./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87bca6cf-3a5d-4e21-a52c-531359503d6f/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87bca6cf-3a5d-4e21-a52c-531359503d6f/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87bca6cf-3a5d-4e21-a52c-531359503d6f/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87bca6cf-3a5d-4e21-a52c-531359503d6f/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87bca6cf-3a5d-4e21-a52c-531359503d6f/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87bca6cf-3a5d-4e21-a52c-531359503d6f/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 132c4c7f806b54f430f28cb3d47097ee784675c7b1df08a5c424914fbf614b6c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:00:00,309 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:00:00,449 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87bca6cf-3a5d-4e21-a52c-531359503d6f/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 08:00:00,463 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:00:00,463 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:00:00,489 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:00:00,490 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:00:00,491 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:00:00,491 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:00:00,492 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:00:00,493 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:00:00,494 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:00:00,495 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:00:00,495 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:00:00,496 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:00:00,497 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:00:00,497 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:00:00,498 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:00:00,499 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:00:00,499 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:00:00,500 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:00:00,500 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:00:00,501 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:00:00,502 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:00:00,502 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:00:00,503 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:00:00,503 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:00:00,504 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:00:00,504 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:00:00,505 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:00:00,505 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:00:00,506 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:00:00,506 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:00:00,507 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:00:00,507 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:00:00,508 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:00:00,508 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:00:00,509 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:00:00,509 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:00:00,510 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_87bca6cf-3a5d-4e21-a52c-531359503d6f/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87bca6cf-3a5d-4e21-a52c-531359503d6f/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 132c4c7f806b54f430f28cb3d47097ee784675c7b1df08a5c424914fbf614b6c [2023-11-19 08:00:00,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:00:00,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:00:00,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:00:00,906 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:00:00,907 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:00:00,908 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87bca6cf-3a5d-4e21-a52c-531359503d6f/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label05.c [2023-11-19 08:00:04,518 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:00:05,062 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:00:05,063 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87bca6cf-3a5d-4e21-a52c-531359503d6f/sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label05.c [2023-11-19 08:00:05,105 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87bca6cf-3a5d-4e21-a52c-531359503d6f/bin/uautomizer-verify-uCwYo4JHxu/data/62cd32deb/f5e96f173f6c4f998ee320b484531bf7/FLAGd6bd7524a [2023-11-19 08:00:05,125 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87bca6cf-3a5d-4e21-a52c-531359503d6f/bin/uautomizer-verify-uCwYo4JHxu/data/62cd32deb/f5e96f173f6c4f998ee320b484531bf7 [2023-11-19 08:00:05,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:00:05,135 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:00:05,137 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:00:05,137 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:00:05,143 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:00:05,144 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:05" (1/1) ... [2023-11-19 08:00:05,145 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7940bcb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:05, skipping insertion in model container [2023-11-19 08:00:05,146 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:05" (1/1) ... [2023-11-19 08:00:05,337 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:00:05,741 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_87bca6cf-3a5d-4e21-a52c-531359503d6f/sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label05.c[11677,11690] [2023-11-19 08:00:05,852 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_87bca6cf-3a5d-4e21-a52c-531359503d6f/sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label05.c[18613,18626] [2023-11-19 08:00:06,833 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:00:06,848 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:00:06,913 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_87bca6cf-3a5d-4e21-a52c-531359503d6f/sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label05.c[11677,11690] [2023-11-19 08:00:06,995 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_87bca6cf-3a5d-4e21-a52c-531359503d6f/sv-benchmarks/c/combinations/pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label05.c[18613,18626] [2023-11-19 08:00:07,661 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:00:07,697 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:00:07,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:07 WrapperNode [2023-11-19 08:00:07,698 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:00:07,700 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:00:07,700 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:00:07,700 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:00:07,709 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:07" (1/1) ... [2023-11-19 08:00:07,799 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:07" (1/1) ... [2023-11-19 08:00:08,198 INFO L138 Inliner]: procedures = 36, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5094 [2023-11-19 08:00:08,199 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:00:08,200 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:00:08,200 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:00:08,200 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:00:08,212 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:07" (1/1) ... [2023-11-19 08:00:08,217 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:07" (1/1) ... [2023-11-19 08:00:08,284 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:07" (1/1) ... [2023-11-19 08:00:08,285 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:07" (1/1) ... [2023-11-19 08:00:08,554 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:07" (1/1) ... [2023-11-19 08:00:08,606 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:07" (1/1) ... [2023-11-19 08:00:08,626 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:07" (1/1) ... [2023-11-19 08:00:08,648 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:07" (1/1) ... [2023-11-19 08:00:08,793 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:00:08,795 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:00:08,796 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:00:08,796 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:00:08,797 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:07" (1/1) ... [2023-11-19 08:00:08,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:00:08,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87bca6cf-3a5d-4e21-a52c-531359503d6f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:08,842 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87bca6cf-3a5d-4e21-a52c-531359503d6f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:00:08,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87bca6cf-3a5d-4e21-a52c-531359503d6f/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:00:08,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:00:08,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:00:08,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:00:08,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:00:09,056 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:00:09,059 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:00:14,623 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:00:14,651 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:00:14,651 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 08:00:14,668 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:14 BoogieIcfgContainer [2023-11-19 08:00:14,668 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:00:14,674 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:00:14,674 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:00:14,678 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:00:14,679 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:00:05" (1/3) ... [2023-11-19 08:00:14,680 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60190cd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:14, skipping insertion in model container [2023-11-19 08:00:14,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:07" (2/3) ... [2023-11-19 08:00:14,682 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60190cd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:14, skipping insertion in model container [2023-11-19 08:00:14,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:14" (3/3) ... [2023-11-19 08:00:14,685 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals+Problem12_label05.c [2023-11-19 08:00:14,708 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:00:14,709 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 08:00:14,815 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:00:14,825 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;@6d78c9fb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:00:14,826 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 08:00:14,838 INFO L276 IsEmpty]: Start isEmpty. Operand has 899 states, 896 states have (on average 1.9051339285714286) internal successors, (1707), 898 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:14,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-19 08:00:14,852 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:14,853 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] [2023-11-19 08:00:14,854 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:14,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:14,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1798739915, now seen corresponding path program 1 times [2023-11-19 