./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec235c8-0999-46cb-b935-5e0e92607a9a/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec235c8-0999-46cb-b935-5e0e92607a9a/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec235c8-0999-46cb-b935-5e0e92607a9a/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec235c8-0999-46cb-b935-5e0e92607a9a/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec235c8-0999-46cb-b935-5e0e92607a9a/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec235c8-0999-46cb-b935-5e0e92607a9a/bin/uautomizer-verify-uTZkv6EMXl --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 20bccc5c4039b31e1359e00bb81f308547d82590fa0687937b9518c1e6a7a105 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:17:00,711 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:17:00,828 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec235c8-0999-46cb-b935-5e0e92607a9a/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:17:00,834 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:17:00,835 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:17:00,877 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:17:00,878 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:17:00,879 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:17:00,880 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:17:00,885 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:17:00,887 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:17:00,887 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:17:00,888 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:17:00,890 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:17:00,891 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:17:00,891 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:17:00,892 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:17:00,892 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:17:00,893 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:17:00,893 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:17:00,893 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:17:00,894 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:17:00,895 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:17:00,895 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:17:00,895 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:17:00,896 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:17:00,897 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:17:00,897 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:17:00,898 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:17:00,898 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:17:00,900 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:17:00,900 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:17:00,900 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:17:00,901 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:17:00,901 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:17:00,901 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:17:00,901 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:17:00,902 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:17:00,902 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:17:00,902 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_1ec235c8-0999-46cb-b935-5e0e92607a9a/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec235c8-0999-46cb-b935-5e0e92607a9a/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20bccc5c4039b31e1359e00bb81f308547d82590fa0687937b9518c1e6a7a105 [2023-11-12 02:17:01,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:17:01,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:17:01,297 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:17:01,299 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:17:01,300 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:17:01,301 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec235c8-0999-46cb-b935-5e0e92607a9a/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c [2023-11-12 02:17:04,566 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:17:05,222 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:17:05,222 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec235c8-0999-46cb-b935-5e0e92607a9a/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c [2023-11-12 02:17:05,264 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec235c8-0999-46cb-b935-5e0e92607a9a/bin/uautomizer-verify-uTZkv6EMXl/data/dd022d82d/898187685dfa4993a59cc9854c2a0c82/FLAG2543515fc [2023-11-12 02:17:05,657 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec235c8-0999-46cb-b935-5e0e92607a9a/bin/uautomizer-verify-uTZkv6EMXl/data/dd022d82d/898187685dfa4993a59cc9854c2a0c82 [2023-11-12 02:17:05,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:17:05,664 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:17:05,668 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:17:05,668 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:17:05,674 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:17:05,674 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:17:05" (1/1) ... [2023-11-12 02:17:05,676 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8b30ce6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:05, skipping insertion in model container [2023-11-12 02:17:05,676 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:17:05" (1/1) ... [2023-11-12 02:17:05,872 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:17:06,283 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_1ec235c8-0999-46cb-b935-5e0e92607a9a/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c[6354,6367] [2023-11-12 02:17:06,362 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_1ec235c8-0999-46cb-b935-5e0e92607a9a/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c[9861,9874] [2023-11-12 02:17:07,625 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:17:07,640 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:17:07,680 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_1ec235c8-0999-46cb-b935-5e0e92607a9a/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c[6354,6367] [2023-11-12 02:17:07,700 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_1ec235c8-0999-46cb-b935-5e0e92607a9a/sv-benchmarks/c/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c[9861,9874] [2023-11-12 02:17:08,335 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:17:08,373 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:17:08,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:08 WrapperNode [2023-11-12 02:17:08,374 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:17:08,376 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:17:08,376 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:17:08,376 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:17:08,385 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:08" (1/1) ... [2023-11-12 02:17:08,460 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:08" (1/1) ... [2023-11-12 02:17:08,835 INFO L138 Inliner]: procedures = 33, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 4979 [2023-11-12 02:17:08,836 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:17:08,837 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:17:08,837 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:17:08,837 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:17:08,849 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:08" (1/1) ... [2023-11-12 02:17:08,849 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:08" (1/1) ... [2023-11-12 02:17:08,990 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:08" (1/1) ... [2023-11-12 02:17:09,003 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:08" (1/1) ... [2023-11-12 02:17:09,201 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:08" (1/1) ... [2023-11-12 02:17:09,296 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:08" (1/1) ... [2023-11-12 02:17:09,351 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:08" (1/1) ... [2023-11-12 02:17:09,364 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:08" (1/1) ... [2023-11-12 02:17:09,452 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:17:09,453 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:17:09,454 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:17:09,454 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:17:09,455 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:08" (1/1) ... [2023-11-12 02:17:09,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:17:09,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec235c8-0999-46cb-b935-5e0e92607a9a/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:09,498 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec235c8-0999-46cb-b935-5e0e92607a9a/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:17:09,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec235c8-0999-46cb-b935-5e0e92607a9a/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:17:09,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:17:09,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:17:09,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:17:09,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:17:09,656 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:17:09,658 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:17:15,404 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:17:15,424 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:17:15,425 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 02:17:15,430 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:17:15 BoogieIcfgContainer [2023-11-12 02:17:15,430 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:17:15,433 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:17:15,433 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:17:15,437 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:17:15,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:17:05" (1/3) ... [2023-11-12 02:17:15,438 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62a3a9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:17:15, skipping insertion in model container [2023-11-12 02:17:15,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:08" (2/3) ... [2023-11-12 02:17:15,439 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62a3a9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:17:15, skipping insertion in model container [2023-11-12 02:17:15,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:17:15" (3/3) ... [2023-11-12 02:17:15,441 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label08.c [2023-11-12 02:17:15,466 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:17:15,466 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-12 02:17:15,566 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:17:15,575 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;@6870eb48, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:17:15,575 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-12 02:17:15,589 INFO L276 IsEmpty]: Start isEmpty. Operand has 872 states, 869 states have (on average 1.906789413118527) internal successors, (1657), 871 states have internal predecessors, (1657), 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) [2023-11-12 02:17:15,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-12 02:17:15,600 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:17:15,601 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] [2023-11-12 02:17:15,602 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:17:15,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:15,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1537187155, now seen corresponding path program 1 times [2023-11-12 02:17:15,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:15,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854927271] [2023-11-12 