 Difference]: Start difference. First operand 2396 states and 3750 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2023-11-19 07:57:02,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:02,751 INFO L93 Difference]: Finished difference Result 2573 states and 4033 transitions. [2023-11-19 07:57:02,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:02,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) Word has length 67 [2023-11-19 07:57:02,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:02,768 INFO L225 Difference]: With dead ends: 2573 [2023-11-19 07:57:02,768 INFO L226 Difference]: Without dead ends: 2479 [2023-11-19 07:57:02,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:02,771 INFO L413 NwaCegarLoop]: 1560 mSDtfsCounter, 1490 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:02,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1632 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:57:02,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2479 states. [2023-11-19 07:57:02,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2479 to 2477. [2023-11-19 07:57:02,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2477 states, 2475 states have (on average 1.566868686868687) internal successors, (3878), 2476 states have internal predecessors, (3878), 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) [2023-11-19 07:57:02,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2477 states to 2477 states and 3878 transitions. [2023-11-19 07:57:02,845 INFO L78 Accepts]: Start accepts. Automaton has 2477 states and 3878 transitions. Word has length 67 [2023-11-19 07:57:02,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:02,847 INFO L495 AbstractCegarLoop]: Abstraction has 2477 states and 3878 transitions. [2023-11-19 07:57:02,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2023-11-19 07:57:02,847 INFO L276 IsEmpty]: Start isEmpty. Operand 2477 states and 3878 transitions. [2023-11-19 07:57:02,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-19 07:57:02,849 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:02,850 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:02,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:57:02,850 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:57:02,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:02,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1196181564, now seen corresponding path program 1 times [2023-11-19 07:57:02,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:02,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957200022] [2023-11-19 07:57:02,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:02,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:02,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:03,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:03,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:03,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957200022] [2023-11-19 07:57:03,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957200022] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:03,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:03,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:57:03,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843631057] [2023-11-19 07:57:03,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:03,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:57:03,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:03,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:57:03,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:57:03,350 INFO L87 Difference]: Start difference. First operand 2477 states and 3878 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 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) [2023-11-19 07:57:03,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:03,677 INFO L93 Difference]: Finished difference Result 2654 states and 4158 transitions. [2023-11-19 07:57:03,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:57:03,678 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 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) Word has length 67 [2023-11-19 07:57:03,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:03,697 INFO L225 Difference]: With dead ends: 2654 [2023-11-19 07:57:03,697 INFO L226 Difference]: Without dead ends: 2479 [2023-11-19 07:57:03,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:57:03,700 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 8992 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8992 SdHoareTripleChecker+Valid, 1922 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:03,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8992 Valid, 1922 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:57:03,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2479 states. [2023-11-19 07:57:03,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2479 to 2477. [2023-11-19 07:57:03,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2477 states, 2475 states have (on average 1.5660606060606062) internal successors, (3876), 2476 states have internal predecessors, (3876), 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) [2023-11-19 07:57:03,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2477 states to 2477 states and 3876 transitions. [2023-11-19 07:57:03,784 INFO L78 Accepts]: Start accepts. Automaton has 2477 states and 3876 transitions. Word has length 67 [2023-11-19 07:57:03,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:03,784 INFO L495 AbstractCegarLoop]: Abstraction has 2477 states and 3876 transitions. [2023-11-19 07:57:03,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 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) [2023-11-19 07:57:03,785 INFO L276 IsEmpty]: Start isEmpty. Operand 2477 states and 3876 transitions. [2023-11-19 07:57:03,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-19 07:57:03,786 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:03,787 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:03,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:57:03,787 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:57:03,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:03,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1158354181, now seen corresponding path program 1 times [2023-11-19 07:57:03,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:03,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141430329] [2023-11-19 07:57:03,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:03,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:04,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:04,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:04,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141430329] [2023-11-19 07:57:04,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141430329] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:04,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:04,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:57:04,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130183020] [2023-11-19 