08:00:14,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:14,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198005564] [2023-11-19 08:00:14,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:14,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:15,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:15,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:15,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:15,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198005564] [2023-11-19 08:00:15,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198005564] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:15,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:15,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:00:15,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284325014] [2023-11-19 08:00:15,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:15,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:00:15,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:15,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:00:15,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:00:15,283 INFO L87 Difference]: Start difference. First operand has 899 states, 896 states have (on average 1.9051339285714286) internal successors, (1707), 898 states have internal predecessors, (1707), 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 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:15,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:15,407 INFO L93 Difference]: Finished difference Result 1761 states and 3344 transitions. [2023-11-19 08:00:15,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:00:15,409 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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 24 [2023-11-19 08:00:15,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:15,438 INFO L225 Difference]: With dead ends: 1761 [2023-11-19 08:00:15,439 INFO L226 Difference]: Without dead ends: 833 [2023-11-19 08:00:15,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:00:15,458 INFO L413 NwaCegarLoop]: 1641 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, 1641 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:15,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1641 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:00:15,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2023-11-19 08:00:15,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 833. [2023-11-19 08:00:15,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 831 states have (on average 1.8941034897713598) internal successors, (1574), 832 states have internal predecessors, (1574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:15,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1574 transitions. [2023-11-19 08:00:15,559 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1574 transitions. Word has length 24 [2023-11-19 08:00:15,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:15,559 INFO L495 AbstractCegarLoop]: Abstraction has 833 states and 1574 transitions. [2023-11-19 08:00:15,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:15,560 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1574 transitions. [2023-11-19 08:00:15,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-19 08:00:15,561 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:15,562 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] [2023-11-19 08:00:15,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:00:15,562 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:15,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:15,563 INFO L85 PathProgramCache]: Analyzing trace with hash 502082675, now seen corresponding path program 1 times [2023-11-19 08:00:15,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:15,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692843242] [2023-11-19 08:00:15,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:15,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:15,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:15,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:15,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:15,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692843242] [2023-11-19 08:00:15,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692843242] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:15,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:15,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:00:15,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123889977] [2023-11-19 08:00:15,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:15,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:00:15,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:15,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:00:15,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:00:15,856 INFO L87 Difference]: Start difference. First operand 833 states and 1574 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:16,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:16,027 INFO L93 Difference]: Finished difference Result 879 states and 1645 transitions. [2023-11-19 08:00:16,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:00:16,028 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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 24 [2023-11-19 08:00:16,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:16,034 INFO L225 Difference]: With dead ends: 879 [2023-11-19 08:00:16,034 INFO L226 Difference]: Without dead ends: 833 [2023-11-19 08:00:16,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:00:16,037 INFO L413 NwaCegarLoop]: 1572 mSDtfsCounter, 2 mSDsluCounter, 4680 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6252 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:16,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6252 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:00:16,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2023-11-19 08:00:16,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 833. [2023-11-19 08:00:16,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 831 states have (on average 1.8567990373044525) internal successors, (1543), 832 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:16,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1543 transitions. [2023-11-19 08:00:16,078 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1543 transitions. Word has length 24 [2023-11-19 08:00:16,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:16,078 INFO L495 AbstractCegarLoop]: Abstraction has 833 states and 1543 transitions. [2023-11-19 08:00:16,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:16,079 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1543 transitions. [2023-11-19 08:00:16,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-19 08:00:16,087 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:16,088 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:16,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:00:16,089 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:16,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:16,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1518044022, now seen corresponding path program 1 times [2023-11-19 08:00:16,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:16,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6302985] [2023-11-19 08:00:16,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:16,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:16,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:16,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:16,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:16,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6302985] [2023-11-19 08:00:16,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6302985] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:16,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:16,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 08:00:16,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977946877] [2023-11-19 08:00:16,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:16,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:00:16,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:16,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:00:16,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:00:16,393 INFO L87 Difference]: Start difference. First operand 833 states and 1543 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:16,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:16,798 INFO L93 Difference]: Finished difference Result 1253 states and 2213 transitions. [2023-11-19 08:00:16,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 08:00:16,799 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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 [2023-11-19 08:00:16,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:16,810 INFO L225 Difference]: With dead ends: 1253 [2023-11-19 08:00:16,811 INFO L226 Difference]: Without dead ends: 1211 [2023-11-19 08:00:16,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-11-19 08:00:16,813 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 7953 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7953 SdHoareTripleChecker+Valid, 2746 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:16,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7953 Valid, 2746 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:00:16,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2023-11-19 08:00:16,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 873. [2023-11-19 08:00:16,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 871 states have (on average 1.8450057405281286) internal successors, (1607), 872 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:16,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1607 transitions. [2023-11-19 08:00:16,858 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1607 transitions. Word has length 54 [2023-11-19 08:00:16,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:16,859 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1607 transitions. [2023-11-19 08:00:16,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:16,860 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1607 transitions. [2023-11-19 08:00:16,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-19 08:00:16,862 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:16,862 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:16,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:00:16,868 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:16,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:16,868 INFO L85 PathProgramCache]: Analyzing trace with hash 32878714, now seen corresponding path program 1 times [2023-11-19 08:00:16,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:16,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347692665] [2023-11-19 08:00:16,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:16,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:17,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:17,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:17,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347692665] [2023-11-19 08:00:17,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347692665] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:17,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:17,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:00:17,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450629364] [2023-11-19 