02:17:15,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:15,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:15,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:15,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:15,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854927271] [2023-11-12 02:17:15,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854927271] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:15,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:15,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:17:15,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965084660] [2023-11-12 02:17:15,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:15,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:17:15,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:16,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:17:16,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:17:16,023 INFO L87 Difference]: Start difference. First operand has 872 states, 869 states have (on average 1.906789413118527) internal successors, (1657), 871 states have internal predecessors, (1657), 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 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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) [2023-11-12 02:17:16,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:16,200 INFO L93 Difference]: Finished difference Result 1722 states and 3274 transitions. [2023-11-12 02:17:16,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:17:16,203 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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 20 [2023-11-12 02:17:16,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:17:16,237 INFO L225 Difference]: With dead ends: 1722 [2023-11-12 02:17:16,237 INFO L226 Difference]: Without dead ends: 806 [2023-11-12 02:17:16,249 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 [2023-11-12 02:17:16,254 INFO L413 NwaCegarLoop]: 1591 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, 1591 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 [2023-11-12 02:17:16,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1591 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:17:16,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2023-11-12 02:17:16,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 806. [2023-11-12 02:17:16,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 804 states have (on average 1.8955223880597014) internal successors, (1524), 805 states have internal predecessors, (1524), 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) [2023-11-12 02:17:16,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1524 transitions. [2023-11-12 02:17:16,392 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1524 transitions. Word has length 20 [2023-11-12 02:17:16,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:17:16,393 INFO L495 AbstractCegarLoop]: Abstraction has 806 states and 1524 transitions. [2023-11-12 02:17:16,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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) [2023-11-12 02:17:16,393 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1524 transitions. [2023-11-12 02:17:16,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-12 02:17:16,396 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:17:16,396 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] [2023-11-12 02:17:16,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:17:16,397 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:17:16,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:16,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1746662891, now seen corresponding path program 1 times [2023-11-12 02:17:16,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:16,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142681297] [2023-11-12 02:17:16,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:16,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:16,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:16,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:16,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142681297] [2023-11-12 02:17:16,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142681297] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:16,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:16,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:17:16,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852658163] [2023-11-12 02:17:16,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:16,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:17:16,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:16,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:17:16,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:17:16,670 INFO L87 Difference]: Start difference. First operand 806 states and 1524 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2023-11-12 02:17:16,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:16,875 INFO L93 Difference]: Finished difference Result 870 states and 1622 transitions. [2023-11-12 02:17:16,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:17:16,876 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 20 [2023-11-12 02:17:16,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:17:16,883 INFO L225 Difference]: With dead ends: 870 [2023-11-12 02:17:16,884 INFO L226 Difference]: Without dead ends: 836 [2023-11-12 02:17:16,888 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 [2023-11-12 02:17:16,890 INFO L413 NwaCegarLoop]: 1520 mSDtfsCounter, 48 mSDsluCounter, 4538 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 6058 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:17:16,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 6058 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:17:16,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2023-11-12 02:17:16,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 806. [2023-11-12 02:17:16,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 804 states have (on average 1.8756218905472637) internal successors, (1508), 805 states have internal predecessors, (1508), 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) [2023-11-12 02:17:16,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1508 transitions. [2023-11-12 02:17:16,926 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1508 transitions. Word has length 20 [2023-11-12 02:17:16,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:17:16,927 INFO L495 AbstractCegarLoop]: Abstraction has 806 states and 1508 transitions. [2023-11-12 02:17:16,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2023-11-12 02:17:16,927 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1508 transitions. [2023-11-12 02:17:16,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-12 02:17:16,930 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:17:16,930 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] [2023-11-12 02:17:16,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:17:16,932 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:17:16,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:16,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1506873901, now seen corresponding path program 1 times [2023-11-12 02:17:16,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:16,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258129449] [2023-11-12 02:17:16,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:16,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:16,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:17,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:17,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:17,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258129449] [2023-11-12 02:17:17,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258129449] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:17,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:17,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:17:17,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754305405] [2023-11-12 02:17:17,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:17,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:17:17,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:17,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:17:17,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:17:17,132 INFO L87 Difference]: Start difference. First operand 806 states and 1508 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 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) [2023-11-12 02:17:22,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:22,141 INFO L93 Difference]: Finished difference Result 2310 states and 4381 transitions. [2023-11-12 02:17:22,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:17:22,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 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 30 [2023-11-12 02:17:22,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:17:22,155 INFO L225 Difference]: With dead ends: 2310 [2023-11-12 02:17:22,155 INFO L226 Difference]: Without dead ends: 1557 [2023-11-12 02:17:22,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:17:22,158 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 908 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2377 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 3088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 2377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-12 02:17:22,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 184 Invalid, 3088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 2377 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-11-12 02:17:22,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1557 states. [2023-11-12 02:17:22,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1557 to 1557. [2023-11-12 02:17:22,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1557 states, 1555 states have (on average 1.8308681672025724) internal successors, (2847), 1556 states have internal predecessors, (2847), 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) [2023-11-12 02:17:22,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1557 states to 1557 states and 2847 transitions. [2023-11-12 02:17:22,213 INFO L78 Accepts]: Start accepts. Automaton has 1557 states and 2847 transitions. Word has length 30 [2023-11-12 02:17:22,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:17:22,214 INFO L495 AbstractCegarLoop]: Abstraction has 1557 states and 2847 transitions. [2023-11-12 02:17:22,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 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) [2023-11-12 02:17:22,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1557 states and 2847 transitions. [2023-11-12 02:17:22,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-12 02:17:22,216 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:17:22,216 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] [2023-11-12 02:17:22,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:17:22,217 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:17:22,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:22,218 INFO L85 PathProgramCache]: Analyzing trace with hash 623816355, now seen corresponding path program 1 times [2023-11-12 02:17:22,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:22,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294925353] [2023-11-12 02:17:22,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:22,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:22,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:22,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:22,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:22,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294925353] [2023-11-12 