./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/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_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/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 32bit --witnessprinter.graph.data.programhash 058bf7bb7159fc58d1639895d555a49cdf382897b3dae93686af695cfade8af2 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:57:05,174 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:57:05,240 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 01:57:05,244 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:57:05,245 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:57:05,269 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:57:05,269 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:57:05,270 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:57:05,270 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:57:05,271 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:57:05,272 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:57:05,272 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:57:05,273 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:57:05,273 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:57:05,274 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:57:05,274 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:57:05,275 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:57:05,275 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:57:05,276 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:57:05,276 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:57:05,276 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:57:05,277 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:57:05,277 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:57:05,278 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:57:05,278 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:57:05,279 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:57:05,279 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:57:05,279 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:57:05,280 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:57:05,280 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:57:05,280 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:57:05,281 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:57:05,292 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:57:05,292 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:57:05,292 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:57:05,293 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:57:05,293 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:57:05,293 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:57:05,293 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:57:05,293 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:57:05,294 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:57:05,294 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:57:05,294 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_8d99ae08-afdb-46a8-be35-bed217fc86cb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 058bf7bb7159fc58d1639895d555a49cdf382897b3dae93686af695cfade8af2 [2023-11-29 01:57:05,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:57:05,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:57:05,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:57:05,545 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:57:05,545 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:57:05,546 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-11-29 01:57:08,301 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:57:08,742 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:57:08,743 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-11-29 01:57:08,783 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/data/84db2c7f8/4d17daef5f5646b891466b9ddf2b0f5f/FLAG24b4aab62 [2023-11-29 01:57:08,798 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/data/84db2c7f8/4d17daef5f5646b891466b9ddf2b0f5f [2023-11-29 01:57:08,801 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:57:08,802 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:57:08,804 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:57:08,804 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:57:08,809 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:57:08,810 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:57:08" (1/1) ... [2023-11-29 01:57:08,811 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d22d757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:57:08, skipping insertion in model container [2023-11-29 01:57:08,811 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:57:08" (1/1) ... [2023-11-29 01:57:08,938 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:57:09,271 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_8d99ae08-afdb-46a8-be35-bed217fc86cb/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label05.c[20454,20467] [2023-11-29 01:57:09,318 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_8d99ae08-afdb-46a8-be35-bed217fc86cb/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label05.c[27390,27403] [2023-11-29 01:57:09,972 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:57:09,986 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:57:10,027 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_8d99ae08-afdb-46a8-be35-bed217fc86cb/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label05.c[20454,20467] [2023-11-29 01:57:10,039 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_8d99ae08-afdb-46a8-be35-bed217fc86cb/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label05.c[27390,27403] [2023-11-29 01:57:10,599 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:57:10,630 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:57:10,630 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:57:10 WrapperNode [2023-11-29 01:57:10,630 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:57:10,631 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:57:10,631 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:57:10,632 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:57:10,639 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:57:10" (1/1) ... [2023-11-29 01:57:10,682 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:57:10" (1/1) ... [2023-11-29 01:57:10,985 INFO L138 Inliner]: procedures = 39, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5211 [2023-11-29 01:57:10,985 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:57:10,986 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:57:10,986 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:57:10,986 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:57:10,997 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:57:10" (1/1) ... [2023-11-29 01:57:10,998 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:57:10" (1/1) ... [2023-11-29 01:57:11,063 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:57:10" (1/1) ... [2023-11-29 01:57:11,194 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 01:57:11,194 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:57:10" (1/1) ... [2023-11-29 01:57:11,195 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:57:10" (1/1) ... [2023-11-29 01:57:11,306 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:57:10" (1/1) ... [2023-11-29 01:57:11,329 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:57:10" (1/1) ... [2023-11-29 01:57:11,344 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:57:10" (1/1) ... [2023-11-29 01:57:11,357 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:57:10" (1/1) ... [2023-11-29 01:57:11,404 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:57:11,405 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:57:11,405 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:57:11,406 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:57:11,406 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:57:10" (1/1) ... [2023-11-29 01:57:11,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:57:11,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:57:11,432 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:57:11,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:57:11,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:57:11,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:57:11,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:57:11,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:57:11,560 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:57:11,562 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:57:16,141 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:57:16,208 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:57:16,209 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 01:57:16,210 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:57:16 BoogieIcfgContainer [2023-11-29 01:57:16,210 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:57:16,213 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:57:16,213 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:57:16,217 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:57:16,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:57:08" (1/3) ... [2023-11-29 01:57:16,218 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2772eba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:57:16, skipping insertion in model container [2023-11-29 01:57:16,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:57:10" (2/3) ... [2023-11-29 01:57:16,218 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2772eba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:57:16, skipping insertion in model container [2023-11-29 01:57:16,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:57:16" (3/3) ... [2023-11-29 01:57:16,220 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label05.c [2023-11-29 01:57:16,240 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:57:16,240 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 01:57:16,317 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:57:16,325 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;@3d1cd3b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:57:16,325 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-29 01:57:16,335 INFO L276 IsEmpty]: Start isEmpty. Operand has 867 states, 864 states have (on average 1.9710648148148149) internal successors, (1703), 866 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states 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 01:57:16,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 01:57:16,345 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:16,346 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] [2023-11-29 01:57:16,347 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:16,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:16,353 INFO L85 PathProgramCache]: Analyzing trace with hash -2003734705, now seen corresponding path program 1 times [2023-11-29 01:57:16,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:16,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666660843] [2023-11-29 01:57:16,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:16,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:16,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:16,591 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 01:57:16,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:16,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666660843] [2023-11-29 01:57:16,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666660843] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:57:16,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:57:16,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:57:16,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231429291] [2023-11-29 01:57:16,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:16,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 01:57:16,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:16,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 01:57:16,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:57:16,634 INFO L87 Difference]: Start difference. First operand has 867 states, 864 states have (on average 1.9710648148148149) internal successors, (1703), 866 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states 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 01:57:16,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:16,727 INFO L93 Difference]: Finished difference Result 1679 states and 3299 transitions. [2023-11-29 01:57:16,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 01:57:16,729 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2023-11-29 01:57:16,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:16,749 INFO L225 Difference]: With dead ends: 1679 [2023-11-29 01:57:16,749 INFO L226 Difference]: Without dead ends: 863 [2023-11-29 01:57:16,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:57:16,759 INFO L413 NwaCegarLoop]: 1631 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:16,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1631 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:57:16,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2023-11-29 01:57:16,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 863. [2023-11-29 01:57:16,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863 states, 861 states have (on average 1.8954703832752613) internal successors, (1632), 862 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states 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 01:57:16,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1632 transitions. [2023-11-29 01:57:16,840 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1632 transitions. Word has length 25 [2023-11-29 01:57:16,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:16,840 INFO L495 AbstractCegarLoop]: Abstraction has 863 states and 1632 transitions. [2023-11-29 01:57:16,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states 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 01:57:16,841 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1632 transitions. [2023-11-29 01:57:16,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 01:57:16,842 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:16,843 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] [2023-11-29 01:57:16,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:57:16,843 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:16,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:16,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1581032879, now seen corresponding path program 1 times [2023-11-29 01:57:16,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:16,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732016537] [2023-11-29 01:57:16,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:16,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:16,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:17,187 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 01:57:17,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:17,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732016537] [2023-11-29 01:57:17,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732016537] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:57:17,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:57:17,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:57:17,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33594018] [2023-11-29 01:57:17,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:17,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:57:17,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:17,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:57:17,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:57:17,191 INFO L87 Difference]: Start difference. First operand 863 states and 1632 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states 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 01:57:17,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:17,312 INFO L93 Difference]: Finished difference Result 921 states and 1724 transitions. [2023-11-29 01:57:17,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:57:17,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2023-11-29 01:57:17,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:17,319 INFO L225 Difference]: With dead ends: 921 [2023-11-29 01:57:17,319 INFO L226 Difference]: Without dead ends: 863 [2023-11-29 01:57:17,320 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 01:57:17,321 INFO L413 NwaCegarLoop]: 1629 mSDtfsCounter, 0 mSDsluCounter, 3204 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4833 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:17,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4833 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:57:17,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2023-11-29 01:57:17,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 863. [2023-11-29 01:57:17,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863 states, 861 states have (on average 1.8373983739837398) internal successors, (1582), 862 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states 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 01:57:17,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1582 transitions. [2023-11-29 01:57:17,348 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1582 transitions. Word has length 25 [2023-11-29 01:57:17,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:17,349 INFO L495 AbstractCegarLoop]: Abstraction has 863 states and 1582 transitions. [2023-11-29 01:57:17,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states 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 01:57:17,349 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1582 transitions. [2023-11-29 01:57:17,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-29 01:57:17,351 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:17,351 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] [2023-11-29 01:57:17,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:57:17,352 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:17,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:17,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1720831264, now seen corresponding path program 1 times [2023-11-29 01:57:17,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:17,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287355932] [2023-11-29 01:57:17,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:17,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:17,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:17,583 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 01:57:17,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:17,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287355932] [2023-11-29 01:57:17,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287355932] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:57:17,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:57:17,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:57:17,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479894938] [2023-11-29 01:57:17,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:17,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:57:17,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:17,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:57:17,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:57:17,586 INFO L87 Difference]: Start difference. First operand 863 states and 1582 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 01:57:23,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:23,988 INFO L93 Difference]: Finished difference Result 3118 states and 5891 transitions. [2023-11-29 01:57:23,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:57:23,988 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-11-29 01:57:23,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:24,000 INFO L225 Difference]: With dead ends: 3118 [2023-11-29 01:57:24,000 INFO L226 Difference]: Without dead ends: 2365 [2023-11-29 01:57:24,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:57:24,003 INFO L413 NwaCegarLoop]: 815 mSDtfsCounter, 2480 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5357 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2480 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 6510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:24,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2480 Valid, 833 Invalid, 6510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5357 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-11-29 01:57:24,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2023-11-29 01:57:24,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 2365. [2023-11-29 01:57:24,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2365 states, 2363 states have (on average 1.5641134151502327) internal successors, (3696), 2364 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states 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 