08:00:17,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:17,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:17,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:17,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:17,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:17,009 INFO L87 Difference]: Start difference. First operand 873 states and 1607 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) [2023-11-19 08:00:17,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:17,067 INFO L93 Difference]: Finished difference Result 1026 states and 1850 transitions. [2023-11-19 08:00:17,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:00:17,068 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 [2023-11-19 08:00:17,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:17,075 INFO L225 Difference]: With dead ends: 1026 [2023-11-19 08:00:17,076 INFO L226 Difference]: Without dead ends: 944 [2023-11-19 08:00:17,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:17,088 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 1482 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:17,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1603 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:00:17,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2023-11-19 08:00:17,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 942. [2023-11-19 08:00:17,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 940 states have (on average 1.824468085106383) internal successors, (1715), 941 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:17,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1715 transitions. [2023-11-19 08:00:17,133 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1715 transitions. Word has length 56 [2023-11-19 08:00:17,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:17,136 INFO L495 AbstractCegarLoop]: Abstraction has 942 states and 1715 transitions. [2023-11-19 08:00:17,136 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) [2023-11-19 08:00:17,136 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1715 transitions. [2023-11-19 08:00:17,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-19 08:00:17,139 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:17,139 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:17,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:00:17,140 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:17,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:17,141 INFO L85 PathProgramCache]: Analyzing trace with hash 99372226, now seen corresponding path program 1 times [2023-11-19 08:00:17,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:17,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765692252] [2023-11-19 08:00:17,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:17,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:17,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:17,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:17,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765692252] [2023-11-19 08:00:17,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765692252] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:17,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:17,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 08:00:17,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461402094] [2023-11-19 08:00:17,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:17,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:00:17,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:17,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:00:17,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:00:17,508 INFO L87 Difference]: Start difference. First operand 942 states and 1715 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 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) [2023-11-19 08:00:17,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:17,807 INFO L93 Difference]: Finished difference Result 1095 states and 1955 transitions. [2023-11-19 08:00:17,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:00:17,808 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 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 [2023-11-19 08:00:17,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:17,814 INFO L225 Difference]: With dead ends: 1095 [2023-11-19 08:00:17,814 INFO L226 Difference]: Without dead ends: 944 [2023-11-19 08:00:17,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-11-19 08:00:17,816 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 4479 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4479 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:17,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4479 Valid, 1789 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:00:17,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2023-11-19 08:00:17,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 942. [2023-11-19 08:00:17,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 940 states have (on average 1.8223404255319149) internal successors, (1713), 941 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:17,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1713 transitions. [2023-11-19 08:00:17,852 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1713 transitions. Word has length 56 [2023-11-19 08:00:17,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:17,853 INFO L495 AbstractCegarLoop]: Abstraction has 942 states and 1713 transitions. [2023-11-19 08:00:17,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 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) [2023-11-19 08:00:17,853 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1713 transitions. [2023-11-19 08:00:17,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-19 08:00:17,855 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:17,855 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:17,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:00:17,855 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:17,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:17,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1629151369, now seen corresponding path program 1 times [2023-11-19 08:00:17,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:17,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355432885] [2023-11-19 08:00:17,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:17,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:17,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:18,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:18,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:18,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355432885] [2023-11-19 08:00:18,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355432885] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:18,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:18,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 08:00:18,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121549264] [2023-11-19 08:00:18,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:18,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 08:00:18,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:18,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 08:00:18,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:00:18,281 INFO L87 Difference]: Start difference. First operand 942 states and 1713 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 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) [2023-11-19 08:00:18,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:18,477 INFO L93 Difference]: Finished difference Result 1061 states and 1902 transitions. [2023-11-19 08:00:18,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 08:00:18,478 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 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 [2023-11-19 08:00:18,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:18,485 INFO L225 Difference]: With dead ends: 1061 [2023-11-19 08:00:18,485 INFO L226 Difference]: Without dead ends: 1059 [2023-11-19 08:00:18,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-11-19 08:00:18,487 INFO L413 NwaCegarLoop]: 1588 mSDtfsCounter, 131 mSDsluCounter, 9348 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 10936 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:18,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 10936 Invalid, 45 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:00:18,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2023-11-19 08:00:18,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 948. [2023-11-19 08:00:18,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 946 states have (on average 1.8160676532769555) internal successors, (1718), 947 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:18,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1718 transitions. [2023-11-19 08:00:18,523 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1718 transitions. Word has length 57 [2023-11-19 08:00:18,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:18,524 INFO L495 AbstractCegarLoop]: Abstraction has 948 states and 1718 transitions. [2023-11-19 08:00:18,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 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) [2023-11-19 08:00:18,524 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1718 transitions. [2023-11-19 08:00:18,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-19 08:00:18,525 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:18,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:18,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 08:00:18,526 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:18,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:18,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1409361730, now seen corresponding path program 1 times [2023-11-19 08:00:18,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:18,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270462403] [2023-11-19 08:00:18,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:18,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:18,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:18,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:18,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270462403] [2023-11-19 08:00:18,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270462403] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:18,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:18,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:00:18,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915697190] [2023-11-19 08:00:18,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:18,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:18,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:18,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:18,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:18,610 INFO L87 Difference]: Start difference. First operand 948 states and 1718 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:18,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:18,645 INFO L93 Difference]: Finished difference Result 1118 states and 1979 transitions. [2023-11-19 08:00:18,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:00:18,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 58 [2023-11-19 08:00:18,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:18,653 INFO L225 Difference]: With dead ends: 1118 [2023-11-19 08:00:18,653 INFO L226 Difference]: Without dead ends: 1030 [2023-11-19 08:00:18,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:18,655 INFO L413 NwaCegarLoop]: 1595 mSDtfsCounter, 1496 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:18,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1663 