02:17:22,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294925353] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:22,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:22,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:17:22,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069329361] [2023-11-12 02:17:22,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:22,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:17:22,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:22,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:17:22,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:17:22,318 INFO L87 Difference]: Start difference. First operand 1557 states and 2847 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2023-11-12 02:17:22,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:22,465 INFO L93 Difference]: Finished difference Result 1737 states and 3129 transitions. [2023-11-12 02:17:22,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:17:22,466 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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 35 [2023-11-12 02:17:22,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:17:22,477 INFO L225 Difference]: With dead ends: 1737 [2023-11-12 02:17:22,478 INFO L226 Difference]: Without dead ends: 1707 [2023-11-12 02:17:22,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:17:22,480 INFO L413 NwaCegarLoop]: 1504 mSDtfsCounter, 4589 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4589 SdHoareTripleChecker+Valid, 1865 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:17:22,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4589 Valid, 1865 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:17:22,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2023-11-12 02:17:22,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1585. [2023-11-12 02:17:22,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1583 states have (on average 1.8262792166771953) internal successors, (2891), 1584 states have internal predecessors, (2891), 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) [2023-11-12 02:17:22,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2891 transitions. [2023-11-12 02:17:22,531 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2891 transitions. Word has length 35 [2023-11-12 02:17:22,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:17:22,532 INFO L495 AbstractCegarLoop]: Abstraction has 1585 states and 2891 transitions. [2023-11-12 02:17:22,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2023-11-12 02:17:22,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2891 transitions. [2023-11-12 02:17:22,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-12 02:17:22,534 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:17:22,535 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] [2023-11-12 02:17:22,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:17:22,535 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:17:22,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:22,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1071361683, now seen corresponding path program 1 times [2023-11-12 02:17:22,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:22,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511061464] [2023-11-12 02:17:22,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:22,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:22,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:22,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:22,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:22,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511061464] [2023-11-12 02:17:22,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511061464] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:22,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:22,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:17:22,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747361398] [2023-11-12 02:17:22,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:22,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:17:22,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:22,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:17:22,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:17:22,598 INFO L87 Difference]: Start difference. First operand 1585 states and 2891 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2023-11-12 02:17:22,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:22,645 INFO L93 Difference]: Finished difference Result 1690 states and 3054 transitions. [2023-11-12 02:17:22,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:17:22,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 37 [2023-11-12 02:17:22,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:17:22,656 INFO L225 Difference]: With dead ends: 1690 [2023-11-12 02:17:22,657 INFO L226 Difference]: Without dead ends: 1632 [2023-11-12 02:17:22,658 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 [2023-11-12 02:17:22,659 INFO L413 NwaCegarLoop]: 1506 mSDtfsCounter, 1466 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 1548 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 [2023-11-12 02:17:22,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 1548 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:17:22,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2023-11-12 02:17:22,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1630. [2023-11-12 02:17:22,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1628 states have (on average 1.8175675675675675) internal successors, (2959), 1629 states have internal predecessors, (2959), 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) [2023-11-12 02:17:22,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 2959 transitions. [2023-11-12 02:17:22,708 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 2959 transitions. Word has length 37 [2023-11-12 02:17:22,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:17:22,708 INFO L495 AbstractCegarLoop]: Abstraction has 1630 states and 2959 transitions. [2023-11-12 02:17:22,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2023-11-12 02:17:22,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 2959 transitions. [2023-11-12 02:17:22,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-12 02:17:22,710 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:17:22,710 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] [2023-11-12 02:17:22,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:17:22,711 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:17:22,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:22,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1137855195, now seen corresponding path program 1 times [2023-11-12 02:17:22,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:22,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792086736] [2023-11-12 02:17:22,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:22,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:22,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:22,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:22,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:22,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792086736] [2023-11-12 02:17:22,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792086736] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:22,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:22,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:17:22,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957253596] [2023-11-12 02:17:22,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:22,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:17:22,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:22,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:17:22,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:17:22,937 INFO L87 Difference]: Start difference. First operand 1630 states and 2959 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2023-11-12 02:17:23,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:23,034 INFO L93 Difference]: Finished difference Result 1735 states and 3119 transitions. [2023-11-12 02:17:23,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:17:23,036 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 37 [2023-11-12 02:17:23,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:17:23,048 INFO L225 Difference]: With dead ends: 1735 [2023-11-12 02:17:23,048 INFO L226 Difference]: Without dead ends: 1632 [2023-11-12 02:17:23,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:17:23,050 INFO L413 NwaCegarLoop]: 1503 mSDtfsCounter, 2946 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2946 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:17:23,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2946 Valid, 1592 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:17:23,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2023-11-12 02:17:23,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1630. [2023-11-12 02:17:23,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1628 states have (on average 1.8163390663390664) internal successors, (2957), 1629 states have internal predecessors, (2957), 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) [2023-11-12 02:17:23,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 2957 transitions. [2023-11-12 02:17:23,099 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 2957 transitions. Word has length 37 [2023-11-12 02:17:23,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:17:23,100 INFO L495 AbstractCegarLoop]: Abstraction has 1630 states and 2957 transitions. [2023-11-12 02:17:23,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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) [2023-11-12 02:17:23,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 2957 transitions. [2023-11-12 02:17:23,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-12 02:17:23,101 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:17:23,101 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] [2023-11-12 02:17:23,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:17:23,102 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:17:23,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:23,102 INFO L85 PathProgramCache]: Analyzing trace with hash 499049456, now seen corresponding path program 1 times [2023-11-12 02:17:23,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:23,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091972410] [2023-11-12 02:17:23,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:23,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:23,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:23,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:23,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:23,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091972410] [2023-11-12 02:17:23,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091972410] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:23,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:23,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:17:23,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450374734] [2023-11-12 02:17:23,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:23,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:17:23,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:23,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:17:23,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:17:23,260 INFO L87 Difference]: Start difference. First operand 1630 states and 2957 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2023-11-12 02:17:23,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:23,347 INFO L93 Difference]: Finished difference Result 1701 states and 3066 transitions. [2023-11-12 02:17:23,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:17:23,348 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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 