./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.6.prop6-back-serstep.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.6.prop6-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya --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 64bit --witnessprinter.graph.data.programhash 7f967787f36e682a81b6796e66392b248bf37e0168ef2f03716921d466d4b9c3 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:22:50,401 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:22:50,466 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-29 00:22:50,472 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:22:50,473 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:22:50,500 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:22:50,501 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:22:50,501 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:22:50,502 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:22:50,503 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:22:50,503 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:22:50,504 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:22:50,505 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:22:50,505 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:22:50,506 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:22:50,506 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:22:50,507 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:22:50,507 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:22:50,508 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:22:50,508 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:22:50,509 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:22:50,509 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:22:50,510 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:22:50,510 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:22:50,511 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:22:50,511 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:22:50,512 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:22:50,512 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:22:50,512 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:22:50,513 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:22:50,513 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:22:50,514 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:22:50,514 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:22:50,514 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:22:50,515 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:22:50,515 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:22:50,515 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:22:50,515 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:22:50,515 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:22:50,516 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_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f967787f36e682a81b6796e66392b248bf37e0168ef2f03716921d466d4b9c3 [2023-11-29 00:22:50,743 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:22:50,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:22:50,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:22:50,778 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:22:50,779 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:22:50,780 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.6.prop6-back-serstep.c [2023-11-29 00:22:53,552 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:22:54,075 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:22:54,076 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.6.prop6-back-serstep.c [2023-11-29 00:22:54,127 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/data/e255e57fa/7d16d47bacff4a12a5e2313402d3c7f3/FLAG7f2485416 [2023-11-29 00:22:54,141 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/data/e255e57fa/7d16d47bacff4a12a5e2313402d3c7f3 [2023-11-29 00:22:54,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:22:54,145 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:22:54,147 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:22:54,147 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:22:54,153 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:22:54,153 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:22:54" (1/1) ... [2023-11-29 00:22:54,154 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12d7fcf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:22:54, skipping insertion in model container [2023-11-29 00:22:54,155 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:22:54" (1/1) ... [2023-11-29 00:22:54,405 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:22:54,715 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_5340ce45-925d-47e0-a5cf-deb55b33421f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.6.prop6-back-serstep.c[1180,1193] [2023-11-29 00:22:56,227 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:22:56,240 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:22:56,253 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_5340ce45-925d-47e0-a5cf-deb55b33421f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.6.prop6-back-serstep.c[1180,1193] [2023-11-29 00:22:57,532 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:22:57,547 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:22:57,547 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:22:57 WrapperNode [2023-11-29 00:22:57,548 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:22:57,548 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:22:57,549 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:22:57,549 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:22:57,555 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:22:57" (1/1) ... [2023-11-29 00:22:57,924 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:22:57" (1/1) ... [2023-11-29 00:23:01,569 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56781 [2023-11-29 00:23:01,570 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:23:01,571 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:23:01,571 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:23:01,571 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:23:01,581 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:22:57" (1/1) ... [2023-11-29 00:23:01,581 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:22:57" (1/1) ... [2023-11-29 00:23:02,467 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:22:57" (1/1) ... [2023-11-29 00:23:02,878 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 00:23:02,878 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:22:57" (1/1) ... [2023-11-29 00:23:02,879 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:22:57" (1/1) ... [2023-11-29 00:23:03,998 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:22:57" (1/1) ... [2023-11-29 00:23:04,218 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:22:57" (1/1) ... [2023-11-29 00:23:04,471 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:22:57" (1/1) ... [2023-11-29 00:23:04,627 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:22:57" (1/1) ... [2023-11-29 00:23:05,388 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:23:05,389 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:23:05,389 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:23:05,389 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:23:05,390 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:22:57" (1/1) ... [2023-11-29 00:23:05,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:23:05,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:23:05,418 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:23:05,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:23:05,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:23:05,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:23:05,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:23:05,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:23:07,624 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:23:07,626 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:23:32,287 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:23:32,970 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:23:32,970 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 00:23:32,977 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:23:32 BoogieIcfgContainer [2023-11-29 00:23:32,977 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:23:32,979 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:23:32,980 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:23:32,983 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:23:32,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:22:54" (1/3) ... [2023-11-29 00:23:32,984 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c54177e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:23:32, skipping insertion in model container [2023-11-29 00:23:32,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:22:57" (2/3) ... [2023-11-29 00:23:32,985 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c54177e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:23:32, skipping insertion in model container [2023-11-29 00:23:32,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:23:32" (3/3) ... [2023-11-29 00:23:32,986 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.pgm_protocol.6.prop6-back-serstep.c [2023-11-29 00:23:33,006 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:23:33,006 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 00:23:33,259 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:23:33,267 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;@4bf8ba42, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:23:33,267 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 00:23:33,310 INFO L276 IsEmpty]: Start isEmpty. Operand has 12232 states, 12230 states have (on average 1.6668847097301718) internal successors, (20386), 12231 states have internal predecessors, (20386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:23:33,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1279 [2023-11-29 00:23:33,422 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:23:33,424 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:23:33,424 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:23:33,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:23:33,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1749307432, now seen corresponding path program 1 times [2023-11-29 00:23:33,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:23:33,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76691780] [2023-11-29 00:23:33,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:23:33,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:23:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:23:39,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:23:39,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:23:39,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76691780] [2023-11-29 00:23:39,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76691780] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:23:39,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:23:39,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:23:39,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39623609] [2023-11-29 00:23:39,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:23:39,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:23:39,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:23:39,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:23:39,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:23:39,760 INFO L87 Difference]: Start difference. First operand has 12232 states, 12230 states have (on average 1.6668847097301718) internal successors, (20386), 12231 states have internal predecessors, (20386), 0 states have call successors, (0), 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 4 states, 4 states have (on average 319.5) internal successors, (1278), 4 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:23:40,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:23:40,339 INFO L93 Difference]: Finished difference Result 23929 states and 39883 transitions. [2023-11-29 00:23:40,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:23:40,342 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 319.5) internal successors, (1278), 4 states have internal predecessors, (1278), 0 states have call successors, (0), 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 1278 [2023-11-29 00:23:40,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:23:40,419 INFO L225 Difference]: With dead ends: 23929 [2023-11-29 00:23:40,419 INFO L226 Difference]: Without dead ends: 12232 [2023-11-29 00:23:40,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:23:40,439 INFO L413 NwaCegarLoop]: 20379 mSDtfsCounter, 1 mSDsluCounter, 40753 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 61132 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:23:40,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 61132 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:23:40,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12232 states. [2023-11-29 00:23:40,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12232 to 12232. [2023-11-29 00:23:40,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12232 states, 12231 states have (on average 1.6665849072030088) internal successors, (20384), 12231 states have internal predecessors, (20384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:23:40,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12232 states to 12232 states and 20384 transitions. [2023-11-29 00:23:40,754 INFO L78 Accepts]: Start accepts. Automaton has 12232 states and 20384 transitions. Word has length 1278 [2023-11-29 00:23:40,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:23:40,757 INFO L495 AbstractCegarLoop]: Abstraction has 12232 states and 20384 transitions. [2023-11-29 00:23:40,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 319.5) internal successors, (1278), 4 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:23:40,758 INFO L276 IsEmpty]: Start isEmpty. Operand 12232 states and 20384 transitions. [2023-11-29 00:23:40,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1280 [2023-11-29 00:23:40,824 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:23:40,825 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:23:40,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:23:40,825 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:23:40,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:23:40,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1607777048, now seen corresponding path program 1 times [2023-11-29 00:23:40,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:23:40,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903624403] [2023-11-29 00:23:40,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:23:40,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:23:41,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:23:43,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:23:43,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:23:43,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903624403] [2023-11-29 00:23:43,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903624403] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:23:43,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:23:43,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:23:43,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104201962] [2023-11-29 00:23:43,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:23:43,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:23:43,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:23:43,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:23:43,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:23:43,356 INFO L87 Difference]: Start difference. First operand 12232 states and 20384 transitions. Second operand has 4 states, 4 states have (on average 319.75) internal successors, (1279), 4 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:23:44,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:23:44,024 INFO L93 Difference]: Finished difference Result 23932 states and 39881 transitions. [2023-11-29 00:23:44,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:23:44,025 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 319.75) internal successors, (1279), 4 states have internal predecessors, (1279), 0 states have call successors, (0), 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 1279 [2023-11-29 00:23:44,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:23:44,095 INFO L225 Difference]: With dead ends: 23932 [2023-11-29 00:23:44,095 INFO L226 Difference]: Without dead ends: 12235 [2023-11-29 00:23:44,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:23:44,113 INFO L413 NwaCegarLoop]: 20379 mSDtfsCounter, 1 mSDsluCounter, 40751 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 61130 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:23:44,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 61130 Invalid, 15 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:23:44,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12235 states. [2023-11-29 00:23:44,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12235 to 12234. [2023-11-29 00:23:44,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12234 states, 12233 states have (on average 1.6664759257745443) internal successors, (20386), 12233 states have internal predecessors, (20386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:23:44,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12234 states to 12234 states and 20386 transitions. [2023-11-29 00:23:44,497 INFO L78 Accepts]: Start accepts. Automaton has 12234 states and 20386 transitions. Word has length 1279 [2023-11-29 00:23:44,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:23:44,499 INFO L495 AbstractCegarLoop]: Abstraction has 12234 states and 20386 transitions. [2023-11-29 00:23:44,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 319.75) internal successors, (1279), 4 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:23:44,500 INFO L276 IsEmpty]: Start isEmpty. Operand 12234 states and 20386 transitions. [2023-11-29 00:23:44,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1281 [2023-11-29 00:23:44,529 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:23:44,531 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:23:44,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 