07:57:04,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:04,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:57:04,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:04,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:57:04,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:57:04,058 INFO L87 Difference]: Start difference. First operand 2477 states and 3876 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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) [2023-11-19 07:57:04,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:04,282 INFO L93 Difference]: Finished difference Result 2620 states and 4105 transitions. [2023-11-19 07:57:04,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:57:04,283 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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) Word has length 68 [2023-11-19 07:57:04,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:04,298 INFO L225 Difference]: With dead ends: 2620 [2023-11-19 07:57:04,298 INFO L226 Difference]: Without dead ends: 2618 [2023-11-19 07:57:04,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:57:04,305 INFO L413 NwaCegarLoop]: 1620 mSDtfsCounter, 65 mSDsluCounter, 4790 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 6410 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:04,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 6410 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:57:04,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2618 states. [2023-11-19 07:57:04,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2618 to 2483. [2023-11-19 07:57:04,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2483 states, 2481 states have (on average 1.5642885933091495) internal successors, (3881), 2482 states have internal predecessors, (3881), 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) [2023-11-19 07:57:04,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2483 states to 2483 states and 3881 transitions. [2023-11-19 07:57:04,376 INFO L78 Accepts]: Start accepts. Automaton has 2483 states and 3881 transitions. Word has length 68 [2023-11-19 07:57:04,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:04,377 INFO L495 AbstractCegarLoop]: Abstraction has 2483 states and 3881 transitions. [2023-11-19 07:57:04,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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) [2023-11-19 07:57:04,377 INFO L276 IsEmpty]: Start isEmpty. Operand 2483 states and 3881 transitions. [2023-11-19 07:57:04,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-19 07:57:04,378 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:04,378 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:04,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:57:04,379 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:57:04,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:04,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1759773380, now seen corresponding path program 1 times [2023-11-19 07:57:04,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:04,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643148861] [2023-11-19 07:57:04,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:04,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:04,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:04,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:04,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:04,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643148861] [2023-11-19 07:57:04,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643148861] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:04,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:04,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:57:04,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037000238] [2023-11-19 07:57:04,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:04,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:04,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:04,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:04,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:04,450 INFO L87 Difference]: Start difference. First operand 2483 states and 3881 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2023-11-19 07:57:04,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:04,495 INFO L93 Difference]: Finished difference Result 2677 states and 4182 transitions. [2023-11-19 07:57:04,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:04,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) Word has length 69 [2023-11-19 07:57:04,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:04,511 INFO L225 Difference]: With dead ends: 2677 [2023-11-19 07:57:04,511 INFO L226 Difference]: Without dead ends: 2577 [2023-11-19 07:57:04,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:04,514 INFO L413 NwaCegarLoop]: 1624 mSDtfsCounter, 1506 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:04,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1506 Valid, 1702 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:57:04,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2577 states. [2023-11-19 07:57:04,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2577 to 2575. [2023-11-19 07:57:04,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2575 states, 2573 states have (on average 1.5631558492032647) internal successors, (4022), 2574 states have internal predecessors, (4022), 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) [2023-11-19 07:57:04,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2575 states to 2575 states and 4022 transitions. [2023-11-19 07:57:04,585 INFO L78 Accepts]: Start accepts. Automaton has 2575 states and 4022 transitions. Word has length 69 [2023-11-19 07:57:04,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:04,585 INFO L495 AbstractCegarLoop]: Abstraction has 2575 states and 4022 transitions. [2023-11-19 07:57:04,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2023-11-19 07:57:04,586 INFO L276 IsEmpty]: Start isEmpty. Operand 2575 states and 4022 transitions. [2023-11-19 07:57:04,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-19 07:57:04,587 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:04,587 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:04,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:57:04,588 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:57:04,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:04,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1922687940, now seen corresponding path program 1 times [2023-11-19 07:57:04,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:04,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960508104] [2023-11-19 07:57:04,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:04,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:04,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:04,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:04,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960508104] [2023-11-19 