38 [2023-11-12 02:17:23,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:17:23,359 INFO L225 Difference]: With dead ends: 1701 [2023-11-12 02:17:23,359 INFO L226 Difference]: Without dead ends: 1699 [2023-11-12 02:17:23,360 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 [2023-11-12 02:17:23,361 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 35 mSDsluCounter, 4568 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 6104 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 [2023-11-12 02:17:23,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 6104 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:17:23,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2023-11-12 02:17:23,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1636. [2023-11-12 02:17:23,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1636 states, 1634 states have (on average 1.8127294981640147) internal successors, (2962), 1635 states have internal predecessors, (2962), 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) [2023-11-12 02:17:23,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 2962 transitions. [2023-11-12 02:17:23,411 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 2962 transitions. Word has length 38 [2023-11-12 02:17:23,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:17:23,412 INFO L495 AbstractCegarLoop]: Abstraction has 1636 states and 2962 transitions. [2023-11-12 02:17:23,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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) [2023-11-12 02:17:23,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 2962 transitions. [2023-11-12 02:17:23,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-12 02:17:23,414 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:17:23,414 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] [2023-11-12 02:17:23,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:17:23,414 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:17:23,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:23,415 INFO L85 PathProgramCache]: Analyzing trace with hash 166228827, now seen corresponding path program 1 times [2023-11-12 02:17:23,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:23,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376740879] [2023-11-12 02:17:23,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:23,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:23,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:23,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:23,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376740879] [2023-11-12 02:17:23,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376740879] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:23,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:23,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:17:23,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931419619] [2023-11-12 02:17:23,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:23,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:17:23,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:23,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:17:23,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:17:23,462 INFO L87 Difference]: Start difference. First operand 1636 states and 2962 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2023-11-12 02:17:23,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:23,504 INFO L93 Difference]: Finished difference Result 1758 states and 3143 transitions. [2023-11-12 02:17:23,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:17:23,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2023-11-12 02:17:23,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:17:23,517 INFO L225 Difference]: With dead ends: 1758 [2023-11-12 02:17:23,517 INFO L226 Difference]: Without dead ends: 1694 [2023-11-12 02:17:23,518 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 [2023-11-12 02:17:23,520 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 1476 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1588 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 [2023-11-12 02:17:23,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1588 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:17:23,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2023-11-12 02:17:23,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 1692. [2023-11-12 02:17:23,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1692 states, 1690 states have (on average 1.8005917159763314) internal successors, (3043), 1691 states have internal predecessors, (3043), 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) [2023-11-12 02:17:23,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1692 states to 1692 states and 3043 transitions. [2023-11-12 02:17:23,574 INFO L78 Accepts]: Start accepts. Automaton has 1692 states and 3043 transitions. Word has length 39 [2023-11-12 02:17:23,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:17:23,575 INFO L495 AbstractCegarLoop]: Abstraction has 1692 states and 3043 transitions. [2023-11-12 02:17:23,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2023-11-12 02:17:23,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1692 states and 3043 transitions. [2023-11-12 02:17:23,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-12 02:17:23,576 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:17:23,576 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] [2023-11-12 02:17:23,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:17:23,576 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:17:23,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:23,577 INFO L85 PathProgramCache]: Analyzing trace with hash -2049239973, now seen corresponding path program 1 times [2023-11-12 02:17:23,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:23,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99118174] [2023-11-12 02:17:23,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:23,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:23,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:23,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:23,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99118174] [2023-11-12 02:17:23,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99118174] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:23,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:23,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:17:23,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48335200] [2023-11-12 02:17:23,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:23,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:17:23,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:23,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:17:23,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:17:23,650 INFO L87 Difference]: Start difference. First operand 1692 states and 3043 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2023-11-12 02:17:23,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:23,697 INFO L93 Difference]: Finished difference Result 1994 states and 3483 transitions. [2023-11-12 02:17:23,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:17:23,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2023-11-12 02:17:23,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:17:23,709 INFO L225 Difference]: With dead ends: 1994 [2023-11-12 02:17:23,709 INFO L226 Difference]: Without dead ends: 1831 [2023-11-12 02:17:23,710 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 [2023-11-12 02:17:23,711 INFO L413 NwaCegarLoop]: 1542 mSDtfsCounter, 1474 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1594 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 [2023-11-12 02:17:23,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1594 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:17:23,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1831 states. [2023-11-12 02:17:23,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1831 to 1829. [2023-11-12 02:17:23,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1827 states have (on average 1.7706622879036673) internal successors, (3235), 1828 states have internal predecessors, (3235), 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) [2023-11-12 02:17:23,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 3235 transitions. [2023-11-12 02:17:23,770 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 3235 transitions. Word has length 39 [2023-11-12 02:17:23,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:17:23,770 INFO L495 AbstractCegarLoop]: Abstraction has 1829 states and 3235 transitions. [2023-11-12 02:17:23,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2023-11-12 02:17:23,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 3235 transitions. [2023-11-12 02:17:23,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-12 02:17:23,771 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:17:23,771 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] [2023-11-12 02:17:23,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:17:23,772 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:17:23,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:23,772 INFO L85 PathProgramCache]: Analyzing trace with hash -268307109, now seen corresponding path program 1 times [2023-11-12 02:17:23,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:23,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906055398] [2023-11-12 02:17:23,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:23,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:23,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:23,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:23,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:23,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906055398] [2023-11-12 02:17:23,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906055398] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:23,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:23,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:17:23,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354186834] [2023-11-12 02:17:23,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:23,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:17:23,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:23,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:17:23,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:17:23,815 INFO L87 Difference]: Start difference. First operand 1829 states and 3235 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2023-11-12 02:17:23,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:23,867 INFO L93 Difference]: Finished difference Result 2381 states and 4017 transitions. [2023-11-12 02:17:23,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:17:23,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 39 [2023-11-12 02:17:23,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:17:23,880 INFO L225 Difference]: With dead ends: 2381 [2023-11-12 02:17:23,881 INFO L226 Difference]: Without dead ends: 2081 [2023-11-12 02:17:23,882 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 [2023-11-12 02:17:23,883 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 1472 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1596 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 [2023-11-12 02:17:23,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1596 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:17:23,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2081 states. [2023-11-12 02:17:23,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2081 to 2079. [2023-11-12 02:17:23,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2079 states, 2077 states have (on average 1.719306692344728) internal successors, (3571), 2078 states have internal predecessors, (3571), 