00:23:44,531 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:23:44,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:23:44,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1908943886, now seen corresponding path program 1 times [2023-11-29 00:23:44,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:23:44,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438996949] [2023-11-29 00:23:44,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:23:44,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:23:45,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:23:47,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:23:47,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:23:47,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438996949] [2023-11-29 00:23:47,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438996949] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:23:47,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:23:47,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:23:47,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522270238] [2023-11-29 00:23:47,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:23:47,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:23:47,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:23:47,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:23:47,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:23:47,267 INFO L87 Difference]: Start difference. First operand 12234 states and 20386 transitions. Second operand has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:23:47,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:23:47,843 INFO L93 Difference]: Finished difference Result 35626 states and 59367 transitions. [2023-11-29 00:23:47,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:23:47,844 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 0 states have call successors, (0), 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 1280 [2023-11-29 00:23:47,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:23:47,899 INFO L225 Difference]: With dead ends: 35626 [2023-11-29 00:23:47,899 INFO L226 Difference]: Without dead ends: 23927 [2023-11-29 00:23:47,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:23:47,922 INFO L413 NwaCegarLoop]: 22664 mSDtfsCounter, 19482 mSDsluCounter, 43034 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19482 SdHoareTripleChecker+Valid, 65698 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:23:47,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19482 Valid, 65698 Invalid, 19 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:23:47,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23927 states. [2023-11-29 00:23:48,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23927 to 12236. [2023-11-29 00:23:48,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12236 states, 12235 states have (on average 1.6663669799754801) internal successors, (20388), 12235 states have internal predecessors, (20388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:23:48,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12236 states to 12236 states and 20388 transitions. [2023-11-29 00:23:48,311 INFO L78 Accepts]: Start accepts. Automaton has 12236 states and 20388 transitions. Word has length 1280 [2023-11-29 00:23:48,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:23:48,314 INFO L495 AbstractCegarLoop]: Abstraction has 12236 states and 20388 transitions. [2023-11-29 00:23:48,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:23:48,315 INFO L276 IsEmpty]: Start isEmpty. Operand 12236 states and 20388 transitions. [2023-11-29 00:23:48,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1282 [2023-11-29 00:23:48,344 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:23:48,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:23:48,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 00:23:48,346 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:23:48,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:23:48,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1742771202, now seen corresponding path program 1 times [2023-11-29 00:23:48,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:23:48,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970553059] [2023-11-29 00:23:48,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:23:48,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:23:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:23:50,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:23:50,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:23:50,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970553059] [2023-11-29 00:23:50,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970553059] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:23:50,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:23:50,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:23:50,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034784069] [2023-11-29 00:23:50,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:23:50,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:23:50,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:23:50,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:23:50,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:23:50,960 INFO L87 Difference]: Start difference. First operand 12236 states and 20388 transitions. Second operand has 4 states, 4 states have (on average 320.25) internal successors, (1281), 4 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:23:51,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:23:51,723 INFO L93 Difference]: Finished difference Result 35629 states and 59368 transitions. [2023-11-29 00:23:51,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:23:51,724 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 320.25) internal successors, (1281), 4 states have internal predecessors, (1281), 0 states have call successors, (0), 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 1281 [2023-11-29 00:23:51,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:23:51,759 INFO L225 Difference]: With dead ends: 35629 [2023-11-29 00:23:51,759 INFO L226 Difference]: Without dead ends: 23928 [2023-11-29 00:23:51,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:23:51,782 INFO L413 NwaCegarLoop]: 22659 mSDtfsCounter, 19479 mSDsluCounter, 43029 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19479 SdHoareTripleChecker+Valid, 65688 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:23:51,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19479 Valid, 65688 Invalid, 19 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:23:51,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23928 states. [2023-11-29 00:23:52,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23928 to 12238. [2023-11-29 00:23:52,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12238 states, 12237 states have (on average 1.666258069788347) internal successors, (20390), 12237 states have internal predecessors, (20390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:23:52,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12238 states to 12238 states and 20390 transitions. [2023-11-29 00:23:52,140 INFO L78 Accepts]: Start accepts. Automaton has 12238 states and 20390 transitions. Word has length 1281 [2023-11-29 00:23:52,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:23:52,143 INFO L495 AbstractCegarLoop]: Abstraction has 12238 states and 20390 transitions. [2023-11-29 00:23:52,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 320.25) internal successors, (1281), 4 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:23:52,144 INFO L276 IsEmpty]: Start isEmpty. Operand 12238 states and 20390 transitions. [2023-11-29 00:23:52,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1283 [2023-11-29 00:23:52,175 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:23:52,176 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:23:52,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 00:23:52,177 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:23:52,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:23:52,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1561287922, now seen corresponding path program 1 times [2023-11-29 00:23:52,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:23:52,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103391066] [2023-11-29 00:23:52,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:23:52,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:23:52,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:23:54,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:23:54,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:23:54,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103391066] [2023-11-29 00:23:54,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103391066] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:23:54,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:23:54,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:23:54,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701920356] [2023-11-29 00:23:54,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:23:54,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:23:54,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:23:54,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:23:54,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:23:54,745 INFO L87 Difference]: Start difference. First operand 12238 states and 20390 transitions. Second operand has 4 states, 4 states have (on average 320.5) internal successors, (1282), 4 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:23:55,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:23:55,252 INFO L93 Difference]: Finished difference Result 35632 states and 59369 transitions. [2023-11-29 00:23:55,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:23:55,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 320.5) internal successors, (1282), 4 states have internal predecessors, (1282), 0 states have call successors, (0), 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 1282 [2023-11-29 00:23:55,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:23:55,282 INFO L225 Difference]: With dead ends: 35632 [2023-11-29 00:23:55,282 INFO L226 Difference]: Without dead ends: 23929 [2023-11-29 00:23:55,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:23:55,296 INFO L413 NwaCegarLoop]: 22654 mSDtfsCounter, 19476 mSDsluCounter, 43024 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19476 SdHoareTripleChecker+Valid, 65678 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:23:55,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19476 Valid, 65678 Invalid, 19 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:23:55,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23929 states. [2023-11-29 00:23:55,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23929 to 12240. [2023-11-29 00:23:55,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12240 states, 12239 states have (on average 1.666149195195686) internal successors, (20392), 12239 states have internal predecessors, (20392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:23:55,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12240 states to 12240 states and 20392 transitions. [2023-11-29 00:23:55,588 INFO L78 Accepts]: Start accepts. Automaton has 12240 states and 20392 transitions. Word has length 1282 [2023-11-29 00:23:55,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:23:55,590 INFO L495 AbstractCegarLoop]: Abstraction has 12240 states and 20392 transitions. [2023-11-29 00:23:55,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 320.5) internal successors, (1282), 4 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:23:55,591 INFO L276 IsEmpty]: Start isEmpty. Operand 12240 states and 20392 transitions. [2023-11-29 00:23:55,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1284 [2023-11-29 00:23:55,608 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:23:55,609 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:23:55,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 00:23:55,610 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:23:55,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:23:55,611 INFO L85 PathProgramCache]: Analyzing trace with hash 519633894, now seen corresponding path program 1 times [2023-11-29 00:23:55,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:23:55,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972876630] [2023-11-29 00:23:55,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:23:55,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:23:56,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:23:58,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:23:58,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:23:58,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972876630] [2023-11-29 00:23:58,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972876630] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:23:58,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:23:58,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:23:58,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165711118] [2023-11-29 00:23:58,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:23:58,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:23:58,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:23:58,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:23:58,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:23:58,087 INFO L87 Difference]: Start difference. First operand 12240 states and 20392 transitions. Second operand has 5 states, 5 states have (on average 256.6) internal successors, (1283), 4 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:23:58,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:23:58,638 INFO L93 Difference]: Finished difference Result 37019 states and 61674 transitions. [2023-11-29 00:23:58,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:23:58,639 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 256.6) internal successors, (1283), 4 states have internal predecessors, (1283), 0 states have call successors, (0), 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 1283 [2023-11-29 00:23:58,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:23:58,659 INFO L225 Difference]: With dead ends: 37019 [2023-11-29 00:23:58,659 INFO L226 Difference]: Without dead ends: 25314 [2023-11-29 00:23:58,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:23:58,672 INFO L413 NwaCegarLoop]: 22663 mSDtfsCounter, 79842 mSDsluCounter, 40752 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79842 SdHoareTripleChecker+Valid, 63415 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:23:58,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79842 Valid, 63415 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:23:58,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25314 states. [2023-11-29 00:23:58,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25314 to 13611. [2023-11-29 00:23:58,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13611 states, 13610 states have (on average 1.6662013225569434) internal successors, (22677), 13610 states have internal predecessors, (22677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:23:58,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13611 states to 13611 states and 22677 transitions. [2023-11-29 00:23:58,891 INFO L78 Accepts]: Start accepts. Automaton has 13611 states and 22677 transitions. Word has length 1283 [2023-11-29 00:23:58,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:23:58,892 INFO L495 AbstractCegarLoop]: Abstraction has 13611 states and 22677 transitions. [2023-11-29 00:23:58,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 256.6) internal successors, (1283), 4 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:23:58,893 INFO L276 IsEmpty]: Start isEmpty. Operand 13611 states and 22677 transitions. [2023-11-29 00:23:59,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9067 [2023-11-29 00:23:59,303 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:23:59,308 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:23:59,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 00:23:59,309 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:23:59,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:23:59,312 INFO L85 PathProgramCache]: Analyzing trace with hash -2054231998, now seen corresponding path program 1 times [2023-11-29 00:23:59,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:23:59,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958315850] [2023-11-29 00:23:59,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:23:59,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:24:00,418 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:24:00,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [751263147] [2023-11-29 00:24:00,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:24:00,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:24:00,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:24:00,422 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:24:00,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 00:24:13,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:24:13,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 45854 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 00:24:13,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:24:15,523 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 12 proven. 679 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-11-29 00:24:15,523 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:24:15,775 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 908 trivial. 