07:57:04,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960508104] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:04,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:04,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:57:04,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688263993] [2023-11-19 07:57:04,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:04,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:04,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:04,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:04,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:04,656 INFO L87 Difference]: Start difference. First operand 2575 states and 4022 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2023-11-19 07:57:04,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:04,707 INFO L93 Difference]: Finished difference Result 3093 states and 4822 transitions. [2023-11-19 07:57:04,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:04,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) Word has length 69 [2023-11-19 07:57:04,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:04,725 INFO L225 Difference]: With dead ends: 3093 [2023-11-19 07:57:04,725 INFO L226 Difference]: Without dead ends: 2822 [2023-11-19 07:57:04,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:04,727 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 1504 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:04,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1708 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:57:04,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2822 states. [2023-11-19 07:57:04,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2822 to 2820. [2023-11-19 07:57:04,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2820 states, 2818 states have (on average 1.5592618878637332) internal successors, (4394), 2819 states have internal predecessors, (4394), 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) [2023-11-19 07:57:04,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2820 states to 2820 states and 4394 transitions. [2023-11-19 07:57:04,895 INFO L78 Accepts]: Start accepts. Automaton has 2820 states and 4394 transitions. Word has length 69 [2023-11-19 07:57:04,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:04,896 INFO L495 AbstractCegarLoop]: Abstraction has 2820 states and 4394 transitions. [2023-11-19 07:57:04,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2023-11-19 07:57:04,896 INFO L276 IsEmpty]: Start isEmpty. Operand 2820 states and 4394 transitions. [2023-11-19 07:57:04,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-19 07:57:04,902 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:04,902 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:04,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:57:04,903 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:57:04,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:04,904 INFO L85 PathProgramCache]: Analyzing trace with hash -870160956, now seen corresponding path program 1 times [2023-11-19 07:57:04,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:04,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066574211] [2023-11-19 07:57:04,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:04,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:04,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:04,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:04,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:04,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066574211] [2023-11-19 07:57:04,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066574211] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:04,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:04,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:57:04,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275617972] [2023-11-19 07:57:04,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:04,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:04,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:04,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:04,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:04,996 INFO L87 Difference]: Start difference. First operand 2820 states and 4394 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2023-11-19 07:57:05,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:05,058 INFO L93 Difference]: Finished difference Result 3804 states and 5896 transitions. [2023-11-19 07:57:05,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:05,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) Word has length 69 [2023-11-19 07:57:05,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:05,078 INFO L225 Difference]: With dead ends: 3804 [2023-11-19 07:57:05,078 INFO L226 Difference]: Without dead ends: 3288 [2023-11-19 07:57:05,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:05,081 INFO L413 NwaCegarLoop]: 1614 mSDtfsCounter, 1500 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1500 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:05,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1500 Valid, 1704 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:57:05,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3288 states. [2023-11-19 07:57:05,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3288 to 3286. [2023-11-19 07:57:05,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3286 states, 3284 states have (on average 1.5499390986601704) internal successors, (5090), 3285 states have internal predecessors, (5090), 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) [2023-11-19 07:57:05,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3286 states to 3286 states and 5090 transitions. [2023-11-19 07:57:05,181 INFO L78 Accepts]: Start accepts. Automaton has 3286 states and 5090 transitions. Word has length 69 [2023-11-19 07:57:05,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:05,182 INFO L495 AbstractCegarLoop]: Abstraction has 3286 states and 5090 transitions. [2023-11-19 07:57:05,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2023-11-19 07:57:05,182 INFO L276 IsEmpty]: Start isEmpty. Operand 3286 states and 5090 transitions. [2023-11-19 07:57:05,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-19 07:57:05,183 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:05,184 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:05,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:57:05,184 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:57:05,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:05,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1209337540, now seen corresponding path program 1 times [2023-11-19 07:57:05,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:05,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021155102] [2023-11-19 07:57:05,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:05,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:05,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:05,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:05,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:05,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021155102] [2023-11-19 