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) [2023-11-12 02:17:23,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2079 states to 2079 states and 3571 transitions. [2023-11-12 02:17:23,953 INFO L78 Accepts]: Start accepts. Automaton has 2079 states and 3571 transitions. Word has length 39 [2023-11-12 02:17:23,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:17:23,953 INFO L495 AbstractCegarLoop]: Abstraction has 2079 states and 3571 transitions. [2023-11-12 02:17:23,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2023-11-12 02:17:23,953 INFO L276 IsEmpty]: Start isEmpty. Operand 2079 states and 3571 transitions. [2023-11-12 02:17:23,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-12 02:17:23,955 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:17:23,955 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-12 02:17:23,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:17:23,955 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:17:23,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:23,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1567417933, now seen corresponding path program 1 times [2023-11-12 02:17:23,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:23,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504219324] [2023-11-12 02:17:23,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:23,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:23,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:24,096 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:17:24,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:24,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504219324] [2023-11-12 02:17:24,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504219324] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:24,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:24,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:17:24,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629794521] [2023-11-12 02:17:24,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:24,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:17:24,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:24,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:17:24,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:17:24,099 INFO L87 Difference]: Start difference. First operand 2079 states and 3571 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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) [2023-11-12 02:17:24,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:24,258 INFO L93 Difference]: Finished difference Result 3711 states and 5847 transitions. [2023-11-12 02:17:24,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:17:24,259 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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 54 [2023-11-12 02:17:24,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:17:24,278 INFO L225 Difference]: With dead ends: 3711 [2023-11-12 02:17:24,278 INFO L226 Difference]: Without dead ends: 3309 [2023-11-12 02:17:24,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:17:24,281 INFO L413 NwaCegarLoop]: 1548 mSDtfsCounter, 3037 mSDsluCounter, 1624 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3037 SdHoareTripleChecker+Valid, 3172 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:17:24,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3037 Valid, 3172 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:17:24,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3309 states. [2023-11-12 02:17:24,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3309 to 2555. [2023-11-12 02:17:24,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2555 states, 2553 states have (on average 1.6556991774383079) internal successors, (4227), 2554 states have internal predecessors, (4227), 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) [2023-11-12 02:17:24,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2555 states to 2555 states and 4227 transitions. [2023-11-12 02:17:24,378 INFO L78 Accepts]: Start accepts. Automaton has 2555 states and 4227 transitions. Word has length 54 [2023-11-12 02:17:24,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:17:24,378 INFO L495 AbstractCegarLoop]: Abstraction has 2555 states and 4227 transitions. [2023-11-12 02:17:24,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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) [2023-11-12 02:17:24,379 INFO L276 IsEmpty]: Start isEmpty. Operand 2555 states and 4227 transitions. [2023-11-12 02:17:24,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-12 02:17:24,380 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:17:24,380 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-12 02:17:24,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:17:24,380 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:17:24,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:24,381 INFO L85 PathProgramCache]: Analyzing trace with hash -648050867, now seen corresponding path program 1 times [2023-11-12 02:17:24,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:24,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868759543] [2023-11-12 02:17:24,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:24,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:24,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:24,485 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:17:24,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:24,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868759543] [2023-11-12 02:17:24,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868759543] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:24,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:24,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:17:24,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023983104] [2023-11-12 02:17:24,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:24,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:17:24,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:24,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:17:24,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:17:24,487 INFO L87 Difference]: Start difference. First operand 2555 states and 4227 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2023-11-12 02:17:24,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:24,645 INFO L93 Difference]: Finished difference Result 4259 states and 6607 transitions. [2023-11-12 02:17:24,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:17:24,646 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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 54 [2023-11-12 02:17:24,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:17:24,686 INFO L225 Difference]: With dead ends: 4259 [2023-11-12 02:17:24,687 INFO L226 Difference]: Without dead ends: 3709 [2023-11-12 02:17:24,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:17:24,689 INFO L413 NwaCegarLoop]: 1547 mSDtfsCounter, 3041 mSDsluCounter, 1600 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3041 SdHoareTripleChecker+Valid, 3147 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:17:24,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3041 Valid, 3147 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:17:24,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3709 states. [2023-11-12 02:17:24,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3709 to 3303. [2023-11-12 02:17:24,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3301 states have (on average 1.5919418358073312) internal successors, (5255), 3302 states have internal predecessors, (5255), 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) [2023-11-12 02:17:24,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 5255 transitions. [2023-11-12 02:17:24,821 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 5255 transitions. Word has length 54 [2023-11-12 02:17:24,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:17:24,821 INFO L495 AbstractCegarLoop]: Abstraction has 3303 states and 5255 transitions. [2023-11-12 02:17:24,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 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) [2023-11-12 02:17:24,821 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 5255 transitions. [2023-11-12 02:17:24,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-12 02:17:24,823 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:17:24,823 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-12 02:17:24,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 02:17:24,823 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:17:24,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:24,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1132881997, now seen corresponding path program 1 times [2023-11-12 02:17:24,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:24,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571992940] [2023-11-12 02:17:24,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:24,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:24,945 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 02:17:24,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:24,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571992940] [2023-11-12 02:17:24,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571992940] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:24,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:24,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:17:24,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771244297] [2023-11-12 02:17:24,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:24,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:17:24,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:24,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:17:24,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:17:24,948 INFO L87 Difference]: Start difference. First operand 3303 states and 5255 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2023-11-12 02:17:25,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:25,121 INFO L93 Difference]: Finished difference Result 4807 states and 7363 transitions. [2023-11-12 02:17:25,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:17:25,122 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 54 [2023-11-12 02:17:25,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:17:25,133 INFO L225 Difference]: With dead ends: 4807 [2023-11-12 02:17:25,133 INFO L226 Difference]: Without dead ends: 4257 [2023-11-12 02:17:25,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:17:25,137 INFO L413 NwaCegarLoop]: 1546 mSDtfsCounter, 3047 mSDsluCounter, 1607 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3047 SdHoareTripleChecker+Valid, 3153 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:17:25,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3047 Valid, 3153 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:17:25,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4257 states. [2023-11-12 02:17:25,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4257 to 3851. [2023-11-12 02:17:25,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3851 states, 3849 states have (on average 1.561704338789296) internal successors, (6011), 3850 states have internal predecessors, (6011), 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) [2023-11-12 02:17:25,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3851 states to 3851 states and 6011 transitions. [2023-11-12 02:17:25,364 INFO L78 Accepts]: Start accepts. Automaton has 3851 states and 6011 transitions. Word has length 54 [2023-11-12 02:17:25,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:17:25,365 INFO L495 AbstractCegarLoop]: Abstraction has 3851 states and 6011 transitions. [2023-11-12 02:17:25,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2023-11-12 02:17:25,366 INFO L276 IsEmpty]: Start