0 not checked. [2023-11-29 00:24:15,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:24:15,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958315850] [2023-11-29 00:24:15,776 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:24:15,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751263147] [2023-11-29 00:24:15,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751263147] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:24:15,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:24:15,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-29 00:24:15,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857798887] [2023-11-29 00:24:15,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:24:15,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:24:15,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:24:15,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:24:15,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:24:15,797 INFO L87 Difference]: Start difference. First operand 13611 states and 22677 transitions. Second operand has 5 states, 5 states have (on average 1631.8) internal successors, (8159), 5 states have internal predecessors, (8159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:33,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:24:33,158 INFO L93 Difference]: Finished difference Result 47490 states and 78715 transitions. [2023-11-29 00:24:33,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:24:33,161 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1631.8) internal successors, (8159), 5 states have internal predecessors, (8159), 0 states have call successors, (0), 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 9066 [2023-11-29 00:24:33,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:24:33,200 INFO L225 Difference]: With dead ends: 47490 [2023-11-29 00:24:33,200 INFO L226 Difference]: Without dead ends: 25303 [2023-11-29 00:24:33,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18131 GetRequests, 18122 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:24:33,219 INFO L413 NwaCegarLoop]: 32321 mSDtfsCounter, 35272 mSDsluCounter, 48984 mSDsCounter, 0 mSdLazyCounter, 22835 mSolverCounterSat, 1225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35272 SdHoareTripleChecker+Valid, 81305 SdHoareTripleChecker+Invalid, 24060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1225 IncrementalHoareTripleChecker+Valid, 22835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:24:33,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35272 Valid, 81305 Invalid, 24060 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1225 Valid, 22835 Invalid, 0 Unknown, 0 Unchecked, 16.5s Time] [2023-11-29 00:24:33,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25303 states. [2023-11-29 00:24:33,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25303 to 13613. [2023-11-29 00:24:33,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13613 states, 13612 states have (on average 1.6661034381428153) internal successors, (22679), 13612 states have internal predecessors, (22679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:33,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13613 states to 13613 states and 22679 transitions. [2023-11-29 00:24:33,528 INFO L78 Accepts]: Start accepts. Automaton has 13613 states and 22679 transitions. Word has length 9066 [2023-11-29 00:24:33,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:24:33,536 INFO L495 AbstractCegarLoop]: Abstraction has 13613 states and 22679 transitions. [2023-11-29 00:24:33,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1631.8) internal successors, (8159), 5 states have internal predecessors, (8159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:24:33,539 INFO L276 IsEmpty]: Start isEmpty. Operand 13613 states and 22679 transitions. [2023-11-29 00:24:34,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9068 [2023-11-29 00:24:34,088 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:24:34,093 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:24:34,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:24:34,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:24:34,293 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:24:34,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:24:34,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1097678260, now seen corresponding path program 1 times [2023-11-29 00:24:34,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:24:34,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655268960] [2023-11-29 00:24:34,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:24:34,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:24:35,342 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:24:35,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1548459644] [2023-11-29 00:24:35,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:24:35,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:24:35,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:24:35,345 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:24:35,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 00:24:47,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:24:48,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 45857 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 00:24:48,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:24:49,596 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 14 proven. 679 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2023-11-29 00:24:49,597 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:24:49,774 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 906 trivial. 0 not checked. [2023-11-29 00:24:49,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:24:49,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655268960] [2023-11-29 00:24:49,774 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:24:49,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548459644] [2023-11-29 00:24:49,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548459644] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:24:49,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:24:49,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-29 00:24:49,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203805679] [2023-11-29 00:24:49,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:24:49,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:24:49,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:24:49,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:24:49,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:24:49,801 INFO L87 Difference]: Start difference. First operand 13613 states and 22679 transitions. Second operand has 5 states, 5 states have (on average 1632.4) internal successors, (8162), 5 states have internal predecessors, (8162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:25:04,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:25:04,632 INFO L93 Difference]: Finished difference Result 47498 states and 78723 transitions. [2023-11-29 00:25:04,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:25:04,635 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1632.4) internal successors, (8162), 5 states have internal predecessors, (8162), 0 states have call successors, (0), 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 9067 [2023-11-29 00:25:04,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:25:04,668 INFO L225 Difference]: With dead ends: 47498 [2023-11-29 00:25:04,668 INFO L226 Difference]: Without dead ends: 25304 [2023-11-29 00:25:04,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18133 GetRequests, 18124 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:25:04,683 INFO L413 NwaCegarLoop]: 32313 mSDtfsCounter, 51066 mSDsluCounter, 32107 mSDsCounter, 0 mSdLazyCounter, 17055 mSolverCounterSat, 1225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51066 SdHoareTripleChecker+Valid, 64420 SdHoareTripleChecker+Invalid, 18280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1225 IncrementalHoareTripleChecker+Valid, 17055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:25:04,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51066 Valid, 64420 Invalid, 18280 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1225 Valid, 17055 Invalid, 0 Unknown, 0 Unchecked, 14.1s Time] [2023-11-29 00:25:04,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25304 states. [2023-11-29 00:25:04,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25304 to 13615. [2023-11-29 00:25:04,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13615 states, 13614 states have (on average 1.6660055824886146) internal successors, (22681), 13614 states have internal predecessors, (22681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:25:04,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13615 states to 13615 states and 22681 transitions. [2023-11-29 00:25:04,905 INFO L78 Accepts]: Start accepts. Automaton has 13615 states and 22681 transitions. Word has length 9067 [2023-11-29 00:25:04,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:25:04,912 INFO L495 AbstractCegarLoop]: Abstraction has 13615 states and 22681 transitions. [2023-11-29 00:25:04,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1632.4) internal successors, (8162), 5 states have internal predecessors, (8162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:25:04,914 INFO L276 IsEmpty]: Start isEmpty. Operand 13615 states and 22681 transitions. [2023-11-29 00:25:05,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9069 [2023-11-29 00:25:05,437 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:25:05,442 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:25:05,570 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 00:25:05,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:25:05,643 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:25:05,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:25:05,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1529902632, now seen corresponding path program 1 times [2023-11-29 00:25:05,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:25:05,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814278915] [2023-11-29 00:25:05,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:25:05,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:25:06,679 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:25:06,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1449171721] [2023-11-29 00:25:06,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:25:06,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:25:06,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:25:06,683 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:25:06,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 00:25:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:25:19,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 45860 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 00:25:19,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:25:20,569 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 16 proven. 679 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2023-11-29 00:25:20,569 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:25:20,815 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 904 trivial. 0 not checked. [2023-11-29 00:25:20,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:25:20,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814278915] [2023-11-29 00:25:20,815 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:25:20,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449171721] [2023-11-29 00:25:20,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449171721] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:25:20,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:25:20,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-11-29 00:25:20,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089759970] [2023-11-29 00:25:20,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:25:20,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:25:20,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:25:20,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:25:20,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:25:20,835 INFO L87 Difference]: Start difference. First operand 13615 states and 22681 transitions. Second operand has 6 states, 6 states have (on average 1360.8333333333333) internal successors, (8165), 6 states have internal predecessors, (8165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:25:49,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:25:49,054 INFO L93 Difference]: Finished difference Result 59224 states and 98251 transitions. [2023-11-29 00:25:49,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:25:49,056 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1360.8333333333333) internal successors, (8165), 6 states have internal predecessors, (8165), 0 states have call successors, (0), 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 9068 [2023-11-29 00:25:49,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:25:49,090 INFO L225 Difference]: With dead ends: 59224 [2023-11-29 00:25:49,090 INFO L226 Difference]: Without dead ends: 37023 [2023-11-29 00:25:49,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18136 GetRequests, 18124 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:25:49,102 INFO L413 NwaCegarLoop]: 32307 mSDtfsCounter, 70546 mSDsluCounter, 78122 mSDsCounter, 0 mSdLazyCounter, 36328 mSolverCounterSat, 1227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70546 SdHoareTripleChecker+Valid, 110429 SdHoareTripleChecker+Invalid, 37555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 1227 IncrementalHoareTripleChecker+Valid, 36328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.7s IncrementalHoareTripleChecker+Time [2023-11-29 00:25:49,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70546 Valid, 110429 Invalid, 37555 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [1227 Valid, 36328 Invalid, 0 Unknown, 0 Unchecked, 26.7s Time] [2023-11-29 00:25:49,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37023 states. [2023-11-29 00:25:49,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37023 to 13617. [2023-11-29 00:25:49,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13617 states, 13616 states have (on average 1.6659077555816686) internal successors, (22683), 13616 states have internal predecessors, (22683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:25:49,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13617 states to 13617 states and 22683 transitions. [2023-11-29 00:25:49,339 INFO L78 Accepts]: Start accepts. Automaton has 13617 states and 22683 transitions. Word has length 9068 [2023-11-29 00:25:49,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:25:49,344 INFO L495 AbstractCegarLoop]: Abstraction has 13617 states and 22683 transitions. [2023-11-29 00:25:49,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1360.8333333333333) internal successors, (8165), 6 states have internal predecessors, (8165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:25:49,346 INFO L276 IsEmpty]: Start isEmpty. Operand 13617 states and 22683 transitions. [2023-11-29 00:25:49,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9070 [2023-11-29 00:25:49,802 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:25:49,807 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:25:49,938 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 00:25:50,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:25:50,008 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:25:50,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:25:50,012 INFO L85 PathProgramCache]: Analyzing trace with hash -291798680, now seen corresponding path program 1 times [2023-11-29 00:25:50,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:25:50,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352591169] [2023-11-29 00:25:50,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:25:50,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:25:50,969 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:25:50,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [342155856] [2023-11-29 00:25:50,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:25:50,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:25:50,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:25:50,972 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:25:50,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 00:26:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:26:03,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 45864 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 00:26:03,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:26:04,893 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 18 proven. 679 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2023-11-29 00:26:04,893 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:26:05,070 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 902 trivial. 