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:00:18,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2023-11-19 08:00:18,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 1028. [2023-11-19 08:00:18,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 1026 states have (on average 1.7923976608187135) internal successors, (1839), 1027 states have internal predecessors, (1839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:18,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1839 transitions. [2023-11-19 08:00:18,692 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1839 transitions. Word has length 58 [2023-11-19 08:00:18,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:18,692 INFO L495 AbstractCegarLoop]: Abstraction has 1028 states and 1839 transitions. [2023-11-19 08:00:18,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:18,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1839 transitions. [2023-11-19 08:00:18,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-19 08:00:18,693 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:18,693 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:18,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 08:00:18,694 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:18,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:18,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1383487166, now seen corresponding path program 1 times [2023-11-19 08:00:18,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:18,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475833735] [2023-11-19 08:00:18,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:18,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:18,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:18,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:18,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475833735] [2023-11-19 08:00:18,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475833735] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:18,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:18,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:00:18,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768993849] [2023-11-19 08:00:18,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:18,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:18,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:18,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:18,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:18,754 INFO L87 Difference]: Start difference. First operand 1028 states and 1839 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:18,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:18,794 INFO L93 Difference]: Finished difference Result 1474 states and 2519 transitions. [2023-11-19 08:00:18,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:00:18,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 58 [2023-11-19 08:00:18,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:18,803 INFO L225 Difference]: With dead ends: 1474 [2023-11-19 08:00:18,803 INFO L226 Difference]: Without dead ends: 1239 [2023-11-19 08:00:18,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:18,805 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 1492 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:18,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 1663 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:00:18,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2023-11-19 08:00:18,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1237. [2023-11-19 08:00:18,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1237 states, 1235 states have (on average 1.7417004048582996) internal successors, (2151), 1236 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:18,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 2151 transitions. [2023-11-19 08:00:18,849 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 2151 transitions. Word has length 58 [2023-11-19 08:00:18,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:18,849 INFO L495 AbstractCegarLoop]: Abstraction has 1237 states and 2151 transitions. [2023-11-19 08:00:18,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:18,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 2151 transitions. [2023-11-19 08:00:18,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-19 08:00:18,850 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:18,851 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:18,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 08:00:18,851 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:18,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:18,852 INFO L85 PathProgramCache]: Analyzing trace with hash 696011330, now seen corresponding path program 1 times [2023-11-19 08:00:18,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:18,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689645402] [2023-11-19 08:00:18,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:18,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:18,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:18,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:18,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:18,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689645402] [2023-11-19 08:00:18,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689645402] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:18,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:18,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:00:18,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875222607] [2023-11-19 08:00:18,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:18,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:18,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:18,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:18,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:18,915 INFO L87 Difference]: Start difference. First operand 1237 states and 2151 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:18,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:18,970 INFO L93 Difference]: Finished difference Result 2077 states and 3413 transitions. [2023-11-19 08:00:18,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:00:18,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 58 [2023-11-19 08:00:18,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:18,983 INFO L225 Difference]: With dead ends: 2077 [2023-11-19 08:00:18,983 INFO L226 Difference]: Without dead ends: 1633 [2023-11-19 08:00:18,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:18,985 INFO L413 NwaCegarLoop]: 1585 mSDtfsCounter, 1490 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1665 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:18,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1665 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:00:18,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2023-11-19 08:00:19,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1631. [2023-11-19 08:00:19,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1629 states have (on average 1.6740331491712708) internal successors, (2727), 1630 states have internal predecessors, (2727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:19,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2727 transitions. [2023-11-19 08:00:19,105 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2727 transitions. Word has length 58 [2023-11-19 08:00:19,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:19,105 INFO L495 AbstractCegarLoop]: Abstraction has 1631 states and 2727 transitions. [2023-11-19 08:00:19,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:19,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2727 transitions. [2023-11-19 08:00:19,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-19 08:00:19,106 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:19,106 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:19,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 08:00:19,107 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:19,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:19,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1818023102, now seen corresponding path program 1 times [2023-11-19 08:00:19,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:19,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095519196] [2023-11-19 08:00:19,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:19,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:19,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:19,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:19,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:19,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095519196] [2023-11-19 08:00:19,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095519196] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:19,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:19,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:00:19,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667065369] [2023-11-19 08:00:19,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:19,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:19,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:19,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:19,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:19,177 INFO L87 Difference]: Start difference. First operand 1631 states and 2727 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:19,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:19,251 INFO L93 Difference]: Finished difference Result 3211 states and 5057 transitions. [2023-11-19 08:00:19,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:00:19,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 58 [2023-11-19 08:00:19,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:19,265 INFO L225 Difference]: With dead ends: 3211 [2023-11-19 08:00:19,266 INFO L226 Difference]: Without dead ends: 2373 [2023-11-19 08:00:19,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:19,268 INFO L413 NwaCegarLoop]: 1583 mSDtfsCounter, 1488 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1667 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:19,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1667 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:00:19,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2023-11-19 08:00:19,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 2371. [2023-11-19 08:00:19,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2371 states, 2369 states have (on average 1.5968763191219923) internal successors, (3783), 2370 states have internal predecessors, (3783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:19,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2371 states to 2371 states and 3783 transitions. [2023-11-19 08:00:19,355 INFO L78 Accepts]: Start accepts. Automaton has 2371 states and 3783 transitions. Word has length 58 [2023-11-19 08:00:19,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:19,355 INFO L495 AbstractCegarLoop]: Abstraction has 2371 states and 3783 transitions. [2023-11-19 08:00:19,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:19,356 INFO L276 IsEmpty]: Start isEmpty. Operand 2371 states and 3783 transitions. [2023-11-19 08:00:19,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-19 08:00:19,356 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:19,357 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:19,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 08:00:19,357 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:19,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:19,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1673218114, now