isEmpty. Operand 3851 states and 6011 transitions. [2023-11-12 02:17:25,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-12 02:17:25,367 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:17:25,368 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-12 02:17:25,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 02:17:25,368 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:17:25,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:25,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1336470191, now seen corresponding path program 1 times [2023-11-12 02:17:25,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:25,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541822064] [2023-11-12 02:17:25,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:25,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:25,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:25,475 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:25,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:25,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541822064] [2023-11-12 02:17:25,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541822064] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:25,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:25,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:17:25,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471701818] [2023-11-12 02:17:25,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:25,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:17:25,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:25,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:17:25,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:17:25,478 INFO L87 Difference]: Start difference. First operand 3851 states and 6011 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2023-11-12 02:17:25,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:25,619 INFO L93 Difference]: Finished difference Result 6175 states and 9221 transitions. [2023-11-12 02:17:25,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:17:25,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 55 [2023-11-12 02:17:25,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:17:25,630 INFO L225 Difference]: With dead ends: 6175 [2023-11-12 02:17:25,630 INFO L226 Difference]: Without dead ends: 3853 [2023-11-12 02:17:25,634 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 [2023-11-12 02:17:25,635 INFO L413 NwaCegarLoop]: 1526 mSDtfsCounter, 29 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3022 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:17:25,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3022 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:17:25,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3853 states. [2023-11-12 02:17:25,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3853 to 3851. [2023-11-12 02:17:25,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3851 states, 3849 states have (on average 1.54871395167576) internal successors, (5961), 3850 states have internal predecessors, (5961), 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) [2023-11-12 02:17:25,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3851 states to 3851 states and 5961 transitions. [2023-11-12 02:17:25,807 INFO L78 Accepts]: Start accepts. Automaton has 3851 states and 5961 transitions. Word has length 55 [2023-11-12 02:17:25,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:17:25,808 INFO L495 AbstractCegarLoop]: Abstraction has 3851 states and 5961 transitions. [2023-11-12 02:17:25,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2023-11-12 02:17:25,808 INFO L276 IsEmpty]: Start isEmpty. Operand 3851 states and 5961 transitions. [2023-11-12 02:17:25,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-12 02:17:25,810 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:17:25,810 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-12 02:17:25,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 02:17:25,810 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:17:25,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:25,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1355833083, now seen corresponding path program 1 times [2023-11-12 02:17:25,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:25,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354837759] [2023-11-12 02:17:25,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:25,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:25,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:25,928 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:25,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:25,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354837759] [2023-11-12 02:17:25,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354837759] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:25,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:25,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:17:25,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171880885] [2023-11-12 02:17:25,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:25,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:17:25,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:25,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:17:25,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:17:25,931 INFO L87 Difference]: Start difference. First operand 3851 states and 5961 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2023-11-12 02:17:25,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:25,998 INFO L93 Difference]: Finished difference Result 4770 states and 7221 transitions. [2023-11-12 02:17:25,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:17:25,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2023-11-12 02:17:25,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:17:26,004 INFO L225 Difference]: With dead ends: 4770 [2023-11-12 02:17:26,004 INFO L226 Difference]: Without dead ends: 2448 [2023-11-12 02:17:26,009 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 [2023-11-12 02:17:26,010 INFO L413 NwaCegarLoop]: 1524 mSDtfsCounter, 23 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3019 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:17:26,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3019 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:17:26,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2448 states. [2023-11-12 02:17:26,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2448 to 2440. [2023-11-12 02:17:26,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2440 states, 2438 states have (on average 1.6554552912223133) internal successors, (4036), 2439 states have internal predecessors, (4036), 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) [2023-11-12 02:17:26,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2440 states to 2440 states and 4036 transitions. [2023-11-12 02:17:26,082 INFO L78 Accepts]: Start accepts. Automaton has 2440 states and 4036 transitions. Word has length 56 [2023-11-12 02:17:26,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:17:26,083 INFO L495 AbstractCegarLoop]: Abstraction has 2440 states and 4036 transitions. [2023-11-12 02:17:26,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2023-11-12 02:17:26,083 INFO L276 IsEmpty]: Start isEmpty. Operand 2440 states and 4036 transitions. [2023-11-12 02:17:26,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-12 02:17:26,084 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:17:26,084 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-12 02:17:26,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-12 02:17:26,084 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:17:26,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:26,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1597882527, now seen corresponding path program 1 times [2023-11-12 02:17:26,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:26,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444543258] [2023-11-12 02:17:26,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:26,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:26,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:26,170 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:26,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:26,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444543258] [2023-11-12 02:17:26,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444543258] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:26,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:26,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:17:26,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916792249] [2023-11-12 02:17:26,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:26,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:17:26,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:26,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:17:26,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:17:26,173 INFO L87 Difference]: Start difference. First operand 2440 states and 4036 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2023-11-12 02:17:26,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:26,212 INFO L93 Difference]: Finished difference Result 2894 states and 4650 transitions. [2023-11-12 02:17:26,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:17:26,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2023-11-12 02:17:26,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:17:26,217 INFO L225 Difference]: With dead ends: 2894 [2023-11-12 02:17:26,217 INFO L226 Difference]: Without dead ends: 1992 [2023-11-12 02:17:26,219 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 [2023-11-12 02:17:26,219 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 25 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2998 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:17:26,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2998 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:17:26,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2023-11-12 02:17:26,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1990. [2023-11-12 02:17:26,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1990 states, 1988 states have (on average 1.7178068410462777) internal successors, (3415), 1989 states have internal predecessors, (3415), 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) [2023-11-12 02:17:26,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1990 states to 1990 states and 3415 transitions. [2023-11-12 02:17:26,278 INFO L78 Accepts]: Start accepts. Automaton has 1990 states and 3415 transitions. Word has length 57 [2023-11-12 02:17:26,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:17:26,279 INFO L495 AbstractCegarLoop]: Abstraction has 1990 states and 3415 transitions. [2023-11-12 02:17:26,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2023-11-12 02:17:26,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1990 states and 3415 transitions. [2023-11-12 02:17:26,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-12 02:17:26,282 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:17:26,283 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-12 02:17:26,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-12 02:17:26,283 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:17:26,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:26,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1649038701, now seen corresponding path program 1 times [2023-11-12 02:17:26,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:26,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620725683] [2023-11-12 02:17:26,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:26,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:26,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:26,490 