0 not checked. [2023-11-29 00:26:05,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:26:05,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352591169] [2023-11-29 00:26:05,070 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:26:05,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342155856] [2023-11-29 00:26:05,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342155856] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:26:05,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:26:05,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-29 00:26:05,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283283998] [2023-11-29 00:26:05,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:26:05,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:26:05,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:26:05,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:26:05,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:26:05,092 INFO L87 Difference]: Start difference. First operand 13617 states and 22683 transitions. Second operand has 5 states, 5 states have (on average 1633.6) internal successors, (8168), 5 states have internal predecessors, (8168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:26:20,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:26:20,031 INFO L93 Difference]: Finished difference Result 47514 states and 78739 transitions. [2023-11-29 00:26:20,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:26:20,033 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1633.6) internal successors, (8168), 5 states have internal predecessors, (8168), 0 states have call successors, (0), 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 9069 [2023-11-29 00:26:20,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:26:20,056 INFO L225 Difference]: With dead ends: 47514 [2023-11-29 00:26:20,056 INFO L226 Difference]: Without dead ends: 25306 [2023-11-29 00:26:20,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18137 GetRequests, 18128 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:26:20,065 INFO L413 NwaCegarLoop]: 32297 mSDtfsCounter, 51050 mSDsluCounter, 32097 mSDsCounter, 0 mSdLazyCounter, 17055 mSolverCounterSat, 1225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51050 SdHoareTripleChecker+Valid, 64394 SdHoareTripleChecker+Invalid, 18280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1225 IncrementalHoareTripleChecker+Valid, 17055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:26:20,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51050 Valid, 64394 Invalid, 18280 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1225 Valid, 17055 Invalid, 0 Unknown, 0 Unchecked, 14.2s Time] [2023-11-29 00:26:20,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25306 states. [2023-11-29 00:26:20,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25306 to 13619. [2023-11-29 00:26:20,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13619 states, 13618 states have (on average 1.6658099574093113) internal successors, (22685), 13618 states have internal predecessors, (22685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:26:20,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13619 states to 13619 states and 22685 transitions. [2023-11-29 00:26:20,277 INFO L78 Accepts]: Start accepts. Automaton has 13619 states and 22685 transitions. Word has length 9069 [2023-11-29 00:26:20,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:26:20,283 INFO L495 AbstractCegarLoop]: Abstraction has 13619 states and 22685 transitions. [2023-11-29 00:26:20,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1633.6) internal successors, (8168), 5 states have internal predecessors, (8168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:26:20,284 INFO L276 IsEmpty]: Start isEmpty. Operand 13619 states and 22685 transitions. [2023-11-29 00:26:20,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9071 [2023-11-29 00:26:20,633 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:26:20,637 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:26:20,770 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 00:26:20,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 00:26:20,838 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:26:20,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:26:20,842 INFO L85 PathProgramCache]: Analyzing trace with hash 744943632, now seen corresponding path program 1 times [2023-11-29 00:26:20,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:26:20,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818243358] [2023-11-29 00:26:20,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:26:20,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:26:21,961 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:26:21,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [187181738] [2023-11-29 00:26:21,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:26:21,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:26:21,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:26:21,964 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:26:21,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 00:26:34,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:26:35,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 45867 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 00:26:35,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:26:36,275 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 20 proven. 679 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2023-11-29 00:26:36,275 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:26:36,507 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2023-11-29 00:26:36,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:26:36,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818243358] [2023-11-29 00:26:36,508 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:26:36,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187181738] [2023-11-29 00:26:36,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187181738] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:26:36,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:26:36,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-29 00:26:36,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227903222] [2023-11-29 00:26:36,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:26:36,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:26:36,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:26:36,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:26:36,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:26:36,534 INFO L87 Difference]: Start difference. First operand 13619 states and 22685 transitions. Second operand has 5 states, 5 states have (on average 1634.2) internal successors, (8171), 5 states have internal predecessors, (8171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:26:53,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:26:53,809 INFO L93 Difference]: Finished difference Result 47522 states and 78747 transitions. [2023-11-29 00:26:53,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:26:53,811 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1634.2) internal successors, (8171), 5 states have internal predecessors, (8171), 0 states have call successors, (0), 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 9070 [2023-11-29 00:26:53,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:26:53,831 INFO L225 Difference]: With dead ends: 47522 [2023-11-29 00:26:53,831 INFO L226 Difference]: Without dead ends: 25307 [2023-11-29 00:26:53,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18139 GetRequests, 18130 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:26:53,840 INFO L413 NwaCegarLoop]: 32289 mSDtfsCounter, 35256 mSDsluCounter, 46650 mSDsCounter, 0 mSdLazyCounter, 21959 mSolverCounterSat, 1225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35256 SdHoareTripleChecker+Valid, 78939 SdHoareTripleChecker+Invalid, 23184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 1225 IncrementalHoareTripleChecker+Valid, 21959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:26:53,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35256 Valid, 78939 Invalid, 23184 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [1225 Valid, 21959 Invalid, 0 Unknown, 0 Unchecked, 16.3s Time] [2023-11-29 00:26:53,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25307 states. [2023-11-29 00:26:54,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25307 to 13621. [2023-11-29 00:26:54,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13621 states, 13620 states have (on average 1.665712187958884) internal successors, (22687), 13620 states have internal predecessors, (22687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:26:54,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13621 states to 13621 states and 22687 transitions. [2023-11-29 00:26:54,044 INFO L78 Accepts]: Start accepts. Automaton has 13621 states and 22687 transitions. Word has length 9070 [2023-11-29 00:26:54,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:26:54,050 INFO L495 AbstractCegarLoop]: Abstraction has 13621 states and 22687 transitions. [2023-11-29 00:26:54,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1634.2) internal successors, (8171), 5 states have internal predecessors, (8171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:26:54,052 INFO L276 IsEmpty]: Start isEmpty. Operand 13621 states and 22687 transitions. [2023-11-29 00:26:54,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9072 [2023-11-29 00:26:54,375 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:26:54,379 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:26:54,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 00:26:54,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 00:26:54,580 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:26:54,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:26:54,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1831345022, now seen corresponding path program 1 times [2023-11-29 00:26:54,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:26:54,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565417441] [2023-11-29 00:26:54,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:26:54,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:26:55,468 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:26:55,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [837105054] [2023-11-29 00:26:55,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:26:55,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:26:55,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:26:55,470 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:26:55,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 00:27:08,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:27:08,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 45870 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 00:27:08,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:27:09,597 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 22 proven. 679 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2023-11-29 00:27:09,598 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:27:09,784 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 898 trivial. 0 not checked. [2023-11-29 00:27:09,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:27:09,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565417441] [2023-11-29 00:27:09,784 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:27:09,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837105054] [2023-11-29 00:27:09,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837105054] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:27:09,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:27:09,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-29 00:27:09,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233852867] [2023-11-29 00:27:09,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:27:09,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:27:09,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:27:09,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:27:09,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:27:09,811 INFO L87 Difference]: Start difference. First operand 13621 states and 22687 transitions. Second operand has 5 states, 5 states have (on average 1634.8) internal successors, (8174), 5 states have internal predecessors, (8174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:27:25,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:27:25,010 INFO L93 Difference]: Finished difference Result 47530 states and 78755 transitions. [2023-11-29 00:27:25,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:27:25,012 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1634.8) internal successors, (8174), 5 states have internal predecessors, (8174), 0 states have call successors, (0), 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 9071 [2023-11-29 00:27:25,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:27:25,037 INFO L225 Difference]: With dead ends: 47530 [2023-11-29 00:27:25,037 INFO L226 Difference]: Without dead ends: 25308 [2023-11-29 00:27:25,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18141 GetRequests, 18132 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:27:25,049 INFO L413 NwaCegarLoop]: 32281 mSDtfsCounter, 51025 mSDsluCounter, 32088 mSDsCounter, 0 mSdLazyCounter, 17055 mSolverCounterSat, 1225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51025 SdHoareTripleChecker+Valid, 64369 SdHoareTripleChecker+Invalid, 18280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1225 IncrementalHoareTripleChecker+Valid, 17055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:27:25,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51025 Valid, 64369 Invalid, 18280 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1225 Valid, 17055 Invalid, 0 Unknown, 0 Unchecked, 14.4s Time] [2023-11-29 00:27:25,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25308 states. [2023-11-29 00:27:25,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25308 to 13623. [2023-11-29 00:27:25,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13623 states, 13622 states have (on average 1.665614447217736) internal successors, (22689), 13622 states have internal predecessors, (22689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:27:25,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13623 states to 13623 states and 22689 transitions. [2023-11-29 00:27:25,243 INFO L78 Accepts]: Start accepts. Automaton has 13623 states and 22689 transitions. Word has length 9071 [2023-11-29 00:27:25,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:27:25,248 INFO L495 AbstractCegarLoop]: Abstraction has 13623 states and 22689 transitions. [2023-11-29 00:27:25,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1634.8) internal successors, (8174), 5 states have internal predecessors, (8174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:27:25,250 INFO L276 IsEmpty]: Start isEmpty. Operand 13623 states and 22689 transitions. [2023-11-29 00:27:25,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9073 [2023-11-29 00:27:25,565 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:27:25,567 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:27:25,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 00:27:25,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 00:27:25,767 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:27:25,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:27:25,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1248853514, now seen corresponding path program 1 times [2023-11-29 00:27:25,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:27:25,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028183131] [2023-11-29 00:27:25,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:25,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:27:26,623 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:27:26,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [470624328] [2023-11-29 00:27:26,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:26,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:26,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:27:26,626 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:27:26,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 00:27:39,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:27:39,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 45873 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 00:27:39,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:27:40,621 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 24 proven. 679 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2023-11-29 00:27:40,621 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:27:40,810 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 896 trivial. 0 not checked. [2023-11-29 00:27:40,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:27:40,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028183131] [2023-11-29 00:27:40,810 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:27:40,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470624328] [2023-11-29 00:27:40,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470624328] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:27:40,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:27:40,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-29 00:27:40,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190483439] [2023-11-29 00:27:40,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:27:40,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:27:40,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:27:40,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:27:40,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:27:40,832 INFO L87 Difference]: Start difference. First operand 13623 states and 22689 transitions. Second operand has 5 states, 5 states have (on average 1635.4) internal successors, (8177), 5 states have internal predecessors, (8177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:27:55,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:27:55,757 INFO L93 Difference]: Finished difference Result 47538 states and 78763 transitions. [2023-11-29 00:27:55,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:27:55,759 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1635.4) internal successors, (8177), 5 states have internal predecessors, (8177), 0 states have call successors, (0), 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 9072 [2023-11-29 00:27:55,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:27:55,781 INFO L225 Difference]: With dead ends: 47538 [2023-11-29 00:27:55,781 INFO L226 Difference]: Without dead ends: 25309 [2023-11-29 00:27:55,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18143 GetRequests, 18134 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:27:55,789 INFO L413 NwaCegarLoop]: 32273 mSDtfsCounter, 51026 mSDsluCounter, 32082 mSDsCounter, 0 mSdLazyCounter, 17055 mSolverCounterSat, 1225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51026 SdHoareTripleChecker+Valid, 64355 SdHoareTripleChecker+Invalid, 18280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1225 IncrementalHoareTripleChecker+Valid, 17055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:27:55,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51026 Valid, 64355 Invalid, 18280 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1225 Valid, 17055 Invalid, 0 Unknown, 0 Unchecked, 14.0s Time] [2023-11-29 00:27:55,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25309 states. [2023-11-29 00:27:55,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25309 to 13625. [2023-11-29 00:27:55,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13625 states, 13624 states have (on average 1.6655167351732236) internal successors, (22691), 13624 states have internal predecessors, (22691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:27:55,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13625 states to 13625 states and 22691 transitions. [2023-11-29 00:27:55,978 INFO L78 Accepts]: Start accepts. Automaton has 13625 states and 22691 transitions. Word has length 9072 [2023-11-29 00:27:55,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:27:55,984 INFO L495 AbstractCegarLoop]: Abstraction has 13625 states and 22691 transitions. [2023-11-29 00:27:55,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1635.4) internal successors, (8177), 5 states have internal predecessors, (8177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:27:55,985 INFO L276 IsEmpty]: Start isEmpty. Operand 13625 states and 22691 transitions. [2023-11-29 00:27:56,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9074 [2023-11-29 00:27:56,307 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:27:56,308 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:27:56,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 00:27:56,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:56,509 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:27:56,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:27:56,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1035553950, now seen corresponding path program 1 times [2023-11-29 00:27:56,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:27:56,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083257653] [2023-11-29 00:27:56,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:56,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:27:57,541 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:27:57,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1660493677] [2023-11-29 00:27:57,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:27:57,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:27:57,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:27:57,545 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:27:57,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 00:28:09,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:28:10,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 45877 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 00:28:10,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:28:11,267 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 26 proven. 