seen corresponding path program 1 times [2023-11-19 08:00:19,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:19,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693657239] [2023-11-19 08:00:19,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:19,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:19,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:19,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:19,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:19,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693657239] [2023-11-19 08:00:19,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693657239] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:19,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:19,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:00:19,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757365735] [2023-11-19 08:00:19,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:19,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:19,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:19,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:19,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:19,414 INFO L87 Difference]: Start difference. First operand 2371 states and 3783 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:19,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:19,530 INFO L93 Difference]: Finished difference Result 5335 states and 8057 transitions. [2023-11-19 08:00:19,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:00:19,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 58 [2023-11-19 08:00:19,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:19,552 INFO L225 Difference]: With dead ends: 5335 [2023-11-19 08:00:19,552 INFO L226 Difference]: Without dead ends: 3757 [2023-11-19 08:00:19,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:19,555 INFO L413 NwaCegarLoop]: 1597 mSDtfsCounter, 1494 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:19,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1669 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:00:19,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3757 states. [2023-11-19 08:00:19,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3757 to 3755. [2023-11-19 08:00:19,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3755 states, 3753 states have (on average 1.5195843325339728) internal successors, (5703), 3754 states have internal predecessors, (5703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:19,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3755 states to 3755 states and 5703 transitions. [2023-11-19 08:00:19,704 INFO L78 Accepts]: Start accepts. Automaton has 3755 states and 5703 transitions. Word has length 58 [2023-11-19 08:00:19,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:19,704 INFO L495 AbstractCegarLoop]: Abstraction has 3755 states and 5703 transitions. [2023-11-19 08:00:19,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:19,704 INFO L276 IsEmpty]: Start isEmpty. Operand 3755 states and 5703 transitions. [2023-11-19 08:00:19,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-19 08:00:19,705 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:19,705 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:19,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 08:00:19,706 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:19,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:19,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1032724869, now seen corresponding path program 1 times [2023-11-19 08:00:19,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:19,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099822788] [2023-11-19 08:00:19,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:19,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:19,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:19,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:19,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:19,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099822788] [2023-11-19 08:00:19,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099822788] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:19,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:19,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:00:19,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561564974] [2023-11-19 08:00:19,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:19,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:00:19,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:19,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:00:19,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:00:19,873 INFO L87 Difference]: Start difference. First operand 3755 states and 5703 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:28,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:28,121 INFO L93 Difference]: Finished difference Result 6010 states and 10012 transitions. [2023-11-19 08:00:28,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:00:28,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-11-19 08:00:28,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:28,152 INFO L225 Difference]: With dead ends: 6010 [2023-11-19 08:00:28,152 INFO L226 Difference]: Without dead ends: 5257 [2023-11-19 08:00:28,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:00:28,155 INFO L413 NwaCegarLoop]: 797 mSDtfsCounter, 2407 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5154 mSolverCounterSat, 1245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2407 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 6399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1245 IncrementalHoareTripleChecker+Valid, 5154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:28,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2407 Valid, 815 Invalid, 6399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1245 Valid, 5154 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-11-19 08:00:28,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5257 states. [2023-11-19 08:00:28,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5257 to 5257. [2023-11-19 08:00:28,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5257 states, 5255 states have (on average 1.4612749762131303) internal successors, (7679), 5256 states have internal predecessors, (7679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:28,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5257 states to 5257 states and 7679 transitions. [2023-11-19 08:00:28,412 INFO L78 Accepts]: Start accepts. Automaton has 5257 states and 7679 transitions. Word has length 60 [2023-11-19 08:00:28,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:28,412 INFO L495 AbstractCegarLoop]: Abstraction has 5257 states and 7679 transitions. [2023-11-19 08:00:28,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:28,413 INFO L276 IsEmpty]: Start isEmpty. Operand 5257 states and 7679 transitions. [2023-11-19 08:00:28,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-19 08:00:28,415 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:28,416 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:28,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 08:00:28,417 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:28,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:28,417 INFO L85 PathProgramCache]: Analyzing trace with hash 273219202, now seen corresponding path program 1 times [2023-11-19 08:00:28,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:28,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263881380] [2023-11-19 08:00:28,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:28,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:28,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:28,673 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:00:28,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:28,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263881380] [2023-11-19 08:00:28,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263881380] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:28,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:28,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 08:00:28,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146859296] [2023-11-19 08:00:28,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:28,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:00:28,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:28,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:00:28,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:00:28,677 INFO L87 Difference]: Start difference. First operand 5257 states and 7679 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:29,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:29,324 INFO L93 Difference]: Finished difference Result 19861 states and 28485 transitions. [2023-11-19 08:00:29,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:00:29,324 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 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 77 [2023-11-19 08:00:29,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:29,399 INFO L225 Difference]: With dead ends: 19861 [2023-11-19 08:00:29,399 INFO L226 Difference]: Without dead ends: 17747 [2023-11-19 08:00:29,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-19 08:00:29,409 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 6307 mSDsluCounter, 1964 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6307 SdHoareTripleChecker+Valid, 3568 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:29,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6307 Valid, 3568 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:00:29,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17747 states. [2023-11-19 08:00:29,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17747 to 7801. [2023-11-19 08:00:29,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7801 states, 7799 states have (on average 1.4441595076291833) internal successors, (11263), 7800 states have internal predecessors, (11263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:29,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7801 states to 7801 states and 11263 transitions. [2023-11-19 08:00:29,996 INFO L78 Accepts]: Start accepts. Automaton has 7801 states and 11263 transitions. Word has length 77 [2023-11-19 08:00:29,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:29,997 INFO L495 AbstractCegarLoop]: Abstraction has 7801 states and 11263 transitions. [2023-11-19 08:00:29,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:29,998 INFO L276 IsEmpty]: Start isEmpty. Operand 7801 states and 11263 transitions. [2023-11-19 08:00:30,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-19 08:00:30,003 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:30,003 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:30,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 08:00:30,004 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:30,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:30,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1775337602, now seen corresponding path program 1 times [2023-11-19 08:00:30,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:30,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524419823] [2023-11-19 08:00:30,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:30,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:30,247 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 08:00:30,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:30,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524419823] [2023-11-19 