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:17:26,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:26,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620725683] [2023-11-12 02:17:26,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620725683] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:17:26,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065524379] [2023-11-12 02:17:26,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:26,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:17:26,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec235c8-0999-46cb-b935-5e0e92607a9a/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:26,494 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec235c8-0999-46cb-b935-5e0e92607a9a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:17:26,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec235c8-0999-46cb-b935-5e0e92607a9a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:17:26,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:26,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-12 02:17:26,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:17:26,867 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:17:26,868 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:17:27,198 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:17:27,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065524379] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:17:27,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:17:27,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 10 [2023-11-12 02:17:27,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031579048] [2023-11-12 02:17:27,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:17:27,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 02:17:27,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:27,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 02:17:27,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:17:27,202 INFO L87 Difference]: Start difference. First operand 1990 states and 3415 transitions. Second operand has 10 states, 10 states have (on average 15.6) internal successors, (156), 10 states have internal predecessors, (156), 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) [2023-11-12 02:17:27,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:27,360 INFO L93 Difference]: Finished difference Result 3052 states and 4809 transitions. [2023-11-12 02:17:27,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:17:27,361 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.6) internal successors, (156), 10 states have internal predecessors, (156), 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 59 [2023-11-12 02:17:27,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:17:27,367 INFO L225 Difference]: With dead ends: 3052 [2023-11-12 02:17:27,367 INFO L226 Difference]: Without dead ends: 2600 [2023-11-12 02:17:27,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:17:27,370 INFO L413 NwaCegarLoop]: 1517 mSDtfsCounter, 1523 mSDsluCounter, 4613 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1523 SdHoareTripleChecker+Valid, 6130 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:17:27,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1523 Valid, 6130 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:17:27,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2600 states. [2023-11-12 02:17:27,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2600 to 2545. [2023-11-12 02:17:27,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2545 states, 2543 states have (on average 1.610696028313016) internal successors, (4096), 2544 states have internal predecessors, (4096), 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) [2023-11-12 02:17:27,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2545 states to 2545 states and 4096 transitions. [2023-11-12 02:17:27,459 INFO L78 Accepts]: Start accepts. Automaton has 2545 states and 4096 transitions. Word has length 59 [2023-11-12 02:17:27,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:17:27,459 INFO L495 AbstractCegarLoop]: Abstraction has 2545 states and 4096 transitions. [2023-11-12 02:17:27,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.6) internal successors, (156), 10 states have internal predecessors, (156), 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) [2023-11-12 02:17:27,460 INFO L276 IsEmpty]: Start isEmpty. Operand 2545 states and 4096 transitions. [2023-11-12 02:17:27,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-12 02:17:27,461 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:17:27,461 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-12 02:17:27,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec235c8-0999-46cb-b935-5e0e92607a9a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:17:27,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec235c8-0999-46cb-b935-5e0e92607a9a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-12 02:17:27,668 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:17:27,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:27,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1651307681, now seen corresponding path program 1 times [2023-11-12 02:17:27,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:27,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510020877] [2023-11-12 02:17:27,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:27,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:27,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:28,384 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:28,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:28,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510020877] [2023-11-12 02:17:28,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510020877] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:17:28,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023402193] [2023-11-12 02:17:28,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:28,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:17:28,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec235c8-0999-46cb-b935-5e0e92607a9a/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:28,387 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec235c8-0999-46cb-b935-5e0e92607a9a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:17:28,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec235c8-0999-46cb-b935-5e0e92607a9a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:17:28,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:28,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-12 02:17:28,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:17:29,109 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:29,110 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:17:30,736 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:30,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023402193] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:17:30,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:17:30,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 27 [2023-11-12 02:17:30,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258290636] [2023-11-12 02:17:30,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:17:30,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-12 02:17:30,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:30,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-12 02:17:30,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2023-11-12 02:17:30,739 INFO L87 Difference]: Start difference. First operand 2545 states and 4096 transitions. Second operand has 27 states, 27 states have (on average 5.555555555555555) internal successors, (150), 27 states have internal predecessors, (150), 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) [2023-11-12 02:17:31,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:31,693 INFO L93 Difference]: Finished difference Result 4485 states and 6526 transitions. [2023-11-12 02:17:31,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-12 02:17:31,707 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.555555555555555) internal successors, (150), 27 states have internal predecessors, (150), 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 [2023-11-12 02:17:31,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:17:31,716 INFO L225 Difference]: With dead ends: 4485 [2023-11-12 02:17:31,716 INFO L226 Difference]: Without dead ends: 3558 [2023-11-12 02:17:31,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=310, Invalid=1172, Unknown=0, NotChecked=0, Total=1482 [2023-11-12 02:17:31,720 INFO L413 NwaCegarLoop]: 1491 mSDtfsCounter, 10312 mSDsluCounter, 4748 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10312 SdHoareTripleChecker+Valid, 6239 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:17:31,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10312 Valid, 6239 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 02:17:31,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3558 states. [2023-11-12 02:17:31,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3558 to 3428. [2023-11-12 02:17:31,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3428 states, 3426 states have (on average 1.5166374781085814) internal successors, (5196), 3427 states have internal predecessors, (5196), 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) [2023-11-12 02:17:31,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3428 states to 3428 states and 5196 transitions. [2023-11-12 02:17:31,964 INFO L78 Accepts]: Start accepts. Automaton has 3428 states and 5196 transitions. Word has length 60 [2023-11-12 02:17:31,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:17:31,964 INFO L495 AbstractCegarLoop]: Abstraction has 3428 states and 5196 transitions. [2023-11-12 02:17:31,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.555555555555555) internal successors, (150), 27 states have internal predecessors, (150), 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) [2023-11-12 02:17:31,965 INFO L276 IsEmpty]: Start isEmpty. Operand 3428 states and 5196 transitions. [2023-11-12 02:17:31,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-12 02:17:31,966 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:17:31,966 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-12 02:17:31,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec235c8-0999-46cb-b935-5e0e92607a9a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:17:32,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec235c8-0999-46cb-b935-5e0e92607a9a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-12 02:17:32,173 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:17:32,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:32,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1417299731, now seen corresponding path program 1 times [2023-11-12 02:17:32,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:32,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722055279] [2023-11-12 02:17:32,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:32,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:32,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:32,592 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:32,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:32,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722055279] [2023-11-12 02:17:32,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722055279] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:17:32,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375734715] [2023-11-12 02:17:32,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:32,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:17:32,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec235c8-0999-46cb-b935-5e0e92607a9a/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:32,595 