679 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2023-11-29 00:28:11,267 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:28:11,443 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 894 trivial. 0 not checked. [2023-11-29 00:28:11,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:11,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083257653] [2023-11-29 00:28:11,443 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:28:11,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660493677] [2023-11-29 00:28:11,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660493677] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:28:11,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:28:11,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-29 00:28:11,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733380351] [2023-11-29 00:28:11,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:28:11,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:28:11,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:11,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:28:11,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:28:11,459 INFO L87 Difference]: Start difference. First operand 13625 states and 22691 transitions. Second operand has 5 states, 5 states have (on average 1636.0) internal successors, (8180), 5 states have internal predecessors, (8180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:28:26,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:28:26,310 INFO L93 Difference]: Finished difference Result 47546 states and 78771 transitions. [2023-11-29 00:28:26,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:28:26,312 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1636.0) internal successors, (8180), 5 states have internal predecessors, (8180), 0 states have call successors, (0), 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 9073 [2023-11-29 00:28:26,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:28:26,337 INFO L225 Difference]: With dead ends: 47546 [2023-11-29 00:28:26,337 INFO L226 Difference]: Without dead ends: 25310 [2023-11-29 00:28:26,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18145 GetRequests, 18136 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:28:26,350 INFO L413 NwaCegarLoop]: 32265 mSDtfsCounter, 51007 mSDsluCounter, 32078 mSDsCounter, 0 mSdLazyCounter, 17055 mSolverCounterSat, 1225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51007 SdHoareTripleChecker+Valid, 64343 SdHoareTripleChecker+Invalid, 18280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1225 IncrementalHoareTripleChecker+Valid, 17055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:28:26,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51007 Valid, 64343 Invalid, 18280 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1225 Valid, 17055 Invalid, 0 Unknown, 0 Unchecked, 14.1s Time] [2023-11-29 00:28:26,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25310 states. [2023-11-29 00:28:26,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25310 to 13627. [2023-11-29 00:28:26,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13627 states, 13626 states have (on average 1.665419051812711) internal successors, (22693), 13626 states have internal predecessors, (22693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:28:26,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13627 states to 13627 states and 22693 transitions. [2023-11-29 00:28:26,540 INFO L78 Accepts]: Start accepts. Automaton has 13627 states and 22693 transitions. Word has length 9073 [2023-11-29 00:28:26,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:28:26,545 INFO L495 AbstractCegarLoop]: Abstraction has 13627 states and 22693 transitions. [2023-11-29 00:28:26,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1636.0) internal successors, (8180), 5 states have internal predecessors, (8180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:28:26,547 INFO L276 IsEmpty]: Start isEmpty. Operand 13627 states and 22693 transitions. [2023-11-29 00:28:26,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9075 [2023-11-29 00:28:26,991 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:28:26,993 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:28:27,114 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 00:28:27,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 00:28:27,194 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:28:27,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:27,199 INFO L85 PathProgramCache]: Analyzing trace with hash -516240162, now seen corresponding path program 1 times [2023-11-29 00:28:27,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:27,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264658188] [2023-11-29 00:28:27,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:27,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:28,032 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:28:28,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1274355288] [2023-11-29 00:28:28,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:28,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:28,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:28:28,035 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:28:28,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 00:28:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:28:40,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 45880 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 00:28:40,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:28:41,612 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 28 proven. 679 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2023-11-29 00:28:41,613 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:28:41,787 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 892 trivial. 0 not checked. [2023-11-29 00:28:41,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:28:41,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264658188] [2023-11-29 00:28:41,787 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:28:41,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274355288] [2023-11-29 00:28:41,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274355288] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:28:41,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:28:41,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-29 00:28:41,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695822475] [2023-11-29 00:28:41,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:28:41,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:28:41,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:28:41,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:28:41,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:28:41,803 INFO L87 Difference]: Start difference. First operand 13627 states and 22693 transitions. Second operand has 5 states, 5 states have (on average 1636.6) internal successors, (8183), 5 states have internal predecessors, (8183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:28:57,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:28:57,339 INFO L93 Difference]: Finished difference Result 47554 states and 78779 transitions. [2023-11-29 00:28:57,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:28:57,341 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1636.6) internal successors, (8183), 5 states have internal predecessors, (8183), 0 states have call successors, (0), 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 9074 [2023-11-29 00:28:57,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:28:57,367 INFO L225 Difference]: With dead ends: 47554 [2023-11-29 00:28:57,367 INFO L226 Difference]: Without dead ends: 25311 [2023-11-29 00:28:57,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18147 GetRequests, 18138 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:28:57,381 INFO L413 NwaCegarLoop]: 32257 mSDtfsCounter, 51010 mSDsluCounter, 32072 mSDsCounter, 0 mSdLazyCounter, 17055 mSolverCounterSat, 1225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51010 SdHoareTripleChecker+Valid, 64329 SdHoareTripleChecker+Invalid, 18280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1225 IncrementalHoareTripleChecker+Valid, 17055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2023-11-29 00:28:57,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51010 Valid, 64329 Invalid, 18280 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1225 Valid, 17055 Invalid, 0 Unknown, 0 Unchecked, 14.7s Time] [2023-11-29 00:28:57,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25311 states. [2023-11-29 00:28:57,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25311 to 13629. [2023-11-29 00:28:57,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13629 states, 13628 states have (on average 1.6653213971235692) internal successors, (22695), 13628 states have internal predecessors, (22695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:28:57,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13629 states to 13629 states and 22695 transitions. [2023-11-29 00:28:57,580 INFO L78 Accepts]: Start accepts. Automaton has 13629 states and 22695 transitions. Word has length 9074 [2023-11-29 00:28:57,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:28:57,584 INFO L495 AbstractCegarLoop]: Abstraction has 13629 states and 22695 transitions. [2023-11-29 00:28:57,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1636.6) internal successors, (8183), 5 states have internal predecessors, (8183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:28:57,586 INFO L276 IsEmpty]: Start isEmpty. Operand 13629 states and 22695 transitions. [2023-11-29 00:28:57,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9076 [2023-11-29 00:28:57,901 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:28:57,903 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:28:58,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 00:28:58,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 00:28:58,104 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:28:58,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:28:58,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1163818056, now seen corresponding path program 1 times [2023-11-29 00:28:58,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:28:58,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737512128] [2023-11-29 00:28:58,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:58,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:28:59,071 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:28:59,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1932470829] [2023-11-29 00:28:59,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:28:59,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:28:59,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:28:59,074 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:28:59,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 00:29:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:10,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 45883 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 00:29:11,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:12,072 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 30 proven. 679 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2023-11-29 00:29:12,072 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:12,250 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 890 trivial. 0 not checked. [2023-11-29 00:29:12,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:12,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737512128] [2023-11-29 00:29:12,250 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:29:12,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932470829] [2023-11-29 00:29:12,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932470829] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:29:12,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:29:12,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-29 00:29:12,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774701880] [2023-11-29 00:29:12,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:12,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:29:12,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:12,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:29:12,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:29:12,267 INFO L87 Difference]: Start difference. First operand 13629 states and 22695 transitions. Second operand has 5 states, 5 states have (on average 1637.2) internal successors, (8186), 5 states have internal predecessors, (8186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:29,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:29,389 INFO L93 Difference]: Finished difference Result 47562 states and 78787 transitions. [2023-11-29 00:29:29,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:29:29,391 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1637.2) internal successors, (8186), 5 states have internal predecessors, (8186), 0 states have call successors, (0), 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 9075 [2023-11-29 00:29:29,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:29,412 INFO L225 Difference]: With dead ends: 47562 [2023-11-29 00:29:29,412 INFO L226 Difference]: Without dead ends: 25312 [2023-11-29 00:29:29,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18149 GetRequests, 18140 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:29:29,420 INFO L413 NwaCegarLoop]: 32249 mSDtfsCounter, 35218 mSDsluCounter, 48894 mSDsCounter, 0 mSdLazyCounter, 22835 mSolverCounterSat, 1225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35218 SdHoareTripleChecker+Valid, 81143 SdHoareTripleChecker+Invalid, 24060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1225 IncrementalHoareTripleChecker+Valid, 22835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:29,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35218 Valid, 81143 Invalid, 24060 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1225 Valid, 22835 Invalid, 0 Unknown, 0 Unchecked, 16.3s Time] [2023-11-29 00:29:29,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25312 states. [2023-11-29 00:29:29,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25312 to 13631. [2023-11-29 00:29:29,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13631 states, 13630 states have (on average 1.6652237710931768) internal successors, (22697), 13630 states have internal predecessors, (22697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:29,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13631 states to 13631 states and 22697 transitions. [2023-11-29 00:29:29,582 INFO L78 Accepts]: Start accepts. Automaton has 13631 states and 22697 transitions. Word has length 9075 [2023-11-29 00:29:29,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:29,587 INFO L495 AbstractCegarLoop]: Abstraction has 13631 states and 22697 transitions. [2023-11-29 00:29:29,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1637.2) internal successors, (8186), 5 states have internal predecessors, (8186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:29,588 INFO L276 IsEmpty]: Start isEmpty. Operand 13631 states and 22697 transitions. [2023-11-29 00:29:29,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9077 [2023-11-29 00:29:29,901 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:29,903 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:30,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 00:29:30,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 00:29:30,104 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:29:30,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:30,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1063707332, now seen corresponding path program 1 times [2023-11-29 00:29:30,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:30,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301126645] [2023-11-29 00:29:30,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:30,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:30,951 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:29:30,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [458336947] [2023-11-29 00:29:30,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:30,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:29:30,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:29:30,954 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:29:30,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 00:29:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:43,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 45886 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 00:29:43,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:44,458 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 32 proven. 