07:57:05,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021155102] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:05,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:05,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:57:05,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399409818] [2023-11-19 07:57:05,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:05,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:05,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:05,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:05,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:05,271 INFO L87 Difference]: Start difference. First operand 3286 states and 5090 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2023-11-19 07:57:05,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:05,360 INFO L93 Difference]: Finished difference Result 5154 states and 7900 transitions. [2023-11-19 07:57:05,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:05,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) Word has length 69 [2023-11-19 07:57:05,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:05,396 INFO L225 Difference]: With dead ends: 5154 [2023-11-19 07:57:05,396 INFO L226 Difference]: Without dead ends: 4172 [2023-11-19 07:57:05,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:05,400 INFO L413 NwaCegarLoop]: 1612 mSDtfsCounter, 1498 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:05,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 1706 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:57:05,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4172 states. [2023-11-19 07:57:05,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4172 to 4170. [2023-11-19 07:57:05,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4170 states, 4168 states have (on average 1.5321497120921306) internal successors, (6386), 4169 states have internal predecessors, (6386), 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) [2023-11-19 07:57:05,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4170 states to 4170 states and 6386 transitions. [2023-11-19 07:57:05,544 INFO L78 Accepts]: Start accepts. Automaton has 4170 states and 6386 transitions. Word has length 69 [2023-11-19 07:57:05,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:05,544 INFO L495 AbstractCegarLoop]: Abstraction has 4170 states and 6386 transitions. [2023-11-19 07:57:05,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2023-11-19 07:57:05,545 INFO L276 IsEmpty]: Start isEmpty. Operand 4170 states and 6386 transitions. [2023-11-19 07:57:05,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-19 07:57:05,545 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:05,546 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:05,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:57:05,546 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:57:05,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:05,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1304696892, now seen corresponding path program 1 times [2023-11-19 07:57:05,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:05,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161027773] [2023-11-19 07:57:05,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:05,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:05,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:05,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:05,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:05,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161027773] [2023-11-19 07:57:05,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161027773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:05,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:05,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:57:05,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139660566] [2023-11-19 07:57:05,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:05,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:05,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:05,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:05,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:05,609 INFO L87 Difference]: Start difference. First operand 4170 states and 6386 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2023-11-19 07:57:05,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:05,739 INFO L93 Difference]: Finished difference Result 7710 states and 11620 transitions. [2023-11-19 07:57:05,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:05,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) Word has length 69 [2023-11-19 07:57:05,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:05,754 INFO L225 Difference]: With dead ends: 7710 [2023-11-19 07:57:05,754 INFO L226 Difference]: Without dead ends: 5844 [2023-11-19 07:57:05,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:05,759 INFO L413 NwaCegarLoop]: 1610 mSDtfsCounter, 1496 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:05,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1708 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:57:05,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5844 states. [2023-11-19 07:57:05,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5844 to 5842. [2023-11-19 07:57:05,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5842 states, 5840 states have (on average 1.5044520547945206) internal successors, (8786), 5841 states have internal predecessors, (8786), 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) [2023-11-19 07:57:05,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5842 states to 5842 states and 8786 transitions. [2023-11-19 07:57:05,965 INFO L78 Accepts]: Start accepts. Automaton has 5842 states and 8786 transitions. Word has length 69 [2023-11-19 07:57:05,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:05,966 INFO L495 AbstractCegarLoop]: Abstraction has 5842 states and 8786 transitions. [2023-11-19 07:57:05,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2023-11-19 07:57:05,966 INFO L276 IsEmpty]: Start isEmpty. Operand 5842 states and 8786 transitions. [2023-11-19 07:57:05,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-19 07:57:05,967 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:05,967 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:05,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:57:05,968 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:57:05,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:05,969 INFO L85 PathProgramCache]: Analyzing trace with hash -2108422972, now seen corresponding path program 1 times [2023-11-19 07:57:05,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:05,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756463159] [2023-11-19 07:57:05,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:05,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:05,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:06,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:06,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:06,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756463159] [2023-11-19 