08:00:30,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524419823] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:30,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:30,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 08:00:30,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460607501] [2023-11-19 08:00:30,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:30,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:00:30,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:30,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:00:30,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:00:30,251 INFO L87 Difference]: Start difference. First operand 7801 states and 11263 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:31,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:31,205 INFO L93 Difference]: Finished difference Result 22821 states and 32677 transitions. [2023-11-19 08:00:31,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:00:31,209 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 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 77 [2023-11-19 08:00:31,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:31,249 INFO L225 Difference]: With dead ends: 22821 [2023-11-19 08:00:31,249 INFO L226 Difference]: Without dead ends: 19859 [2023-11-19 08:00:31,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-19 08:00:31,258 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 6353 mSDsluCounter, 1993 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6353 SdHoareTripleChecker+Valid, 3597 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:31,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6353 Valid, 3597 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:00:31,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19859 states. [2023-11-19 08:00:31,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19859 to 11817. [2023-11-19 08:00:31,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11817 states, 11815 states have (on average 1.4313161235717309) internal successors, (16911), 11816 states have internal predecessors, (16911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:31,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11817 states to 11817 states and 16911 transitions. [2023-11-19 08:00:31,935 INFO L78 Accepts]: Start accepts. Automaton has 11817 states and 16911 transitions. Word has length 77 [2023-11-19 08:00:31,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:31,935 INFO L495 AbstractCegarLoop]: Abstraction has 11817 states and 16911 transitions. [2023-11-19 08:00:31,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:31,936 INFO L276 IsEmpty]: Start isEmpty. Operand 11817 states and 16911 transitions. [2023-11-19 08:00:31,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-19 08:00:31,939 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:31,939 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:31,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 08:00:31,940 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:31,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:31,940 INFO L85 PathProgramCache]: Analyzing trace with hash -440131198, now seen corresponding path program 1 times [2023-11-19 08:00:31,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:31,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734082803] [2023-11-19 08:00:31,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:31,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:31,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:32,149 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 08:00:32,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:32,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734082803] [2023-11-19 08:00:32,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734082803] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:32,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:32,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 08:00:32,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561187840] [2023-11-19 08:00:32,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:32,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:00:32,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:32,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:00:32,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:00:32,152 INFO L87 Difference]: Start difference. First operand 11817 states and 16911 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:32,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:32,894 INFO L93 Difference]: Finished difference Result 25781 states and 36853 transitions. [2023-11-19 08:00:32,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:00:32,895 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 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 77 [2023-11-19 08:00:32,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:32,953 INFO L225 Difference]: With dead ends: 25781 [2023-11-19 08:00:32,953 INFO L226 Difference]: Without dead ends: 22819 [2023-11-19 08:00:32,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-19 08:00:32,967 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 6399 mSDsluCounter, 1960 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6399 SdHoareTripleChecker+Valid, 3562 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:32,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6399 Valid, 3562 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:00:32,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22819 states. [2023-11-19 08:00:33,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22819 to 14777. [2023-11-19 08:00:33,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14777 states, 14775 states have (on average 1.427208121827411) internal successors, (21087), 14776 states have internal predecessors, (21087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:33,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14777 states to 14777 states and 21087 transitions. [2023-11-19 08:00:33,771 INFO L78 Accepts]: Start accepts. Automaton has 14777 states and 21087 transitions. Word has length 77 [2023-11-19 08:00:33,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:33,772 INFO L495 AbstractCegarLoop]: Abstraction has 14777 states and 21087 transitions. [2023-11-19 08:00:33,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:33,772 INFO L276 IsEmpty]: Start isEmpty. Operand 14777 states and 21087 transitions. [2023-11-19 08:00:33,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-19 08:00:33,776 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:33,776 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:33,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 08:00:33,777 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:33,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:33,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1340801666, now seen corresponding path program 1 times [2023-11-19 08:00:33,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:33,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014263002] [2023-11-19 08:00:33,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:33,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:33,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:33,996 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 08:00:33,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:33,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014263002] [2023-11-19 08:00:33,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014263002] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:34,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:34,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 08:00:34,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467647941] [2023-11-19 08:00:34,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:34,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:00:34,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:34,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:00:34,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:00:34,002 INFO L87 Difference]: Start difference. First operand 14777 states and 21087 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:34,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:34,826 INFO L93 Difference]: Finished difference Result 28741 states and 41029 transitions. [2023-11-19 08:00:34,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:00:34,826 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-11-19 08:00:34,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:34,878 INFO L225 Difference]: With dead ends: 28741 [2023-11-19 08:00:34,878 INFO L226 Difference]: Without dead ends: 25779 [2023-11-19 08:00:34,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-19 08:00:34,890 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 6355 mSDsluCounter, 2002 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6355 SdHoareTripleChecker+Valid, 3604 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:34,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6355 Valid, 3604 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:00:34,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25779 states. [2023-11-19 08:00:35,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25779 to 17737. [2023-11-19 08:00:35,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17737 states, 17735 states have (on average 1.4244713842683958) internal successors, (25263), 17736 states have internal predecessors, (25263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:35,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17737 states to 17737 states and 25263 transitions. [2023-11-19 08:00:35,752 INFO L78 Accepts]: Start accepts. Automaton has 17737 states and 25263 transitions. Word has length 77 [2023-11-19 08:00:35,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:35,752 INFO L495 AbstractCegarLoop]: Abstraction has 17737 states and 25263 transitions. [2023-11-19 08:00:35,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:35,753 INFO L276 IsEmpty]: Start isEmpty. Operand 17737 states and 25263 transitions. [2023-11-19 08:00:35,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-19 08:00:35,757 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:35,757 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:35,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 08:00:35,758 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:35,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:35,759 INFO L85 PathProgramCache]: Analyzing trace with hash 537075586, now seen corresponding path program 1 times [2023-11-19 08:00:35,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:35,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752807865] [2023-11-19 08:00:35,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:35,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:35,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:35,958 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 08:00:35,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:35,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752807865] [2023-11-19 08:00:35,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752807865] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:35,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:35,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 08:00:35,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196842421] [2023-11-19 