679 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2023-11-29 00:29:44,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:44,656 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 888 trivial. 0 not checked. [2023-11-29 00:29:44,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:44,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301126645] [2023-11-29 00:29:44,657 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:29:44,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458336947] [2023-11-29 00:29:44,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458336947] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:29:44,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:29:44,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-11-29 00:29:44,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434204914] [2023-11-29 00:29:44,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:44,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:29:44,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:44,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:29:44,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:29:44,672 INFO L87 Difference]: Start difference. First operand 13631 states and 22697 transitions. Second operand has 6 states, 6 states have (on average 1364.8333333333333) internal successors, (8189), 6 states have internal predecessors, (8189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:18,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:30:18,811 INFO L93 Difference]: Finished difference Result 59328 states and 98371 transitions. [2023-11-29 00:30:18,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:30:18,813 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1364.8333333333333) internal successors, (8189), 6 states have internal predecessors, (8189), 0 states have call successors, (0), 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 9076 [2023-11-29 00:30:18,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:30:18,850 INFO L225 Difference]: With dead ends: 59328 [2023-11-29 00:30:18,851 INFO L226 Difference]: Without dead ends: 37071 [2023-11-29 00:30:18,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18152 GetRequests, 18140 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:30:18,868 INFO L413 NwaCegarLoop]: 32243 mSDtfsCounter, 54698 mSDsluCounter, 109447 mSDsCounter, 0 mSdLazyCounter, 47013 mSolverCounterSat, 1227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54698 SdHoareTripleChecker+Valid, 141690 SdHoareTripleChecker+Invalid, 48240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 1227 IncrementalHoareTripleChecker+Valid, 47013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:30:18,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54698 Valid, 141690 Invalid, 48240 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [1227 Valid, 47013 Invalid, 0 Unknown, 0 Unchecked, 32.6s Time] [2023-11-29 00:30:18,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37071 states. [2023-11-29 00:30:19,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37071 to 13633. [2023-11-29 00:30:19,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13633 states, 13632 states have (on average 1.6651261737089202) internal successors, (22699), 13632 states have internal predecessors, (22699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:19,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13633 states to 13633 states and 22699 transitions. [2023-11-29 00:30:19,128 INFO L78 Accepts]: Start accepts. Automaton has 13633 states and 22699 transitions. Word has length 9076 [2023-11-29 00:30:19,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:30:19,133 INFO L495 AbstractCegarLoop]: Abstraction has 13633 states and 22699 transitions. [2023-11-29 00:30:19,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1364.8333333333333) internal successors, (8189), 6 states have internal predecessors, (8189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:19,135 INFO L276 IsEmpty]: Start isEmpty. Operand 13633 states and 22699 transitions. [2023-11-29 00:30:19,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9078 [2023-11-29 00:30:19,514 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:30:19,517 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:30:19,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 00:30:19,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 00:30:19,718 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:30:19,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:19,721 INFO L85 PathProgramCache]: Analyzing trace with hash -885744428, now seen corresponding path program 1 times [2023-11-29 00:30:19,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:19,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416705661] [2023-11-29 00:30:19,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:19,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:20,885 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:30:20,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [634219501] [2023-11-29 00:30:20,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:20,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:30:20,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:30:20,888 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:30:20,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 00:30:34,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:30:35,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 45890 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 00:30:35,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:30:36,723 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 34 proven. 679 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-29 00:30:36,723 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:30:37,245 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2023-11-29 00:30:37,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:30:37,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416705661] [2023-11-29 00:30:37,246 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:30:37,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634219501] [2023-11-29 00:30:37,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634219501] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:30:37,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:30:37,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-29 00:30:37,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624306047] [2023-11-29 00:30:37,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:30:37,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:30:37,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:30:37,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:30:37,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:30:37,265 INFO L87 Difference]: Start difference. First operand 13633 states and 22699 transitions. Second operand has 5 states, 5 states have (on average 1638.4) internal successors, (8192), 5 states have internal predecessors, (8192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:57,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:30:57,763 INFO L93 Difference]: Finished difference Result 47578 states and 78803 transitions. [2023-11-29 00:30:57,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:30:57,765 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1638.4) internal successors, (8192), 5 states have internal predecessors, (8192), 0 states have call successors, (0), 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 9077 [2023-11-29 00:30:57,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:30:57,792 INFO L225 Difference]: With dead ends: 47578 [2023-11-29 00:30:57,792 INFO L226 Difference]: Without dead ends: 25314 [2023-11-29 00:30:57,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18153 GetRequests, 18144 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:30:57,804 INFO L413 NwaCegarLoop]: 32233 mSDtfsCounter, 35206 mSDsluCounter, 48874 mSDsCounter, 0 mSdLazyCounter, 22835 mSolverCounterSat, 1225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35206 SdHoareTripleChecker+Valid, 81107 SdHoareTripleChecker+Invalid, 24060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 1225 IncrementalHoareTripleChecker+Valid, 22835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:30:57,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35206 Valid, 81107 Invalid, 24060 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [1225 Valid, 22835 Invalid, 0 Unknown, 0 Unchecked, 19.5s Time] [2023-11-29 00:30:57,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25314 states. [2023-11-29 00:30:57,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25314 to 13635. [2023-11-29 00:30:57,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13635 states, 13634 states have (on average 1.6650286049581928) internal successors, (22701), 13634 states have internal predecessors, (22701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:58,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13635 states to 13635 states and 22701 transitions. [2023-11-29 00:30:58,017 INFO L78 Accepts]: Start accepts. Automaton has 13635 states and 22701 transitions. Word has length 9077 [2023-11-29 00:30:58,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:30:58,022 INFO L495 AbstractCegarLoop]: Abstraction has 13635 states and 22701 transitions. [2023-11-29 00:30:58,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1638.4) internal successors, (8192), 5 states have internal predecessors, (8192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:30:58,024 INFO L276 IsEmpty]: Start isEmpty. Operand 13635 states and 22701 transitions. [2023-11-29 00:30:58,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9079 [2023-11-29 00:30:58,440 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:30:58,442 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:30:58,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 00:30:58,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 00:30:58,643 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:30:58,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:30:58,647 INFO L85 PathProgramCache]: Analyzing trace with hash 785776300, now seen corresponding path program 1 times [2023-11-29 00:30:58,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:30:58,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727836300] [2023-11-29 00:30:58,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:58,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:30:59,662 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:30:59,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [315276452] [2023-11-29 00:30:59,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:30:59,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:30:59,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:30:59,665 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:30:59,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 00:31:13,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:31:14,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 45893 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 00:31:14,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:31:15,667 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 36 proven. 679 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2023-11-29 00:31:15,668 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:31:15,873 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 884 trivial. 0 not checked. [2023-11-29 00:31:15,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:31:15,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727836300] [2023-11-29 00:31:15,873 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:31:15,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315276452] [2023-11-29 00:31:15,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315276452] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:31:15,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:31:15,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-29 00:31:15,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506883058] [2023-11-29 00:31:15,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:31:15,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:31:15,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:31:15,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:31:15,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:31:15,890 INFO L87 Difference]: Start difference. First operand 13635 states and 22701 transitions. Second operand has 5 states, 5 states have (on average 1639.0) internal successors, (8195), 5 states have internal predecessors, (8195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:31:33,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:31:33,708 INFO L93 Difference]: Finished difference Result 47586 states and 78811 transitions. [2023-11-29 00:31:33,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:31:33,710 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1639.0) internal successors, (8195), 5 states have internal predecessors, (8195), 0 states have call successors, (0), 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 9078 [2023-11-29 00:31:33,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:31:33,735 INFO L225 Difference]: With dead ends: 47586 [2023-11-29 00:31:33,735 INFO L226 Difference]: Without dead ends: 25315 [2023-11-29 00:31:33,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18155 GetRequests, 18146 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:31:33,745 INFO L413 NwaCegarLoop]: 32225 mSDtfsCounter, 35200 mSDsluCounter, 48864 mSDsCounter, 0 mSdLazyCounter, 22835 mSolverCounterSat, 1225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35200 SdHoareTripleChecker+Valid, 81089 SdHoareTripleChecker+Invalid, 24060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1225 IncrementalHoareTripleChecker+Valid, 22835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:31:33,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35200 Valid, 81089 Invalid, 24060 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1225 Valid, 22835 Invalid, 0 Unknown, 0 Unchecked, 17.0s Time] [2023-11-29 00:31:33,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25315 states. [2023-11-29 00:31:33,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25315 to 13637. [2023-11-29 00:31:33,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13637 states, 13636 states have (on average 1.6649310648283955) internal successors, (22703), 13636 states have internal predecessors, (22703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:31:33,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13637 states to 13637 states and 22703 transitions. [2023-11-29 00:31:33,930 INFO L78 Accepts]: Start accepts. Automaton has 13637 states and 22703 transitions. Word has length 9078 [2023-11-29 00:31:33,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:31:33,935 INFO L495 AbstractCegarLoop]: Abstraction has 13637 states and 22703 transitions. [2023-11-29 00:31:33,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1639.0) internal successors, (8195), 5 states have internal predecessors, (8195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:31:33,936 INFO L276 IsEmpty]: Start isEmpty. Operand 13637 states and 22703 transitions. [2023-11-29 00:31:34,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9080 [2023-11-29 00:31:34,263 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:31:34,266 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:31:34,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 00:31:34,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:31:34,467 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:31:34,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:31:34,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1473066990, now seen corresponding path program 1 times [2023-11-29 00:31:34,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:31:34,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349346958] [2023-11-29 00:31:34,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:31:34,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:31:35,389 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:31:35,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1687229377] [2023-11-29 00:31:35,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:31:35,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:31:35,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:31:35,392 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:31:35,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 00:31:47,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:31:48,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 45896 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 00:31:48,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:31:49,272 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 38 proven. 