07:57:06,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756463159] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:06,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:06,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:57:06,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251037080] [2023-11-19 07:57:06,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:06,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:06,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:06,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:06,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:06,035 INFO L87 Difference]: Start difference. First operand 5842 states and 8786 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2023-11-19 07:57:06,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:06,345 INFO L93 Difference]: Finished difference Result 12534 states and 18484 transitions. [2023-11-19 07:57:06,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:06,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) Word has length 69 [2023-11-19 07:57:06,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:06,365 INFO L225 Difference]: With dead ends: 12534 [2023-11-19 07:57:06,366 INFO L226 Difference]: Without dead ends: 8996 [2023-11-19 07:57:06,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:06,372 INFO L413 NwaCegarLoop]: 1624 mSDtfsCounter, 1502 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:06,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 1710 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:57:06,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8996 states. [2023-11-19 07:57:06,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8996 to 8994. [2023-11-19 07:57:06,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8994 states, 8992 states have (on average 1.468193950177936) internal successors, (13202), 8993 states have internal predecessors, (13202), 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) [2023-11-19 07:57:06,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8994 states to 8994 states and 13202 transitions. [2023-11-19 07:57:06,746 INFO L78 Accepts]: Start accepts. Automaton has 8994 states and 13202 transitions. Word has length 69 [2023-11-19 07:57:06,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:06,746 INFO L495 AbstractCegarLoop]: Abstraction has 8994 states and 13202 transitions. [2023-11-19 07:57:06,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2023-11-19 07:57:06,747 INFO L276 IsEmpty]: Start isEmpty. Operand 8994 states and 13202 transitions. [2023-11-19 07:57:06,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-19 07:57:06,751 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:06,751 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:06,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:57:06,752 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:57:06,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:06,752 INFO L85 PathProgramCache]: Analyzing trace with hash -2062508441, now seen corresponding path program 1 times [2023-11-19 07:57:06,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:06,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679489382] [2023-11-19 07:57:06,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:06,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:06,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:07,022 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:57:07,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:07,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679489382] [2023-11-19 07:57:07,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679489382] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:07,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:07,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:57:07,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069939179] [2023-11-19 07:57:07,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:07,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:57:07,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:07,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:57:07,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:57:07,026 INFO L87 Difference]: Start difference. First operand 8994 states and 13202 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 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) [2023-11-19 07:57:08,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:08,534 INFO L93 Difference]: Finished difference Result 48592 states and 69977 transitions. [2023-11-19 07:57:08,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:57:08,535 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 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) Word has length 90 [2023-11-19 07:57:08,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:08,632 INFO L225 Difference]: With dead ends: 48592 [2023-11-19 07:57:08,632 INFO L226 Difference]: Without dead ends: 43854 [2023-11-19 07:57:08,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:57:08,648 INFO L413 NwaCegarLoop]: 1636 mSDtfsCounter, 8080 mSDsluCounter, 2365 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8080 SdHoareTripleChecker+Valid, 4001 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:08,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8080 Valid, 4001 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:57:08,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43854 states. [2023-11-19 07:57:09,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43854 to 14722. [2023-11-19 07:57:09,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14722 states, 14720 states have (on average 1.4490489130434783) internal successors, (21330), 14721 states have internal predecessors, (21330), 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) [2023-11-19 07:57:09,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14722 states to 14722 states and 21330 transitions. [2023-11-19 07:57:09,809 INFO L78 Accepts]: Start accepts. Automaton has 14722 states and 21330 transitions. Word has length 90 [2023-11-19 07:57:09,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:09,809 INFO L495 AbstractCegarLoop]: Abstraction has 14722 states and 21330 transitions. [2023-11-19 07:57:09,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 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) [2023-11-19 07:57:09,810 INFO L276 IsEmpty]: Start isEmpty. Operand 14722 states and 21330 transitions. [2023-11-19 07:57:09,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-19 07:57:09,816 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:09,816 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:09,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:57:09,817 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:57:09,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:09,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1899593881, now