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec235c8-0999-46cb-b935-5e0e92607a9a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:17:32,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec235c8-0999-46cb-b935-5e0e92607a9a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:17:32,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:32,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-12 02:17:32,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:17:33,482 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:33,482 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:17:34,820 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:34,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375734715] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:17:34,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:17:34,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2023-11-12 02:17:34,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137156631] [2023-11-12 02:17:34,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:17:34,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-12 02:17:34,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:34,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-12 02:17:34,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2023-11-12 02:17:34,826 INFO L87 Difference]: Start difference. First operand 3428 states and 5196 transitions. Second operand has 29 states, 29 states have (on average 5.172413793103448) internal successors, (150), 29 states have internal predecessors, (150), 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) [2023-11-12 02:17:36,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:36,138 INFO L93 Difference]: Finished difference Result 7172 states and 9919 transitions. [2023-11-12 02:17:36,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-12 02:17:36,139 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.172413793103448) internal successors, (150), 29 states have internal predecessors, (150), 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 [2023-11-12 02:17:36,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:17:36,151 INFO L225 Difference]: With dead ends: 7172 [2023-11-12 02:17:36,152 INFO L226 Difference]: Without dead ends: 5510 [2023-11-12 02:17:36,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=476, Invalid=1504, Unknown=0, NotChecked=0, Total=1980 [2023-11-12 02:17:36,157 INFO L413 NwaCegarLoop]: 1499 mSDtfsCounter, 9150 mSDsluCounter, 6237 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9150 SdHoareTripleChecker+Valid, 7736 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:17:36,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9150 Valid, 7736 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 02:17:36,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5510 states. [2023-11-12 02:17:36,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5510 to 5254. [2023-11-12 02:17:36,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5254 states, 5252 states have (on average 1.416031987814166) internal successors, (7437), 5253 states have internal predecessors, (7437), 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) [2023-11-12 02:17:36,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5254 states to 5254 states and 7437 transitions. [2023-11-12 02:17:36,397 INFO L78 Accepts]: Start accepts. Automaton has 5254 states and 7437 transitions. Word has length 60 [2023-11-12 02:17:36,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:17:36,398 INFO L495 AbstractCegarLoop]: Abstraction has 5254 states and 7437 transitions. [2023-11-12 02:17:36,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.172413793103448) internal successors, (150), 29 states have internal predecessors, (150), 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) [2023-11-12 02:17:36,398 INFO L276 IsEmpty]: Start isEmpty. Operand 5254 states and 7437 transitions. [2023-11-12 02:17:36,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-12 02:17:36,399 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:17:36,400 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-12 02:17:36,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec235c8-0999-46cb-b935-5e0e92607a9a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:17:36,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec235c8-0999-46cb-b935-5e0e92607a9a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:17:36,606 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:17:36,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:36,607 INFO L85 PathProgramCache]: Analyzing trace with hash 858338323, now seen corresponding path program 1 times [2023-11-12 02:17:36,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:36,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001531271] [2023-11-12 02:17:36,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:36,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:36,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:37,039 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:37,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:37,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001531271] [2023-11-12 02:17:37,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001531271] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:17:37,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299294742] [2023-11-12 02:17:37,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:37,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:17:37,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec235c8-0999-46cb-b935-5e0e92607a9a/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:37,042 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec235c8-0999-46cb-b935-5e0e92607a9a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:17:37,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec235c8-0999-46cb-b935-5e0e92607a9a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:17:37,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:37,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-12 02:17:37,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:17:38,052 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:38,052 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:17:39,147 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:39,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299294742] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:17:39,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:17:39,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-11-12 02:17:39,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853695260] [2023-11-12 02:17:39,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:17:39,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-12 02:17:39,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:39,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-12 02:17:39,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2023-11-12 02:17:39,151 INFO L87 Difference]: Start difference. First operand 5254 states and 7437 transitions. Second operand has 28 states, 28 states have (on average 5.714285714285714) internal successors, (160), 28 states have internal predecessors, (160), 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) [2023-11-12 02:17:40,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:40,337 INFO L93 Difference]: Finished difference Result 12235 states and 16120 transitions. [2023-11-12 02:17:40,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-12 02:17:40,338 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.714285714285714) internal successors, (160), 28 states have internal predecessors, (160), 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 [2023-11-12 02:17:40,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:17:40,356 INFO L225 Difference]: With dead ends: 12235 [2023-11-12 02:17:40,356 INFO L226 Difference]: Without dead ends: 9277 [2023-11-12 02:17:40,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=443, Invalid=1363, Unknown=0, NotChecked=0, Total=1806 [2023-11-12 02:17:40,364 INFO L413 NwaCegarLoop]: 1490 mSDtfsCounter, 11989 mSDsluCounter, 9013 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11989 SdHoareTripleChecker+Valid, 10503 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:17:40,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11989 Valid, 10503 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-12 02:17:40,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9277 states. [2023-11-12 02:17:40,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9277 to 8757. [2023-11-12 02:17:40,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8757 states, 8755 states have (on average 1.332153055396916) internal successors, (11663), 8756 states have internal predecessors, (11663), 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) [2023-11-12 02:17:40,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8757 states to 8757 states and 11663 transitions. [2023-11-12 02:17:40,853 INFO L78 Accepts]: Start accepts. Automaton has 8757 states and 11663 transitions. Word has length 60 [2023-11-12 02:17:40,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:17:40,853 INFO L495 AbstractCegarLoop]: Abstraction has 8757 states and 11663 transitions. [2023-11-12 02:17:40,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.714285714285714) internal successors, (160), 28 states have internal predecessors, (160), 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) [2023-11-12 02:17:40,854 INFO L276 IsEmpty]: Start isEmpty. Operand 8757 states and 11663 transitions. [2023-11-12 02:17:40,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-12 02:17:40,855 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:17:40,855 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-12 02:17:40,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec235c8-0999-46cb-b935-5e0e92607a9a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:17:41,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec235c8-0999-46cb-b935-5e0e92607a9a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:17:41,063 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:17:41,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:41,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1824096789, now seen corresponding path program 1 times [2023-11-12 02:17:41,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:41,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989377732] [2023-11-12 02:17:41,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:41,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:41,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:42,051 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:42,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:42,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989377732] [2023-11-12 02:17:42,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989377732] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:17:42,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622256108] [2023-11-12 02:17:42,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:42,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:17:42,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec235c8-0999-46cb-b935-5e0e92607a9a/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:42,056 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec235c8-0999-46cb-b935-5e0e92607a9a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:17:42,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec235c8-0999-46cb-b935-5e0e92607a9a/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:17:42,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:42,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-12 02:17:42,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:17:45,491 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:45,491 INFO L327 TraceCheckSpWp]: Computing backward predicates...