08:00:35,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:35,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:00:35,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:35,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:00:35,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:00:35,962 INFO L87 Difference]: Start difference. First operand 17737 states and 25263 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:37,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:37,229 INFO L93 Difference]: Finished difference Result 31701 states and 45205 transitions. [2023-11-19 08:00:37,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:00:37,230 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 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 77 [2023-11-19 08:00:37,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:37,285 INFO L225 Difference]: With dead ends: 31701 [2023-11-19 08:00:37,285 INFO L226 Difference]: Without dead ends: 28739 [2023-11-19 08:00:37,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-19 08:00:37,296 INFO L413 NwaCegarLoop]: 1601 mSDtfsCounter, 6307 mSDsluCounter, 2097 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6307 SdHoareTripleChecker+Valid, 3698 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:37,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6307 Valid, 3698 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:00:37,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28739 states. [2023-11-19 08:00:38,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28739 to 20697. [2023-11-19 08:00:38,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20697 states, 20695 states have (on average 1.422517516308287) internal successors, (29439), 20696 states have internal predecessors, (29439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:38,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20697 states to 20697 states and 29439 transitions. [2023-11-19 08:00:38,301 INFO L78 Accepts]: Start accepts. Automaton has 20697 states and 29439 transitions. Word has length 77 [2023-11-19 08:00:38,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:38,302 INFO L495 AbstractCegarLoop]: Abstraction has 20697 states and 29439 transitions. [2023-11-19 08:00:38,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:38,302 INFO L276 IsEmpty]: Start isEmpty. Operand 20697 states and 29439 transitions. [2023-11-19 08:00:38,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-19 08:00:38,306 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:38,307 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:38,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-19 08:00:38,307 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:38,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:38,308 INFO L85 PathProgramCache]: Analyzing trace with hash 895246760, now seen corresponding path program 1 times [2023-11-19 08:00:38,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:38,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805300526] [2023-11-19 08:00:38,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:38,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:38,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:38,461 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:38,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:38,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805300526] [2023-11-19 08:00:38,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805300526] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:38,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:38,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:00:38,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330231966] [2023-11-19 08:00:38,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:38,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:38,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:38,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:38,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:38,464 INFO L87 Difference]: Start difference. First operand 20697 states and 29439 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:39,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:39,185 INFO L93 Difference]: Finished difference Result 39101 states and 55425 transitions. [2023-11-19 08:00:39,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:00:39,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2023-11-19 08:00:39,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:39,217 INFO L225 Difference]: With dead ends: 39101 [2023-11-19 08:00:39,218 INFO L226 Difference]: Without dead ends: 20699 [2023-11-19 08:00:39,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:39,238 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 45 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3108 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 [2023-11-19 08:00:39,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3108 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:00:39,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20699 states. [2023-11-19 08:00:40,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20699 to 20697. [2023-11-19 08:00:40,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20697 states, 20695 states have (on average 1.4082145445759846) internal successors, (29143), 20696 states have internal predecessors, (29143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:40,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20697 states to 20697 states and 29143 transitions. [2023-11-19 08:00:40,112 INFO L78 Accepts]: Start accepts. Automaton has 20697 states and 29143 transitions. Word has length 78 [2023-11-19 08:00:40,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:40,112 INFO L495 AbstractCegarLoop]: Abstraction has 20697 states and 29143 transitions. [2023-11-19 08:00:40,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:40,113 INFO L276 IsEmpty]: Start isEmpty. Operand 20697 states and 29143 transitions. [2023-11-19 08:00:40,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-19 08:00:40,116 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:40,116 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:40,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-19 08:00:40,117 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:40,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:40,117 INFO L85 PathProgramCache]: Analyzing trace with hash -615640646, now seen corresponding path program 1 times [2023-11-19 08:00:40,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:40,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778945927] [2023-11-19 08:00:40,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:40,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:40,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:40,244 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:40,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:40,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778945927] [2023-11-19 08:00:40,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778945927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:40,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:40,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:00:40,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144810539] [2023-11-19 08:00:40,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:40,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:40,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:40,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:40,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:40,249 INFO L87 Difference]: Start difference. First operand 20697 states and 29143 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:40,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:40,585 INFO L93 Difference]: Finished difference Result 27584 states and 38837 transitions. [2023-11-19 08:00:40,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:00:40,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2023-11-19 08:00:40,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:40,599 INFO L225 Difference]: With dead ends: 27584 [2023-11-19 08:00:40,600 INFO L226 Difference]: Without dead ends: 9182 [2023-11-19 08:00:40,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:40,616 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 39 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3105 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 [2023-11-19 08:00:40,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3105 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:00:40,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9182 states. [2023-11-19 08:00:41,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9182 to 9174. [2023-11-19 08:00:41,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9174 states, 9172 states have (on average 1.4212821631051025) internal successors, (13036), 9173 states have internal predecessors, (13036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:41,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9174 states to 9174 states and 13036 transitions. [2023-11-19 08:00:41,083 INFO L78 Accepts]: Start accepts. Automaton has 9174 states and 13036 transitions. Word has length 79 [2023-11-19 08:00:41,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:41,084 INFO L495 AbstractCegarLoop]: Abstraction has 9174 states and 13036 transitions. [2023-11-19 08:00:41,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:41,084 INFO L276 IsEmpty]: Start isEmpty. Operand 9174 states and 13036 transitions. [2023-11-19 08:00:41,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-19 08:00:41,086 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:41,087 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:41,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-19 08:00:41,087 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:41,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:41,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1683802150, now seen corresponding path program 1 times [2023-11-19 08:00:41,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:41,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895621423] [2023-11-19 08:00:41,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:41,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:41,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:41,237 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:41,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:41,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895621423] [2023-11-19 08:00:41,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895621423] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:41,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:41,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:00:41,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186779187] [2023-11-19 08:00:41,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:41,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:41,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:41,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:41,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:41,242 INFO L87 Difference]: Start difference. First operand 9174 states and 13036 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:41,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:41,390 INFO L93 Difference]: Finished difference Result 12610 states and 17822 transitions. [2023-11-19 08:00:41,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:00:41,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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 80 [2023-11-19 08:00:41,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:41,396 INFO L225 Difference]: With dead ends: 12610 [2023-11-19 08:00:41,397 INFO L226 Difference]: Without dead ends: 5744 [2023-11-19 08:00:41,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:41,404 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 41 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3084 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 [2023-11-19 08:00:41,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3084 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:00:41,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5744 states. [2023-11-19 08:00:41,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5744 to 5742. [2023-11-19 08:00:41,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5742 states, 5740 states have (on average 1.4285714285714286) internal successors, (8200), 5741 states have internal predecessors, (8200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:41,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5742 states to 5742 states and 8200 transitions. [2023-11-19 08:00:41,549 INFO L78 Accepts]: Start accepts. Automaton has 5742 states and 8200 transitions. Word has length 80 [2023-11-19 08:00:41,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:41,549 INFO L495 AbstractCegarLoop]: Abstraction has 5742 states and 8200 transitions. [2023-11-19 08:00:41,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:41,549 INFO L276 IsEmpty]: Start isEmpty. Operand 5742 states and 8200 transitions. [2023-11-19 08:00:41,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-19 08:00:41,550 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:41,551 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:41,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-19 08:00:41,551 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:41,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:41,552 INFO L85 PathProgramCache]: Analyzing trace with hash 263472268, now seen corresponding path program 1 times [2023-11-19 08:00:41,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:41,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134121111] [2023-11-19 08:00:41,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:41,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:41,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:41,661 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:41,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:41,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134121111] [2023-11-19 08:00:41,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134121111] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:41,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:41,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:00:41,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491859580] [2023-11-19 08:00:41,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:41,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:41,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:41,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:41,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:41,664 INFO L87 Difference]: Start difference. First operand 5742 states and 8200 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:41,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:41,761 INFO L93 Difference]: Finished difference Result 7462 states and 10568 transitions. [2023-11-19 08:00:41,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:00:41,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 82 [2023-11-19 08:00:41,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:41,766 INFO L225 Difference]: With dead ends: 7462 [2023-11-19 08:00:41,767 INFO L226 Difference]: Without dead ends: 4028 [2023-11-19 08:00:41,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:41,771 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 38 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 3069 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 [2023-11-19 08:00:41,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 3069 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:00:41,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4028 states. [2023-11-19 08:00:41,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4028 to 4026. [2023-11-19 08:00:41,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4026 states, 4024 states have (on average 1.4433399602385686) internal successors, (5808), 4025 states have internal predecessors, (5808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:41,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4026 states to 4026 states and 5808 transitions. [2023-11-19 08:00:41,892 INFO L78 Accepts]: Start accepts. Automaton has 4026 states and 5808 transitions. Word has length 82 [2023-11-19 08:00:41,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:41,892 INFO L495 AbstractCegarLoop]: Abstraction has 4026 states and 5808 transitions. [2023-11-19 08:00:41,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:41,893 INFO L276 IsEmpty]: Start isEmpty. Operand 4026 states and 5808 transitions. [2023-11-19 08:00:41,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-19 08:00:41,894 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:41,895 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:41,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-19 08:00:41,895 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:41,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:41,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1956730946, now seen corresponding path program 1 times [2023-11-19 08:00:41,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:41,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378770374] [2023-11-19 08:00:41,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:41,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:42,010 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:42,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:42,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378770374] [2023-11-19 08:00:42,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378770374] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:42,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:42,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:00:42,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259634415] [2023-11-19 08:00:42,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:42,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:42,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:42,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:42,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:42,013 INFO L87 Difference]: Start difference. First operand 4026 states and 5808 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:42,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:42,076 INFO L93 Difference]: Finished difference Result 4888 states and 6980 transitions. [2023-11-19 08:00:42,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:00:42,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 84 [2023-11-19 08:00:42,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:42,081 INFO L225 Difference]: With dead ends: 4888 [2023-11-19 08:00:42,081 INFO L226 Difference]: Without dead ends: 3170 [2023-11-19 08:00:42,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:42,085 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 35 mSDsluCounter, 1499 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 3054 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 [2023-11-19 08:00:42,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 3054 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:00:42,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3170 states. [2023-11-19 08:00:42,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3170 to 3168. [2023-11-19 08:00:42,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3168 states, 3166 states have (on average 1.4608338597599495) internal successors, (4625), 3167 states have internal predecessors, (4625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:42,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3168 states to 3168 states and 4625 transitions. [2023-11-19 08:00:42,162 INFO L78 Accepts]: Start accepts. Automaton has 3168 states and 4625 transitions. Word has length 84 [2023-11-19 08:00:42,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:42,163 INFO L495 AbstractCegarLoop]: Abstraction has 3168 states and 4625 transitions. [2023-11-19 08:00:42,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:42,163 INFO L276 IsEmpty]: Start isEmpty. Operand 3168 states and 4625 transitions. [2023-11-19 08:00:42,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-19 08:00:42,165 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:42,165 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:42,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-19 08:00:42,166 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:42,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:42,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1389986160, now seen corresponding path program 1 times [2023-11-19 08:00:42,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:42,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190019387] [2023-11-19 08:00:42,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:42,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:42,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:43,248 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:43,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:43,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190019387] [2023-11-19 08:00:43,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190019387] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:00:43,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524202166] [2023-11-19 08:00:43,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:43,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:43,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87bca6cf-3a5d-4e21-a52c-531359503d6f/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:43,253 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87bca6cf-3a5d-4e21-a52c-531359503d6f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:43,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87bca6cf-3a5d-4e21-a52c-531359503d6f/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:00:43,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:43,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 08:00:43,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:44,182 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:44,182 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:00:45,156 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:45,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524202166] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:00:45,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:00:45,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 26 [2023-11-19 08:00:45,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038679719] [2023-11-19 08:00:45,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:00:45,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-19 08:00:45,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:45,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-19 08:00:45,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2023-11-19 08:00:45,161 INFO L87 Difference]: Start difference. First operand 3168 states and 4625 transitions. Second operand has 27 states, 27 states have (on average 7.925925925925926) internal successors, (214), 26 states have internal predecessors, (214), 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)