seen corresponding path program 1 times [2023-11-19 07:57:09,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:09,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858218689] [2023-11-19 07:57:09,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:09,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:09,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:10,109 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:57:10,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:10,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858218689] [2023-11-19 07:57:10,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858218689] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:10,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:10,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:57:10,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034583484] [2023-11-19 07:57:10,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:10,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:57:10,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:10,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:57:10,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:57:10,113 INFO L87 Difference]: Start difference. First operand 14722 states and 21330 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 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) [2023-11-19 07:57:12,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:12,152 INFO L93 Difference]: Finished difference Result 55280 states and 79513 transitions. [2023-11-19 07:57:12,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:57:12,153 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 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) Word has length 90 [2023-11-19 07:57:12,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:12,258 INFO L225 Difference]: With dead ends: 55280 [2023-11-19 07:57:12,259 INFO L226 Difference]: Without dead ends: 48590 [2023-11-19 07:57:12,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:57:12,277 INFO L413 NwaCegarLoop]: 1635 mSDtfsCounter, 8080 mSDsluCounter, 2352 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8080 SdHoareTripleChecker+Valid, 3987 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:12,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8080 Valid, 3987 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:57:12,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48590 states. [2023-11-19 07:57:13,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48590 to 23778. [2023-11-19 07:57:13,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23778 states, 23776 states have (on average 1.4368270524899058) internal successors, (34162), 23777 states have internal predecessors, (34162), 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) [2023-11-19 07:57:13,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23778 states to 23778 states and 34162 transitions. [2023-11-19 07:57:13,650 INFO L78 Accepts]: Start accepts. Automaton has 23778 states and 34162 transitions. Word has length 90 [2023-11-19 07:57:13,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:13,650 INFO L495 AbstractCegarLoop]: Abstraction has 23778 states and 34162 transitions. [2023-11-19 07:57:13,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 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) [2023-11-19 07:57:13,651 INFO L276 IsEmpty]: Start isEmpty. Operand 23778 states and 34162 transitions. [2023-11-19 07:57:13,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-19 07:57:13,656 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:13,656 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:13,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 07:57:13,657 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:57:13,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:13,658 INFO L85 PathProgramCache]: Analyzing trace with hash -397475481, now seen corresponding path program 1 times [2023-11-19 07:57:13,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:13,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760969210] [2023-11-19 07:57:13,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:13,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:13,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:13,920 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:57:13,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:13,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760969210] [2023-11-19 07:57:13,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760969210] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:13,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:13,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:57:13,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537750107] [2023-11-19 07:57:13,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:13,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:57:13,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:13,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:57:13,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:57:13,926 INFO L87 Difference]: Start difference. First operand 23778 states and 34162 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 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) [2023-11-19 07:57:15,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:15,658 INFO L93 Difference]: Finished difference Result 61968 states and 89017 transitions. [2023-11-19 07:57:15,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:57:15,658 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 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) Word has length 90 [2023-11-19 07:57:15,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:15,780 INFO L225 Difference]: With dead ends: 61968 [2023-11-19 07:57:15,780 INFO L226 Difference]: Without dead ends: 55278 [2023-11-19 07:57:15,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:57:15,797 INFO L413 NwaCegarLoop]: 1633 mSDtfsCounter, 8122 mSDsluCounter, 2369 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8122 SdHoareTripleChecker+Valid, 4002 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:15,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8122 Valid, 4002 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:57:15,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55278 states. [2023-11-19 07:57:17,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55278 to 30466. [2023-11-19 07:57:17,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30466 states, 30464 states have (on average 1.4333639705882353) internal successors, (43666), 30465 states have internal predecessors, (43666), 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) [2023-11-19 07:57:17,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30466 states to 30466 states and 43666 transitions. [2023-11-19 07:57:17,697 INFO L78 Accepts]: Start accepts. Automaton has 30466 states and 43666 transitions. Word has length 90 [2023-11-19 07:57:17,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:17,698 