01:57:24,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2365 states to 2365 states and 3696 transitions. [2023-11-29 01:57:24,074 INFO L78 Accepts]: Start accepts. Automaton has 2365 states and 3696 transitions. Word has length 59 [2023-11-29 01:57:24,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:24,075 INFO L495 AbstractCegarLoop]: Abstraction has 2365 states and 3696 transitions. [2023-11-29 01:57:24,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 01:57:24,076 INFO L276 IsEmpty]: Start isEmpty. Operand 2365 states and 3696 transitions. [2023-11-29 01:57:24,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-29 01:57:24,078 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:24,078 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] [2023-11-29 01:57:24,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 01:57:24,079 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:24,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:24,079 INFO L85 PathProgramCache]: Analyzing trace with hash -363781862, now seen corresponding path program 1 times [2023-11-29 01:57:24,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:24,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817981251] [2023-11-29 01:57:24,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:24,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:24,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:24,293 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 01:57:24,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:24,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817981251] [2023-11-29 01:57:24,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817981251] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:57:24,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:57:24,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 01:57:24,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373427758] [2023-11-29 01:57:24,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:24,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:57:24,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:24,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:57:24,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:57:24,296 INFO L87 Difference]: Start difference. First operand 2365 states and 3696 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:57:24,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:24,744 INFO L93 Difference]: Finished difference Result 3135 states and 4942 transitions. [2023-11-29 01:57:24,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:57:24,745 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-11-29 01:57:24,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:24,762 INFO L225 Difference]: With dead ends: 3135 [2023-11-29 01:57:24,762 INFO L226 Difference]: Without dead ends: 3080 [2023-11-29 01:57:24,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2023-11-29 01:57:24,765 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 11585 mSDsluCounter, 2680 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11585 SdHoareTripleChecker+Valid, 4253 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:24,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11585 Valid, 4253 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:57:24,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3080 states. [2023-11-29 01:57:24,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3080 to 2418. [2023-11-29 01:57:24,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2418 states, 2416 states have (on average 1.5653973509933774) internal successors, (3782), 2417 states have internal predecessors, (3782), 0 states have call successors, (0), 0 states 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 01:57:24,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2418 states to 2418 states and 3782 transitions. [2023-11-29 01:57:24,838 INFO L78 Accepts]: Start accepts. Automaton has 2418 states and 3782 transitions. Word has length 74 [2023-11-29 01:57:24,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:24,838 INFO L495 AbstractCegarLoop]: Abstraction has 2418 states and 3782 transitions. [2023-11-29 01:57:24,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 9 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:57:24,839 INFO L276 IsEmpty]: Start isEmpty. Operand 2418 states and 3782 transitions. [2023-11-29 01:57:24,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-29 01:57:24,840 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:24,840 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] [2023-11-29 01:57:24,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 01:57:24,841 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:24,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:24,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1825621238, now seen corresponding path program 1 times [2023-11-29 01:57:24,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:24,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138047649] [2023-11-29 01:57:24,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:24,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:24,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:24,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:57:24,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:24,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138047649] [2023-11-29 01:57:24,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138047649] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:57:24,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:57:24,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:57:24,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893788750] [2023-11-29 01:57:24,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:24,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:57:24,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:24,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:57:24,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:57:24,956 INFO L87 Difference]: Start difference. First operand 2418 states and 3782 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:57:25,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:25,008 INFO L93 Difference]: Finished difference Result 2623 states and 4113 transitions. [2023-11-29 01:57:25,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:57:25,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-11-29 01:57:25,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:25,023 INFO L225 Difference]: With dead ends: 2623 [2023-11-29 01:57:25,023 INFO L226 Difference]: Without dead ends: 2515 [2023-11-29 01:57:25,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:57:25,026 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 1498 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:25,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 1656 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:57:25,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2515 states. [2023-11-29 01:57:25,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2515 to 2511. [2023-11-29 01:57:25,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2511 states, 2509 states have (on average 1.5663611000398565) internal successors, (3930), 2510 states have internal predecessors, (3930), 0 states have call successors, (0), 0 states 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 01:57:25,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2511 states to 2511 states and 3930 transitions. [2023-11-29 01:57:25,091 INFO L78 Accepts]: Start accepts. Automaton has 2511 states and 3930 transitions. Word has length 76 [2023-11-29 01:57:25,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:25,092 INFO L495 AbstractCegarLoop]: Abstraction has 2511 states and 3930 transitions. [2023-11-29 01:57:25,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:57:25,092 INFO L276 IsEmpty]: Start isEmpty. Operand 2511 states and 3930 transitions. [2023-11-29 01:57:25,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-29 01:57:25,093 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:25,093 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] [2023-11-29 01:57:25,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 01:57:25,094 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:25,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:25,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1823476286, now seen corresponding path program 1 times [2023-11-29 01:57:25,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:25,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811818767] [2023-11-29 01:57:25,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:25,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:25,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:25,538 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 01:57:25,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:25,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811818767] [2023-11-29 01:57:25,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811818767] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:57:25,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:57:25,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 01:57:25,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411321056] [2023-11-29 01:57:25,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:25,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:57:25,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:25,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:57:25,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:57:25,541 INFO L87 Difference]: Start difference. First operand 2511 states and 3930 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:57:25,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:25,977 INFO L93 Difference]: Finished difference Result 2714 states and 4254 transitions. [2023-11-29 01:57:25,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:57:25,978 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-11-29 01:57:25,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:25,993 INFO L225 Difference]: With dead ends: 2714 [2023-11-29 01:57:25,993 INFO L226 Difference]: Without dead ends: 2513 [2023-11-29 01:57:25,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:57:25,996 INFO L413 NwaCegarLoop]: 1571 mSDtfsCounter, 9060 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9060 SdHoareTripleChecker+Valid, 2081 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:25,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9060 Valid, 2081 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:57:26,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2513 states. [2023-11-29 01:57:26,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2513 to 2511. [2023-11-29 01:57:26,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2511 states, 2509 states have (on average 1.5655639697090473) internal successors, (3928), 2510 states have internal predecessors, (3928), 0 states have call successors, (0), 0 states 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 01:57:26,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2511 states to 2511 states and 3928 transitions. [2023-11-29 01:57:26,075 INFO L78 Accepts]: Start accepts. Automaton has 2511 states and 3928 transitions. Word has length 76 [2023-11-29 01:57:26,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:26,076 INFO L495 AbstractCegarLoop]: Abstraction has 2511 states and 3928 transitions. [2023-11-29 01:57:26,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:57:26,076 INFO L276 IsEmpty]: Start isEmpty. Operand 2511 states and 3928 transitions. [2023-11-29 01:57:26,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-29 01:57:26,078 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:26,078 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] [2023-11-29 01:57:26,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 01:57:26,078 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:26,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:26,079 INFO L85 PathProgramCache]: Analyzing trace with hash -821573364, now seen corresponding path program 1 times [2023-11-29 01:57:26,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:26,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53378519] [2023-11-29 01:57:26,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:26,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:26,330 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 01:57:26,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:26,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53378519] [2023-11-29 01:57:26,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53378519] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:57:26,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:57:26,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:57:26,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975548429] [2023-11-29 01:57:26,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:26,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:57:26,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:26,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:57:26,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:57:26,332 INFO L87 Difference]: Start difference. First operand 2511 states and 3928 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 01:57:26,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:26,382 INFO L93 Difference]: Finished difference Result 2519 states and 3937 transitions. [2023-11-29 01:57:26,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:57:26,383 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-11-29 01:57:26,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:26,397 INFO L225 Difference]: With dead ends: 2519 [2023-11-29 01:57:26,398 INFO L226 Difference]: Without dead ends: 2517 [2023-11-29 01:57:26,399 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 01:57:26,399 INFO L413 NwaCegarLoop]: 1578 mSDtfsCounter, 1 mSDsluCounter, 3148 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4726 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:26,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4726 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:57:26,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2517 states. [2023-11-29 01:57:26,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2517 to 2515. [2023-11-29 01:57:26,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2515 states, 2513 states have (on average 1.564265817747712) internal successors, (3931), 2514 states have internal predecessors, (3931), 0 states have call successors, (0), 0 states 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 01:57:26,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2515 states to 2515 states and 3931 transitions. [2023-11-29 01:57:26,463 INFO L78 Accepts]: Start accepts. Automaton has 2515 states and 3931 transitions. Word has length 77 [2023-11-29 01:57:26,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:26,463 INFO L495 AbstractCegarLoop]: Abstraction has 2515 states and 3931 transitions. [2023-11-29 01:57:26,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 01:57:26,464 INFO L276 IsEmpty]: Start isEmpty. Operand 2515 states and 3931 transitions. [2023-11-29 01:57:26,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 01:57:26,465 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:26,465 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] [2023-11-29 01:57:26,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 01:57:26,465 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:26,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:26,466 INFO L85 PathProgramCache]: Analyzing trace with hash -361373662, now seen corresponding path program 1 times [2023-11-29 01:57:26,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:26,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988738520] [2023-11-29 01:57:26,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:26,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:26,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:26,534 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 01:57:26,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:26,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988738520] [2023-11-29 01:57:26,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988738520] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:57:26,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:57:26,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:57:26,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227595153] [2023-11-29 01:57:26,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:26,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:57:26,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:26,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:57:26,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:57:26,536 INFO L87 Difference]: Start difference. First operand 2515 states and 3931 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:57:26,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:26,581 INFO L93 Difference]: Finished difference Result 2909 states and 4551 transitions. [2023-11-29 01:57:26,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:57:26,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-11-29 01:57:26,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:26,597 INFO L225 Difference]: With dead ends: 2909 [2023-11-29 01:57:26,597 INFO L226 Difference]: Without dead ends: 2704 [2023-11-29 01:57:26,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:57:26,599 INFO L413 NwaCegarLoop]: 1644 mSDtfsCounter, 1515 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 1737 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:26,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1515 Valid, 1737 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:57:26,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2704 states. [2023-11-29 01:57:26,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2704 to 2702. [2023-11-29 01:57:26,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2702 states, 2700 states have (on average 1.5637037037037036) internal successors, (4222), 2701 states have internal predecessors, (4222), 0 states have call successors, (0), 0 states 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 01:57:26,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2702 states to 2702 states and 4222 transitions. [2023-11-29 01:57:26,672 INFO L78 Accepts]: Start accepts. Automaton has 2702 states and 4222 transitions. Word has length 78 [2023-11-29 01:57:26,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:26,672 INFO L495 AbstractCegarLoop]: Abstraction has 2702 states and 4222 transitions. [2023-11-29 01:57:26,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:57:26,673 INFO L276 IsEmpty]: Start isEmpty. Operand 2702 states and 4222 transitions. [2023-11-29 01:57:26,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 01:57:26,674 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:26,674 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] [2023-11-29 01:57:26,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 01:57:26,674 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:26,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:26,675 INFO L85 PathProgramCache]: Analyzing trace with hash -771760350, now seen corresponding path program 1 times [2023-11-29 01:57:26,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:26,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208653084] [2023-11-29 01:57:26,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:26,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:26,740 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 01:57:26,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:26,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208653084] [2023-11-29 01:57:26,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208653084] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:57:26,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:57:26,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:57:26,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283109904] [2023-11-29 01:57:26,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:26,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:57:26,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:26,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:57:26,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:57:26,743 INFO L87 Difference]: Start difference. First operand 2702 states and 4222 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:57:26,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:26,796 INFO L93 Difference]: Finished difference Result 3454 states and 5396 transitions. [2023-11-29 01:57:26,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:57:26,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-11-29 01:57:26,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:26,812 INFO L225 Difference]: With dead ends: 3454 [2023-11-29 