679 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2023-11-29 00:31:49,272 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:31:49,712 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2023-11-29 00:31:49,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:31:49,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349346958] [2023-11-29 00:31:49,713 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:31:49,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687229377] [2023-11-29 00:31:49,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687229377] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:31:49,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:31:49,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-29 00:31:49,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970315951] [2023-11-29 00:31:49,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:31:49,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:31:49,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:31:49,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:31:49,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:31:49,733 INFO L87 Difference]: Start difference. First operand 13637 states and 22703 transitions. Second operand has 5 states, 5 states have (on average 1639.6) internal successors, (8198), 5 states have internal predecessors, (8198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:04,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:32:04,722 INFO L93 Difference]: Finished difference Result 47594 states and 78819 transitions. [2023-11-29 00:32:04,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:32:04,724 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1639.6) internal successors, (8198), 5 states have internal predecessors, (8198), 0 states have call successors, (0), 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 9079 [2023-11-29 00:32:04,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:32:04,752 INFO L225 Difference]: With dead ends: 47594 [2023-11-29 00:32:04,752 INFO L226 Difference]: Without dead ends: 25316 [2023-11-29 00:32:04,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18157 GetRequests, 18148 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:32:04,765 INFO L413 NwaCegarLoop]: 32217 mSDtfsCounter, 50953 mSDsluCounter, 32048 mSDsCounter, 0 mSdLazyCounter, 17055 mSolverCounterSat, 1225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50953 SdHoareTripleChecker+Valid, 64265 SdHoareTripleChecker+Invalid, 18280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1225 IncrementalHoareTripleChecker+Valid, 17055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:32:04,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50953 Valid, 64265 Invalid, 18280 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1225 Valid, 17055 Invalid, 0 Unknown, 0 Unchecked, 14.2s Time] [2023-11-29 00:32:04,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25316 states. [2023-11-29 00:32:04,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25316 to 13639. [2023-11-29 00:32:04,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13639 states, 13638 states have (on average 1.6648335533069365) internal successors, (22705), 13638 states have internal predecessors, (22705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:04,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13639 states to 13639 states and 22705 transitions. [2023-11-29 00:32:04,969 INFO L78 Accepts]: Start accepts. Automaton has 13639 states and 22705 transitions. Word has length 9079 [2023-11-29 00:32:04,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:32:04,974 INFO L495 AbstractCegarLoop]: Abstraction has 13639 states and 22705 transitions. [2023-11-29 00:32:04,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1639.6) internal successors, (8198), 5 states have internal predecessors, (8198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:04,976 INFO L276 IsEmpty]: Start isEmpty. Operand 13639 states and 22705 transitions. [2023-11-29 00:32:05,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9081 [2023-11-29 00:32:05,437 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:32:05,438 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:32:05,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 00:32:05,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:32:05,639 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:32:05,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:05,642 INFO L85 PathProgramCache]: Analyzing trace with hash 2038470802, now seen corresponding path program 1 times [2023-11-29 00:32:05,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:32:05,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554258782] [2023-11-29 00:32:05,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:05,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:32:06,533 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:32:06,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1522780752] [2023-11-29 00:32:06,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:06,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:32:06,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:32:06,536 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:32:06,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 00:32:18,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:32:19,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 45899 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 00:32:19,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:32:20,187 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 40 proven. 679 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2023-11-29 00:32:20,187 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:32:20,380 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 880 trivial. 0 not checked. [2023-11-29 00:32:20,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:32:20,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554258782] [2023-11-29 00:32:20,380 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:32:20,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522780752] [2023-11-29 00:32:20,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522780752] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:32:20,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:32:20,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-29 00:32:20,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314073953] [2023-11-29 00:32:20,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:32:20,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:32:20,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:32:20,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:32:20,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:32:20,396 INFO L87 Difference]: Start difference. First operand 13639 states and 22705 transitions. Second operand has 5 states, 5 states have (on average 1640.2) internal successors, (8201), 5 states have internal predecessors, (8201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:37,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:32:37,128 INFO L93 Difference]: Finished difference Result 47602 states and 78827 transitions. [2023-11-29 00:32:37,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:32:37,130 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1640.2) internal successors, (8201), 5 states have internal predecessors, (8201), 0 states have call successors, (0), 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 9080 [2023-11-29 00:32:37,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:32:37,154 INFO L225 Difference]: With dead ends: 47602 [2023-11-29 00:32:37,155 INFO L226 Difference]: Without dead ends: 25317 [2023-11-29 00:32:37,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18159 GetRequests, 18150 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:32:37,168 INFO L413 NwaCegarLoop]: 32209 mSDtfsCounter, 35206 mSDsluCounter, 46570 mSDsCounter, 0 mSdLazyCounter, 21959 mSolverCounterSat, 1225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35206 SdHoareTripleChecker+Valid, 78779 SdHoareTripleChecker+Invalid, 23184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1225 IncrementalHoareTripleChecker+Valid, 21959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:32:37,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35206 Valid, 78779 Invalid, 23184 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1225 Valid, 21959 Invalid, 0 Unknown, 0 Unchecked, 16.0s Time] [2023-11-29 00:32:37,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25317 states. [2023-11-29 00:32:37,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25317 to 13641. [2023-11-29 00:32:37,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13641 states, 13640 states have (on average 1.6647360703812317) internal successors, (22707), 13640 states have internal predecessors, (22707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:37,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13641 states to 13641 states and 22707 transitions. [2023-11-29 00:32:37,347 INFO L78 Accepts]: Start accepts. Automaton has 13641 states and 22707 transitions. Word has length 9080 [2023-11-29 00:32:37,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:32:37,352 INFO L495 AbstractCegarLoop]: Abstraction has 13641 states and 22707 transitions. [2023-11-29 00:32:37,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1640.2) internal successors, (8201), 5 states have internal predecessors, (8201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:32:37,353 INFO L276 IsEmpty]: Start isEmpty. Operand 13641 states and 22707 transitions. [2023-11-29 00:32:37,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9082 [2023-11-29 00:32:37,705 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:32:37,707 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:32:37,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 00:32:37,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:32:37,908 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:32:37,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:32:37,910 INFO L85 PathProgramCache]: Analyzing trace with hash -802491894, now seen corresponding path program 1 times [2023-11-29 00:32:37,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:32:37,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076119883] [2023-11-29 00:32:37,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:37,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:32:38,721 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:32:38,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1419747943] [2023-11-29 00:32:38,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:32:38,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:32:38,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:32:38,724 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:32:38,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 00:32:50,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:32:50,818 INFO L262 TraceCheckSpWp]: Trace formula consists of 45903 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 00:32:50,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:32:51,904 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 42 proven. 679 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2023-11-29 00:32:51,904 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:32:52,085 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 878 trivial. 0 not checked. [2023-11-29 00:32:52,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:32:52,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076119883] [2023-11-29 00:32:52,086 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:32:52,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419747943] [2023-11-29 00:32:52,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419747943] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:32:52,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:32:52,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-29 00:32:52,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212472682] [2023-11-29 00:32:52,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:32:52,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:32:52,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:32:52,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:32:52,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:32:52,099 INFO L87 Difference]: Start difference. First operand 13641 states and 22707 transitions. Second operand has 5 states, 5 states have (on average 1640.8) internal successors, (8204), 5 states have internal predecessors, (8204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:33:08,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:33:08,743 INFO L93 Difference]: Finished difference Result 47610 states and 78835 transitions. [2023-11-29 00:33:08,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:33:08,744 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1640.8) internal successors, (8204), 5 states have internal predecessors, (8204), 0 states have call successors, (0), 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 9081 [2023-11-29 00:33:08,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:33:08,766 INFO L225 Difference]: With dead ends: 47610 [2023-11-29 00:33:08,766 INFO L226 Difference]: Without dead ends: 25318 [2023-11-29 00:33:08,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18161 GetRequests, 18152 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:33:08,776 INFO L413 NwaCegarLoop]: 32201 mSDtfsCounter, 35201 mSDsluCounter, 46562 mSDsCounter, 0 mSdLazyCounter, 21959 mSolverCounterSat, 1225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35201 SdHoareTripleChecker+Valid, 78763 SdHoareTripleChecker+Invalid, 23184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1225 IncrementalHoareTripleChecker+Valid, 21959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2023-11-29 00:33:08,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35201 Valid, 78763 Invalid, 23184 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1225 Valid, 21959 Invalid, 0 Unknown, 0 Unchecked, 15.9s Time] [2023-11-29 00:33:08,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25318 states. [2023-11-29 00:33:08,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25318 to 13643. [2023-11-29 00:33:08,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13643 states, 13642 states have (on average 1.664638616038704) internal successors, (22709), 13642 states have internal predecessors, (22709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:33:08,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13643 states to 13643 states and 22709 transitions. [2023-11-29 00:33:08,947 INFO L78 Accepts]: Start accepts. Automaton has 13643 states and 22709 transitions. Word has length 9081 [2023-11-29 00:33:08,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:33:08,951 INFO L495 AbstractCegarLoop]: Abstraction has 13643 states and 22709 transitions. [2023-11-29 00:33:08,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1640.8) internal successors, (8204), 5 states have internal predecessors, (8204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:33:08,953 INFO L276 IsEmpty]: Start isEmpty. Operand 13643 states and 22709 transitions. [2023-11-29 00:33:09,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9083 [2023-11-29 00:33:09,296 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:33:09,297 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:33:09,416 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 00:33:09,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:33:09,498 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:33:09,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:33:09,500 INFO L85 PathProgramCache]: Analyzing trace with hash 558105978, now seen corresponding path program 1 times [2023-11-29 00:33:09,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:33:09,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683137274] [2023-11-29 00:33:09,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:33:09,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:33:10,309 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:33:10,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1214691103] [2023-11-29 00:33:10,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:33:10,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:33:10,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:33:10,312 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:33:10,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 00:33:21,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:22,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 45906 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 00:33:22,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:33:23,468 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 44 proven. 679 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2023-11-29 00:33:23,469 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:33:23,665 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2023-11-29 00:33:23,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:33:23,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683137274] [2023-11-29 00:33:23,666 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:33:23,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214691103] [2023-11-29 00:33:23,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214691103] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:33:23,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:33:23,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-29 00:33:23,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72438839] [2023-11-29 00:33:23,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:33:23,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:33:23,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:33:23,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:33:23,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:33:23,680 INFO L87 Difference]: Start difference. First operand 13643 states and 22709 transitions. Second operand has 5 states, 5 states have (on average 1641.4) internal successors, (8207), 5 states have internal predecessors, (8207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:33:40,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:33:40,644 INFO L93 Difference]: Finished difference Result 47618 states and 78843 transitions. [2023-11-29 00:33:40,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:33:40,645 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1641.4) internal successors, (8207), 5 states have internal predecessors, (8207), 0 states have call successors, (0), 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 9082 [2023-11-29 00:33:40,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:33:40,665 INFO L225 Difference]: With dead ends: 47618 [2023-11-29 00:33:40,665 INFO L226 Difference]: Without dead ends: 25319 [2023-11-29 00:33:40,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18163 GetRequests, 18154 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:33:40,673 INFO L413 NwaCegarLoop]: 32193 mSDtfsCounter, 35176 mSDsluCounter, 48824 mSDsCounter, 0 mSdLazyCounter, 22835 mSolverCounterSat, 1225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35176 SdHoareTripleChecker+Valid, 81017 SdHoareTripleChecker+Invalid, 24060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1225 IncrementalHoareTripleChecker+Valid, 22835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:33:40,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35176 Valid, 81017 Invalid, 24060 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1225 Valid, 22835 Invalid, 0 Unknown, 0 Unchecked, 16.2s Time] [2023-11-29 00:33:40,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25319 states. [2023-11-29 00:33:40,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25319 to 13645. [2023-11-29 00:33:40,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13645 states, 13644 states have (on average 1.664541190266784) internal successors, (22711), 13644 states have internal predecessors, (22711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:33:40,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13645 states to 13645 states and 22711 transitions. [2023-11-29 00:33:40,850 INFO L78 Accepts]: Start accepts. Automaton has 13645 states and 22711 transitions. Word has length 9082 [2023-11-29 00:33:40,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:33:40,855 INFO L495 AbstractCegarLoop]: Abstraction has 13645 states and 22711 transitions. [2023-11-29 00:33:40,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1641.4) internal successors, (8207), 5 states have internal predecessors, (8207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:33:40,857 INFO L276 IsEmpty]: Start isEmpty. Operand 13645 states and 22711 transitions. [2023-11-29 00:33:41,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9084 [2023-11-29 00:33:41,180 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:33:41,182 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:33:41,301 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 00:33:41,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:33:41,383 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:33:41,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:33:41,384 INFO L85 PathProgramCache]: Analyzing trace with hash 628648228, now seen corresponding path program 1 times [2023-11-29 00:33:41,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:33:41,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62752669] [2023-11-29 00:33:41,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:33:41,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:33:42,196 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:33:42,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1814922240] [2023-11-29 00:33:42,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:33:42,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:33:42,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:33:42,199 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:33:42,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 00:33:54,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:33:54,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 45909 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 00:33:54,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:33:55,433 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 46 proven. 