INFO L495 AbstractCegarLoop]: Abstraction has 30466 states and 43666 transitions. [2023-11-19 07:57:17,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 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) [2023-11-19 07:57:17,698 INFO L276 IsEmpty]: Start isEmpty. Operand 30466 states and 43666 transitions. [2023-11-19 07:57:17,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-19 07:57:17,704 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:17,704 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:17,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 07:57:17,705 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:57:17,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:17,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1682023015, now seen corresponding path program 1 times [2023-11-19 07:57:17,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:17,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249973538] [2023-11-19 07:57:17,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:17,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:17,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:17,962 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 07:57:17,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:17,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249973538] [2023-11-19 07:57:17,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249973538] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:17,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:17,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:57:17,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188292341] [2023-11-19 07:57:17,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:17,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:57:17,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:17,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:57:17,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:57:17,965 INFO L87 Difference]: Start difference. First operand 30466 states and 43666 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 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) [2023-11-19 07:57:19,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:19,929 INFO L93 Difference]: Finished difference Result 68656 states and 98521 transitions. [2023-11-19 07:57:19,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:57:19,930 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 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) Word has length 90 [2023-11-19 07:57:19,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:20,031 INFO L225 Difference]: With dead ends: 68656 [2023-11-19 07:57:20,032 INFO L226 Difference]: Without dead ends: 61966 [2023-11-19 07:57:20,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:57:20,048 INFO L413 NwaCegarLoop]: 1631 mSDtfsCounter, 8179 mSDsluCounter, 2315 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8179 SdHoareTripleChecker+Valid, 3946 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:20,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8179 Valid, 3946 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:57:20,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61966 states. [2023-11-19 07:57:21,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61966 to 37154. [2023-11-19 07:57:22,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37154 states, 37152 states have (on average 1.4311477174849268) internal successors, (53170), 37153 states have internal predecessors, (53170), 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) [2023-11-19 07:57:22,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37154 states to 37154 states and 53170 transitions. [2023-11-19 07:57:22,095 INFO L78 Accepts]: Start accepts. Automaton has 37154 states and 53170 transitions. Word has length 90 [2023-11-19 07:57:22,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:22,096 INFO L495 AbstractCegarLoop]: Abstraction has 37154 states and 53170 transitions. [2023-11-19 07:57:22,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 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) [2023-11-19 07:57:22,096 INFO L276 IsEmpty]: Start isEmpty. Operand 37154 states and 53170 transitions. [2023-11-19 07:57:22,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-19 07:57:22,102 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:22,103 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:22,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-19 07:57:22,103 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:57:22,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:22,104 INFO L85 PathProgramCache]: Analyzing trace with hash -832011417, now seen corresponding path program 1 times [2023-11-19 07:57:22,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:22,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458479600] [2023-11-19 07:57:22,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:22,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:22,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:22,310 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 07:57:22,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:22,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458479600] [2023-11-19 07:57:22,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458479600] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:22,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:22,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:57:22,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397258085] [2023-11-19 07:57:22,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:22,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:57:22,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:22,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:57:22,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:57:22,313 INFO L87 Difference]: Start difference. First operand 37154 states and 53170 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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) [2023-11-19 07:57:24,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:24,437 INFO L93 Difference]: Finished difference Result 75344 states and 108025 transitions. [2023-11-19 07:57:24,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:57:24,438 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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) Word has length 90 [2023-11-19 07:57:24,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:24,534 INFO L225 Difference]: With dead ends: 75344 [2023-11-19 07:57:24,534 INFO L226 Difference]: Without dead ends: 68654 [2023-11-19 07:57:24,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:57:24,551 INFO L413 NwaCegarLoop]: 1631 mSDtfsCounter, 8092 mSDsluCounter, 2375 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8092 SdHoareTripleChecker+Valid, 4006 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:24,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8092 Valid, 4006 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]