01:57:26,812 INFO L226 Difference]: Without dead ends: 3062 [2023-11-29 01:57:26,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:57:26,815 INFO L413 NwaCegarLoop]: 1642 mSDtfsCounter, 1513 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:26,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1513 Valid, 1739 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:57:26,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3062 states. [2023-11-29 01:57:26,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3062 to 3060. [2023-11-29 01:57:26,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3060 states, 3058 states have (on average 1.5604970568999346) internal successors, (4772), 3059 states have internal predecessors, (4772), 0 states have call successors, (0), 0 states 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 01:57:26,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3060 states to 3060 states and 4772 transitions. [2023-11-29 01:57:26,905 INFO L78 Accepts]: Start accepts. Automaton has 3060 states and 4772 transitions. Word has length 78 [2023-11-29 01:57:26,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:26,906 INFO L495 AbstractCegarLoop]: Abstraction has 3060 states and 4772 transitions. [2023-11-29 01:57:26,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:57:26,906 INFO L276 IsEmpty]: Start isEmpty. Operand 3060 states and 4772 transitions. [2023-11-29 01:57:26,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 01:57:26,907 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:26,907 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] [2023-11-29 01:57:26,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 01:57:26,908 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:26,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:26,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1000399582, now seen corresponding path program 1 times [2023-11-29 01:57:26,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:26,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732459806] [2023-11-29 01:57:26,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:26,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:26,997 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 01:57:26,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:26,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732459806] [2023-11-29 01:57:26,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732459806] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:57:26,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:57:26,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:57:26,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122664879] [2023-11-29 01:57:26,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:26,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:57:26,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:26,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:57:26,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:57:27,000 INFO L87 Difference]: Start difference. First operand 3060 states and 4772 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:57:27,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:27,069 INFO L93 Difference]: Finished difference Result 4496 states and 6990 transitions. [2023-11-29 01:57:27,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:57:27,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-11-29 01:57:27,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:27,088 INFO L225 Difference]: With dead ends: 4496 [2023-11-29 01:57:27,088 INFO L226 Difference]: Without dead ends: 3746 [2023-11-29 01:57:27,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:57:27,091 INFO L413 NwaCegarLoop]: 1630 mSDtfsCounter, 1509 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1509 SdHoareTripleChecker+Valid, 1735 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:27,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1509 Valid, 1735 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:57:27,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3746 states. [2023-11-29 01:57:27,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3746 to 3744. [2023-11-29 01:57:27,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3744 states, 3742 states have (on average 1.5521111704970605) internal successors, (5808), 3743 states have internal predecessors, (5808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:57:27,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3744 states to 3744 states and 5808 transitions. [2023-11-29 01:57:27,198 INFO L78 Accepts]: Start accepts. Automaton has 3744 states and 5808 transitions. Word has length 78 [2023-11-29 01:57:27,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:27,198 INFO L495 AbstractCegarLoop]: Abstraction has 3744 states and 5808 transitions. [2023-11-29 01:57:27,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:57:27,199 INFO L276 IsEmpty]: Start isEmpty. Operand 3744 states and 5808 transitions. [2023-11-29 01:57:27,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 01:57:27,200 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:27,200 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] [2023-11-29 01:57:27,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 01:57:27,200 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:27,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:27,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1626055646, now seen corresponding path program 1 times [2023-11-29 01:57:27,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:27,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231547696] [2023-11-29 01:57:27,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:27,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:27,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:27,265 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 01:57:27,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:27,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231547696] [2023-11-29 01:57:27,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231547696] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:57:27,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:57:27,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:57:27,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580649248] [2023-11-29 01:57:27,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:27,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:57:27,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:27,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:57:27,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:57:27,267 INFO L87 Difference]: Start difference. First operand 3744 states and 5808 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:57:27,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:27,372 INFO L93 Difference]: Finished difference Result 6484 states and 9986 transitions. [2023-11-29 01:57:27,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:57:27,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-11-29 01:57:27,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:27,389 INFO L225 Difference]: With dead ends: 6484 [2023-11-29 01:57:27,389 INFO L226 Difference]: Without dead ends: 5050 [2023-11-29 01:57:27,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:57:27,393 INFO L413 NwaCegarLoop]: 1628 mSDtfsCounter, 1507 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1737 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:27,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 1737 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:57:27,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5050 states. [2023-11-29 01:57:27,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5050 to 5048. [2023-11-29 01:57:27,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5048 states, 5046 states have (on average 1.5362663495838287) internal successors, (7752), 5047 states have internal predecessors, (7752), 0 states have call successors, (0), 0 states 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 01:57:27,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5048 states to 5048 states and 7752 transitions. [2023-11-29 01:57:27,551 INFO L78 Accepts]: Start accepts. Automaton has 5048 states and 7752 transitions. Word has length 78 [2023-11-29 01:57:27,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:27,551 INFO L495 AbstractCegarLoop]: Abstraction has 5048 states and 7752 transitions. [2023-11-29 01:57:27,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:57:27,551 INFO L276 IsEmpty]: Start isEmpty. Operand 5048 states and 7752 transitions. [2023-11-29 01:57:27,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 01:57:27,552 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:27,552 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] [2023-11-29 01:57:27,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 01:57:27,553 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:27,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:27,553 INFO L85 PathProgramCache]: Analyzing trace with hash -737322206, now seen corresponding path program 1 times [2023-11-29 01:57:27,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:27,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884626116] [2023-11-29 01:57:27,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:27,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:27,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:27,620 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 01:57:27,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:27,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884626116] [2023-11-29 01:57:27,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884626116] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:57:27,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:57:27,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:57:27,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599241379] [2023-11-29 01:57:27,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:27,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:57:27,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:27,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:57:27,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:57:27,622 INFO L87 Difference]: Start difference. First operand 5048 states and 7752 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:57:27,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:27,790 INFO L93 Difference]: Finished difference Result 10268 states and 15594 transitions. [2023-11-29 01:57:27,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:57:27,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-11-29 01:57:27,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:27,802 INFO L225 Difference]: With dead ends: 10268 [2023-11-29 01:57:27,802 INFO L226 Difference]: Without dead ends: 7530 [2023-11-29 01:57:27,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:57:27,808 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 1505 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:27,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1505 Valid, 1739 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:57:27,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7530 states. [2023-11-29 01:57:28,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7530 to 7528. [2023-11-29 01:57:28,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7528 states, 7526 states have (on average 1.5126229072548498) internal successors, (11384), 7527 states have internal predecessors, (11384), 0 states have call successors, (0), 0 states 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 01:57:28,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7528 states to 7528 states and 11384 transitions. [2023-11-29 01:57:28,070 INFO L78 Accepts]: Start accepts. Automaton has 7528 states and 11384 transitions. Word has length 78 [2023-11-29 01:57:28,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:28,070 INFO L495 AbstractCegarLoop]: Abstraction has 7528 states and 11384 transitions. [2023-11-29 01:57:28,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:57:28,071 INFO L276 IsEmpty]: Start isEmpty. Operand 7528 states and 11384 transitions. [2023-11-29 01:57:28,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 01:57:28,072 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:28,072 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] [2023-11-29 01:57:28,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 01:57:28,072 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:28,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:28,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1040343518, now seen corresponding path program 1 times [2023-11-29 01:57:28,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:28,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856559224] [2023-11-29 01:57:28,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:28,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:28,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:28,137 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 01:57:28,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:28,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856559224] [2023-11-29 01:57:28,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856559224] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:57:28,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:57:28,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:57:28,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268792290] [2023-11-29 01:57:28,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:28,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:57:28,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:28,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:57:28,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:57:28,139 INFO L87 Difference]: Start difference. First operand 7528 states and 11384 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:57:28,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:28,433 INFO L93 Difference]: Finished difference Result 17452 states and 26042 transitions. [2023-11-29 01:57:28,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:57:28,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-11-29 01:57:28,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:28,457 INFO L225 Difference]: With dead ends: 17452 [2023-11-29 01:57:28,457 INFO L226 Difference]: Without dead ends: 12234 [2023-11-29 01:57:28,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:57:28,466 INFO L413 NwaCegarLoop]: 1640 mSDtfsCounter, 1511 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:28,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1511 Valid, 1741 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:57:28,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12234 states. [2023-11-29 01:57:28,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12234 to 12232. [2023-11-29 01:57:28,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12232 states, 12230 states have (on average 1.4829108748977924) internal successors, (18136), 12231 states have internal predecessors, (18136), 0 states have call successors, (0), 0 states 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 01:57:28,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12232 states to 12232 states and 18136 transitions. [2023-11-29 01:57:28,881 INFO L78 Accepts]: Start accepts. Automaton has 12232 states and 18136 transitions. Word has length 78 [2023-11-29 01:57:28,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:28,881 INFO L495 AbstractCegarLoop]: Abstraction has 12232 states and 18136 transitions. [2023-11-29 01:57:28,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:57:28,882 INFO L276 IsEmpty]: Start isEmpty. Operand 12232 states and 18136 transitions. [2023-11-29 01:57:28,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-29 01:57:28,883 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:28,883 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] [2023-11-29 01:57:28,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 01:57:28,883 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:28,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:28,884 INFO L85 PathProgramCache]: Analyzing trace with hash -674710201, now seen corresponding path program 1 times [2023-11-29 01:57:28,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:28,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640377301] [2023-11-29 01:57:28,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:28,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:28,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:28,944 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 01:57:28,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:28,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640377301] [2023-11-29 01:57:28,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640377301] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:57:28,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:57:28,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:57:28,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734063618] [2023-11-29 01:57:28,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:28,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:57:28,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:28,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:57:28,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:57:28,946 INFO L87 Difference]: Start difference. First operand 12232 states and 18136 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:57:29,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:29,246 INFO L93 Difference]: Finished difference Result 22479 states and 33374 transitions. [2023-11-29 01:57:29,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:57:29,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-11-29 01:57:29,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:29,281 INFO L225 Difference]: With dead ends: 22479 [2023-11-29 01:57:29,281 INFO L226 Difference]: Without dead ends: 16972 [2023-11-29 01:57:29,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:57:29,291 INFO L413 NwaCegarLoop]: 1649 mSDtfsCounter, 1514 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:29,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 1738 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:57:29,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16972 states. [2023-11-29 01:57:29,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16972 to 16970. [2023-11-29 01:57:29,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16970 states, 16968 states have (on average 1.4725365393682226) internal successors, (24986), 16969 states have internal predecessors, (24986), 0 states have call successors, (0), 0 states 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 01:57:29,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16970 states to 16970 states and 24986 transitions. [2023-11-29 01:57:29,903 INFO L78 Accepts]: Start accepts. Automaton has 16970 states and 24986 transitions. Word has length 80 [2023-11-29 01:57:29,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:29,903 INFO L495 AbstractCegarLoop]: Abstraction has 16970 states and 24986 transitions. [2023-11-29 01:57:29,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:57:29,904 INFO L276 IsEmpty]: Start isEmpty. Operand 16970 states and 24986 transitions. [2023-11-29 01:57:29,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 01:57:29,908 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:29,909 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:57:29,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 01:57:29,909 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:29,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:29,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1821309422, now seen corresponding path program 1 times [2023-11-29 01:57:29,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:29,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312418501] [2023-11-29 01:57:29,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:29,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:29,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:30,149 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 01:57:30,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:30,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312418501] [2023-11-29 01:57:30,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312418501] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:57:30,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:57:30,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 01:57:30,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834261812] [2023-11-29 01:57:30,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:30,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:57:30,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:30,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:57:30,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:57:30,152 