679 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2023-11-29 00:33:55,433 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:33:55,619 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 874 trivial. 0 not checked. [2023-11-29 00:33:55,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:33:55,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62752669] [2023-11-29 00:33:55,619 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:33:55,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814922240] [2023-11-29 00:33:55,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814922240] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:33:55,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:33:55,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-29 00:33:55,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233247881] [2023-11-29 00:33:55,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:33:55,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:33:55,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:33:55,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:33:55,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:33:55,738 INFO L87 Difference]: Start difference. First operand 13645 states and 22711 transitions. Second operand has 5 states, 5 states have (on average 1642.0) internal successors, (8210), 5 states have internal predecessors, (8210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:34:10,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:34:10,306 INFO L93 Difference]: Finished difference Result 47626 states and 78851 transitions. [2023-11-29 00:34:10,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:34:10,307 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1642.0) internal successors, (8210), 5 states have internal predecessors, (8210), 0 states have call successors, (0), 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 9083 [2023-11-29 00:34:10,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:34:10,332 INFO L225 Difference]: With dead ends: 47626 [2023-11-29 00:34:10,332 INFO L226 Difference]: Without dead ends: 25320 [2023-11-29 00:34:10,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18165 GetRequests, 18156 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:34:10,345 INFO L413 NwaCegarLoop]: 32185 mSDtfsCounter, 50938 mSDsluCounter, 32027 mSDsCounter, 0 mSdLazyCounter, 17055 mSolverCounterSat, 1225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50938 SdHoareTripleChecker+Valid, 64212 SdHoareTripleChecker+Invalid, 18280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1225 IncrementalHoareTripleChecker+Valid, 17055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2023-11-29 00:34:10,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50938 Valid, 64212 Invalid, 18280 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1225 Valid, 17055 Invalid, 0 Unknown, 0 Unchecked, 13.9s Time] [2023-11-29 00:34:10,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25320 states. [2023-11-29 00:34:10,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25320 to 13647. [2023-11-29 00:34:10,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13647 states, 13646 states have (on average 1.6644437930529092) internal successors, (22713), 13646 states have internal predecessors, (22713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:34:10,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13647 states to 13647 states and 22713 transitions. [2023-11-29 00:34:10,524 INFO L78 Accepts]: Start accepts. Automaton has 13647 states and 22713 transitions. Word has length 9083 [2023-11-29 00:34:10,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:34:10,528 INFO L495 AbstractCegarLoop]: Abstraction has 13647 states and 22713 transitions. [2023-11-29 00:34:10,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1642.0) internal successors, (8210), 5 states have internal predecessors, (8210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:34:10,530 INFO L276 IsEmpty]: Start isEmpty. Operand 13647 states and 22713 transitions. [2023-11-29 00:34:10,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9085 [2023-11-29 00:34:10,930 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:34:10,932 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:34:11,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 00:34:11,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:34:11,133 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:34:11,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:34:11,135 INFO L85 PathProgramCache]: Analyzing trace with hash -974609568, now seen corresponding path program 1 times [2023-11-29 00:34:11,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:34:11,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605943661] [2023-11-29 00:34:11,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:34:11,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:34:11,947 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:34:11,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1903059797] [2023-11-29 00:34:11,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:34:11,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:34:11,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:34:11,950 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:34:11,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 00:34:23,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:34:23,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 45912 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 00:34:23,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:34:24,868 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 48 proven. 679 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2023-11-29 00:34:24,868 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:34:25,088 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 872 trivial. 0 not checked. [2023-11-29 00:34:25,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:34:25,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605943661] [2023-11-29 00:34:25,088 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:34:25,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903059797] [2023-11-29 00:34:25,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903059797] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:34:25,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:34:25,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-11-29 00:34:25,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069539703] [2023-11-29 00:34:25,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:34:25,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:34:25,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:34:25,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:34:25,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:34:25,103 INFO L87 Difference]: Start difference. First operand 13647 states and 22713 transitions. Second operand has 6 states, 6 states have (on average 1368.8333333333333) internal successors, (8213), 6 states have internal predecessors, (8213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:34:56,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:34:56,400 INFO L93 Difference]: Finished difference Result 59432 states and 98491 transitions. [2023-11-29 00:34:56,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:34:56,402 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1368.8333333333333) internal successors, (8213), 6 states have internal predecessors, (8213), 0 states have call successors, (0), 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 9084 [2023-11-29 00:34:56,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:34:56,431 INFO L225 Difference]: With dead ends: 59432 [2023-11-29 00:34:56,431 INFO L226 Difference]: Without dead ends: 37119 [2023-11-29 00:34:56,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18168 GetRequests, 18156 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:34:56,444 INFO L413 NwaCegarLoop]: 32179 mSDtfsCounter, 54650 mSDsluCounter, 109327 mSDsCounter, 0 mSdLazyCounter, 47013 mSolverCounterSat, 1227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54650 SdHoareTripleChecker+Valid, 141506 SdHoareTripleChecker+Invalid, 48240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 1227 IncrementalHoareTripleChecker+Valid, 47013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.9s IncrementalHoareTripleChecker+Time [2023-11-29 00:34:56,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54650 Valid, 141506 Invalid, 48240 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [1227 Valid, 47013 Invalid, 0 Unknown, 0 Unchecked, 29.9s Time] [2023-11-29 00:34:56,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37119 states. [2023-11-29 00:34:56,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37119 to 13649. [2023-11-29 00:34:56,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13649 states, 13648 states have (on average 1.6643464243845252) internal successors, (22715), 13648 states have internal predecessors, (22715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:34:56,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13649 states to 13649 states and 22715 transitions. [2023-11-29 00:34:56,658 INFO L78 Accepts]: Start accepts. Automaton has 13649 states and 22715 transitions. Word has length 9084 [2023-11-29 00:34:56,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:34:56,663 INFO L495 AbstractCegarLoop]: Abstraction has 13649 states and 22715 transitions. [2023-11-29 00:34:56,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1368.8333333333333) internal successors, (8213), 6 states have internal predecessors, (8213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:34:56,664 INFO L276 IsEmpty]: Start isEmpty. Operand 13649 states and 22715 transitions. [2023-11-29 00:34:57,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9086 [2023-11-29 00:34:57,009 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:34:57,011 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:34:57,131 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 00:34:57,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 00:34:57,212 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:34:57,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:34:57,215 INFO L85 PathProgramCache]: Analyzing trace with hash -554054592, now seen corresponding path program 1 times [2023-11-29 00:34:57,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:34:57,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112213800] [2023-11-29 00:34:57,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:34:57,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:34:58,128 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:34:58,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [704612730] [2023-11-29 00:34:58,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:34:58,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:34:58,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:34:58,131 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:34:58,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5340ce45-925d-47e0-a5cf-deb55b33421f/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 00:35:09,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:35:10,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 45916 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 00:35:10,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:35:11,301 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 50 proven. 679 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2023-11-29 00:35:11,301 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:35:11,723 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2023-11-29 00:35:11,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:35:11,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112213800] [2023-11-29 00:35:11,723 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:35:11,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704612730] [2023-11-29 00:35:11,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704612730] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:35:11,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:35:11,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-29 00:35:11,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524417168] [2023-11-29 00:35:11,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:35:11,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:35:11,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:35:11,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:35:11,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:35:11,738 INFO L87 Difference]: Start difference. First operand 13649 states and 22715 transitions. Second operand has 5 states, 5 states have (on average 1643.2) internal successors, (8216), 5 states have internal predecessors, (8216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:35:26,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:35:26,380 INFO L93 Difference]: Finished difference Result 47642 states and 78867 transitions. [2023-11-29 00:35:26,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:35:26,382 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1643.2) internal successors, (8216), 5 states have internal predecessors, (8216), 0 states have call successors, (0), 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 9085 [2023-11-29 00:35:26,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:35:26,407 INFO L225 Difference]: With dead ends: 47642 [2023-11-29 00:35:26,407 INFO L226 Difference]: Without dead ends: 25322 [2023-11-29 00:35:26,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18169 GetRequests, 18160 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:35:26,420 INFO L413 NwaCegarLoop]: 32169 mSDtfsCounter, 50922 mSDsluCounter, 32017 mSDsCounter, 0 mSdLazyCounter, 17055 mSolverCounterSat, 1225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50922 SdHoareTripleChecker+Valid, 64186 SdHoareTripleChecker+Invalid, 18280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1225 IncrementalHoareTripleChecker+Valid, 17055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2023-11-29 00:35:26,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50922 Valid, 64186 Invalid, 18280 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1225 Valid, 17055 Invalid, 0 Unknown, 0 Unchecked, 13.9s Time] [2023-11-29 00:35:26,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25322 states. [2023-11-29 00:35:26,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25322 to 13651. [2023-11-29 00:35:26,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13651 states, 13650 states have (on average 1.6642490842490842) internal successors, (22717), 13650 states have internal predecessors, (22717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:35:26,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13651 states to 13651 states and 22717 transitions. [2023-11-29 00:35:26,602 INFO L78 Accepts]: Start accepts. Automaton has 13651 states and 22717 transitions. Word has length 9085 [2023-11-29 00:35:26,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:35:26,607 INFO L495 AbstractCegarLoop]: Abstraction has 13651 states and 22717 transitions. [2023-11-29 00:35:26,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1643.2) internal successors, (8216), 5 states have internal predecessors, (8216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:35:26,608 INFO L276 IsEmpty]: Start isEmpty. Operand 13651 states and 22717 transitions. [2023-11-29 00:35:27,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9087 [2023-11-29 00:35:27,062 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:35:27,063 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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