INFO L87 Difference]: Start difference. First operand 16970 states and 24986 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 01:57:32,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:32,420 INFO L93 Difference]: Finished difference Result 122522 states and 178786 transitions. [2023-11-29 01:57:32,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:57:32,420 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 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 100 [2023-11-29 01:57:32,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:32,552 INFO L225 Difference]: With dead ends: 122522 [2023-11-29 01:57:32,553 INFO L226 Difference]: Without dead ends: 107864 [2023-11-29 01:57:32,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:57:32,578 INFO L413 NwaCegarLoop]: 1667 mSDtfsCounter, 9884 mSDsluCounter, 2706 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9884 SdHoareTripleChecker+Valid, 4373 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:32,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9884 Valid, 4373 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:57:32,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107864 states. [2023-11-29 01:57:33,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107864 to 31626. [2023-11-29 01:57:33,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31626 states, 31624 states have (on average 1.4599671135846193) internal successors, (46170), 31625 states have internal predecessors, (46170), 0 states have call successors, (0), 0 states 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 01:57:34,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31626 states to 31626 states and 46170 transitions. [2023-11-29 01:57:34,039 INFO L78 Accepts]: Start accepts. Automaton has 31626 states and 46170 transitions. Word has length 100 [2023-11-29 01:57:34,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:34,039 INFO L495 AbstractCegarLoop]: Abstraction has 31626 states and 46170 transitions. [2023-11-29 01:57:34,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states 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 01:57:34,039 INFO L276 IsEmpty]: Start isEmpty. Operand 31626 states and 46170 transitions. [2023-11-29 01:57:34,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 01:57:34,043 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:34,043 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:57:34,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 01:57:34,043 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:34,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:34,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1410922734, now seen corresponding path program 1 times [2023-11-29 01:57:34,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:34,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126176453] [2023-11-29 01:57:34,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:34,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:34,235 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 01:57:34,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:34,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126176453] [2023-11-29 01:57:34,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126176453] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:57:34,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:57:34,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 01:57:34,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605980465] [2023-11-29 01:57:34,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:34,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:57:34,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:34,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:57:34,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:57:34,238 INFO L87 Difference]: Start difference. First operand 31626 states and 46170 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states 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 01:57:37,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:37,560 INFO L93 Difference]: Finished difference Result 137178 states and 199970 transitions. [2023-11-29 01:57:37,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:57:37,561 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 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 100 [2023-11-29 01:57:37,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:37,669 INFO L225 Difference]: With dead ends: 137178 [2023-11-29 01:57:37,669 INFO L226 Difference]: Without dead ends: 122520 [2023-11-29 01:57:37,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:57:37,693 INFO L413 NwaCegarLoop]: 1664 mSDtfsCounter, 9928 mSDsluCounter, 2580 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9928 SdHoareTripleChecker+Valid, 4244 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:37,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9928 Valid, 4244 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:57:37,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122520 states. [2023-11-29 01:57:39,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122520 to 53642. [2023-11-29 01:57:39,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53642 states, 53640 states have (on average 1.4501491424310216) internal successors, (77786), 53641 states have internal predecessors, (77786), 0 states have call successors, (0), 0 states 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 01:57:39,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53642 states to 53642 states and 77786 transitions. [2023-11-29 01:57:39,770 INFO L78 Accepts]: Start accepts. Automaton has 53642 states and 77786 transitions. Word has length 100 [2023-11-29 01:57:39,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:39,771 INFO L495 AbstractCegarLoop]: Abstraction has 53642 states and 77786 transitions. [2023-11-29 01:57:39,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 0 states have call successors, (0), 0 states 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 01:57:39,771 INFO L276 IsEmpty]: Start isEmpty. Operand 53642 states and 77786 transitions. [2023-11-29 01:57:39,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 01:57:39,776 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:39,777 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:57:39,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 01:57:39,777 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:39,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:39,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1182283502, now seen corresponding path program 1 times [2023-11-29 01:57:39,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:39,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188211130] [2023-11-29 01:57:39,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:39,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:39,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:40,006 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 01:57:40,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:40,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188211130] [2023-11-29 01:57:40,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188211130] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:57:40,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:57:40,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 01:57:40,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393893276] [2023-11-29 01:57:40,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:40,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:57:40,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:40,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:57:40,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:57:40,009 INFO L87 Difference]: Start difference. First operand 53642 states and 77786 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 01:57:44,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:44,467 INFO L93 Difference]: Finished difference Result 151834 states and 221154 transitions. [2023-11-29 01:57:44,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:57:44,468 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 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 100 [2023-11-29 01:57:44,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:44,668 INFO L225 Difference]: With dead ends: 151834 [2023-11-29 01:57:44,668 INFO L226 Difference]: Without dead ends: 137176 [2023-11-29 01:57:44,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:57:44,704 INFO L413 NwaCegarLoop]: 1661 mSDtfsCounter, 9995 mSDsluCounter, 2616 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9995 SdHoareTripleChecker+Valid, 4277 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:44,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9995 Valid, 4277 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:57:44,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137176 states. [2023-11-29 01:57:47,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137176 to 68298. [2023-11-29 01:57:47,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68298 states, 68296 states have (on average 1.4491331849595877) internal successors, (98970), 68297 states have internal predecessors, (98970), 0 states have call successors, (0), 0 states 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 01:57:47,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68298 states to 68298 states and 98970 transitions. [2023-11-29 01:57:47,447 INFO L78 Accepts]: Start accepts. Automaton has 68298 states and 98970 transitions. Word has length 100 [2023-11-29 01:57:47,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:47,447 INFO L495 AbstractCegarLoop]: Abstraction has 68298 states and 98970 transitions. [2023-11-29 01:57:47,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 01:57:47,448 INFO L276 IsEmpty]: Start isEmpty. Operand 68298 states and 98970 transitions. [2023-11-29 01:57:47,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 01:57:47,451 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:47,452 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:57:47,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 01:57:47,452 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:47,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:47,452 INFO L85 PathProgramCache]: Analyzing trace with hash 556627438, now seen corresponding path program 1 times [2023-11-29 01:57:47,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:47,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170594573] [2023-11-29 01:57:47,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:47,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:47,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:47,673 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 01:57:47,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:47,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170594573] [2023-11-29 01:57:47,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170594573] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:57:47,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:57:47,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 01:57:47,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452926511] [2023-11-29 01:57:47,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:47,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:57:47,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:47,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:57:47,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:57:47,675 INFO L87 Difference]: Start difference. First operand 68298 states and 98970 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:57:52,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:57:52,768 INFO L93 Difference]: Finished difference Result 166490 states and 242338 transitions. [2023-11-29 01:57:52,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:57:52,768 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-11-29 01:57:52,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:57:52,910 INFO L225 Difference]: With dead ends: 166490 [2023-11-29 01:57:52,910 INFO L226 Difference]: Without dead ends: 151832 [2023-11-29 01:57:52,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:57:52,930 INFO L413 NwaCegarLoop]: 1658 mSDtfsCounter, 10061 mSDsluCounter, 2580 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10061 SdHoareTripleChecker+Valid, 4238 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:57:52,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10061 Valid, 4238 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:57:53,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151832 states. [2023-11-29 01:57:55,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151832 to 82954. [2023-11-29 01:57:55,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82954 states, 82952 states have (on average 1.4484762272157392) internal successors, (120154), 82953 states have internal predecessors, (120154), 0 states have call successors, (0), 0 states 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 01:57:56,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82954 states to 82954 states and 120154 transitions. [2023-11-29 01:57:56,043 INFO L78 Accepts]: Start accepts. Automaton has 82954 states and 120154 transitions. Word has length 100 [2023-11-29 01:57:56,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:57:56,043 INFO L495 AbstractCegarLoop]: Abstraction has 82954 states and 120154 transitions. [2023-11-29 01:57:56,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:57:56,043 INFO L276 IsEmpty]: Start isEmpty. Operand 82954 states and 120154 transitions. [2023-11-29 01:57:56,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 01:57:56,047 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:57:56,048 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:57:56,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 01:57:56,048 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:57:56,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:57:56,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1445360878, now seen corresponding path program 1 times [2023-11-29 01:57:56,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:57:56,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853736258] [2023-11-29 01:57:56,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:57:56,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:57:56,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:57:56,217 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 01:57:56,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:57:56,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853736258] [2023-11-29 01:57:56,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853736258] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:57:56,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:57:56,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 01:57:56,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502610273] [2023-11-29 01:57:56,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:57:56,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:57:56,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:57:56,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:57:56,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:57:56,220 INFO L87 Difference]: Start difference. First operand 82954 states and 120154 transitions. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:58:01,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:58:01,416 INFO L93 Difference]: Finished difference Result 181146 states and 263522 transitions. [2023-11-29 01:58:01,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:58:01,416 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2023-11-29 01:58:01,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:58:01,590 INFO L225 Difference]: With dead ends: 181146 [2023-11-29 01:58:01,590 INFO L226 Difference]: Without dead ends: 166488 [2023-11-29 01:58:01,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:58:01,615 INFO L413 NwaCegarLoop]: 1661 mSDtfsCounter, 9919 mSDsluCounter, 2636 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9919 SdHoareTripleChecker+Valid, 4297 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:58:01,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9919 Valid, 4297 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:58:01,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166488 states. [2023-11-29 01:58:05,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166488 to 97610. [2023-11-29 01:58:05,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97610 states, 97608 states have (on average 1.4480165560199985) internal successors, (141338), 97609 states have internal predecessors, (141338), 0 states have call successors, (0), 0 states 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 01:58:05,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97610 states to 97610 states and 141338 transitions. [2023-11-29 01:58:05,299 INFO L78 Accepts]: Start accepts. Automaton has 97610 states and 141338 transitions. Word has length 100 [2023-11-29 01:58:05,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:58:05,299 INFO L495 AbstractCegarLoop]: Abstraction has 97610 states and 141338 transitions. [2023-11-29 01:58:05,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:58:05,299 INFO L276 IsEmpty]: Start isEmpty. Operand 97610 states and 141338 transitions. [2023-11-29 01:58:05,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-29 01:58:05,303 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:58:05,303 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:58:05,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 01:58:05,303 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:58:05,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:58:05,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1142339566, now seen corresponding path program 1 times [2023-11-29 01:58:05,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:58:05,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764353508] [2023-11-29 01:58:05,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:05,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:58:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:05,662 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 01:58:05,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:58:05,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764353508] [2023-11-29 01:58:05,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764353508] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:58:05,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:58:05,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 01:58:05,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048451241] [2023-11-29 01:58:05,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:58:05,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:58:05,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:58:05,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:58:05,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:58:05,665 INFO L87 Difference]: Start difference. First operand 97610 states and 141338 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 01:58:11,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:58:11,219 INFO L93 Difference]: Finished difference Result 195802 states and 284706 transitions. [2023-11-29 01:58:11,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:58:11,220 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 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 100 [2023-11-29 01:58:11,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:58:11,385 INFO L225 Difference]: With dead ends: 195802 [2023-11-29 01:58:11,385 INFO L226 Difference]: Without dead ends: 181144 [2023-11-29 01:58:11,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:58:11,407 INFO L413 NwaCegarLoop]: 1666 mSDtfsCounter, 9815 mSDsluCounter, 2828 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9815 SdHoareTripleChecker+Valid, 4494 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:58:11,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9815 Valid, 4494 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:58:11,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181144 states. [2023-11-29 01:58:15,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181144 to 112266. [2023-11-29 01:58:15,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112266 states, 112264 states have (on average 1.4476769044395355) internal successors, (162522), 112265 states have internal predecessors, (162522), 0 states have call successors, (0), 0 states 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 01:58:15,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112266 states to 112266 states and 162522 transitions. [2023-11-29 01:58:15,839 INFO L78 Accepts]: Start accepts. Automaton has 112266 states and 162522 transitions. Word has length 100 [2023-11-29 01:58:15,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:58:15,839 INFO L495 AbstractCegarLoop]: Abstraction has 112266 states and 162522 transitions. [2023-11-29 01:58:15,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 01:58:15,839 INFO L276 IsEmpty]: Start isEmpty. Operand 112266 states and 162522 transitions. [2023-11-29 01:58:15,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-29 01:58:15,844 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:58:15,844 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:58:15,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 01:58:15,844 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:58:15,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:58:15,844 INFO L85 PathProgramCache]: Analyzing trace with hash 2105207190, now seen corresponding path program 1 times [2023-11-29 01:58:15,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:58:15,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748903333] [2023-11-29 01:58:15,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:15,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:58:15,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:15,925 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:58:15,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:58:15,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748903333] [2023-11-29 01:58:15,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748903333] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:58:15,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:58:15,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:58:15,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296370178] [2023-11-29 01:58:15,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:58:15,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:58:15,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:58:15,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:58:15,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:58:15,928 INFO L87 Difference]: Start difference. First operand 112266 states and 162522 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 01:58:18,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:58:18,325 INFO L93 Difference]: Finished difference Result 189093 states and 274868 transitions. [2023-11-29 01:58:18,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:58:18,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2023-11-29 01:58:18,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:58:18,396 INFO L225 Difference]: With dead ends: 189093 [2023-11-29 01:58:18,396 INFO L226 Difference]: Without dead ends: 79139 [2023-11-29 01:58:18,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:58:18,433 INFO L413 NwaCegarLoop]: 1635 mSDtfsCounter, 66 mSDsluCounter, 1565 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 3200 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:58:18,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 3200 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:58:18,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79139 states. [2023-11-29 01:58:21,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79139 to 79137. [2023-11-29 01:58:21,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79137 states, 79135 states have (on average 1.4531244076578) internal successors, (114993), 79136 states have internal predecessors, (114993), 0 states have call successors, (0), 0 states 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 01:58:21,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79137 states to 79137 states and 114993 transitions. [2023-11-29 01:58:21,794 INFO L78 Accepts]: Start accepts. Automaton has 79137 states and 114993 transitions. Word has length 102 [2023-11-29 01:58:21,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:58:21,795 INFO L495 AbstractCegarLoop]: Abstraction has 79137 states and 114993 transitions. [2023-11-29 01:58:21,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 01:58:21,795 INFO L276 IsEmpty]: Start isEmpty. Operand 79137 states and 114993 transitions. [2023-11-29 01:58:21,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-29 01:58:21,797 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:58:21,797 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:58:21,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 01:58:21,797 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:58:21,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:58:21,797 INFO L85 PathProgramCache]: Analyzing trace with hash 939693075, now seen corresponding path program 1 times [2023-11-29 01:58:21,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:58:21,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614193240] [2023-11-29 01:58:21,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:21,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:58:21,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:22,000 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:58:22,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:58:22,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614193240] [2023-11-29 01:58:22,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614193240] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:58:22,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:58:22,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 01:58:22,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929327711] [2023-11-29 01:58:22,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:58:22,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:58:22,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:58:22,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:58:22,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:58:22,002 INFO L87 Difference]: Start difference. First operand 79137 states and 114993 transitions. Second operand has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 01:58:26,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:58:26,640 INFO L93 Difference]: Finished difference Result 150833 states and 219833 transitions. [2023-11-29 01:58:26,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:58:26,640 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 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 102 [2023-11-29 01:58:26,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:58:26,759 INFO L225 Difference]: With dead ends: 150833 [2023-11-29 01:58:26,760 INFO L226 Difference]: Without dead ends: 140591 [2023-11-29 01:58:26,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:58:26,774 INFO L413 NwaCegarLoop]: 1656 mSDtfsCounter, 9893 mSDsluCounter, 2945 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9893 SdHoareTripleChecker+Valid, 4601 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:58:26,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9893 Valid, 4601 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:58:26,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140591 states. [2023-11-29 01:58:30,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140591 to 89377. [2023-11-29 01:58:30,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89377 states, 89375 states have (on average 1.4527664335664336) internal successors, (129841), 89376 states have internal predecessors, (129841), 0 states have call successors, (0), 0 states 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 01:58:30,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89377 states to 89377 states and 129841 transitions. [2023-11-29 01:58:30,380 INFO L78 Accepts]: Start accepts. Automaton has 89377 states and 129841 transitions. Word has length 102 [2023-11-29 01:58:30,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:58:30,380 INFO L495 AbstractCegarLoop]: Abstraction has 89377 states and 129841 transitions. [2023-11-29 01:58:30,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 01:58:30,380 INFO L276 IsEmpty]: Start isEmpty. Operand 89377 states and 129841 transitions. [2023-11-29 01:58:30,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-29 01:58:30,383 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:58:30,383 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:58:30,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 01:58:30,384 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:58:30,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:58:30,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1661071050, now seen corresponding path program 1 times [2023-11-29 01:58:30,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:58:30,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218317416] [2023-11-29 01:58:30,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:30,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:58:30,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:30,493 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:58:30,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:58:30,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218317416] [2023-11-29 01:58:30,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218317416] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:58:30,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:58:30,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:58:30,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788670767] [2023-11-29 01:58:30,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:58:30,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:58:30,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:58:30,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:58:30,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:58:30,495 INFO L87 Difference]: Start difference. First operand 89377 states and 129841 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:58:32,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:58:32,359 INFO L93 Difference]: Finished difference Result 132901 states and 192947 transitions. [2023-11-29 01:58:32,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:58:32,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2023-11-29 01:58:32,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:58:32,392 INFO L225 Difference]: With dead ends: 132901 [2023-11-29 01:58:32,392 INFO L226 Difference]: Without dead ends: 45859 [2023-11-29 01:58:32,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:58:32,406 INFO L413 NwaCegarLoop]: 1628 mSDtfsCounter, 61 mSDsluCounter, 1557 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 3185 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:58:32,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 3185 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:58:32,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45859 states. [2023-11-29 01:58:34,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45859 to 45857. [2023-11-29 01:58:34,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45857 states, 45855 states have (on average 1.4435285137934795) internal successors, (66193), 45856 states have internal predecessors, (66193), 0 states have call successors, (0), 0 states 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 01:58:34,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45857 states to 45857 states and 66193 transitions. [2023-11-29 01:58:34,193 INFO L78 Accepts]: Start accepts. Automaton has 45857 states and 66193 transitions. Word has length 103 [2023-11-29 01:58:34,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:58:34,193 INFO L495 AbstractCegarLoop]: Abstraction has 45857 states and 66193 transitions. [2023-11-29 01:58:34,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:58:34,193 INFO L276 IsEmpty]: Start isEmpty. Operand 45857 states and 66193 transitions. [2023-11-29 01:58:34,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-29 01:58:34,196 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:58:34,196 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:58:34,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 01:58:34,196 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:58:34,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:58:34,197 INFO L85 PathProgramCache]: Analyzing trace with hash 61284536, now seen corresponding path program 1 times [2023-11-29 01:58:34,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:58:34,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129124343] [2023-11-29 01:58:34,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:34,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:58:34,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:34,325 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:58:34,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:58:34,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129124343] [2023-11-29 01:58:34,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129124343] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:58:34,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:58:34,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:58:34,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634569918] [2023-11-29 01:58:34,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:58:34,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:58:34,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:58:34,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:58:34,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:58:34,327 INFO L87 Difference]: Start difference. First operand 45857 states and 66193 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 01:58:35,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:58:35,356 INFO L93 Difference]: Finished difference Result 67621 states and 97475 transitions. [2023-11-29 01:58:35,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:58:35,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2023-11-29 01:58:35,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:58:35,374 INFO L225 Difference]: With dead ends: 67621 [2023-11-29 01:58:35,375 INFO L226 Difference]: Without dead ends: 24099 [2023-11-29 01:58:35,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:58:35,390 INFO L413 NwaCegarLoop]: 1621 mSDtfsCounter, 58 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 3170 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:58:35,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 3170 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:58:35,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24099 states. [2023-11-29 01:58:36,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24099 to 24097. [2023-11-29 01:58:36,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24097 states, 24095 states have (on average 1.4376841668395932) internal successors, (34641), 24096 states have internal predecessors, (34641), 0 states have call successors, (0), 0 states 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 01:58:36,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24097 states to 24097 states and 34641 transitions. [2023-11-29 01:58:36,319 INFO L78 Accepts]: Start accepts. Automaton has 24097 states and 34641 transitions. Word has length 105 [2023-11-29 01:58:36,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:58:36,320 INFO L495 AbstractCegarLoop]: Abstraction has 24097 states and 34641 transitions. [2023-11-29 01:58:36,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 01:58:36,320 INFO L276 IsEmpty]: Start isEmpty. Operand 24097 states and 34641 transitions. [2023-11-29 01:58:36,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-29 01:58:36,321 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:58:36,322 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:58:36,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 01:58:36,322 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:58:36,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:58:36,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1006980058, now seen corresponding path program 1 times [2023-11-29 01:58:36,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:58:36,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636789734] [2023-11-29 01:58:36,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:36,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:58:36,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:36,405 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:58:36,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:58:36,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636789734] [2023-11-29 01:58:36,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636789734] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:58:36,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:58:36,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:58:36,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149750178] [2023-11-29 01:58:36,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:58:36,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:58:36,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:58:36,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:58:36,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:58:36,407 INFO L87 Difference]: Start difference. First operand 24097 states and 34641 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 01:58:36,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:58:36,792 INFO L93 Difference]: Finished difference Result 34981 states and 50147 transitions. [2023-11-29 01:58:36,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:58:36,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2023-11-29 01:58:36,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:58:36,803 INFO L225 Difference]: With dead ends: 34981 [2023-11-29 01:58:36,803 INFO L226 Difference]: Without dead ends: 13219 [2023-11-29 01:58:36,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:58:36,811 INFO L413 NwaCegarLoop]: 1614 mSDtfsCounter, 55 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:58:36,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 3155 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:58:36,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13219 states. [2023-11-29 01:58:37,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13219 to 13217. [2023-11-29 01:58:37,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13217 states, 13215 states have (on average 1.4378357926598562) internal successors, (19001), 13216 states have internal predecessors, (19001), 0 states have call successors, (0), 0 states 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 01:58:37,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13217 states to 13217 states and 19001 transitions. [2023-11-29 01:58:37,218 INFO L78 Accepts]: Start accepts. Automaton has 13217 states and 19001 transitions. Word has length 107 [2023-11-29 01:58:37,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:58:37,218 INFO L495 AbstractCegarLoop]: Abstraction has 13217 states and 19001 transitions. [2023-11-29 01:58:37,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 01:58:37,219 INFO L276 IsEmpty]: Start isEmpty. Operand 13217 states and 19001 transitions. [2023-11-29 01:58:37,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-29 01:58:37,220 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:58:37,220 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:58:37,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 01:58:37,220 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:58:37,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:58:37,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1099986668, now seen corresponding path program 1 times [2023-11-29 01:58:37,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:58:37,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698276857] [2023-11-29 01:58:37,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:37,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:58:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:37,312 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:58:37,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:58:37,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698276857] [2023-11-29 01:58:37,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698276857] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:58:37,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:58:37,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:58:37,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675400493] [2023-11-29 01:58:37,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:58:37,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:58:37,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:58:37,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:58:37,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:58:37,315 INFO L87 Difference]: Start difference. First operand 13217 states and 19001 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 01:58:37,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:58:37,614 INFO L93 Difference]: Finished difference Result 18661 states and 26687 transitions. [2023-11-29 01:58:37,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:58:37,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2023-11-29 01:58:37,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:58:37,621 INFO L225 Difference]: With dead ends: 18661 [2023-11-29 01:58:37,621 INFO L226 Difference]: Without dead ends: 7779 [2023-11-29 01:58:37,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:58:37,626 INFO L413 NwaCegarLoop]: 1607 mSDtfsCounter, 52 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 3140 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:58:37,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 3140 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:58:37,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7779 states. [2023-11-29 01:58:37,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7779 to 7777. [2023-11-29 01:58:37,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7777 states, 7775 states have (on average 1.4468167202572346) internal successors, (11249), 7776 states have internal predecessors, (11249), 0 states have call successors, (0), 0 states 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 01:58:37,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7777 states to 7777 states and 11249 transitions. [2023-11-29 01:58:37,842 INFO L78 Accepts]: Start accepts. Automaton has 7777 states and 11249 transitions. Word has length 109 [2023-11-29 01:58:37,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:58:37,843 INFO L495 AbstractCegarLoop]: Abstraction has 7777 states and 11249 transitions. [2023-11-29 01:58:37,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 01:58:37,843 INFO L276 IsEmpty]: Start isEmpty. Operand 7777 states and 11249 transitions. [2023-11-29 01:58:37,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-29 01:58:37,844 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:58:37,845 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:58:37,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-29 01:58:37,845 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:58:37,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:58:37,845 INFO L85 PathProgramCache]: Analyzing trace with hash 479231874, now seen corresponding path program 1 times [2023-11-29 01:58:37,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:58:37,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205884917] [2023-11-29 01:58:37,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:37,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:58:37,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:37,938 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:58:37,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:58:37,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205884917] [2023-11-29 01:58:37,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205884917] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:58:37,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:58:37,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:58:37,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213396146] [2023-11-29 01:58:37,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:58:37,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:58:37,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:58:37,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:58:37,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:58:37,940 INFO L87 Difference]: Start difference. First operand 7777 states and 11249 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 01:58:38,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:58:38,100 INFO L93 Difference]: Finished difference Result 10501 states and 15059 transitions. [2023-11-29 01:58:38,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:58:38,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2023-11-29 01:58:38,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:58:38,104 INFO L225 Difference]: With dead ends: 10501 [2023-11-29 01:58:38,104 INFO L226 Difference]: Without dead ends: 5059 [2023-11-29 01:58:38,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:58:38,107 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 49 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 3125 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:58:38,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 3125 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:58:38,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5059 states. [2023-11-29 01:58:38,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5059 to 5057. [2023-11-29 01:58:38,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5057 states, 5055 states have (on average 1.4652818991097922) internal successors, (7407), 5056 states have internal predecessors, (7407), 0 states have call successors, (0), 0 states 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 01:58:38,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5057 states to 5057 states and 7407 transitions. [2023-11-29 01:58:38,227 INFO L78 Accepts]: Start accepts. Automaton has 5057 states and 7407 transitions. Word has length 111 [2023-11-29 01:58:38,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:58:38,227 INFO L495 AbstractCegarLoop]: Abstraction has 5057 states and 7407 transitions. [2023-11-29 01:58:38,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states 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 01:58:38,227 INFO L276 IsEmpty]: Start isEmpty. Operand 5057 states and 7407 transitions. [2023-11-29 01:58:38,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-29 01:58:38,228 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:58:38,228 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:58:38,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-29 01:58:38,228 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:58:38,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:58:38,229 INFO L85 PathProgramCache]: Analyzing trace with hash -2063566992, now seen corresponding path program 1 times [2023-11-29 01:58:38,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:58:38,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364074748] [2023-11-29 01:58:38,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:38,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:58:38,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:38,328 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:58:38,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:58:38,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364074748] [2023-11-29 01:58:38,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364074748] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:58:38,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:58:38,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:58:38,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943065279] [2023-11-29 01:58:38,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:58:38,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:58:38,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:58:38,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:58:38,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:58:38,330 INFO L87 Difference]: Start difference. First operand 5057 states and 7407 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:58:38,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:58:38,411 INFO L93 Difference]: Finished difference Result 6421 states and 9296 transitions. [2023-11-29 01:58:38,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:58:38,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2023-11-29 01:58:38,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:58:38,415 INFO L225 Difference]: With dead ends: 6421 [2023-11-29 01:58:38,415 INFO L226 Difference]: Without dead ends: 3699 [2023-11-29 01:58:38,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:58:38,417 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 46 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 3110 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:58:38,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 3110 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:58:38,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3699 states. [2023-11-29 01:58:38,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3699 to 3697. [2023-11-29 01:58:38,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3697 states, 3695 states have (on average 1.4893098782138023) internal successors, (5503), 3696 states have internal predecessors, (5503), 0 states have call successors, (0), 0 states 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 01:58:38,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3697 states to 3697 states and 5503 transitions. [2023-11-29 01:58:38,493 INFO L78 Accepts]: Start accepts. Automaton has 3697 states and 5503 transitions. Word has length 113 [2023-11-29 01:58:38,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:58:38,494 INFO L495 AbstractCegarLoop]: Abstraction has 3697 states and 5503 transitions. [2023-11-29 01:58:38,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:58:38,494 INFO L276 IsEmpty]: Start isEmpty. Operand 3697 states and 5503 transitions. [2023-11-29 01:58:38,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 01:58:38,495 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:58:38,495 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:58:38,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-29 01:58:38,495 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:58:38,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:58:38,496 INFO L85 PathProgramCache]: Analyzing trace with hash 159011038, now seen corresponding path program 1 times [2023-11-29 01:58:38,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:58:38,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572947706] [2023-11-29 01:58:38,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:38,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:58:38,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:39,422 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:58:39,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:58:39,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572947706] [2023-11-29 01:58:39,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572947706] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:58:39,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640670367] [2023-11-29 01:58:39,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:39,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:58:39,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:58:39,425 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:58:39,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:58:39,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:39,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:58:39,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:58:39,785 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:58:39,785 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:58:40,003 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 01:58:40,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640670367] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:58:40,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:58:40,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 4] total 17 [2023-11-29 01:58:40,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358142383] [2023-11-29 01:58:40,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:58:40,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 01:58:40,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:58:40,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 01:58:40,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:58:40,007 INFO L87 Difference]: Start difference. First operand 3697 states and 5503 transitions. Second operand has 17 states, 17 states have (on average 19.470588235294116) internal successors, (331), 17 states have internal predecessors, (331), 0 states have call successors, (0), 0 states 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 01:58:42,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:58:42,666 INFO L93 Difference]: Finished difference Result 14950 states and 20769 transitions. [2023-11-29 01:58:42,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-29 01:58:42,667 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 19.470588235294116) internal successors, (331), 17 states have internal predecessors, (331), 0 states have call successors, (0), 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 115 [2023-11-29 01:58:42,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:58:42,678 INFO L225 Difference]: With dead ends: 14950 [2023-11-29 01:58:42,678 INFO L226 Difference]: Without dead ends: 13588 [2023-11-29 01:58:42,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1091 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=720, Invalid=3062, Unknown=0, NotChecked=0, Total=3782 [2023-11-29 01:58:42,684 INFO L413 NwaCegarLoop]: 1542 mSDtfsCounter, 18311 mSDsluCounter, 5054 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18311 SdHoareTripleChecker+Valid, 6596 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:58:42,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18311 Valid, 6596 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 01:58:42,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13588 states. [2023-11-29 01:58:43,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13588 to 13200. [2023-11-29 01:58:43,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13200 states, 13198 states have (on average 1.3649795423549023) internal successors, (18015), 13199 states have internal predecessors, (18015), 0 states have call successors, (0), 0 states 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 01:58:43,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13200 states to 13200 states and 18015 transitions. [2023-11-29 01:58:43,162 INFO L78 Accepts]: Start accepts. Automaton has 13200 states and 18015 transitions. Word has length 115 [2023-11-29 01:58:43,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:58:43,162 INFO L495 AbstractCegarLoop]: Abstraction has 13200 states and 18015 transitions. [2023-11-29 01:58:43,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 19.470588235294116) internal successors, (331), 17 states have internal predecessors, (331), 0 states have call successors, (0), 0 states 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 01:58:43,162 INFO L276 IsEmpty]: Start isEmpty. Operand 13200 states and 18015 transitions. [2023-11-29 01:58:43,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 01:58:43,164 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:58:43,164 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:58:43,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:58:43,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 01:58:43,365 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:58:43,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:58:43,365 INFO L85 PathProgramCache]: Analyzing trace with hash 700168423, now seen corresponding path program 1 times [2023-11-29 01:58:43,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:58:43,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904726305] [2023-11-29 01:58:43,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:43,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:58:43,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:44,053 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:58:44,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:58:44,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904726305] [2023-11-29 01:58:44,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904726305] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:58:44,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257347418] [2023-11-29 01:58:44,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:44,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:58:44,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:58:44,055 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:58:44,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:58:44,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:44,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 01:58:44,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:58:44,796 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:58:44,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:58:45,740 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:58:45,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257347418] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:58:45,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:58:45,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 27 [2023-11-29 01:58:45,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232961484] [2023-11-29 01:58:45,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:58:45,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 01:58:45,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:58:45,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 01:58:45,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=650, Unknown=0, NotChecked=0, Total=756 [2023-11-29 01:58:45,743 INFO L87 Difference]: Start difference. First operand 13200 states and 18015 transitions. Second operand has 28 states, 28 states have (on average 11.285714285714286) internal successors, (316), 27 states have internal predecessors, (316), 0 states have call successors, (0), 0 states 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 01:58:48,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:58:48,405 INFO L93 Difference]: Finished difference Result 43546 states and 58393 transitions. [2023-11-29 01:58:48,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-29 01:58:48,406 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 11.285714285714286) internal successors, (316), 27 states have internal predecessors, (316), 0 states have call successors, (0), 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 116 [2023-11-29 01:58:48,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:58:48,430 INFO L225 Difference]: With dead ends: 43546 [2023-11-29 01:58:48,430 INFO L226 Difference]: Without dead ends: 32801 [2023-11-29 01:58:48,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1115 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=926, Invalid=3904, Unknown=0, NotChecked=0, Total=4830 [2023-11-29 01:58:48,441 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 22085 mSDsluCounter, 8510 mSDsCounter, 0 mSdLazyCounter, 1326 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22085 SdHoareTripleChecker+Valid, 10053 SdHoareTripleChecker+Invalid, 1363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:58:48,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22085 Valid, 10053 Invalid, 1363 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [37 Valid, 1326 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 01:58:48,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32801 states. [2023-11-29 01:58:49,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32801 to 24411. [2023-11-29 01:58:49,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24411 states, 24409 states have (on average 1.331762874349625) internal successors, (32507), 24410 states have internal predecessors, (32507), 0 states have call successors, (0), 0 states 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 01:58:49,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24411 states to 24411 states and 32507 transitions. [2023-11-29 01:58:49,380 INFO L78 Accepts]: Start accepts. Automaton has 24411 states and 32507 transitions. Word has length 116 [2023-11-29 01:58:49,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:58:49,381 INFO L495 AbstractCegarLoop]: Abstraction has 24411 states and 32507 transitions. [2023-11-29 01:58:49,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 11.285714285714286) internal successors, (316), 27 states have internal predecessors, (316), 0 states have call successors, (0), 0 states 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 01:58:49,381 INFO L276 IsEmpty]: Start isEmpty. Operand 24411 states and 32507 transitions. [2023-11-29 01:58:49,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 01:58:49,382 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:58:49,383 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:58:49,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:58:49,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:58:49,583 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:58:49,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:58:49,584 INFO L85 PathProgramCache]: Analyzing trace with hash -514489291, now seen corresponding path program 1 times [2023-11-29 01:58:49,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:58:49,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482411138] [2023-11-29 01:58:49,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:49,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:58:49,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:49,908 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:58:49,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:58:49,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482411138] [2023-11-29 01:58:49,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482411138] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:58:49,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146126036] [2023-11-29 01:58:49,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:49,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:58:49,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:58:49,909 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:58:49,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:58:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:50,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 01:58:50,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:58:50,543 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:58:50,544 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:58:52,247 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:58:52,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146126036] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:58:52,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:58:52,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 27 [2023-11-29 01:58:52,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155380081] [2023-11-29 01:58:52,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:58:52,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 01:58:52,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:58:52,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 01:58:52,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2023-11-29 01:58:52,249 INFO L87 Difference]: Start difference. First operand 24411 states and 32507 transitions. Second operand has 27 states, 27 states have (on average 11.37037037037037) internal successors, (307), 27 states have internal predecessors, (307), 0 states have call successors, (0), 0 states 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 01:58:54,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:58:54,900 INFO L93 Difference]: Finished difference Result 66435 states and 86978 transitions. [2023-11-29 01:58:54,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:58:54,901 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 11.37037037037037) internal successors, (307), 27 states have internal predecessors, (307), 0 states have call successors, (0), 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 116 [2023-11-29 01:58:54,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:58:54,938 INFO L225 Difference]: With dead ends: 66435 [2023-11-29 01:58:54,938 INFO L226 Difference]: Without dead ends: 45109 [2023-11-29 01:58:54,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=313, Invalid=1169, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 01:58:54,954 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 13894 mSDsluCounter, 6709 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13894 SdHoareTripleChecker+Valid, 8249 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:58:54,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13894 Valid, 8249 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:58:54,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45109 states. [2023-11-29 01:58:56,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45109 to 44001. [2023-11-29 01:58:56,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44001 states, 43999 states have (on average 1.3133934862155958) internal successors, (57788), 44000 states have internal predecessors, (57788), 0 states have call successors, (0), 0 states 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 01:58:56,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44001 states to 44001 states and 57788 transitions. [2023-11-29 01:58:56,886 INFO L78 Accepts]: Start accepts. Automaton has 44001 states and 57788 transitions. Word has length 116 [2023-11-29 01:58:56,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:58:56,886 INFO L495 AbstractCegarLoop]: Abstraction has 44001 states and 57788 transitions. [2023-11-29 01:58:56,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 11.37037037037037) internal successors, (307), 27 states have internal predecessors, (307), 0 states have call successors, (0), 0 states 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 01:58:56,886 INFO L276 IsEmpty]: Start isEmpty. Operand 44001 states and 57788 transitions. [2023-11-29 01:58:56,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-29 01:58:56,888 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:58:56,888 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:58:56,893 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:58:57,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:58:57,089 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:58:57,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:58:57,089 INFO L85 PathProgramCache]: Analyzing trace with hash 746710716, now seen corresponding path program 1 times [2023-11-29 01:58:57,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:58:57,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685514157] [2023-11-29 01:58:57,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:57,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:58:57,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:57,461 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:58:57,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:58:57,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685514157] [2023-11-29 01:58:57,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685514157] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:58:57,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482649758] [2023-11-29 01:58:57,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:58:57,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:58:57,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:58:57,463 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:58:57,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:58:57,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:58:57,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 01:58:57,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:58:58,093 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:58:58,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:58:59,181 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:58:59,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482649758] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:58:59,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:58:59,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2023-11-29 01:58:59,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514490618] [2023-11-29 01:58:59,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:58:59,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 01:58:59,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:58:59,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 01:58:59,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2023-11-29 01:58:59,183 INFO L87 Difference]: Start difference. First operand 44001 states and 57788 transitions. Second operand has 26 states, 26 states have (on average 12.26923076923077) internal successors, (319), 25 states have internal predecessors, (319), 0 states have call successors, (0), 0 states 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 01:59:07,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:59:07,276 INFO L93 Difference]: Finished difference Result 213831 states and 277836 transitions. [2023-11-29 01:59:07,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-29 01:59:07,276 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 12.26923076923077) internal successors, (319), 25 states have internal predecessors, (319), 0 states have call successors, (0), 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 117 [2023-11-29 01:59:07,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:59:07,408 INFO L225 Difference]: With dead ends: 213831 [2023-11-29 01:59:07,408 INFO L226 Difference]: Without dead ends: 172721 [2023-11-29 01:59:07,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 659 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=656, Invalid=2536, Unknown=0, NotChecked=0, Total=3192 [2023-11-29 01:59:07,424 INFO L413 NwaCegarLoop]: 1570 mSDtfsCounter, 20767 mSDsluCounter, 7067 mSDsCounter, 0 mSdLazyCounter, 1474 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20767 SdHoareTripleChecker+Valid, 8637 SdHoareTripleChecker+Invalid, 1501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:59:07,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20767 Valid, 8637 Invalid, 1501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1474 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 01:59:07,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172721 states. [2023-11-29 01:59:14,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172721 to 165305. [2023-11-29 01:59:14,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165305 states, 165303 states have (on average 1.276443863692734) internal successors, (211000), 165304 states have internal predecessors, (211000), 0 states have call successors, (0), 0 states 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 01:59:15,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165305 states to 165305 states and 211000 transitions. [2023-11-29 01:59:15,084 INFO L78 Accepts]: Start accepts. Automaton has 165305 states and 211000 transitions. Word has length 117 [2023-11-29 01:59:15,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:59:15,084 INFO L495 AbstractCegarLoop]: Abstraction has 165305 states and 211000 transitions. [2023-11-29 01:59:15,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 12.26923076923077) internal successors, (319), 25 states have internal predecessors, (319), 0 states have call successors, (0), 0 states 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 01:59:15,084 INFO L276 IsEmpty]: Start isEmpty. Operand 165305 states and 211000 transitions. [2023-11-29 01:59:15,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-29 01:59:15,087 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:59:15,087 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:59:15,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 01:59:15,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:59:15,288 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:59:15,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:59:15,288 INFO L85 PathProgramCache]: Analyzing trace with hash -597685687, now seen corresponding path program 1 times [2023-11-29 01:59:15,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:59:15,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738939574] [2023-11-29 01:59:15,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:59:15,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:59:15,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:59:15,605 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:59:15,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:59:15,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738939574] [2023-11-29 01:59:15,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738939574] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:59:15,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61367579] [2023-11-29 01:59:15,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:59:15,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:59:15,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:59:15,608 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:59:15,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:59:15,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:59:15,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 01:59:15,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:59:16,663 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:59:16,663 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:59:18,049 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:59:18,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61367579] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:59:18,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:59:18,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-11-29 01:59:18,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556367718] [2023-11-29 01:59:18,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:59:18,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 01:59:18,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:59:18,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 01:59:18,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2023-11-29 01:59:18,052 INFO L87 Difference]: Start difference. First operand 165305 states and 211000 transitions. Second operand has 28 states, 28 states have (on average 11.75) internal successors, (329), 28 states have internal predecessors, (329), 0 states have call successors, (0), 0 states 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 01:59:32,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:59:32,338 INFO L93 Difference]: Finished difference Result 492562 states and 626355 transitions. [2023-11-29 01:59:32,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 01:59:32,339 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 11.75) internal successors, (329), 28 states have internal predecessors, (329), 0 states have call successors, (0), 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 118 [2023-11-29 01:59:32,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:59:32,835 INFO L225 Difference]: With dead ends: 492562 [2023-11-29 01:59:32,835 INFO L226 Difference]: Without dead ends: 349792 [2023-11-29 01:59:32,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=428, Invalid=1378, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 01:59:32,902 INFO L413 NwaCegarLoop]: 1550 mSDtfsCounter, 13806 mSDsluCounter, 5189 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13806 SdHoareTripleChecker+Valid, 6739 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:59:32,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13806 Valid, 6739 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:59:33,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349792 states. [2023-11-29 01:59:48,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349792 to 331364. [2023-11-29 01:59:48,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331364 states, 331362 states have (on average 1.2607329748130442) internal successors, (417759), 331363 states have internal predecessors, (417759), 0 states have call successors, (0), 0 states 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 01:59:49,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331364 states to 331364 states and 417759 transitions. [2023-11-29 01:59:49,201 INFO L78 Accepts]: Start accepts. Automaton has 331364 states and 417759 transitions. Word has length 118 [2023-11-29 01:59:49,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:59:49,201 INFO L495 AbstractCegarLoop]: Abstraction has 331364 states and 417759 transitions. [2023-11-29 01:59:49,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 11.75) internal successors, (329), 28 states have internal predecessors, (329), 0 states have call successors, (0), 0 states 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 01:59:49,201 INFO L276 IsEmpty]: Start isEmpty. Operand 331364 states and 417759 transitions. [2023-11-29 01:59:49,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-29 01:59:49,206 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:59:49,206 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:59:49,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 01:59:49,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:59:49,407 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:59:49,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:59:49,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1596084868, now seen corresponding path program 1 times [2023-11-29 01:59:49,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:59:49,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987030210] [2023-11-29 01:59:49,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:59:49,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:59:49,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:59:49,740 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:59:49,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:59:49,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987030210] [2023-11-29 01:59:49,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987030210] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:59:49,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981982818] [2023-11-29 01:59:49,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:59:49,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:59:49,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:59:49,741 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:59:49,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:59:49,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:59:49,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 01:59:49,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:59:50,929 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:59:50,929 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:59:52,422 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:59:52,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981982818] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:59:52,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:59:52,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-11-29 01:59:52,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208272460] [2023-11-29 01:59:52,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:59:52,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 01:59:52,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:59:52,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 01:59:52,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2023-11-29 01:59:52,425 INFO L87 Difference]: Start difference. First operand 331364 states and 417759 transitions. Second operand has 28 states, 28 states have (on average 12.142857142857142) internal successors, (340), 28 states have internal predecessors, (340), 0 states have call successors, (0), 0 states 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 02:00:07,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:00:07,191 INFO L93 Difference]: Finished difference Result 628521 states and 789930 transitions. [2023-11-29 02:00:07,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 02:00:07,192 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 12.142857142857142) internal successors, (340), 28 states have internal predecessors, (340), 0 states have call successors, (0), 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 119 [2023-11-29 02:00:07,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:00:07,567 INFO L225 Difference]: With dead ends: 628521 [2023-11-29 02:00:07,567 INFO L226 Difference]: Without dead ends: 351648 [2023-11-29 02:00:07,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=449, Invalid=1357, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 02:00:07,645 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 12716 mSDsluCounter, 6598 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12716 SdHoareTripleChecker+Valid, 8143 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:00:07,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12716 Valid, 8143 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 02:00:08,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351648 states. [2023-11-29 02:00:23,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351648 to 290692. [2023-11-29 02:00:23,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290692 states, 290690 states have (on average 1.2438817984794799) internal successors, (361584), 290691 states have internal predecessors, (361584), 0 states have call successors, (0), 0 states 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 02:00:24,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290692 states to 290692 states and 361584 transitions. [2023-11-29 02:00:24,549 INFO L78 Accepts]: Start accepts. Automaton has 290692 states and 361584 transitions. Word has length 119 [2023-11-29 02:00:24,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:00:24,549 INFO L495 AbstractCegarLoop]: Abstraction has 290692 states and 361584 transitions. [2023-11-29 02:00:24,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 12.142857142857142) internal successors, (340), 28 states have internal predecessors, (340), 0 states have call successors, (0), 0 states 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 02:00:24,549 INFO L276 IsEmpty]: Start isEmpty. Operand 290692 states and 361584 transitions. [2023-11-29 02:00:24,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-29 02:00:24,554 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:00:24,554 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:00:24,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 02:00:24,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-29 02:00:24,755 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:00:24,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:00:24,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1819607495, now seen corresponding path program 1 times [2023-11-29 02:00:24,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:00:24,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147605971] [2023-11-29 02:00:24,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:00:24,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:00:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:00:25,007 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:00:25,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:00:25,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147605971] [2023-11-29 02:00:25,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147605971] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:00:25,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391537643] [2023-11-29 02:00:25,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:00:25,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:00:25,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:00:25,008 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:00:25,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 02:00:25,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:00:25,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 02:00:25,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:00:25,595 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:00:25,595 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:00:26,632 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:00:26,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391537643] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:00:26,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:00:26,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-11-29 02:00:26,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265486746] [2023-11-29 02:00:26,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:00:26,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 02:00:26,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:00:26,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 02:00:26,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2023-11-29 02:00:26,634 INFO L87 Difference]: Start difference. First operand 290692 states and 361584 transitions. Second operand has 23 states, 23 states have (on average 12.130434782608695) internal successors, (279), 22 states have internal predecessors, (279), 0 states have call successors, (0), 0 states 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 02:00:54,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:00:54,550 INFO L93 Difference]: Finished difference Result 863196 states and 1073772 transitions. [2023-11-29 02:00:54,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 02:00:54,551 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 12.130434782608695) internal successors, (279), 22 states have internal predecessors, (279), 0 states have call successors, (0), 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 120 [2023-11-29 02:00:54,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:00:55,307 INFO L225 Difference]: With dead ends: 863196 [2023-11-29 02:00:55,307 INFO L226 Difference]: Without dead ends: 604109 [2023-11-29 02:00:55,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=269, Invalid=787, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 02:00:55,420 INFO L413 NwaCegarLoop]: 1560 mSDtfsCounter, 17061 mSDsluCounter, 3407 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17061 SdHoareTripleChecker+Valid, 4967 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:00:55,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17061 Valid, 4967 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 02:00:55,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604109 states. [2023-11-29 02:01:26,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604109 to 583369. [2023-11-29 02:01:26,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583369 states, 583367 states have (on average 1.2329785538091802) internal successors, (719279), 583368 states have internal predecessors, (719279), 0 states have call successors, (0), 0 states 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 02:01:28,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583369 states to 583369 states and 719279 transitions. [2023-11-29 02:01:28,123 INFO L78 Accepts]: Start accepts. Automaton has 583369 states and 719279 transitions. Word has length 120 [2023-11-29 02:01:28,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:01:28,124 INFO L495 AbstractCegarLoop]: Abstraction has 583369 states and 719279 transitions. [2023-11-29 02:01:28,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.130434782608695) internal successors, (279), 22 states have internal predecessors, (279), 0 states have call successors, (0), 0 states 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 02:01:28,124 INFO L276 IsEmpty]: Start isEmpty. Operand 583369 states and 719279 transitions. [2023-11-29 02:01:28,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-29 02:01:28,134 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:01:28,134 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:01:28,140 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 02:01:28,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-29 02:01:28,335 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:01:28,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:01:28,335 INFO L85 PathProgramCache]: Analyzing trace with hash -21156836, now seen corresponding path program 1 times [2023-11-29 02:01:28,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:01:28,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690744426] [2023-11-29 02:01:28,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:01:28,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:01:28,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:29,828 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:01:29,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:01:29,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690744426] [2023-11-29 02:01:29,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690744426] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:01:29,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212357120] [2023-11-29 02:01:29,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:01:29,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:01:29,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:01:29,830 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:01:29,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 02:01:29,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:29,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 02:01:29,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:01:31,573 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:01:31,573 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:01:32,979 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:01:32,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212357120] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:01:32,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:01:32,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 13] total 41 [2023-11-29 02:01:32,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710360083] [2023-11-29 02:01:32,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:01:32,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-29 02:01:32,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:01:32,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-29 02:01:32,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1508, Unknown=0, NotChecked=0, Total=1640 [2023-11-29 02:01:32,982 INFO L87 Difference]: Start difference. First operand 583369 states and 719279 transitions. Second operand has 41 states, 41 states have (on average 7.902439024390244) internal successors, (324), 41 states have internal predecessors, (324), 0 states have call successors, (0), 0 states 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 02:04:07,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:04:07,478 INFO L93 Difference]: Finished difference Result 1916803 states and 2363265 transitions. [2023-11-29 02:04:07,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 360 states. [2023-11-29 02:04:07,479 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 7.902439024390244) internal successors, (324), 41 states have internal predecessors, (324), 0 states have call successors, (0), 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 121 [2023-11-29 02:04:07,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:04:10,134 INFO L225 Difference]: With dead ends: 1916803 [2023-11-29 02:04:10,134 INFO L226 Difference]: Without dead ends: 1744777 [2023-11-29 02:04:10,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 396 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71802 ImplicationChecksByTransitivity, 51.8s TimeCoverageRelationStatistics Valid=20388, Invalid=137618, Unknown=0, NotChecked=0, Total=158006 [2023-11-29 02:04:10,445 INFO L413 NwaCegarLoop]: 1674 mSDtfsCounter, 29016 mSDsluCounter, 30980 mSDsCounter, 0 mSdLazyCounter, 6932 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29016 SdHoareTripleChecker+Valid, 32654 SdHoareTripleChecker+Invalid, 7222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 6932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:04:10,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29016 Valid, 32654 Invalid, 7222 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [290 Valid, 6932 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-11-29 02:04:12,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744777 states. [2023-11-29 02:05:07,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744777 to 728585. [2023-11-29 02:05:07,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728585 states, 728583 states have (on average 1.2348599953608579) internal successors, (899698), 728584 states have internal predecessors, (899698), 0 states have call successors, (0), 0 states 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 02:05:09,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728585 states to 728585 states and 899698 transitions. [2023-11-29 02:05:09,282 INFO L78 Accepts]: Start accepts. Automaton has 728585 states and 899698 transitions. Word has length 121 [2023-11-29 02:05:09,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:05:09,283 INFO L495 AbstractCegarLoop]: Abstraction has 728585 states and 899698 transitions. [2023-11-29 02:05:09,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 7.902439024390244) internal successors, (324), 41 states have internal predecessors, (324), 0 states have call successors, (0), 0 states 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 02:05:09,283 INFO L276 IsEmpty]: Start isEmpty. Operand 728585 states and 899698 transitions. [2023-11-29 02:05:09,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-29 02:05:09,291 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:05:09,291 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:05:09,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 02:05:09,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:05:09,491 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:05:09,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:05:09,492 INFO L85 PathProgramCache]: Analyzing trace with hash 830092644, now seen corresponding path program 1 times [2023-11-29 02:05:09,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:05:09,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619540352] [2023-11-29 02:05:09,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:05:09,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:05:09,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:10,895 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:05:10,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:05:10,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619540352] [2023-11-29 02:05:10,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619540352] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:05:10,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694319453] [2023-11-29 02:05:10,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:05:10,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:05:10,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:05:10,897 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:05:10,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 02:05:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:05:11,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 02:05:11,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:05:12,214 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:05:12,215 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:05:13,748 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:05:13,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694319453] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:05:13,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:05:13,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 15] total 35 [2023-11-29 02:05:13,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964110119] [2023-11-29 02:05:13,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:05:13,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-29 02:05:13,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:05:13,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-29 02:05:13,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1015, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 02:05:13,750 INFO L87 Difference]: Start difference. First operand 728585 states and 899698 transitions. Second operand has 35 states, 35 states have (on average 9.542857142857143) internal successors, (334), 35 states have internal predecessors, (334), 0 states have call successors, (0), 0 states 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 02:06:05,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:06:05,718 INFO L93 Difference]: Finished difference Result 995619 states and 1219457 transitions. [2023-11-29 02:06:05,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 02:06:05,718 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 9.542857142857143) internal successors, (334), 35 states have internal predecessors, (334), 0 states have call successors, (0), 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 121 [2023-11-29 02:06:05,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:06:06,858 INFO L225 Difference]: With dead ends: 995619 [2023-11-29 02:06:06,858 INFO L226 Difference]: Without dead ends: 814411 [2023-11-29 02:06:06,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=740, Invalid=2566, Unknown=0, NotChecked=0, Total=3306 [2023-11-29 02:06:06,999 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 8656 mSDsluCounter, 15617 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8656 SdHoareTripleChecker+Valid, 17158 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:06:06,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8656 Valid, 17158 Invalid, 1113 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [33 Valid, 1080 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 02:06:07,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814411 states. [2023-11-29 02:06:51,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814411 to 680785. [2023-11-29 02:06:51,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680785 states, 680783 states have (on average 1.232586595141183) internal successors, (839124), 680784 states have internal predecessors, (839124), 0 states have call successors, (0), 0 states 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 02:06:53,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680785 states to 680785 states and 839124 transitions. [2023-11-29 02:06:53,197 INFO L78 Accepts]: Start accepts. Automaton has 680785 states and 839124 transitions. Word has length 121 [2023-11-29 02:06:53,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:06:53,197 INFO L495 AbstractCegarLoop]: Abstraction has 680785 states and 839124 transitions. [2023-11-29 02:06:53,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 9.542857142857143) internal successors, (334), 35 states have internal predecessors, (334), 0 states have call successors, (0), 0 states 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 02:06:53,197 INFO L276 IsEmpty]: Start isEmpty. Operand 680785 states and 839124 transitions. [2023-11-29 02:06:53,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-29 02:06:53,203 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:06:53,204 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:06:53,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 02:06:53,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:06:53,404 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:06:53,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:06:53,405 INFO L85 PathProgramCache]: Analyzing trace with hash 874130460, now seen corresponding path program 1 times [2023-11-29 02:06:53,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:06:53,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015977217] [2023-11-29 02:06:53,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:06:53,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:06:53,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:06:54,180 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:06:54,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:06:54,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015977217] [2023-11-29 02:06:54,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015977217] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:06:54,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085765826] [2023-11-29 02:06:54,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:06:54,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:06:54,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:06:54,182 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:06:54,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d99ae08-afdb-46a8-be35-bed217fc86cb/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 02:06:54,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:06:54,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 02:06:54,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:06:55,844 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:06:55,844 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:06:57,567 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:06:57,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085765826] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:06:57,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:06:57,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 32 [2023-11-29 02:06:57,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859454839] [2023-11-29 02:06:57,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:06:57,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-29 02:06:57,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:06:57,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-29 02:06:57,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=872, Unknown=0, NotChecked=0, Total=992 [2023-11-29 02:06:57,570 INFO L87 Difference]: Start difference. First operand 680785 states and 839124 transitions. Second operand has 32 states, 32 states have (on average 9.75) internal successors, (312), 32 states have internal predecessors, (312), 0 states have call successors, (0), 0 states 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 02:08:23,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:08:23,340 INFO L93 Difference]: Finished difference Result 1618326 states and 1998579 transitions. [2023-11-29 02:08:23,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 02:08:23,340 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 9.75) internal successors, (312), 32 states have internal predecessors, (312), 0 states have call successors, (0), 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 121 [2023-11-29 02:08:23,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:08:25,283 INFO L225 Difference]: With dead ends: 1618326 [2023-11-29 02:08:25,283 INFO L226 Difference]: Without dead ends: 1433290 [2023-11-29 02:08:25,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 951 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=812, Invalid=3220, Unknown=0, NotChecked=0, Total=4032 [2023-11-29 02:08:25,529 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 18407 mSDsluCounter, 12690 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18407 SdHoareTripleChecker+Valid, 14241 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:08:25,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18407 Valid, 14241 Invalid, 1147 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [55 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 02:08:26,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433290 states.